Questions Asked on
November 1, 2010

chem 30
how do you find solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS
asked by brit 
chemistry
Can someone just get me started on this im not sure of how to go about solving this. The heat of vaporization of carbon disulfide, CS2, at 25° C is 27.2 kJ/mol. 1.00 mol of carbon disulfide vapor condenses to liquid at 25° C. The entropy of this vapor at
asked by steve 
PHYSICS
NEED HELP ON THE ANSWER OF THIS PROBLEM THE EFFICIENCY OF THE PULLEY DECREASES WITH A COEFFICIENT OF FRICTION OF 2.0 THE EFFICIENCY OF THE PULLEY IS 60% WHAT WOULD YOU EXPECT THE EFFICIENCY TO BE IF THE COEFFICIENT OF FRICTION INCREASED TO 0.3
asked by AMBER 
fraction
complete the following by using the cancellation technique 3/4 x 2/4 x 6/9
asked by Pat 
Maths
What is the answer to the following using sicentific calculator 641/6
asked by Thomas 
physics
a 1250 kg car is pulling a 325 kb trailer. The car and trailer have an acceleration of 2,15m/sec2 together. Determine the net force on the catrailer combination. What is the net force on the railer?
asked by Anonymous 
Chemistry
1. What is the pH of the solution created by combining 0.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? 2. What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first
asked by Kyo 
enlish
hi i would like to now how to writte more pharagraphs that is what i need help thanks,
asked by sahra 
eCONOMICS
Explain how an economist could use the slope of the yield curve to analyze the probability that a recession will occur and why the spread may matter.
asked by aMANDA 
AP Chem
Pretend you are a nuclear scientist and try to answer this bonus question. Uranium 235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U 238 (238U) and very little uranium 235. Therefore, it is necessary that
asked by derek 
business
You have recently been hired as a new manager hired into a failing division in a company. The product line is outdated and losing market share, interdepartmental communication is adversarial, and competition for corporate funding is fierce. How are you, a
asked by bryan 
physics
A long, straight metal rod has a radius of 4.50 cm and a charge per unit length of 30.0 nC/m. Find the electric field at the following distances from the axis of the rod, where distances are measured perpendicular to the rod. a)3.00 cm b)13.5 cm c)120 cm
asked by anonymous 
physics
Consider a thin spherical shell of radius 16.0 cm with a total charge of +28.0 µC distributed uniformly on its surface. (Take radially outward as the positive direction.) Find the electric field 10.0 cm from the center of the charge distribution.
asked by anonymous 
physics
A uniformly charged insulating rod of length 13.0 cm is bent into the shape of a semicircle as shown in the figure below. The rod has a total charge of 7.50 µC. Find the magnitude and direction of the electric field at O, the center of the semicircle.
asked by anonymous 
chemistry
Calculate the solubility (in grams per 100 mL of solution) of magnesium hydroxide in a solution buffered at pH = 12. I can get the answer in grams per mole, but i am having difficulty changing it to g/100ml.
asked by moe 
Physics
As you approach the I90 exit in your uncle's little red sports car convertible, you happen to notice a cat crossing the road. Not that you have any particular love of cats (especially this one, whose snooty disposition seems to beckon for a game of
asked by Anne 
Accounting
Can someone please help me with this question and break it down into dummy terms I am struggling in this course. Even if you have solid financials, can you obtain more market share?
asked by Becki 
Psychology
From Negative Reinforcement University...You're stuck in a dungeon. In each room water is filling to the top but you can choose a button a Triangle or a Circle and if you choose correct a door will open and you can continue to another room (there is a
asked by Anonymous 
history from 1945
explain US relations in East Asia during the 1950s in the larger contextof Early War tensions.(be sure to cover all areas of East Asia)
asked by cristee 
math
Find the simple interest of#108,000 for 2 years at 1 and the half percent per annum.pls solve
asked by Tj 
math
Find the simple interest of#108,000 for 2 years at 1 and the half percent per annum.pls solve
asked by Tj 
psychology
Define sensation and perception. What is the difference between them? Provide an example.
asked by anoymous 
MAT117
SOLVE ^Y+61=4 A) The solution to Y=_ OR B)Solution is not a real number Can't figure this one out... This is what I came up w/ Y=^5
asked by Brandon 
Chemistry
If 10.0g of Pb at 25.0oC absorbs 1.00kJ of heat, what is it's final temperature?
asked by Natalie 
MAT117
SOLVE ^Y+61=4 A) The solution to Y=_ OR B)Solution is not a real number Can't figure this one out... This is what I came up w/ Y=^5
asked by Brandon 
Chemistry
given 65g of Zn and 65g of HCl, what is the limiting reactant and reactant in excess in Zn + 2HCl ZnCl2 + H2
asked by Irene 
physics
What displacement must be added to a 50cm displacement in the +xdirection to give a resultant displacement of 85cm at 25 degrees
asked by Harry 
physics
A playground carousel (“merrygoround”) is free to rotate frictionlessly in the horizontal plane (and air resistance is negligible). Without riders, the carousel has a moment of inertia of 152 kg·m2. But there is a single rider, initially standing
asked by becca 
physics
A cannon fires a shell at an angle of 55.0° above the horizontal. The shell has a mass of 17.5 kg, and its initial speed as it leaves the cannon is 289 m/s. The cannon is not anchored to the ground. It is mounted on a base—a large block of wood—which
asked by becca 
fundamentals of accountig
explain clearly the examples of the main items used in the adjusting process
asked by etoori 
MB0040
Give a brief note of measures of central tendency together with their merit & demerit which is the best measure of central tendency and why
asked by shravan kumar dewangan 
IT/236
List three things that a Web designer must consider and understand about the purpose or target audience prior to site development. Why do you feel each of these is important to a successful plan?
asked by Pamela 
math
the area of a rectangle is 60cm.the length is 11cm more than the width. find the width.
asked by sophie 
math
I need help with parametric equations, locus problems, tell me how to solve all questions if you can. Need help with one below: Tangents are drawn to a parabola x^2=4y from an external point A(x1,y1) touching the parabola at P and Q (a) Prove that the mid
asked by chris 
Vectors
45cm at 53 degrees
asked by Anonymous 
algebra
fg/1 = g/1 How can I make g the subject?
asked by K 
math
Your younger brother is pulling his sled up a hill. Each minute he moves forward 20 feet but also slides back 3 feet. Describe how you can determine the time he needs to pull his sled 130 feet forward. ANSWER NOW!!!
asked by Am 
sports math
There are many ways to add any numbers 3,5,7,9,11, and 12 to get a sum of 20. Numbers may be repeated.One way to get a sum of 20 is 9+5+3+3. Find four other ways.
asked by Am 
geometry
A figue made from seven identical trepezoids is shown. Find the perimeter of the figue.
asked by Am 
math
Help with this complex fraction please... (a+2/a^2+a2)  (3a+1/a^2+2a3) LCM is (a1) (a+2) (a+3) right? then i get stuck
asked by 
English
Can you please check if the following statements on the English language are possible? Thank you very much. 1) As for its origin, English is a Germanic language of the IndoEuropean family. 2)The history of the English language can be traced back (dates
asked by Franco 
calculus
Find the points at which y = f(x) = 5x−ln(5x) has a global maximum, a global minimum, and a local, nonglobal maximum on the interval .1 ≤ x ≤ 2. Round your answers to two decimal places. Global Minimum: (x,y) = (,) Global Maximum: (x,y) = (,) Local,
asked by Erika 
calculus
Find the points at which y = f(x) = x8−13x has a global maximum and minimum on the interval 0 ≤ x ≤ 3.7. Round your answers to two decimal places. Global Maximum: (x,y) = (,) Global Minimum: (x,y) = (,)
asked by Erika 
calculus
With x people on board, a South African airline makes a profit of (1104 − 3 x) rands per person for a specific flight. A. How many people would the airline prefer to have on board? Answer: x= B. What is the maximum number of passengers that can board
asked by Erika 
Physcis  scientifc models and theories.
a) Do you believe that some current accepted scientific models or theories might be held in high regard because of the structure of the scientists who proposed them? b) Suggest on possible model or theory that is currently accepted by a majority of people
asked by Farah 
Physcis wavelets and wavefronts
Describe how the wavelets that form in the wavefront apparently vanish behind it?
asked by Farah 
Physics  Sound Energy propagation
Sound, a form of energy can be modeled by using two distinctly different approaches. a) Describe the propagation of sound energy through air by discussing the motion of individual particles. Include possible mathematical equations that might apply. Ans:
asked by Farah 
hum 105
a scholarly article that discusses some aspect of the Female Divine in contemporary culture. (This might range anywhere from discussions on goddesses in advertising found in an article on marketing to discussions of feminine principles in contemporary
asked by hum 105 
geometry
The radius of a circle is 34 meters long,and a chord of the circle is 60 meters long.how far is the chord from the center of the circle?
asked by Anonymous 
algebra
write the partial fraction decomposition of the rational expression ax over x squared x2 or ax ____________ xsquaredx2
asked by frank 
algebra
find all real zeros and their multiplicity of the polynomial function f(x)=5(x4)squared(x+2
asked by frank 
algebra
state the domain of the function. identify all intercepts and find vertical and horizontal asymtodes. f(x)=x2 over x+1 or x2 f(x)= ___ x+1
asked by frank 
University of phoenix mat116
use multiplying by 1 to find expression equivalent to 16/17 with denominator of 102d
asked by Dana 
English
1. In Korean culture, the halfmoon is a symbol of growth. 2. In Korean culture, the half moon is a symbol of growth. (Are both OK? What about the use of a hyphen between 'half' and 'moon'? And what is the use of 'the' before 'half moon'?))
asked by rfvv 
English
1. Wine is made from grapes. 2. Grapes are made into wine. (Both are the same, right/) 3. The bridge is made of stone. 4. The bridge is made out of stone. 5. The bridge is made from stone. 6. The bridge is made with stone. (Which ones are grammatical from
asked by rfvv 
English
1. Rice cake soup is made from sliced long rice cakes. 2. Rice cake soup is made of sliced long rice cakes. 3. Rice cake soup is made with sliced long rice cakes. (Which one is grammatical? Please notice the use of prepositions.)
asked by rfvv 
spanish
¿Qué _____ a Uds.? a. le falta b. les falta c. le faltan d. nos falta A?
asked by Lily 
English
People grow one year older every New Year's Day by eating rice cakes. (What is the meaning of 'grow' in this sentence? What other words can we use instead of 'grow'?)
asked by rfvv 
English
1. We can massage old people's backs. 2. We can help them use a computer. 3. We can visit their houses and clean rooms. 4. We can take them to a bathroom in wheelchairs. 5. We can help them wash their faces. 6. We can help them take a bath. 7. We can
asked by rfvv 
Advanced Functions
How do you write 1/9 x^1 with a positive exponent? also, 5 x^2 ??
asked by Ali 
Advanced Functions 2
How do you simplify (x^a+b)^ab / (x^a2b) ^ a+2b
asked by Ali 
logs
How do you solve: log (1/3) 1 ?
asked by Ali 
logs 2
How do you solve log(5) 20 + log (5) 10  3log(5) 2?
asked by Ali 
Richter scale question
An earthquake registers 6.1 on the richter scale. What is the rating on an earthquake twice as powerful? I know: M=I/Io Then what do you do?
asked by Ali 
logs 3
How do you create a table to graph log (3/2) x ???
asked by Ali 
inverse equation
How is any equation of the form y= x + b its own inverse?
asked by Ali 
PhysicsPlease check
A 3.00 kg toy falls froma height of 1.00m. What will the kinetic energy of the toy be just before it hits the ground. No air resistance and g=9.81m/s Amswers: 0.98J 9.8 J 29.4 J 294 J I used the formula 1/2 m times v^2 3. times 9.8^2/2 =144. Please
asked by Matt 
english
"The editors . . . break those sequences up into quick jagged shots that key us up and keep us hyperalert . . . we look hard at the screen to take it in." aesthetics? or is it authenticity?
asked by danny 
neg exponents
How do you write: 1/9 x^1 with a positive exponent? also, 5 x^2 ??
asked by Ali 
8th grade
A population histogram that looks like a trangle means
asked by Anonymous 
Simplify exponents
How do you simplify this equation: (x^a+b)^ab / (x^a2b) ^ a+2b
asked by Ali 
Global science
A population histogram that looks like a triangle ____. It also means A)the population is rapidly expanding. b) the population is stabilizing.C)a clumped population.d)The population is declining.
asked by Anonymous 
English
Could you please check if the following sentences are all grammatically correct? Thank you. 1) As Coleridge suffered from chronic rheumatism, the doctors prescribed him opium to ease bodily pains and he became addicted to this drug. 2)He distinguished
asked by Franco 
Global science
The ajor reason for the dfamatic increase in human population during the last 100 years is ? a)increasing birthrates,B)decreasing birth rates,c)improved daycare for children,d) decreasing death rates
asked by Anonymous 
english
Which of the following topics relate directly to a work's authenticity? 1)believability of characters 2)the appeal of a certain guitar riff 3)sincerity expressed in a love song 4)the likely appeal to all teenagers 5)the way the setting matches the mood of
asked by danny 
chemistry
What is the purpose statement for the lab comparation titrations?
asked by john 
Chemistry
For Carbon dioxide, for a volume of 500 mL and temperature of 100 degrees celcius, calculate the pressures using the ideal gas law and the van der Waals equation. Explain any dicrepancies in the calculated values. Ideal Gas Equation: Van Der Waals Equation
asked by Leah 
english
compare and contrasrt natty bumppo in the prarie and john in the Hospital SKetches.
asked by mike 
Chemistry
Explain why the calculated value for the (1) enthalpy of combustion for propane using bond energies (bond breaking and bond formation)might not be in close agreement to the values calculated using (2) Hess Law and the values calculated using the (3)
asked by Leah 
Algebra
factor completely 3y^227
asked by Stacy Wellnitz 
8th Grade Math
Can somebody help me solve this problem? Simplify and evaluate the expression for y = 0, z = 1.5. 0.8z +0.005z(0.001y  3.1 + (1.5z + 3))
asked by Elizabeth 
Comm
Write five sentences about the role of education in successful financial planning in the spaces on the following page. Correctly use a different verb tense in each sentence.
asked by Brandon 
geometry
how many lines of symitery does a delts shape have
asked by Anonymous 
economics
how would a citizen whoose income is in the top one percent talk about scarcity and trade offs?
asked by mary 
Global science
Exponential growth is stopped when______equals. there are no choices and I don't hve an answer. I am learning about Growth and population.My science book is called Global science Earth/ environmental systems science by Kendall Hunt publishing company. It
asked by Anonymous 
3rd grade
do you have to use unit signs when creating a number model? like $, cans, marbles ect...
asked by bernice 
physics
Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = w2) and
asked by Mark 
PHYSICS HELP!
Consider a hoolahoop of radius R and it is spinning about its symmetry axis at a constant angular velocity. Now, I double its mass and halve its angular velocity. What is the new angular momentum in terms of the initial angular momentum?
asked by lacey 
equation of exp function
What equation has the following features: It has the xaxis as an asymptote and it passes through (0, 1), (1,3) and (2,9)?
asked by Ali 
physics
The average human has a density of 940 kg/m3 after inhaling and 1028 kg/m3 after exhaling. (a) Without making any swimming movements, what percentage of the human body would be above the surface in the Dead Sea (a lake with a water density of about 1230
asked by Ericahelp! 
maths
how to solve the square root of 15.59
asked by aiman 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on
asked by Bala 
college
A spaceship lands on the planet whose radius is 5 times that of planet earth and whose mass is 25 times that of planet earth. Find the apparent weight of the astronaut on the second planet if the astronaut weighs 150lbs on planet earth
asked by Antonio 
Stats
If a confidence interval for the mean is 24.8 < ì < 29.6. What is the margin of error?
asked by Erica 
Physics
A 66 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 14 m, and falls a total of 34m. 1. Calculate the spring stiffness constant of the bungee cord, assuming Hooke's law applies. 2. Calculate the maximum
asked by Nick 
Physics
Forces of 10.6 N north, 20.8 N east, and 14.3 N south are simultaneously applied to a 3.76 kg mass as it rests on an air table. What is the magnitude of its acceleration?
asked by Jane 
chemistry
Balance the following redox reactions assuming a basic solution. Show all the steps. a. MnO2(s) > MnO4^2 + H2 (g) b. H2O2 (aq) + Cl2O7 (g) > ClO2 (aq) + O2 (g) How can you balance these if for example in part a., there is no H on the left side... can I
asked by Dana 
Physics
A spring has a spring stiffness constant, k, of 420 N/m . 1. How much must this spring be stretched to store 30 J of potential energy?
asked by Nick 
Physics
Two railroad cars, each of mass 7350 kg and traveling 80 km/h in opposite directions, collide headon and come to rest. 1. How much thermal energy is produced in this collision?
asked by Nick 
algebra
find all real zeros and their multiplicity of the polynomial function f(x)=5(X4)squared(x+2)
asked by frank 
Physics
Use principles of force and kinematics to answer these: a. A 40 kg skater pushes on the 60 kg skater (initially at rest). As they collide, the 40 kg skater pushes on the 60 kg skater, applying a force 100 Newtons for 1.2 seconds. Find the velocity at which
asked by jen 
Physics
A novice skier, starting from rest, slides down a frictionless 35.0 degree incline whose vertical height is 140 m. 1. How fast is she going when she reaches the bottom?
asked by Nick 
English
I need to paraphrase the initial part of the Rime of the ancient Mariner by Coleridge. I wonder if you could help me rephrase the description of the storm.Thank you. 1) The bride, as red as a rose, has entered into the all and a group of singers and
asked by Franco 
Physics
A softball having a mass of 0.25 kg is pitched at 96 km/h. By the time it reaches the plate, it may have slowed by 9.0%. 1. Neglecting gravity, estimate the magnitude of the average force of air resistance during a pitch, if the distance between the plate
asked by Nick 
Physics
A block of mass M resting on a 21.5° slope is shown. The block has coefficients of friction μs=0.605 and μk=0.344 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.57 kg. What is
asked by Bala 
Physics
A 87 g arrow is fired from a bow whose string exerts an average force of 105 N on the arrow over a distance of 76 cm. 1. What is the speed of the arrow as it leaves the bow?
asked by Nick 
Physics
A 50 kg crate is initially at rest on a plane inclined at an angle of 30 degrees to the horizontal. A man then pulls the crate up the incline via a rope that is parallel to the inclined plane. The tension that the man imparts to the rope is 100 N, and the
asked by Shelby 
Physics pls help
A 5kg object starts at rest and has a force applied to it of 10 Newtons for 2 seconds, followed by 20 Newtons for 2 seconds, followed by 30 newtons for 2 seconds, all in the same direction. a. Determine its final velocity b. Sketch a graph of force vs time
asked by sally 
Chemistry
43. List and describe three factors that influence solubility: (Sourcewikipedia) The solubility of a given solute in a given solvent typically depends on temperature. For many solids dissolved in liquid water, the solubility increases with temperature up
asked by mysterychicken 
log graph
How do you graph y= log (base 5)(x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
asked by Ali 
Chemistry
A sample of lowfat margarine is heated and separates into two layers. Identify the top and bottom layers and explain why the top layer rises to the top
asked by Anonymous 
Tissue box project help?
So, I have to design a tissue box. ( I already bought one) and, It has to be anything related to english, as in ( parts of speech, words, ) anything. anything related to language arts. and I need some ideas? Could somebody help me? Thank you. Allyson
asked by Allyson 
Math
find the sum of arthmetic progression 12,15,18,,,,,, 84, a=12 d=3 n=?
asked by sonia 
ethics
What would utilitarianism say about plea bargaining and the death penalty?
asked by Anonymous 
cell
If the cell do not have membrane; Does it still consider be a cell?
asked by Elawabeh 
chemistry
what weight of solid CaCl2 would you need to prepare 500 ML of 0.150 M CoCL2
asked by Anonymous 
Physics
A uniform thin ring of charge, with radius 5.20 cm and total charge 6.60 ìC, is located in the yzplane and centered on the origin. (In other words, the xaxis passes through the center of the ring, and is perpendicular to the ring.) A particle of mass
asked by Rudi 
statistics and probability
In 1992, the FAA conducted 86,991 preemployment drug tests on job applicants who were to be engaged in safety and securityrelated jobs, and found that 1,043 were positive. (a) Construct a 95 percent confidence interval for the population proportion of
asked by Laura 
Stats
A group of 56 randomly selected students have a mean score of 30.8 and a standard deviation of 4.5 on a placement test. Find a 95% confidence interval for the mean score, ì, of all students taking the test. (Note: ó is unknown.)
asked by Erica 
Physics Please Help!!
Suppose there is a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, there is an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = w2)
asked by emily 
English
I forgot to include the following sentences. I included a question mark next to the phrases I find it difficult to rephrase. 1) The mariner tells him how "the ship was cheered and the harbour cleared (?)." "They dropped below the church." How can I
asked by Franco 
journalsim
Have women today been more involved in politics than before? Why or why not?
asked by ..... 
physics
Engineers are developing new types of guns that might someday be used to launch satellites as if they were bullets. One such gun can give a small object a velocity of 2.5 km/s while moving it through a distance of only 1.9 cm.
asked by Anonymous 
Simplify exponents
(x^ a+b) ^ (ab) / (x^a2b) ^ (a+2b)
asked by Ali 
Economics
Suggest three reasons why there is a market for expensive imported alcoholic drinks in countries such as Thailand, South Korea or India when there are locally produced substitues sold at a fraction of the price.
asked by Remy 
Research and Evaluation
Am I reading this right? Internal validity refers to the extent to which a test measures what we actually do; Validity examines whether the conclusion that we draw about a demonstrated experimental relationship truly implies cause; and External validity
asked by Momof8 
Trigonomentry HELP NOW
Rationalize in simplest form: (2ãx + ã8x)/(xã8 + 5)
asked by Fronda 
Math and science
If a circuit has a 3.9 k ohms resistor and a 5 uF capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 1.5 mA.
asked by Mario 
algebra
solve the system of equations x+y=1 xy=5
asked by frank 
spanish
yo bebo mucha agua..is this right?
asked by jenna 
Chemistry
If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?
asked by Lisa 
Math and science
If a circuit has a 3.9 k omega resistor and a 5 uF capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 1.5 mA.
asked by Mario 
Chemistry
Calculate the energy difference (E) for the transition from n = 1 to n = 6 energy levels of hydrogen per 1 mol of H atoms. (Report your answer to at least 3 significant figures.)
asked by Megan 
Chemistry
The hydroxyl radical (OH) is an important oxidizing agent in the atmosphere. At 298 K the rate constant for the reaction of OH with benzene is 1.24 1012 cm3 molecule 1 s 1. Calculate the value of the rate constant in L mol 1 s 1. This is what I tried:
asked by Anonymous 
math
what is the vertex and axis of symmetry y=2x^2  7x + 1
asked by luke 
math
what is the discriminant of the quadratic y= 3x^2  4x  3 also explain what the graph will look like?? thanks
asked by tommas 
physics
Glycerin in water diffuses along a horizontal column that has a crosssectional area of 2.3cm^2. The concentration gradient is 0.028 kg/m^4, and the diffusion rate is found to be 5.8 x 10 ^15 kg/s find the diffusion coefficient in units of m^2/s.
asked by Ashleigh 
physics
The motion of a certain simple harmonic oscillator is described by: x(t) = (12 cm) sin [(1 s ^(1)) t] What is the earliest time t > 0 or t = 0 at which the oscillator's velocity is zero?
asked by Ashleigh 
statistics
Scores on an english test are normally distributed with a mean of 33.6 and a standard deviation of 8.3. Find the 41st percentile?
asked by English Test Scores 
Statistics
A group of 56 randomly selected students have a mean score of 30.8 and a standard deviation of ó = 4.5 on a placement test. Find a 95% confidence interval for the mean score, ì, of all students taking the test.
asked by Erica 
Chemistry
How fast must a 144 g baseball travel in order to have a de Broglie wavelength that is equal to that of an xray photon with = 100. pm?
asked by Megan 
statistics
7. A researcher hypothesized that the greater number of hours employees spent in a human relations course the higher their performance evaluations would be. A test statistic of .60; p
asked by TOMMY 
STATISTIC
Mrs. Carlson has discovered that the students in her class who watch a larger amount of television do more poorly on her exams compared to those who watch a smaller amount of television. Which of the following conclusions can Mrs. Carlson draw? Explain
asked by TOM 
statistics
Scores on the Stanford Binet Intelligence Scale (SBIS) are distributed as normal with a mean of 100 and a standard deviation of 16. Use the probabilities under the Normal Curve to answer the following questions. a. A child scored 84 on the SBIS. What is
asked by TOM 
lomas
Right answer? 15(x^2+3x) + 7(x^2+3x)  5(x^2+3x) 15x^2+45x+7x^2+21x + 5(x^23x) 15x^2+45x+7x^2+21x5x^215x 17x^2+51x
asked by math 
physics
time down ramp #1=2 sec.,time across table top is 5sec.,time up ramp #2 is 4 sec., distance across table top between ramp is 20 meter long
asked by Anonymous 
geometry
How do you find the slopeintercept form for 3y+2x+12=0?
asked by courtney 
Global science
why are so many niches available on recentlydevasted islands
asked by Anonymous 
Math
what exactly is an unequal group?
asked by Leondra 
geography
How are Paraguay and Zambia similar? My answer is Both are surrounded by other countries and both of them are completely under the Equator. Is this correct?
asked by Reed 
Physics
A block of mass M resting on a 21.5° slope is shown. The block has coefficients of friction μs=0.605 and μk=0.344 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.57 kg. What is
asked by Bala 
5th grade math
i have to write an algebraic expression for the following: jasmine has three times as many chores as her younger brother does.
asked by maria 
Physics
An office window has dimensions 3.6 m by 2.5 m. As a result of the passage of a storm, the outside air pressure drops to 0.925 atm, but inside the pressure is held at 1.0 atm. What net force pushes out on the window?
asked by Megan 
chemistry
describe what you would observe if you mixed the following pairs of solutions, include the color of all solutions and or precipitates a)BaCl2 and Pb(NO3)2 b)Pb(NO3)2 and NaCO3
asked by sara 
Physics
An electron travels at a speed of 1.0×104 through a uniform magnetic field whose magnitude is 1.2×10−3 . What is the magnitude of the magnetic force on the electron if its velocity and the magnetic field are perpendicular?
asked by Lisa 
Physics
Forces of 10.6 N north, 20.8 N east, and 14.3 N south are simultaneously applied to a 3.76 kg mass as it rests on an air table. What is the magnitude of its acceleration?
asked by Jane 
chemistry
A sample of an unknown gas effuses in 11.5 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.77 min. What is the molar mass of the unknown gas?
asked by jacob 
Math
1.The are of a triangle is A=1/2bh. where A is the area, b is the base,h is height. Which of the following correctly expresses b in the terms of the other quantities? A. B=2AH B. B=H/2A C. B=2H/A D. B= 2A/H Why would that answer be correct. SOLVE.
asked by Sherkyra845 
Math
2. A rental company charges a flat fee of $50 to rent a jet ski.In addition, renters must pay $17.50 per hour of ski use. Write the equation correctly represents the total cost, c, to rent a jet ski for h hours?
asked by Sherkyra845 
Maths
if f(x) = 2x  x ln x show that f(e^3) = e^3 I know you have to substitute e^3 into the function, so Ive sone ths so far: 2e^3  e^3 ln e^3 What is the next step?
asked by Hannah 
trig
evaluate the expression: cot 270 + 8 cos 180 + 5 sec2360
asked by marlene 
7th MATH
Write an expression to represent the following: "h subtracted from the product of 3 and g". A 3GH B H3G C (H3)G D 3(HG) From my opinion: Giving it a try would B be the correct answer?
asked by KOSHAKOD1234 
MATH
What is 7/8 0f 24 blocks?
asked by Jourdyn 
physics
A car that decreases its speed from 100 km/h to 20 km/h undergoes ______ acceleration.
asked by Janis 
problem solving
If a circuit has a 3.9 k ohms resistor and a 5 uF capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 1.5 mA.
asked by milton 
math
If a circle is divided into 12 equal parts what is the degree measure for each of the 12 angles formed
asked by Taylor 
Math
If rst=1, what is the value of s? A. rt+1 B. 1+r/t C. 1r+t D. 1+t/r /=fraction symbol.
asked by Kesha Reid 
log equation graph
How do you graph y= log (base 5)(x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
asked by Ali 
Chemistry
In lab we determined the heat capacity of a calorimeter. The question is how would the heat capacity of the calorimeter be affected if the NaOH solution had been at 25 degrees Celsius and the HCl solution had been at 22 degrees Celsius when the two
asked by Katy 
Maths
if f(x) = 2x  x ln x show that f(e^3) = e^3 I know you have to substitute e^3 into the function, so Ive sone ths so far: 2e^3  e^3 ln e^3 What is the next step?
asked by Hannah 
Math
Explain,in words,how would you solve: 3(n8)=12+2n {this is a two step equation}
asked by Louis Streeter 
physics
A 7 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 1.4 m/s2, find the force exerted by the rope on the bucket of water.
asked by Devon 
accounting
A company that uses perpetual inventory system made the following cash purchases and sales: January 1 Purchased 100 units at $10 per unit. February 5: Purchased 60 units at $12 per unit. March 16: Sold 40 units for $16 per unit. Prepare general journal
asked by pj 
ACCOUNTING
A company purchased 1000 units of inventory on September 25 and the cost per unit was $8.50. Terms of the purchase were 2/10, n/30. The invoice was paid in full on October 4. (Assume a perpetual inventory system). Prepare the journal entries to fully
asked by pj 
ethics
How did slavery influence the evolution of both Back and White America today?
asked by Jennifer 
psychology
An example of ______________ would be if you argue that most behaviors are a product of your environment and your friend argues that behaviors are a result of heredity
asked by Andres 
ALgebra
the sum of two numbers is 87 & their difference is 35. find the numbers.
asked by mike 
chemistry
33) A firstorder reaction has a rate constant of 0.33 min1. It takes __________ min for the reactant concentration to decrease from 0.13 M to 0.088 M. A) 1.4 B) 0.13 C) 1.2 D) 0.85 E) 0.51 how can i set this up?
asked by JES 
Physics
1. Gunter, the weightlifter, can lift a 230.0 kg barbell overhead on Earth. The acceleration due to gravity on the sun is 274 m/s2. 2. a. Would the barbells be heavier on the sun or on the Earth. heavier on the sun b. How much (in Newtons) would the
asked by Micah 
ALgebra
the difference of two numbers is 37. the larger is one more than four times the smaller. what are the numbers?
asked by mike 
Physics
A 2.03 kg mass is observed to accelerate at 8.82 m/s2 in a direction 28.8° north of east. There is a force directed north acting on the object and a force directed east acting on the object. What is the magnitude of the force acting east on the object?
asked by Mike 
physics
A freight train has a mass of 5 x 107 kg. If the locomotive can exert a constant pull of 12 x 105 N, how long would it take to increase the speed of the train from rest to 85 km/h
asked by Devon 
physicss
What average force is required to stop an 1100 kg car in 9.1 s if it is traveling at 83 km/h?
asked by Devon 
math
for every lefthanded person there are about 4 righthanded persons. If there are 30 studentsa in a class write and solve a proportion to predict the number of students who are righthanded.
asked by Kory 
MATH
6X100
asked by NAME 
SCI230 UOP
Can someone give me an idea on how my outline should look? I have a checkpoint due tomorrow titled: Article Critique Outline. I chose the topic: Thousands of Undiscovered Plant Species Face Extinction. Guidelines:  Introduction to paper and chosen topic 
asked by Interprize 
Physics
Forces of 10.6 N north, 20.8 N east, and 14.3 N south are simultaneously applied to a 3.76 kg mass as it rests on an air table. What is the magnitude of its acceleration?
asked by Jane 
calculus
find the sum ∑(n/(n+1)!) from n=1 to infinity
asked by Alex 
chemistry
Determine the number of NH4+ ions in a 145 g sample of (NH4)2SO4.
asked by angela 
Organic Chemistry
acetic acid and isopentyl alcohol form isopentyl acetate and water The excess reagent is acetic acid, and the limiting reagent is isopentyl alcohol. How great is the molar excess (how many times greater)?
asked by Jim 
PreCalculus
Solve the equation by finding the square root. 4u2 + 4u + 1 = 75
asked by Pablo 
grammar
What part of speech is the word anymore?
asked by Anonymous 
algebra
two investments were made totaling $15,000. for a certain year these investments yielded $1432 in simple interest. part of the $15,000 was invested at 9% and part at 10%. find the amount invested at each rate. a total of $1150 was invested, part of it at
asked by matt 
chemistry
Determine (a) the total number of Cl atoms in 125mL of liquid CCl4 (d= 1.589g/mL) and (b) the number of grams of carbon in 215 of sucrose, C12H22O11.
asked by angela 
math
how do you find the degree for a octagon
asked by cindy 
math 5TH GRADE
The factory wants you to build a box that will hold twice as many cubes.What are the dimensions of a box that contains two times as many cubes as a box that is 2 by 3 by 4 ? W rite the dimensions and explain how you found your answer.
asked by ANNN 
Chemistry
CH3COOH + C5H12O > C7H14O2 + H2O If the yield for the reaction is 45%, how many grams of the product are formed when 3.58 g of acetic acid are reacted with 4.75 grams of isopentyl alcohol? Millimoles of acetic acid= 59.6667 Millimoles of isopentyl
asked by David 
Physics
As Alan is taking a shower, the soap falls out of the dish and Alan steps on it with a force of 500 N. If Alan slides forward and the frictional force between the soap and the tub is 50 N, what is the coefficient of friction between these two surfaces?
asked by Micah 
English
Thank you very much for your help.Here are some more sentences I'm not sure of. 1) An ancient mariner stops one among three wedding guests. This is fascinated by the mariner's grey beard and above all by his glittering eye. 2)The mariner seems to appear
asked by Franco 
Calc.
A ladder 25ft long is leaning against the wall of a house. The ladder is pulled away from the wall at a rate of 2 ft per second. How fast is the top of the ladder moving down the wall when its base is 7ft from the wall?
asked by Preston 
Physics
As Alan is taking a shower, the soap falls out of the dish and Alan steps on it with a force of 500 N. If Alan slides forward and the frictional force between the soap and the tub is 50 N, what is the coefficient of friction between these two surfaces?
asked by Micah 
Physics
As Alan is taking a shower, the soap falls out of the dish and Alan steps on it with a force of 500 N. If Alan slides forward and the frictional force between the soap and the tub is 50 N, what is the coefficient of friction between these two surfaces?
asked by Micah 
7th grade
one side of a rectangle is 15 centimeters longer than the other side. the perimeter of the rectangle is 94 centimeters. what is the width of the rectangle?
asked by jaeden 
English
1. I want to do volunteer work at the Chicago Orphanage. 2. I want to do volunteer at Chicago Orphanage. (Which one is right? Do we have to use 'the'?)
asked by rfvv 
Algebra II
I have a question The range of y = 1/(x5) is All real Numbers True or False I think it is false because it should be all real numbers except y shouldn't equal 0. Is that correct or don't I understand itPlease explain if I'm wrong. Thanks
asked by Matt 
math 116
a. Write an equation in the “y = mx + b” format for the canal that runs through the Toaster Company property. Solve for “m” and “b” in the “y = mx + b” formula. The canal crosses the xaxis at 16 and crosses the yaxis at 3. See the chart
asked by dwayne 
chemistry
find the mass of C3H8 required to generate 2.5x10^8 KJ of energy when combusted with O2 gas to produce CO2 gas and water vapor
asked by sara 
math
the first term of an arthmetic progression is 1 and its last term is 28, find the sum of the progression if their number is 10
asked by sonia 
Math.
A butcher has 18 2/3 pounds of steak that he wishes to place into packages that average 2 1/3 pounds each. How many packages can he make?
asked by Unknown. 
Physics  help please!
A 20 kg mass is at rest on a level surface where the coefficient of static friction is 0.68. a) How much force will it take to get the mass to move. b) If a horizontal applied force of 72 Newtons is acting on the mass, how much friction is acting?
asked by Leah 
college
Using PVC Pipes for building a teepee and I nees to know, how to figure out how long the pieces should be for 12 feet across and 8 feet tall to build this teepee in my yard?
asked by Anonymous 
college
What is an example that illustrate utilitarianism?
asked by Anonymous 
algebra
$6 for two pounds is an example of unit rate. True or False?
asked by Samantha 
college algebra HELP
The population of a city was 166 thousand at the begining of 2004. The exponential growth rate was 1.5% per year. Use the formula P(t)=P[o]e^(kt) where P[o] is the population in 2004 and k is the exponential growth rate. a) predict the population in 2016,
asked by samantha 
science
what is sparting?
asked by garrett 
statistics
if the mean of a set of data is 23.00 and 10.00 has a zscore of 1.30, then the standard deviation must be?
asked by John 
Algebra
To convert from centimeters to inches, multiply the number of centimeters by 2.5. True or False?
asked by Samantha 
physics
A car is traveling at 45.0 mi/h on a horizontal highway. (a) If the coefficient of static friction between road and tires on a rainy day is 0.100, what is the minimum distance in which the car will stop? ____ m (b) What is the stopping distance when the
asked by natalie 
Math: Calculus
A fence is to be built to enclose a rectangular area of 230 square feet. The fence along three sides is to be made of material that costs 5 dollars per foot, and the material for the fourth side costs 15 dollars per foot. Find the dimensions of the
asked by REALLY NEED HELP!!! 
Physics 11
How much would a 80kg astronaut weigh on Earth? How much would they weigh 500 km above the surface of the Earth? Thank you!
asked by Cole 
HIT 105 research paper
I am doing a paper on HIPAA and I need to cite my work. Have the paper finished but I am having problems citing my work. Could someone help me please?
asked by Theresa 
chemistry
A flask is charged with 0.124 mol of A and allowed to react to form B according to the reaction A(g) →B(g). The following data are obtained for [ A ] as the reaction proceeds: Time (s) 1 10 20 30 40 Moles of A 0.124 0.110 0.088 0.073 0.054 how do i solve
asked by JES 
curriculum content
which is the oldest art? A.Dramtheater B. photography C. Dance D. music
asked by carlo 
chemistry
Two gases are contained in gas bulbs connected by a valve. Gas A is present in a 56 L bulb at a pressure of 213 torr. Gas B exerts a pressure of 683 torr in a 74 L bulb. What is the partial pressure of gas B after they equilibrate once the valve has been
asked by Bob 
Networking
I was wondering if when I posted my paper, everyone would help me proof it and help me find references, I've done most of it by memory, and what I would do situations, but I need references. If you would that'd be awesome
asked by Nicholas 
Chemistry
what is the solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS from highest to lowest
asked by Ali 
ap calc bc
hello! what is the derivative e^4 ???? thank you!
asked by APpreciative student 
math 5TH GRADE
how many boxes can you find that will hold two times as many cubes as a 2 by 3 by4 box.record each of the dimensions
asked by Arjel 
lee senior
what is 2x+y=4
asked by brittany 
statistics
Does the 99 percent confidence interval include the value suggested by the NCAA? Interpret this result.
asked by Anonymous 
MATH
instrctions:graph each linear equation .tell whether it represents a function. 1.) x+y=4 HELP QUICK PLEEZE!!!!!!!!!!!!!!!!!!!!!
asked by gaby 
Physics
A father (mF = 83 kg) and his daughter (mD= 43 kg) stand on a flat frozen lake of negligible friction. They hold a 13 m long rope stretched between them. The father and daughter then pull the rope to bring them together. If the father is initially standing
asked by Jessica 
Sociologyplease help me!
why is the gap between the rich and the poor growing according to Robert Reich in "What happned to the American Social Compact"?
asked by Vivian 
English
1. I am going to do volunteer work at a cultural center. 2. I am going to do volunteer work at a community center. 3. I am going to do volunteer work at a community cultural center. (Are they all the same? Which one do we have to use?) 4. I am going to do
asked by rfvv 
English
How does the Scarlet letter A affect Hester Prynne's personality and her thinking concerning the position of women in society?
asked by Savannah 
physics
A bicycle accelerates from 0.0 m/s to 18 m/s in 4.4 s. What distance does it travel?
asked by Anonymous 
math 116
a. Write an equation in the “y = mx + b” format for the canal that runs through the Toaster Company property. Solve for “m” and “b” in the “y = mx + b” formula. The canal crosses the xaxis at 16 and crosses the yaxis at 3. See the chart
asked by dwayne 
Science
how do you find the degrees for a pie graph (ex) 1st 19 2nd 15 3rd 20 4th 15 5th 22 6th 15 ??? plz help!
asked by popcorn010 
chem
When the question asks for the qualitative pH of NH3, how would I find the answer?
asked by nicole 
Word within the Word Analogy Help
Magnanimous : pusillanimous :: A) reputable:disreputable B) matrilineal:matriarchal C) megaton:megalomania D) creation:devastation Contrapuntal:polyphony:: A) contradictory:disruption B) paradox:orthodoxy C) metrical:poetry D) sangfroid:consanguinity
asked by Amy 
Physics
A satellite orbits Earth at a distance of 3rearth above Earth's surface. (Earth mass equals 5.97 X 10^24, earths equatorial radius equals 6.38 X 10^6) How many Earth radii is the satellite form Earths center?
asked by mercedes 
Physics
Forces of 10.6 N north, 20.8 N east, and 14.3 N south are simultaneously applied to a 3.76 kg mass as it rests on an air table. What is the magnitude of its acceleration? What is the direction of the acceleration in degrees? (Take east to be 0 degrees and
asked by Mike 
physics
What would be the weight of 22.0kg dog at the equator on Saturn's surface? (Saturn's mass equals 5.69 X 10^26kg, Saturn's equatorial radius equals 6.03 X 10^7m, Earths mass equals 5.97 X 10^24)
asked by mercedes 
physics
A satellite orbits Earth at a distance of 3rearth above Earth's surface. (Earth mass equals 5.97 X 10^24, earths equatorial radius equals 6.38 X 10^6) What is the magnitude of the gravitational acceleration of the satellite?
asked by mercedes 
Radioactivityto science tutors
Thompson assumed that the amount of positive charge and negative charge in an atom was equal. Was this a reasonable assumption? I really do not understand this. I tried looking up on the site, but information there wasn't so clarified.
asked by Anonymous 
world history
I was wondering how to spell Ida Peeiffer I mean like this lady couldn't even find it on the internet how crazy is that.
asked by Allie 
dvery
Which economic system is the best solution to handling a crisis of epic proportion?
asked by keni 
Chemistry
Sodium Vapor lamps emit a characteristic yellow light . What can we deduce about sodium atoms, based on this observation? Please help!!
asked by Natasha 
physics
A 50kg astronaut experiences an acceleration of 5.0g (up) during liftoff. What is the astronaut's true weight and apparent weight?
asked by mercedes 
algebra
a storage bin is shaped like a cylinder with a hemisphere shaped top. the cylinder is 45 inches tall. the volume of the bin is 4131 pi cubic inches. find the radius of the bin. i think [4(pi)r(cubed)]/3=volume of hemisphere and h (pi) r squared volume of
asked by ken 
algebra
sketch the graph of quadratic function. identify vertex and x intercepts f(x)(x3)squared1
asked by frank 
English
I need some ideas of novels,songs,comics etc.(preferebly a song) that share similar views as Transcendentalists Here are some views of the Transcendentalists: Intuition they think we can understand ourselves through nature.  Individualism(the fact of
asked by Karen 
math
sketch the graph of quadratic function. identify vertex and xintercepts f(x)=(x3)squared1
asked by frank 
math
find all real zeros and their multiplicity of the polynomial function f(x)=5(x4)squared(x+2)
asked by frank 
11th grade
Sodium Vapor lamps emit a characteristic yellow light . What can we deduce about sodium atoms, based on this observation?
asked by Natasha 
PHYSICS HELP!
Suppose there is a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, there is an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = w2)
asked by emily 
physics
Suppose the elevator now accelerates down ward at a constant rate of 0.13 g. What is the ratio of the new scale reading to the value W of the scale reading when the elevator is at rest?
asked by Miranda 
Physics HELP!!! Potentials and Fields
Two identical metal plates with small holes are aligned a distance L=6.7 cm apart. They have a potential difference of 131 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters
asked by Molly 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on
asked by Bala 
college
If a tax is placed on the producers of good Y, the consumers of good Y will end up paying the greatest amount of the tax if the elasticity of demand for good Y is Elastic. Inelastic. Unit elastic.
asked by john 
AP Biology
I have two questions: 1. Why are action potentials usually conducted in only one direction along an axon? A. The axon hillock has a higher membrane potential than the terminals of the axon. B. The brief refractory period prevents reopening of voltagegated
asked by Nikki 
HELP i dont get it
The producer of X is contemplating a price change and has asked for your advice. After some empirical investigation, you conclude that the price elasticity of demand for X is 0.75. Your advice to the producer is to Increase price to raise total revenue.
asked by john 
Math
I don't understand how to solve equations with logarithms very well...can you help please? here is one im stuck on: log (3r+5)= 5 2 Thanks!!
asked by Taylor 
math
5/91/12
asked by lily 
algebra 1
there are 5 rows of pictures with 3/16 inch of vertical space between pictures.Draw a diagram and label all the heights on your diagram then write and solve an equation to find the height of each picture
asked by sara 
tt
how do u write a 10 page essay in 1 hour?
asked by egts 
chemistry
What do the values or R, G, and B mean in terms of the energy of light.
asked by Chayanne Hyde 
9th grade
you push a book on a table so that its velocity is constant. If the force you apply is 15 N, what is the force due to sliding friction
asked by bria 
phsyics
Each of the space shuttle’s main engines is fed liquid hydrogen by a highpressure pump. Turbine blades inside the pump rotate at 617 rev/s. A point on one of the blades traces out a circle with a radius of 0.020 m as the blade rotates. (a) What is the
asked by jack 
PHYSICS
A bullet is fired horizonatally at a target 100 m away and hits 0.5 m below the target. what is the velocity of the bullet?
asked by Cas 
chemistry
how do you determine what species are present in NH3 soltuion? I don't understand what exactly the species are.
asked by nicole 
graphing
How do you graph y= log (base 5)(x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?
asked by Ali 
physics
Wiley Coyote has missed the Road Runner once again. This time he leaves horizontally off the edge of the cliff at 25 m/s. If he hits the 400 m from the base of the cliff, how high is the cliff?
asked by Cat 
Remembrance day
What does this line from the poem Flander's Fields mean? Take up our quarrel with the foe
asked by Anonymous 
Math
log base 2 (3r+5)= 5
asked by Taylor 
math
what is the answer to 2/7+3/4=
asked by lily 
General Question
How might a potential employer evaluate your writing if you did not use proper verb tenses? Why? General question, I ned others perspective on to help answer this question. thanks
asked by BC 
Physics
An Alaskan rescue plane drops a package of emergency rations to a stranded party of explorers. The plane is traveling horizontally at 40.0 m/s at a height of 100 m above the ground. a) How far horizontally from the dropping point does the package strike
asked by Catherine 
Math
What is the answer and how the steps to solving y15/32=2 6/7
asked by LaLa 
Algebra II
What is the domain of y = 2/(x) + 2 x>0 x=0 All real numbers except x = 0 I think the domain is All real numbers except x = 0 Is that correct?
asked by Matt 
Math
Fireworks are fired at an angle of 82degrees with the horizontal. They are expected to explode about 100 m in the air, 4.8 secs after they are fired. What is the initial velocity of a shell fired from ground level. I think I have to find the vertical and
asked by KC 
Physics HELP!!!
In a classic model, the electron of a hydrogen atom circles the proton at a radius of 0.0529·10−9m when it is in the n=1 state. What is its electric potential energy?
asked by Ryan 
Chemistry
A chemist wants to make 4.5 L of a 0.310 M CaCl2 solution what mass of CaCl2 (in g) should the chemist use
asked by Lisa 
chemistry
What are ways of disposing concentrated sulpheric acid?
asked by Charmaine 
Physics
If it requires 7.0 of work to stretch a particular spring by 2.1 from its equilibrium length, how much more work will be required to stretch it an additional 3.7?
asked by Stew 
Chemistry
If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?
asked by Lisa 
Chemistry
For the reaction shown, compute the theoretical yield of the product (in grams) Ti(s)+2Fe(g) = TiF2(s) 6.0 g Ti, 6.0g F2
asked by Lisa 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on
asked by Bella 
help quick pleeze
WITHOUT GRAPHING tell whether each point is on the graph of y=4x1. (1/2,1)
asked by gaby 
adult education
1. What are the primary roles of media delivering news to the public?
asked by Anonymous 
Finance
Cascade Mining Company expects its earnings and dividends to increase by 7 percent per year over the next six years and then to remain relatively constant thereaft er. Th e fi rm currently (that is, as of year 0) pays a dividend of $5 per share. Determine
asked by Linda Chapman 
english
This teen romance doesn't have a single authentic moment, from its canned tragedy setup . . . to its powerballad finale . . ." wich one would it be? authenticity? universality? aesthetics?
asked by frank 
Chemistry
Magnesium forms both an oxide and a nitride when burned in air. Discuss the formation of magnesium oxide and magnesium nitride when magnesium atoms react with oxygen and nitrogen atoms.
asked by Valerie Ayala 
Chemistry
Discuss the formation of the nickel ion with a 2+ oxidation number.
asked by Valerie Ayala 
PHYSICS
Two satellites A and B are in different circular orbits about the earth. The orbit speed of satellite A is three times that of satellite B. Find the ratio (TA/TB) of the periods of the satellite.
asked by jack 
spanish
¿Quién va a preparar la ensalada? Mirta y Lidia Your response: mirta y lidia las va a preparar 3.¿Quién va a cocinar la paella? Alberto y su novia Your response: alberto y su novia los va a cocinar. ¿Quién va a limpiar el apartamento después de la
asked by HELP 
spanish
¿Quién compró los mariscos? Rosa Your response: rosa la compré Points earned: 0 out of 1 2.¿Quién preparó la ensalada? Mirta y Lidia Your response: mirta y lidia las preparó Points earned: 0 out of 1 3. Quién cocinó la paella? Alberto y su novia
asked by What am i doing wrong 
physics
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3640 kg space tug and a 6500 kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are
asked by phillip 
math
Write a proportion for each phrase. Then solve. When necessary, round to the nearest hundredth. 75 points scored in 6 games; p points scored in 4 games
asked by Anonymous 
spanish
Your grandparents are arriving in a few hours, and your mother has a lot of questions. Answer her questions using directobject pronouns. Y tú, ¿estás preparando las empanadas? Your response: Si, los estás empanadas ¿Están tu papá y tu hermano
asked by What am i doing wrong 
Physics
A ball is launched horizontally from the top of a 320 m high building. For the first 7 seconds of flight, make a table of the vertical position from the ground versus time similar to the one below using Excel Time (sec) Vertical Position (m) 0 320 1 2
asked by pat 
English
For my essay I have to write about a character in Middlemarch by George Eliot and explain how the character is brought to life. How does she (the author) introduce, develop, and represent the character? I'm thinking about writing about Dorothea or
asked by Jake 
English
What is the subject and predicate of. Bloomers were the first slacks for women. Subject Bloomers predicate were the first slack? These pants were very loose and comfortable. Subject pants predicate loose comfortable?
asked by Carla 
Algebra
Find the product of (x^2  3x + 5) with the quotient of (10x^6  15x^5  5x^3) ÷ 5x^3. I need some help with this. I'm really unclear on the steps and how to solve this as a whole. I don't just need an answer, I'd like to know the steps as well. Please?
asked by Acezar 
chem.
CH3COOH + C5H12O > C7H14O2 + H2O If the yield for the reaction is 45%, how many grams of the product are formed when 3.58 g of acetic acid are reacted with 4.75 grams of isopentyl alcohol? Millimoles of acetic acid= 59.6667 Millimoles of isopentyl
asked by David 
statistics
Looking for help with some of my stats homework, I got parts of it but then hit a brink wall. Any help would be welcome. A recruiter estimates that if you are hired to work for her company and you put in a full week at the commissioned sales representative
asked by Valerie 
word scramble
can you help me unscramble these compound words? sbytbai,rliagotelsnkr,vindrie,oclletnsfro,pattiemr,tecaeikds,vitfyineen,rleboriahwnt,ekediasrwt,oddiefhasonl
asked by JW 
english
1 Sentence thesis on Jules Verne "A journey to the center of the earth"?
asked by Robert 
physics
What is the approximate mass of air in a living room 6.0 m times 3.9 m times 2.7 m?
asked by emily 
Physics
A swimming pool 16.0 m by 9.1 m and uniform depth is 2.0 m. What will be the pressure against the side of the pool near the bottom?
asked by robin 
chemistry
A piece of solid carbon dioxide, with a mass of 7.4 g, is placed in a 4.0L otherwise empty container at 27°C. (a) What is the pressure in the container after all the carbon dioxide vaporizes? 1.0atm (b) If 7.4 g solid carbon dioxide were placed in the
asked by Mattie 
9th grade
WHAT IS THE SQUARE ROOT OF 192?
asked by BRITTANY 
social studies
Into what ocean do most of South America's rivers flow?
asked by kayla 
English
Thank you very much for your help. I still ha a few doubts on a few sentences.I hope you can have a look at them, too 1)Tess has heard about Mickey by her friend Storm. Mickey is broke. He’s got a job as a dish washer. He works every evening after school
asked by Franco 
8th grade
how do seed banks preserve seeds for future generations?
asked by David 
Pre Calc.
Use limits to describe the behavior of the rational function near the indicated asymptote f(x)=3/x4
asked by L. 
Physics
A 10 kg ball moving due west at 2m/sec collided with a 4kg ball that is moving due east at 3m/sec. you determine that immediately after the collision the 10 kg ball is moving due west at .57 m/sec. a) this probably is a totally elastic collision b) this
asked by Jael 
pre Calc.
Describe the behavior of the function near the vertical asymptote. Is there another way to word this problem so that I might understand? Seriously, I have gotten everything so far, so is this just worded weird?
asked by L. 
ph
A spring (70 {\rm N/m}) has an equilibrium length of 1.00 {\rm m}. The spring is compressed to a length of 0.50 {\rm m} and a mass of 2.1 {\rm kg} is placed at its free end on a frictionless slope which makes an angle of 41 ^\circ with respect to the
asked by Anonymous 
physics
Use principles of force and kinematics to answer these: a. A 40 kg skater pushes on the 60 kg skater (initially at rest). As they collide, the 40 kg skater pushes on the 60 kg skater, applying a force 100 Newtons for 1.2 seconds. Find the velocity at which
asked by jen 
3rd grade
why did us want to buy small part of louisiana territory
asked by nick 
physics
If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time?
asked by Catherine 
physics
A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.840 m. Determine the acceleration of the bullet (uniform acceleration)
asked by Cassie 
scinces
why are so many niches available on recently deastated island?
asked by Anonymous 
ph
A spring (70 {\rm N/m}) has an equilibrium length of 1.00 {\rm m}. The spring is compressed to a length of 0.50 {\rm m} and a mass of 2.1 {\rm kg} is placed at its free end on a frictionless slope which makes an angle of 41 ^\circ with respect to the
asked by Anonymous 
Math
If Rupert flew 3/16 of the way around the world but George only flew 4/9 as far as Rupert, how far around the world did George fly?
asked by Rob 
Physics
A baseball is popped straight up into the air and has a hangtime of 6.25 s. Determine the height to which the ball rises before it reaches its peak.
asked by Jordan 
PHYSICS
The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the deck to the street below.
asked by CASS 
English
I posted earlier but i wanted to added something... I need have to find a song that share similar views as Transcendentalists Here are some views of the Transcendentalists: Intuition they think we can understand ourselves through nature. 
asked by Karen 
Physics
How many calories of heat are gained to turn 10 grams of ice at 0 C into water at 0 C?
asked by Amanda 
physics
A quarterback throws a football toward a re ceiver with an initial speed of 25 m/s, at an angle of 29◦ above the horizontal. At that instant, the receiver is 19 m from the quarter back. The acceleration of gravity is 9.8 m/s2 . With what constant speed
asked by KAY 
chemistry
if 3.ooml of cyclohexanol were used in the dehydration reaction, what is the theoretical yield of cyclohexene?
asked by Jill 
p``
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3640 kg space tug and a 6500 kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are
asked by megan 
scinces
If a pair of mice is released on an island what might happen ot the population of finches living there?
asked by Dj Murray 
chemistry
What volume of HCl gas is produced by the reaction of 2.4 liters of H2 gas with 1.5 liters of Cl2 gas? (Volumes are at the same T and P.) 1. 3.0 liters 2. 4.8 liters 3. 0.75 liters 4. 2.4 liters 5. 1.5 liters
asked by Bob 
Chemistry
If you have red solution, at what wavelengths should it absorb light, at what wavelengths should it NOT absorb light?
asked by samantha 
Numerical method  numerical integration
Evaluate the following integration: I(f) = integral sign from 0 to 20 of e^(x) dx 1. Analytically 2. Rectangle method with h= 10,5,4,2,1. 3. Midpoint method with h= 10,5,4,2,1. 4. Trapezoidal method with h= 10,5,4,2,1. 5. Simpson's method with h=
asked by Anonymous 
math
Have 2 questions: 1. Factor Trinomial competely x^2 + 8x + 53 (reads as x squared plus 8x plus 53) I am thinking it is prime. 2. Solve 4x^2 + 23x  30=0 (reads 4x squared plus 23x minus 30 equals zero
asked by Lynne 
Statistics
What type of data must you collect to conduct a ttest? Why?
asked by Ann 
Economics
Indicate the effect that each of the following conditions will have on a company's average variable cost (AVC) and average total cost (ATC) curves: a. The movement of a company's administrative offices from New York City to New Jersey where rent costs are
asked by G 
chemistry
Can someone please explain this question to me, i am not sure if i am right but i think the answer is 2? How many of the following elements have 2 unpaired electrons in the ground state? how many of the following elements have 2 unpaired electrons in the
asked by sam 
Chemistry
2 B5H9(l)+12 O2(g)>5 B2O3(s)+9 H2O(l) Calculate the kilojoules of heat released per gram (kJ/g) of the compound reacted with oxygen. The standard enthalpy of formations of B5H9(l), B2O3(s), and H2O(l) are 42.84, 1271.94, and 285.83 kJ/mol,
asked by W 
chemistry
the dissociation of molecular iodine into iodine atoms is represented as: I2 =2I Suppose that .0256 mole of I2 was placed in a 2.30 L flask at 1000K. what is the intial concentration of the I2 before any reaction occurs?
asked by Claire 
8 grade sciences
Why are so many niches available on recently devastated islands such as Galapago's island?
asked by Dj Murray 
Chemistry
At equilibrium, [S(CH2CH2Cl)2] = 350 M, [SCl2]=.325M, and [C2H4] =.273 M for the reaction below. SCl2 + 2C2H4 = S(CH2CH2Cl)2 What is the Kc?
asked by Missy 
government
Candidatecentered politics is least characterized by a heavy reliance on
asked by jkhjkgkj 
Chemistry
Write the equilibrium constant expression for the reaction: 2NO +2H2 =N2+2H2O Kc=?
asked by Stephany 
chem
What would be the reaction between Mn2+ and NH3? is it Mn(NH3)? and would this solution react with HNO3, considering it would already have NO3 in it?
asked by nicole 
math
how would you write an equaton if you deposit $3200 into an account that earns 6.2% interest, compounded continuously?
asked by j.davis 
English
For my essay I have to write about a character in Middlemarch by George Eliot and explain how the character is brought to life. How does she (the author) introduce, develop, and represent the character? I'm thinking about writing about Dorothea or
asked by Jake 
science
if a thermometer contained a gram of mercury, how much would the volume of the mercury change when the temperature rose from 0 degrees celcius to 30 degrees celcius?
asked by james 
Math
Latoya has 3/4 of a bag of popcorn. If she eats half of the popcorn at a movie, ho much does she have left?
asked by Rob 
math
question is 40x^2 + 23x 30 = 0 reads as 40x squared plus 23x minus 30 equals zero...please help, we have not learned the quadric formula yet so we are finding the numbers that make 30 and add to 23.
asked by lynne 
Physics
I solved the following question: "A ball is launched from the top of a 320 m high building at 50 m/s at an angle of 37 degrees to the horizontal. For the first 10 seconds of flight, make a table of the vertical position from the ground versus time similar
asked by Joe 
chem
complete this reaction 2 NaNO3 + ht →
asked by dan 
Chemistry college
The standard enthalpies of formation of ions in aqueous solutions are obtained by arbitrarily assigning a value of zero to H ions;that is, delta H(f) [H+(aq)]=0 A.for this reaction: calculate delta H(f) for the Cl ions. HCl(g) ==H2O==>H+(aq)+Cl(aq) delta
asked by Willy 
physics please hep
Suppose that the graph of force vs. time for a very unusual spring has only straight lines. The cart hits the spring at t = 3.00 s, so force F = 0 up to that point. Then, after t = 3.00 s, the force increases linearly until it reaches a maximum at Fmax =
asked by taylor 
physics please help
suppose a cart of mass m = 969 g is initial moving at speed v0 = 5.17 m/s. It strikes a spring attached to a fixed wall, comes to a stop, and bounces back at speed vf = 4.48 m/s. Assume the track is frictionless. a) Find the magnitude of the impulse
asked by john 
arithmetic
is 1/8 in the simpelest form
asked by Anonymous 
grade 11 math
I don't get how to do this. I'm so lost please help me. Determine the equation of the parabola with roots 2+√3 and 2√3, and is passing through the point (2,5) this is what i did but its the wrong answer: y= a[x + (2+√3)] [x+(2√3)] 5= a[2 +
asked by priya 
help me physics
suppose the cart has mass m = 203 g, and it strikes the clay at speed vo = 5.24 m/s and comes to a dead stop. Assume the track is frictionless, and the clay is crushed inward by 1.83 cm. a)Find the magnitude of the impulse exerted by the clay on the cart.
asked by jason 
Finance
Simtek currently pays a $2.50 dividend (D0) per share. Next year’s dividend is expected to be $3 per share. Aft er next year, dividends are expected to increase at a 9 percent annual rate for three years and a 6 percent annual rate thereaft er. a. What
asked by Linda Chapman 
science need help!
i am doing questions and i just want to say i need help the question says ____________ affects how much moisture is in the air i don't get it
asked by Sophie 
math
Information related to Hermesch Company for 2011 is summarized below. Total credit sales $2,200,000 Accounts receivable at December 31 825,000 Bad debts written off 33,000 What amount of bad debts expense will Hermesch Company report if it uses the direct
asked by vivian 
Calculus  integration
Q. ¡ò(15^x/3^x) dx i know that the ¡ò(a^x) dx = a^x/lna +c but i don't know how to solve this question. thank you
asked by L 
chemistry
balance the followig example of a heterogeneous equilibrium and write its reaction quotient, Qc: S8 + F2=SF6 i've balanced it i think i got S8 +24F2 =8SF6 but when i try it it keeps telling me that i'm wrong when i write out the Qc
asked by Stephany 
chem need assistance
Write a balanced chemical reaction to show the reaction between ammonium and a chlorite? Is this correct? 2NH3 + CLO2 + H2O ⇒ NH4Cl + NH2O2
asked by dan 
Chemistry
The Kc for the reaction below is 4.8 X 10 ^10. 1/2 N2 +1/2 O2 = NO what is the Kc for the following reaction? 2NO=N2 +O2
asked by Missy 
chemistry
How do i find the change in the moles gas for a reaction? example MgCO3 = MgO +CO2
asked by Shea 
spanish 6th grade
how do you say what is your favorite food in spanish
asked by Sophie 
science
Animals use the energy found in food to produce _____ and _____.
asked by Anonymous 
chemistry
if A(aq) + B(aq) = AB(aq), and the molarity of A in the solution is 0.60 M and the molarity of B in solution is 0.60M, calculate the enthalpy of the reaction, delta Hrxn, for the formation of 1 mole of AB solution.
asked by alex 
phyics
i need help setting it up to find the answers. (answers included) two masses are connected together by a string which is then hung over a pulley. m1= 7.50 kg and m2= 6.50 kg. before they are released m1 is suspended h= 135cm above the floor while m2 is
asked by danielle 
chemistry
if A(aq) + B(aq) = AB(aq), and the molarity of A in the solution is 0.60 M and the molarity of B in solution is 0.60M, calculate the enthalpy of the reaction, delta Hrxn, for the formation of 1 mole of AB solution.
asked by alex 
Algebra
In 1992, the life expectancy of males in a certain country was 71.4 years. In 1996 it was 73.6 years. Let E represent the life expectancy in year t and let t represent the number of years in 1992. E(t)=____t+____ Use the function to predict the life
asked by Deborah 
Biology
(1)How are the processes and end products of mitosis and meiosis similar? (2) How are the processes and end proucts of mitosis and meiosis different?
asked by Laticia Gordon 
Math
what is 3(x)6(x) show work please
asked by max 
physics
In a game of pool, the cue ball strikes another ball of the same mass and initially at rest. After the collision, the cue ball moves at 3.10 m/s along a line making an angle of 27.0° with its original direction of motion, and the second ball has a speed
asked by Vipre 
ethics
What are some of the consequences of violating a workplace standard?
asked by Anonymous 
math
find the equivalent fractions with the common denominator of 12
asked by stef 
ethics
What are the consequences of violating a societal norm?
asked by Anonymous 
Chemistry
If 36.00 mL of KMnO4 are required to oxidize 25.00 mL of 0.02932 M NaC2O4 solution, what is the concentration of KMnO4?
asked by Sydney 
algebra urgent !!!!
how to get from step 2 to step 3 1. (x^3 + y^3) + xy(x + y) 2. (x + y)(x^2  xy + y^2) + xy(x + y) 3. (x + y)(x^2 + y^2) objective: factorization
asked by vaishnavi 
Chemistry
how to determine the change in the number of moles of gas in the reaction 2H2 g + O2 g= 2H2Ol i thought it was 2 because the product is a liquid but that isn't correct
asked by Blair 
CHEMISTRY
1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution? 2)A Certain brand of iron supplement contains FeSO47H2O with miscellaneous binders and fillers. Suppose 22.93 mL of the
asked by yipez 
CHEMISTRY
1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution? 2)A Certain brand of iron supplement contains FeSO47H2O with miscellaneous binders and fillers. Suppose 22.93 mL of the
asked by yipez 
math grade 11
I need help with this question determine the values in k for which the function f(x)= 4x^23x+2kx+1 has two zeros. Check these values in the original equation. i don't get how to do it please help me.
asked by priya 
5th grade
How do you write a mixed number as a decimal such as 1/2 and the whole number 3? Also 3/4 and the whole number 4. Also 1/5 and the whole number 7. Thank you who will may help me!:)
asked by sophia 
business
2. You are in the process of a major Spring Clean in your home/bedroom/office/garage. You have identified a variety of new and used items that you are no longer using. With summer around the corner you could use a bit more cash for a little vacation.
asked by maria 
human resources
Does the world have enough natural resources for 8 or 10 billion people to live decent, secure, happy, fulfilling lives? What do those terms mean to you? Try to imagine what they mean to others in our global village.
asked by Anonymous 
math
how long would it take for the investment to triple using this equation: A=3200e^(0.062t) and would i solve this
asked by j.davis 
ethics
Why do you think employers don't want you to use social networking sites at work? What would be the consequence of dressing inappropriately at your place of work? What would happen if someone did?
asked by Anonymous 
Physics
A 150g block on the end of a spring with a spring constant of 35N/m is pulled aside 25 cm and released from rest. In the electrical analog the maximum charge on the capacitor is 0.25 C. The maximum current in the LC circuit is:
asked by Anonymous 
english 3
Came to America to find freedom to worship and the Promised Land
asked by Anonymous 
Math
I was given this by my teacher for extra credit 1 _ _ _ _ _ 1 _ the blanks are numbers from 09 excluding 1 since it was given. I need to know how many possible combinations are left and if there is a good website that will generate all the combinations.
asked by Karl Smith 
science
magnetite will attract this
asked by t 
6th grade science
magnetite will attract this
asked by t