Questions Asked on
March 13, 2011

statistics
A researcher at a major hospital wishes to estimate the proportion of the adult population of the U.S. that has high blood pressure. How large a sample is needed in order to be 99% confident that the sample proportion will not differ from the tgrue
asked by chalulu 
Statistics
IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the x score that corresponds to a zscore of 2.33.
asked by chalulu 
Physics
A block of mass m is placed in a smoothbored spring gun at the bottom of the incline so that it compresses the spring by an amount x_c. The spring has spring constant k. The incline makes an angle theta with the horizontal and the coefficient of kinetic
asked by Trevor 
physics
4. What is the electric potential at the surface of a gold atom’s nucleus, which is assumed to be spherical? The radius of a gold nucleus is 6.6 x 1015 meters and the atomic number of gold is 79.
asked by lol 
psychology
prescott is an old hand in the print shop. he insists that there's only one dependable kind of process for printing a threecolor brochure. by contrast, baldwin recognizes several different approaches to threecolor printing throught the use of new digital
asked by alisha s. 
Physics
Three resistors (14.4 Ω, 21.7 Ω, 14.1 Ω) are connected in parallel across 98 V. What is the total resistance for this circuit? What is the voltage drop across the 21.7 Ω resistor? What current is flowing in the 14.1 Ω resistor? What is the total
asked by Joan 
chemistry
Silver chloride can be prepared by the reaction of 100mL of 0.20M silver nitrate with 100mL of 0.15M calcium chloride. after the reaction goes to completion, what concentration of which ion remains in solution?
asked by Jon 
HUMAN RELATIONS
When people don't clearly recognize the obstacle causing their frustration, they A. will probably strike out at any convenient target. B. usually won't become aggressive. C. are said to be experiencing a minor frustration. D. won't resort to physical
asked by Anonymous 
Science
Which are the keystone species from the chaparral biome
asked by Anna 
Calculus
A boat is pulled into a dock by a rope attached to the bow of the boat an passing through the pulley on the deck that is 1m high than the bow of the boat ,if the rope is pulled im at the rate of 0.8m/s how fast does the boat approach the deck when it is
asked by Mehak 
Chem
a) An ethylene glycol solution contains 21.1 g of ethylene glycol in 86.0 ml of water. compute the freezing point of the solution. b) Compute the boiling point of the solution.
asked by Emilene 
chemistry
addition of a strong acid would increase the solubility of which of the following salts AgCl CaSO4 CdS CaCO3 PbBr2 CaHPO4 Cd(OH)2 AuCl
asked by Emily 
CHEMISTRY
Which of the following solutions contain the greatest total ion concentration? a) one mole of potassium chloride dissolved in 1.0L of solution b)one mole of sodium phosphate dissolved in 1.0L of solution c)one mole of ammonium carbonate dissolved in 1.0L
asked by Jon 
math
an isosceles triangle has a vertex at the origin. Determine the area of the largest such triangle that is bound by the function x squared + 6y = 48 and explain why this is infact the maximum area.
asked by Tomas 
ALGEBRA
A farmer has 165 feet of fencing material in which to enclose a rectangle area. He wants the length x to be greater than 50 feet and width y to be no more than 20 feet. write a system to represent this situation.
asked by Casey 
Physics
Find the number of revolutions of a bicycle wheel of diameter 0.7m when the bike goes a distance of 22m down the street.
asked by Anonymous 
science
how many halflives have passed if 87.5% of a substance has decomposed? how many if 99.999% has decomposed?
asked by Kim 
physics
1. How far apart must two protons be if the electrical force of repulsion acting on either one is equal to its weight?
asked by okay 
Social Studies
Can you answer these questions: 1. Under the Articles of Confederation, the greatest amount of power was in the hands of the a) Congress b) American People c) National Government d) states 2. The structure of the Congress was created at the Constitutional
asked by S... 
math
why did everybody goto the boat show?
asked by tracy 
Math
The circular rug is placed on a square floor. The rug touches all four walls. How much of the floor space is not covered by the rug? The square floor is 14 feet for length and width.
asked by Jenny 
economics
show working production function: q = 6l – 0.5l2 where q = number of car washes per hour and l = number of workers. a) generate a schedule showing total product, average product and marginal product. (5 marks) b) the price of a basic car wash is $50. how
asked by Soanz 
MATH
Please check my answers: How are the symbols 3/4, 0.75, and 75% related? They are all different ways to express the same number. 2.(4pts) Use inductive reasoning to predict the next number in the sequence. 1, 2, 2, 4, 4, 8, . . .8 because each number after
asked by Anonymous 
English 9Please recheck answer and provide some d
I have a question about the short story "Son" by John Updike. I have research this and read it but find it very confusingI have two answers totally eliminated and would just like some inputThank you so much Is "Son told in a.order from the contemporary
asked by Rachel 
psychology
a what is reinforcement is one that satisfies a biologial need
asked by alisha s. 
PROJECT please help
INTRODUCTION Imagine yourself seven years from now. You are approximately 22 years old, and are looking to start a career after you have taken the previous four years for postsecondary education, travel, and some work. You are moving out of your parents
asked by Anonymous 
psychology
in an instance of what recovery a conditioned response that has be extinguished reappears when a person is exposed to a related stimulus
asked by alisha s. 
psychology
a common repetitive technique for oving new information from shortterm memory to longterm memory is called
asked by alisha s. 
chemistry
what effect would each of the errors decribed below have on the concentration of potassium hydrogen phthalate... 1) so of the solids potassium hydrogen phthalate will spilled when transfering into the beaker... 2) not enough water was added to bring the
asked by peter 
chemistry
how many grams of lithium sulfate will be formed when 25 grams of sulfuric acid react with an excess of lithium hydroxide in the following reaction
asked by mary 
finance
If you expect the inflation premium to be 2%, the default risk premium to be 1%, and the real interest rate to be 4%, then what interest rate would you expect to observe in the marketplace on shortTerm Treasury Securities?
asked by dominic 
algebra
You are standing 14 feet from the edge of a cylindrical water tank and 26 feet from a point of tangency. The tank is 10 feet tall. What is the volume of the tank in cubic feet?
asked by Sarah 
math
what is the length of side AB in triangle ABC with AB=AC, BC=8, and median CD=9
asked by skd 
SCIENCE
What are the products of a chemical reaction involving NaCl, HNO3, and AgNO3?
asked by Neil 
Physics
In a city with an airpollution problem, a bus has no combustion engine. It runs on energy drawn from a large, rapidly rotating flywheel under the floor of the bus. The flywheel is spun up to its maximum rotation rate of 5150 rev/min by an electric motor
asked by Brent 
Chemistry
Approximately how much water should be added to 10.0 mL of 12.0 M HCl so that it has the same pH as .90 M acetic acid(Ka= 1.8 x 10^5)?
asked by Sue 
science
The projectile is fired at an angle of 45 degree to the horizontal with an initial speed of 100 feet per second. Show work.
asked by kasey kim 
Calculus (Please Check my answers)
Find the average value of the function i=15(1e to the power of 1/2 t) from t=0 and t=4? A.7.5(1+e^2)
asked by anon 
chemistry
A classic experiment in equilibrium studies dating from 1862 involved the reaction in solution of ethanol and acetic acid to produce ethyl acetate and water. The reaction can be followed by analyzing the equilibrium mixture for its acetic acid content. In
asked by gs 
Calculus (please check my answer)
Find the Avrage value of the function i=15(1e to the power of 1/2 t) from t=0 and t=4? A.7.5 sqrt 1+4e^2 e^4
asked by anon 
physics
i need 1 question each of this following straight ine motion, free falling body, projectile in the dimension and projectile in two dimension... i need it badly.. our prof need a good example of I
asked by matt carlo 
Physics
A weight of 4.33 N is suspended by the string fasten at its upper end. A horizontal force is applied to the weight so that the string makes an angle of 30 degrees with the vertical. Find the horizontal force and the tension in the spring.
asked by Muazzif 
Managerial Economics
George, the owner of a car wash is trying to decide on the number of people to employ based on the following short–run production function: Q = 6L – 0.5L2 Where Q = number of car washes per hour and L = number of workers. a) Generate a schedule showing
asked by Soanz 
precalc
Find the vector v with the given magnitude and the same direction as u. v=7, u=3i+4j
asked by Christine 
Stats
if 5% of all calculators are defective, find the mean, variance, and standard deviation of a lot of 400 calculators. round your final answer to two decimal places if necessary.
asked by Megan 
science
If a temperature increase from 19.0 degrees C to 36.0 degrees C triples the rate constant for a reaction, what is the value of the activation barrier for the reaction?
asked by kristen 
Multiplying and Dividing Rational Expressions
solve 81x9/y4* x2/36x5y
asked by jazmine 
physics
A car travels between the 100 meter and 250 meter highway markers in 10 second. The average speed of the car during this interval is...
asked by Sarah 
math
convert to a mixed number 20/9
asked by alexus 
English
I realized I left out a paragraph for you to check. Thank you. In particular, can you say a bike shop, enthusiastic about? 1) Johnny has got a headache and he can’t train. Storm is training for the triathlon alone. 2) Her times are fast but she finds
asked by Mike 
Chemistry
At 20 C (approximately room temperature) the average velocity of N2 molecules in air is 1050 mph. What is the velocity of a molecule of N2? What is the kinetic energy of a N2 molecule with this velocity? What is the kinetic energy of a mole of N2? I know
asked by melinda 
math
a woman wants to construct a box whose base length is twice the base width. The material to build the top and bottom is $ 9/m ( squared) and the material to build the sides is $6m/ ( squared). If the woman wants the box to have a volume of 70 m cubed,
asked by Tomas 
Math
1st grade math worksheet says Write some names for 12, what does this mean?
asked by Susan 
chemistry
What are the products of a reaction between NaCl, HNO3, and AgNO3?
asked by Neil 
Physics
In a "worstcase" design scenario, a 2000{\rm kg} elevator with broken cables is falling at 4.00 {\rm m/s} when it first contacts a cushioning spring at the bottom of the shaft. The spring is supposed to stop the elevator, compressing 2.00 {\rm m} as it
asked by Trevor 
psychology
during the what phase of a problem solving, meansends analysis is a very common heuristc.
asked by alisha s. 
physics
Suppose you notice 6.3 ocean waves pass by a buoy in 26.3 seconds. What is the frequency of the ocean waves?
asked by mark 
Algebra
in 1995 life expectancy was 66.7 yrs, in 2002 it was 70. yrs. E represent the life expectancy and t represents the number of years since 1995(t)= _t + _ E(11)=
asked by bianca, pleeease help i'm lost 
math
Kate drove from Amesville to Barstow at an average speed of 60 km per hour. Tyler drove the same route at an average speed of 80 km per hour. 1. If the distance from Amesville to Barstow is 40 km, how much less time did it take Tyler to make this trip than
asked by randie 
math
Ben can complete 3 math problems in 21 minutes. If he continues working at the same rate, how long will it take Ben to complete 16 math problems? thanks .
asked by Imani 
precalc
How do I calculate the number of images in a particular iteration for a transformation?
asked by Carly 
Math
The combinated permeter of a circle and a squar is 16 find the dimensions of the circle and the square that produces a minimum total area?
asked by Mgj 
algebra
Tammy bought 16 cookies for a party. She had 6 cookies decorated at an extra cost of 25 cents each. If the total cost of the cookies was $9.50, how much did each plain cookie cost?
asked by Katie 
geometry
The diagonals of a rhombus are in 2:1. If the perimeter of the rhombus is 120cm, find the length of the diagonals.
asked by Jen 
Further maths
Under differential calculus using the product rule find the derivative of (2x+3)^3(4x^21)^2
asked by Stanley dominic 
Computer Science
The digits 0, 1, and 8 look much the same if rotated 180 degrees on the page (turned upside down). Also, the digit 6 looks much like a 9, and vice versa, when rotated 180 degrees on the page. A multidigit number may also look like itself when rotated on
asked by Anonymous 
Geometry
If the diagonal of a square has a length of 10 suare root of 2 cm, find the area of the square and the perimeter of the square.
asked by Jen 
chemistry.
in the titration between Na2CO3 and HCl... 1) at the first end point what reaction is stoiciometrically complete? 2)At the start of titration where HCl=0 is the solution acidic or basic. ExPlain? 3) At the 2nd end point what reaction is stiociometrically
asked by zoe 
math
what is the nearest tenth of a centim eter in 4 inches
asked by Jimmy 
Math
I have more than 9 but less than 16 marbles. There are half as many red as blue. There are two more green than blue. There is an odd number of yellow. What do I have
asked by Larry 
chemistry
4 Fe(s) + 3 O2(g) 2 Fe2O3(s) ΔH = 1652 kJ How much heat is released when 3.82 mol iron is reacted with excess O2?
asked by suzy 
Math
Sam walked 15 ft. up a ramp and discovered he was 9 ft. above the ground. Pam walked an additional 20 ft. up the ramp. How far above the ground is she
asked by Lane 
math
You have just received advertisements from 2 companies in your area: Greener Lawns and Lawns for Less. Greener Lawns charges an initial fee of $200, plus $50 per hour for labor costs. Lawns for Less charge an initial fee of $300, plus $25 per hour for
asked by tammy 
math
system of equations can result in 3 possibilities: consistent, inconsistent, and dependent. Discuss each of these types of solution that can be generated, and describe the graph of each possibility.
asked by tammy 
CHEMISTRY
how much energy would be released in the following reaction CH4 + 2O2> CO2 + 2H2O
asked by Anonymous 
Algebra2
Operations with fractions...3/5+4/5
asked by Keyshawn 
etymology
how did wrigley come up the orbit. not the actually product but i need to know the orgin of the product name orbit. thanks:)
asked by Abby 
Math
Solve for x: 2x + 12 ≥ 18
asked by Kathlen 
accounting
When Collum Corporation was organized in January 2011, it immediately issued 10,000 shares of $60 par, 5 percent, cumulative preferred stock and 20,000 shares of $10 par common stock. The company's earnings history is as follows: 2011, net loss of $15,000;
asked by Lauren 
Math
One summer, Jared earned $26 each time he mowed the lawn. He mowed the lawn a total of 13 times that summer. He had to fix his lawn mower one time during the summer, which cost him $32.42. Which number sentence could be used to find M, Jared's profit for
asked by Thomas 
math
You have just graduated from college and landed your first big job. You have always dreamed of being a homeowner, and after carefully shopping for your dream home, you find one that you would like to purchase at a cost of $250,000. After researching banks
asked by tammy l 
calculus
Find the extreme values of the function for the given intervals. 2x^3 – 21x^2 + 72x a) [0,5] b) [0,4] I have both the minimum values for both intervals which is 0. But I am unable to find the maximum. please help!!!
asked by Abdullah 
Physics
A block slides down an incline. As it moves from point A to point B, which are 5.0 m apart, a force F acts on the block, with magnitude 2.1 N and directed down the incline. The magnitude of the frictional force acting on the block is 10 N. If the kinetic
asked by John 
Statistics
Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Find the probability of exactly eight in ten births.
asked by chalulu 
marketing
Name 3 things a marketing department of a firm does?
asked by Lewis 
Etymology
I am doing a project on Fascinating Etymology Stories and was wondering if you guys know of any good websites with interesting stories of the origin of words, preferrably not words that came from a persons name. Thanks:)
asked by Abby 
physics
A pion has rest energy 135MeV. It decays into two gamma rays that travel at the speed of light. A pion moving through the lab frame at v=0.98c decays into two gamma rays of equal energies, making equal angles θ with the direction of motion. Find the angle
asked by mike 
English
Can you please check if everything is correct now? I made the chages you told me. I have one more doubt in n. 3: Can I used "bored with" instead of bored by? 1)She was really upset about her uncle’s death. 2)She was embarrassed about the way her father
asked by Mike 
math
Find the following product: (y10)^2
asked by Jackster 
Economics
a. If the face value of a coin exceeds the cost of coinage, the resulting revenue to the issuer of the coin is known as
asked by Anonymous 
Calculus
A spherical balloon a has a diameter 2 m when it is 1500m high . It is observed that the diameter increases at a constant rate of 4cm/min as it continues to rise. At what rate is the volume increasing when the diameter is 4m . At what rate is the surface
asked by Mehak 
Further maths
(2x+3)^3(4x1)^2
asked by Stanley dominic 
algebra
In a local election, 53,400 people voted. This was a decrease of 7% over the last election. How many people voted in the last election? Round to the nearest whole person.
asked by Anonymous 
English
Can you please check this paragraph I summarized myself from an internet site called euronews. I think it can be useful to revise passive tenses and, of course, to keep up to date with what happens in Japan. 1.A 10meter tsunami slammed into the Japanese
asked by Mike 
civil enginerring
air having a pressure of 40 psig and a volume of 8 cu ft expands isotermally to a pressure of 10 psig find the external work performed during the expasion
asked by john 
Physics
Derive an expression for the gain Vout/Vin. Express your answer in the form of A+jB. A basic non inverting operational amplifier with a capacitor connected in series with the resistor at the bottom.
asked by John 
Statistics
A test consists of 90 mulitiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers.
asked by chalulu 
chemistry
What is my theoretical yield of iron II chloride if I start with 34 grams of iron II bromide?
asked by Allie 
Math
At what points does the line y+x3=0 intersect the curve 2y=6x+2(x^2)(y^2)?
asked by Paul 
Math
i need help with symbolizing problem situations . similar with that ?
asked by Roman 
statistics
A 99% confidence interval for population variance is being formulated based on a sample of 16 observations. What are appropriate values for X^2
asked by Sandy 
math
6.6+.8x=0.2 what does x equal
asked by mary 
History
Is this true or false. If it is true were can I find the web site to verify the answer. I am having a difficult time interputating what the statement is trying imply. Please could you help me. Thank you. American colonies were born out mass slaughter of
asked by David 
English
Can you check these sentences for me, please? I really need to know if they are possible because I need to meet some American teachers tomorrow. 1)How do you call the teacher who is at the head of the English Department in a high school? 2) She has
asked by Mike 
general chem
How much heat is released whena mass of 125 g with a specific heat of 4.11 J/g C increases from 23.2 C to 34.9 C?
asked by Anonymous 
Math
i have more than 9 but less than 16 marbles. There are half as many red as blue. There are two more green than blue. There is an odd number of yellow. What do I have?
asked by Marylu 
Alg 1
Graph 4x+y>6 5y
asked by Casey 
Socials
Why did the Maritimes not favour Confederation? The only information I know is that they saw themselves as mature, independent colonies. Did they think that the union was not a fair idea or something?
asked by Sara 
Statistics
A survey found that 25% of pet owners had their pets bathed professionally rather than doing it themselves. If 20 pet owners are randomly selected find the probability that between 12 and 7 pet owners, inclusive, have their pets bathed professionally.
asked by Ashley 
math
Use an inequality to solve the problem. Be sure to show the inequality and all of your work. The area of a triangle must be at most 32.5 square inches. The base is 13 inches and the height is x inches. Find the possible values for x.
asked by Anonymous 
math
Use an inequality to solve the problem. Be sure to show the inequality and all of your work. A 12pound puppy is gaining weight at a rate of 2/3 pound per week. How much more time will it take for the puppy’s weight to exceed 37 pounds?
asked by Anonymous 
PHYSICS
1...At what temp. of 0^C steel rod and copper rod have length of 800.1 & 99.9 respectively. At what temp. will the 2 rods have the same length. coeff.of linear expansion Copper.000017 steel.000013 2...The length of a brass bar increase from 4.001 into
asked by EM 
Socials
What three situations changed some Maritimers unwillingness? I cant find this information in my book
asked by Sara 
Physics
2. State whether each of the following would be apt to produce systematic or random errors in these experiments and explain why: (a) the corners of the cylinder are slightly rounded; (b) the end faces of the cylinder are parallel to each other but not
asked by Sean 
stats
if the true proportion of californians who are unemployed is 11%, what is the probability that a sample of 100 californians are unemployed?
asked by stacy 
com1055
may i have two exmple in changinging in your writing
asked by brain 
Socials
Which three men formed the "Great Coalition"? Why? George Brown, John A. Macdonald, and George Etienne Cartier. They formed the "Great Coalition" to save the government of Canada, and to try to unite the colonies. Am I right?
asked by Sara 
Law  understanding terms
I have this worksheet which asks me "historical barriers to achieving equality right" and the other coloumn asks "contemporary barriers to achieving equality rights" What is the difference between them.. is it the historical one is the history in the late
asked by Babelii 
chemistry
how many grams of calcium nitrate are needed to make 100mL of a 0.5M solution
asked by Anonymous 
science
How do you calculate the atomic mass of magnesium? 79% magnesium24, 10% magnesium25, 11% magnesium26
asked by katie 
Socials
What was the purpose of the Charlottetown Conference of 1864? The purpose of the Charlottetown Conference of 1864 was to unite the colonies and form a large colony... Is that right?
asked by Sara 
Chemistry
Ten kilograms of hydrogen gas are mixed with 355 kg of chlorine in a 0.50 mm^3 drum. The two gases react to produce hydrogen chloride. What is the final pressure in the drum if the final temperature is 60 degrees celcius?
asked by Maria 
com/155
Each of the following sentences has one grammatical error. The errors are in one of the following four categories: subject–verb agreement, runon sentence, verb form and tense, or sentence fragment. Identify which of the four errors, if any, is present
asked by Anonymous 
chemistry
when we are synthesis nbutyl bromide what impurities we can expect in the crude product?and how would these impurities react with concentrated sulfuric acid?and also how we can make tbutyl bromide?
asked by sashika 
chemistry
Explain how strong acid solutions conduct an electric current.
asked by Nissa 
Calculus(answer needed immediatly,thanks)
A paper cup has the shape of a cone with height 8cm and radius 3cm at the top. Water is being poured into the cup at the rate of 2cm3/s. How fast is the water level rising when the water is 6cm deep?
asked by Mehak 
Calculus
A boat is pulled into a dock by a rope attached to the bow of the boat an passing through the pulley on the deck that is 1m high than the bow of the boat ,if the rope is pulled im at the rate of 0.8m/s how fast does the boat approach the deck when it is
asked by Mehak 
Calculus
A boat is pulled into a dock by a rope attached to the bow of the boat an passing through the pulley on the deck that is 1m high than the bow of the boat ,if the rope is pulled im at the rate of 0.8m/s how fast does the boat approach the deck when it is
asked by Mehak 
Calculus
Evaluate (integer sign)dx/sqrt98xx^2 A.sin^1 (x + 4/5) + C B.sin^1 (x  4/5) + C C.Ln Sqrt98xx^2 + C D.Ln (8  2x) + C B or C ?
asked by anon 
physics
3. What is the magnitude of the electric field strength E such that an electron, when placed in the field, would experience an electrical force equal to its weight? What electric field strength E is required if the electron is replaced by a proton
asked by lol 
Word problem solving with graph equation
Assignment Part I: A system of equations can result in 3 possibilities: consistent, inconsistent, and dependent. Discuss each of these types of solution that can be generated, and describe the graph of each possibility. Part II: BreakEven Analysis and
asked by Joe 
Physics!!!
A rod of length 1m lies in the lab frame making angle θ=30 with the xaxis. Find the length and the angle it makes with the x’axis as seen by an observer moving at u=0.8c along the ydirection.
asked by Jennifer 
Physics
An observer stands 43.0 m behind a marksmen practicing at a rifle range. The marksman fires the rifle horizontally which gives the speed of the bullet to be 939 m/s. How far does each bullet travel before the observer hears the report of the rifle? Assume
asked by Steph 
Advanced Alg.
I forgot how to look for the asymptote from an equation.. can someone please help me out? example: y= x/(x+1) what's the asymptote in this case? Thanks.
asked by Amanda E. 
Really Physics
A 2.4 Kg object moving to the right at 0.8c collides with a 3.2 kg object moving to left at 0.6c. They stick together. Find the mass and velocity of the resulting combined object by; a) assuming that you have no knowledge of relativistic physics, b) using
asked by Bob 
hcc
find sample variance and standard deviation.8,45,16,50,34,25,32,31,30,27.s^2=
asked by chelsea 
advanced alg.
i meant how do you find the hoizontal and vertical asymptote from an equation?
asked by Amanda E. 
Chemistry
How many moles of nitrogen are in 5.0×10−2 mole of quinine?
asked by Jen 
Access
A database has two tables named Products and Orders. The tables are joined by a column called ProductID. You have created a query named uery1, which combines the data from the tables. If the Products table is deleted, what will happen when users run
asked by Marie 
Calculus (double check my anser please)
Evaluate integral e^3x cosh 2x dx. A.1/2 e^5x + 1/2 e^x + C B.1/10 e^5x + 1/2e^x + C
asked by anon 
business
A business is an institution that exists to serve the need of people for goods and services in a society.Discuss
asked by Davidson 
history
two of most significant social consequences of the Industrial Revolution.
asked by Anonymous 
chemistry
n one experiment, a mixture of 1.000 mol acetic acid and 0.5000 mol ethanol is brought to equilibrium. A sample containing exactly onehundredth of the equilibrium mixture requires 28.80mL 0.1040M Ba(OH)2 for its titration. Calculate the equilibrium
asked by gss 
calculus
Find the area under one arch of a cycloid described by the parametric equations x=3(2theta sin2theta) & y=3(1cos2theta) use 0 and pi for te limiting values of. A.9pi B.18pi C.27pi D.36pi
asked by anon 
Calculus (double check )
Find the centroid of the area bonded by the parabola y =4x^2 and the xaxis? A.(0,1.6)
asked by anon 
English
I forgot to ask you if the sentences I sent you before were gamatically correct. Thank you. In particular the use of "through" in q. 1, "as for" in q. 4. 1) Time is personified through the use of a capital letter in line 9, through the use of verbs
asked by Mike 
Physics
a) A distant spaceship carrying a red headlight, emitting light with wavelength 600 nm, is heading towards the earth. Observers on the earth detect the light from the headlight as ultraviolet light with wavelength 200 nm. What is the velocity of the
asked by Bob 
maths exponential functions
Hi I have a Maths quiz on Monday and i have been of sick for the past week. I received these review questions from my teacher via email and he isn't replying to my questions i really do not get these questions if someone can do these and explain to me how
asked by TroubleInMathedise 
English
These are the very last sentences. I'm unsure whether to use she or her (in sentence 6). Do you say "found out" or found/discovered in sentence 2? Is it possible to turn this sentence into the passive? "She has been doing the washing for two hours". The
asked by Mike 
Maths  check please
Fig.1. Shows a signwave on the its horizontal axis "Time in (ms)" means that time is measured in milliseconds. The time taken is 20 ms in total Question asks for frequency of the sinewave ? Cant really draw Fig.. here :0( But the period is 5 milliseconds,
asked by Oscar 
Physics
3 point 666 point one fifth degree
asked by Anonymous 
economics
Eric borrowed 515 dollars today and has agreed to pay back in equal monthly installments over 6 years. The bank charges Eric 4.94% per year, compounded monthly. What is the amount that Eric will owe the bank at the end of month 20 (that is, after the 20th
asked by Rachel 
Physics
A pion has rest energy 135MeV. It decays into two gamma rays that travel at the speed of light. A pion moving through the lab frame at v=0.98c decays into two gamma rays of equal energies, making equal angles θ with the direction of motion. Find the angle
asked by Pardis 
government
I just need some ideas please. I have to trace a policy example through the 3 models of federalism, dual, cooperative and creative. I have done quite bit of research and am having trouble finding a policy that I will be able to trace through the 3 models
asked by Amy 
astrology of GEO PHYSICS
3 point 666 point one fifth degree
asked by Sandra 
physics
12. If alpha particles are caused to fall through a potential difference of 1500 volts, determine their final speed if they were initially at rest. Alpha particles are Helium nuclei composed of two protons and two neutrons.
asked by ike 
History
We're learning about imperialism, and i have to find the foreign aid recipient $$ of china. I can't find it on the website my teacher gave to us.. Does anyone know it, or know where I could find it?
asked by Nicole 
English
Two very last doubts. Do you say "the Augustan or The Augustans were interested in real life". He admitted it had been him who ate all the cake./He admitted eating all the cake. Are they both correct?
asked by Mike 
History
Since the late 1800's and the 1912 eara how has the progression reform movement effected how things are presently?
asked by David 
Social Studies
What point was Madison making about the system of government created by the proposed U.S. Constitution?
asked by S... 
math
6/5 / 1/5
asked by alexus 
Algebra
(7+2t),(494t^2),(72t) find the LCM
asked by Xaphan 
Chemistry
Calculate the pH of a 25 mL distilled water sample after the addition of 2 mL of HCl Calculate the pH of a 25 mL distilled water sample after the addition of 2 mL of NaOH
asked by Kara 
Science
Explain why the vacuum ball does not separate.
asked by None 
science
What is the density of coconut oil?
asked by Mckey 
physics
A child in a boat throws a 6.00 kg package out horizontally with a speed of 12.0 m/s, Fig. 728. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 25.0 kg and that of the boat is 50.0 kg.
asked by joe 
stats
What are the steps to solve P(x>k)=.025 when the mean is 500, standard deviation is 100
asked by Lillie 
Chemistry
Can dimethylformamide be stored in plastic bottles? Or is it better to store in glass bottles?
asked by jess 
social studies
who/what else got mummified,other than humans? why?
asked by stefi 
HiSTORY ....helpppppp
why is yellow journalism important in the Spanish American war?
asked by ashley  HELP PLEASEE!!! 
physics
A 13 g bullet traveling 235 m/s penetrates a 2.0 kg block of wood and emerges going 171 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges? in m/s
asked by Anup 
Math
What are 5 names for 1/2?
asked by Jennifer 
Calculus
A rectangular prismatic tank has the following dimensions :length is 3 m, width is 2m . And depth is 3m .it is being filled with water and the surface level is rising at 20cm/min.what is the inflow rate of water at the tank ?
asked by Mehak 
Science  Physical
Earth's magnetic field induces some degree of magnetism in most of the iron objects around you. With a compass you can see that cans of food on you pantry shelf have north and south poles. When you pass the compass from their bottoms to their tops, you can
asked by Jessica 
Calculus
A water trough on a farm has an isosceles triangle croos section which is 60 cm across the top and 20m deep.the trough is 3m long . If itbis empty and then filled at a rate of 0.5 m3/min , how fast does the water level rise when the deepest point is 9cm ?
asked by Mehak 
CHEMISTRY
Zinc metal reacts with hydrochloric acid to produce zinc (II) chloride and hydrogen gas. what volume (in mL) of 2.0M HCl is required to dissolve a 10.0g piece of zinc?
asked by Jon 
English 9
I have a question about the short story "Son" by John Updike. Is "Son told in a.order from the contemporary father and his memories and reflections b.reverse chronological order, from past to present c.fragments that are set in different time periods and
asked by Rachel B. 
chemistry
If the solubility of NaCl at 25 degrees Celsius is 36.2 g/100 g H2O, what mass of NaCl can be dissolved in 200.0 g of H2O?
asked by colleezy 
English  Native speakers
Hello! Why don't we say possessive pronouns in English for the following words: my, your, his, her, its, our, your, their. Why do we say possessive adjectives? It doesn't make sense to me since my mother tongue is not English. Can you maybe explain this to
asked by Mark 
math
6.8 in fraction notation
asked by shana 
English
Thank you very much for all your information. I'm finding it difficult to rephrase two sonnets by Shakespeare, especially number 130 "To my Mistress' eyes". 1) The sonnet is Shakespeare's tribute to his uncomely mistress, commonly referred to asthe dark
asked by Mike 
physics
Green light has a wavelength of 4.96 107 m and travels through the air at a speed of 3.00 108 m/s. Calculate the period of green light waves with this wavelength. s What is the frequency? Hz
asked by Anonymous 
CHEMISTRY
Which of the following solutions contain the greatest total ion concentration? a) one mole of potassium chloride dissolved in 1.0L of solution b)one mole of sodium phosphate dissolved in 1.0L of solution c)one mole of ammonium carbonate dissolved in 1.0L
asked by Jon 
chemistry
Calculate the standared enthalpy of formation of solid Mg(OH)2 given the following data: 2Mg(s) + O29(g) →2MgO(s) ∆H = 1203.6kJ Mg(OH)2(s) →MgO(s) + H2O(l) ∆H= +37.1kJ 2H2(g) +O2(g) →2H2O(l) ∆H = 571.7kJ
asked by melinda 
Social
Is government regulation necessary in all aspects of business, why or why not? Are there some policies which make more sense than others?  I know that government regulation isn't always necessary to run a business and some people are capable are able to
asked by Jonathan 
math
How many ways can we select a group of 4 people from a class of 27? Please explain
asked by Mari 
English
I forgot to include the other sonnet (N. 116). I find it hard to rephrase the last couplet. 1)Sonnets 116 is about love in its most ideal form. True love is to be based on mutual trust and understanding. 2) True love doesn’t change when the situation
asked by Mike 
yes
Using your current work organization (or an organization of interest) as the subject matter, research the elements of business and prepare an APA formatted paper that:
asked by dan 
hcs/341
Description of the functional roles of the human resource department
asked by eric 
Economics  anyone have any thoughts on this?
A)Who has more monopoly powerWalMart or the concessionaire who has acquired the franchise to sell beer, hot dogs, colas, candy, etc., at a Washington Redskins football game? Explain. B)Who has more monopsony powerWalMart or teams in the National
asked by Tasha 
AP Spanish
Compare and contrast The Rising by Bruce Springsteen and Thursday from La Oreja de VanGogh.? I know the songs are about the September 11 tragedy in the U.S and the March 11 tragedy in Spain. Include comments and views of the role of each song.
asked by Kelly 
MATH
6.4/84
asked by LISA 
Physics please help!!
A 12.1 g CD with a radius of 6.16 cm rotates with an angular speed of 31.1 rad/s. What is its kinetic energy?
asked by Megan 
Spanish 7th grade
I have a question about how to answer this If something is dulce, one would probably want to drink lemonade or a sour drink with it. I know dulce is sweet in Spanish but I don't get the correlationor is it if you eat something sweet, you want to offset it
asked by Ellie 
MacroEconomics
Testing procedures required by the US Food and Drug Administration raise the cost and price of drugs. Should we eliminate such requirements in order to ease inflationary pressures?
asked by Brendan 
algebra
write a situation that could be modeled by the equation b=100s.
asked by stu 
math
Find the values of c so that the intersection of y=x+6 and y=x/3+c lies strictly in the first quadrant (not on a coordinate axis).
asked by Janice 
Physics
After you pick up a spare, your bowling ball rolls without slipping back toward the ball rack with a linear speed of v = 3.41 m/s To reach the rack, the ball rolls up a ramp that rises through a vertical distance of h = 0.529 m. What is the linear speed of
asked by Megan 
Physics
An electrical motor is designed to operate on 34 V at 1.3 A. How much resistance must be connected in series to this motor, if you wish to plug it in to a 120 V outlet?
asked by Joan 
math
14/51 * 3/4
asked by LISA 
calc
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 16 cm. (Note the answer is a positive number).
asked by Anonymous 
Physics
What current would flow in an ordinary 115 V household circuit, if a 1430 W hair drier and a 1000 W microwave oven were operating simultaneously on this line?How much current would the hair drier and microwave from the previous question draw, if they were
asked by Joan 
Marketing
Clustering techniques applied to segmenting markets?
asked by Anonymous 
Physics please help!!
A 1.94 kg solid sphere (radius = 0.105 m) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.710 m high and 5.17 m long. When the sphere reaches the bottom of the ramp, what is its total kinetic energy?
asked by Megan 
English
Thank you very much for your correction. I need to know which prepositions are possible after certain adjectives of emotions. I hope you can help me. 1)disgusted at/by/with (I need to provide examples). I was disgusted at/about/ by (?) the news of the
asked by Mike 
math
30  19 1/3
asked by ashley 
Chemistry
The density of water at 17 degrees celcius is 0.998774g/mL and at 18 degrees celcius it is 0.998595 g/mL. Calculate the density of water at 17.7 degrees celcius?
asked by Renee 
chemistry
when 12.5mL of 0.28M HNO3 and 5.0mL OF 0.46M Ba(OH)2 are mixed, is the resulting solution acidic, basic, or neutral?
asked by Jon 
political science
Please help Thank you Examining and criticizing the policies and proposals of the majority party is a function of ? The majority party Foreign governments The minority party Government bureaucrats The judicial branch The power an interest group exerts is
asked by Alex 
econ
A bumper crop of farm products causes: 1) only a slight decline in the price of farm products because the demand for farm products is income inelastic. 2) a large decline in the price of farm products because the demand for farm products is price
asked by Jeff 
history
do the usa and china leaders cooperate to solve problems such as finance, trade,tyrants, and/or military actions?
asked by mary 
Physics
A 5.1 kg block slides down an inclined plane that makes an angle of 26 degrees with the horizontal. Starting from rest, the block slides a distance of 2.9 m in 4.6 s. The acceleration of gravity is 9.81 m/s2 . Find the coefficient of kinetic friction
asked by Jackson 
pre calc
Find the critical number of the function. g(t) =  6t  9  t =
asked by alison 
statistics
In a random sample of 400 electrical components,100 are found to be defective.if the hypothesis is that 20% of the components are defective,what is the standard error of the sample proportion
asked by sharon 
CHEMISTRY
Zinc metal reacts with hydrochloric acid to produce zinc (II) chloride and hydrogen gas. what volume (in mL) of 2.0M HCl is required to dissolve a 10.0g piece of zinc?
asked by Jon 
Chemistry
How many moles of NaOH are present in 30.1 mL of 0.140 M NaOH?
asked by Eric 
English
I forgot to include the following statements. I hope you can have a look at them, too 1) embarrassed about/at (are the prepositions intercheangable?) I was embarrassed about how untidy my room was/at (about?) having to ask for money/ to ask for money. 2)I
asked by Mike 
tina
402q+.03q^2=40q.01q^2 .04q=1 q=25 this is what i keep getting but I am suppose to be getting 50 what am I doing wrong?
asked by econ 
math
i had 16 1/2 apples i gave my cousin 2 apples what is the fraction of apples did i give my brother
asked by denise 
English
1. Wilma was able to walk again at age twelve. 2. Wilma was able to walk again at the age of twelve. 3. Wilma was able to walk again at twelve. 4. Wilma was able to walk again aged twelve. (Which ones are correct? Could we use other expressions?)
asked by rfvv 
English
1. What injection does a person at 16 years need to receive? 2. What injection does a person at 16 need to receive? 3. What injection does a person at 16 years old need to receive? 4. What injection does a person aged 16 need to receive? 5. What injection
asked by rfvv 
Math
What is the simple interest due on a sixmonth loan of $3250 if the interest rate is 7.75%
asked by Bobbi 
chemistry
at one atmosphere pure water ice melts at 0.0 C. at 12 atm the melting point is 0.085 C. The density of water is 1g.cm^3 at 0 C, while that of ice is 0.917 g/cm^3. From this information, estimate entropy of melting.
asked by john 
math
To purchase your first home, you may be required to borrow funds from a bank. You have just graduated from college, and your dream is to own your first home. Before you begin looking for your dream home, you need to learn more about funding options and the
asked by tammy lo 
physics 11 grade
A hiker shouts toward a vertical cliff 789.5m away. The echo is heard 2.1s later. The wavelength of the sound is 12.3 m. What is the speed of the shout? What is the frequency? What is the period of the wave?
asked by Parker 
statistics
You are randomly selecting 10 college students for an experiment. The population in which you are sampling has 78% of the students classified as Caucasian and 22% classified as Minority. What is the probability that all 10 students selected will be
asked by john 
math
What are the first and third quartiles of the box and whisker plot above? 0 15 110 225
asked by andrew 
physics
A group of swimmers is resting in the sun on an off shore raft. They estimate that 1.1m separates a trough and an adjacent crest of surface waves on the lake. In addition, they count 23 crests that pass by the raft in 15.7seconds. What is the frequency of
asked by suzanne 
English
Can you please tell me if the tense choice is correct in this paragraph? Tahnk you. Two verbs in brackets. 1) Time is personified through the use of a capital letter in line 9, through the use of verbs referring to human action (line 10: beding, come) and
asked by Mike