Questions Asked on
November 11, 2011

chemistry
A buffer is made by dissolving H3PO4 and NaH2PO4 in water. a. write an equation that shows how this buffer neutralizes a small amount of acids. b. write an equation that shows how this buffer neutr?
asked by marcy 
Chemistry
For the reaction Ag2S 2Ag + S2 what happens to the equilibrium position if aqueous ammonium sulfide is added A. Shift left B. Shifts right C. Does nothing D. Doubles E. Halves
asked by Monique 
Chemistry
The halflife for beta decay of strontium90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium90. How many years would pass before the strontium90 concentration would drop to 1.0 ppm?
asked by Mindy 
Chem
what is the Net Ionic equation for: 1. MgCl2+NaOH> 2. MgSO4+Sr(NO3)2>
asked by Hunter 
Physics help!!
A crate is pulled to the right with a force of 80 N, to the left with a force of 125.8 N, upward with a force of 615.4 N, and downward with a force of 248 N. Net external force in the x direction: 45.8 Net external force in the y direction: 367.4 N how do
asked by Elle 
statistics
Suppose that the height of male students at a large university is normally distributed with a mean of 69 inches and a standard deviation of 3.0 inches. If 16 samples consisting of 25 students each are obtained, what is the probability that the mean of
asked by Agnes 
Math
Ed long promised to pay is son $400 semiannually for 12 years. Assume Ed can invest his money at 6 % in an ordinary annuity. How much must Ed invest today to pay his son $400 semiannually for 12 years?
asked by Anonymous 
calculus
Suppose that 404 ft of fencing are used to enclose a corral in the shape of a rectangle with a semicircle whose diameter is a side of the rectangle. Find the dimensions of the corral with maximum area. x=........ft Y=......ft
asked by saud 
Chemistry
a diver exhales a bubble with a volume of 250mL at a pressure of 2.4atm and a temp. of 15*C. How many gas particles are in this bubble?
asked by Mindy 
Chemistry
Identify the equation for which Keq= [Cu+]2[S2]
asked by Monique 
Math
Alice Longtree has decided to invest $400 quarterly for 4 years in an ordinary annuity at 8 %. As her financial adviser, calculate for Alice the total cash value of the annuity at the end of year 4.
asked by Anonymous 
Math
Jeff Associates borrowed $30,000. The company plans to set up a sinking fund that will repay the loan at the end of 8 years. Assume a 12 % interest rate compounded semiannually. What must Jeff pay into the fund each period of time?
asked by Anonymous 
chemistry
Titration of 25.00 mL of KOH required 200.00 mL of 0.0050 M acetic acid, CH3COOH. What is the molarity (M) of the KOH solution? Please show calcutions.
asked by Toya 
socials
Compare Canadians' reaction to the announcement of World War I with that of World War II. Why did many people volunteer? Well this what my friend said. The World War I announcement shattered Canadian's hearts, they were not willing to help with the war
asked by Mohammad 
physics
Q A man throws a ball weighing 500g vertically upwards witha speed of 10m/s. 1) what will be its initial momentum? 2) What would be its momentum at the highest point of his flight?
asked by asd 
Physics
A constant torque of 27.2 N · m is applied to a grindstone for which the moment of inertia is 0.158 kg · m2. Find the angular speed after the grindstone has made 18 rev. Assume the grindstone starts from rest. Answer in units of rad/s
asked by Leah 
physics
A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 408 N walk on the overhanging part of the plank before
asked by meagan 
Physics
A metal sphere has a charge of +12C. What is the net charge after 2.1 x 1013 electrons have been placed on it?
asked by Krist 
Physics
A cheetah starting form rest can reach a maximum speed of 28m.s in 2s and it can maintain this maxium speed for 15s after this it must rest. suppose an antelope and a cheetah initially at rest are separated by a displcament of magnitude 100m.The antelope
asked by Sivashen 
Math
What is the greatest odd number that uses digits 3, 4, 5 once each?
asked by Jeff 
chemistry
I need help calculating [H3O] from pH and the pOH scale using my calculator. I have a TI30XIIS
asked by Monique 
physics
The drawing shows a person (weight W = 580 N, L1 = 0.849 m, L2 = 0.410 m) doing pushups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.
asked by chelsea 
chemistry
calculate the hydronium ion concentration in 0.125M formic acid, HCHO2 Ka= 1.8 x 104 can you show me the steps pls
asked by Monique 
chemistry
calculate the pH of a buffer solution containing 0.200M acetic acid, HC2H3O2, plus 0.150M sodium acetate. The dissociation constant for HC2H3O2 is 1.76 x 105 I don't think our instructor gave enough notes on these things Im kind of winging it from the
asked by Monique 
6th grade science
which soil conservation technique did George Washington Carver urge farmers to use??? 1) crop rotation 2) cover crops 3) contour plowing 4) notill farming
asked by Kate 
statistics
On average, 30minute television sitcoms have 22 minutes of programming.If a probability distribution for minutes of programming can be approximated by a uniform distribution from 18 minutes to 26 minutes. What is the probability a sitcom will have 25 or
asked by Michelle 
calculus
the lemniscate revolves about a tangent at the pole find sufaces of the solid generated?
asked by saif 
Chemistry
If you have 290.0 mL of water at 25.00 °C and add 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.
asked by Harley 
Chemistry
If a system has 2.50 × 102 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its surroundings, what is the change in internal energy of the system?
asked by Harley 
physics
Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who
asked by meagan 
statistics
On average, 30minute television sitcoms have 22 minutes of programming.If a probability distribution for minutes of programming can be approximated by a uniform distribution from 18 minutes to 26 minutes. What is the probability a sitcom will have 25 or
asked by Michelle 
precalculus
solve the logarithmic equation . express solution in exact form log5(x9)+log5(x+4)=1+log5(x5)
asked by mz deedee 
Chemistry
The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.25 pounds of propane (fuel value is 11.09 kcal/g) is used to heat 123.0 kg of water at an initial
asked by Harley 
physics
A 86 kg clock initially at rest on a horizontal floor requires a 649 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 517 N keeps it moving with a constant velocity. (a) Find μs between the clock and the floor.
asked by mary 
statistics
A nationwide study indicated that 27% of adults said that chocolate was their favorite ice cream flavor. A simple random sample of 150 adults is obtained. A.) Describe the sampling distribtuion of p, the sample proportion of adults whose favorite ice cream
asked by Megan 
physics
The drawing shows a person (weight W = 580 N, L1 = 0.849 m, L2 = 0.410 m) doing pushups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.
asked by chelsea 
physics
Juggles the clown stands on one end of a teetertotter at rest on the ground. Bangles the clown jumps off a platform 2.7 m above the ground and lands on the other end of the teetertotter, launching Juggles into the air. Juggles rises to a height of 3.8 m
asked by Ghazlan 
physics
The drawing shows a person (weight W = 580 N, L1 = 0.849 m, L2 = 0.410 m) doing pushups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.
asked by chelsea 
statistics
2. Punkey Electronics, a small manufacturer of electronic research equipment, has approximately 7,000 items in its inventory. They just hired Joe Detail to manage the inventory. Joe has determined that 10% of the items in inventory are A items, 35% are B
asked by cheryl 
statistics
Suppose that there are 10 million workers in Canada and South Korea and each worker in Canada and South Korea can produce 4 cars per year. A Canadian worker can produce 10 tonnes of grain a year, whereas a South Korean worker can produce 5 tonnes of grain
asked by cheryl 
trig/math
If A is between 270degrees and 360degrees, and cos A=12/13, find the exact value of: sin2a, cos2a, sin1/2a, cos1/2a
asked by Bob 
Math
A star is 300 light years away from Earth. If the speed of light is 3 X 10^5 km/s, calculate the distance the star is from Earth. Give your answer in kilometers and written if standard form.
asked by Shobhi 
MATH
Answer the following: (A) Find the binomial probability P(x = 4), where n = 12 and p = 0.30. (B) Set up, without solving, the binomial probability P(x is at most 4) using probability notation. (C) How would you find the normal approximation to the binomial
asked by Jennifer 
physics
If you push the outer edge of a 1.05mwide door with a 23.0N tangential force, what torque results? What is the torque if you apply the same magnitude of force, in the same place, but at a 45 degree angle?
asked by Jared 
calculus
This is problem 16 Section 4.6 page 246. A closed box with square base is to be built to house an ant colony. The bottom of the box and all four sides are to be made of material costing dollar/sq ft, and the top is to be constructed of glass costing
asked by calculus 
proof read and make corrections
Public schools vs. Private schools Private and public schools education differs in many ways, there are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better
asked by ME 
Physics
A student places her 330 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 9.90 cm, then releases the book
asked by Luts 
English
Base all answers on this passage They Flee from Me Sir Thomas Wyatt They flee from me, that sometime did me seek With naked foot stalking in my chamber. I have seen them gentle, tame, and meek That are now wild, and do not remember That sometime they put
asked by Anonymous 
10th geometry
what is the common ratio of FDE to CAB?
asked by Anonymous 
physics
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 59 cm and is wrapped around the top at a place where its radius is 1.9 cm. The thickness of the string is
asked by meagan 
math
Base of a triangle is 12 inches longer than twice the length of altitude x. Write polynomial area of triangle.
asked by Alice 
calculus
A box is constructed out of two different types of metal. The metal for the top and bottom, which are both square, costs $4 per square foot and the metal for the sides costs $4 per square foot. Find the dimensions that minimize cost if the box has a volume
asked by saud 
precalculus
analyzethe graph of the function Find the x and yintercepts. (b) Determine the end behavior: find the power function that the graph of f resembles for large values of x. (c) Find the maximum number of turning points. (d) Graph the function Please show
asked by kawn 
statistics
On average, 30minute television sitcoms have 22 minutes of programming.If a probability distribution for minutes of programming can be approximated by a uniform distribution from 18 minutes to 26 minutes. What is the probability a sitcom will have 25 or
asked by Michelle 
PROBABILITY MATH
Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let A= event a diamond is selected B=event a club is selected Determine P(A(not B)) DrBob said it is 1/3 but how did he get it? I keep getting answer 1 or 21/26
asked by HM 
Chemistry
Calculate the pH buffer made by combing 50.0 mL of 1.00M ammonia and 50.0mL of ammonium nitrate. Can I use the same formula? If so do I do anything with the mL
asked by Monique 
physics
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a
asked by meagan 
Chemistry
What is the concentration of the Mg2 ion in solution when [CO32] = 0.25M given that the Ksp= 6.82 x 106 for the following reaction MgCO3>Mg +. CO32
asked by Monique 
Spanish 9th grade
Are these correct the way I answered them? 1.Cuál es tu deporte favorito? Mi deporte favorito es el béisbol. 2. Para ti, ¿el tenis es más interesante o menos interesante que el fútbol? Para mi, el tenis es menos interesante que el fútbol. 3. Para ti,
asked by Trish 
chemistry
what is the pH of a solution that has a H+ concentration equal to 1.76 x 105M? I got 4.75 is this correct
asked by Monique 
Chemistry
What happens to the equilibrium constant when a catalyst is added to the reaction mixture. A. Increase B. Decrease C. Does not change D. Varies E. None of the above I chose c
asked by Monique 
CHEMISTRY
Which is NOT a solution? 1 metal alloys, 2 ice in water, 3 sugar in water, 4 vinegar in water.......the answer is ice in water correct?
asked by Mindy 
6th grade science
Mechanical weathering occurs at a greater rate in climates that are 1) cold and wet 2) warm and wet 3) hot and dry 4) cold and dry
asked by Kate 
chem
Suppose that the microwave radiation has a wavelength of 10.8cm . How many photons are required to heat 295ml of coffee from 25.0 C to 62.0 C? Assume that the coffee has the same density, 0.997g/ml , and specific heat capacity, 4.184J/(gk) , as water over
asked by Anna 
MATH
An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula. The researchers use videotape to count how many cockroaches are still alive, and how many appear to be in distress, at 10 second
asked by Jennifer 
Science
My question is, What was the function of a capacitor in an electric current? Could someone please help me I ruled out one of my theorys already and that was to increase circuit power. Was it to allow current flow between its plates? Was it to measure the
asked by schoolfreak 
Help Physics
How much work did the movers do (horizontally) pushing a 130kg crate 10.1 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50?
asked by Lilly 
Statistics
For all of the following use the five step process to solve the problem in the question, that is, state the null hypothesis, the alternative hypothesis, the level of significance and the type of test (ztest, ttest, pvalue, confidence limit and whether
asked by Kristi 
7th Grade English
Ok I need help writing my intro. for my essay for the first sentence Im writing whats diversity means but what else should I right ?
asked by Laruen 
solution
Mr. Hammad is a salaried person and thinking to save for the education of his daughter. In this concern he is considering two diverse saving plans for ten years. First plan requires a deposit of Rs 5,000 every six months with annual interest rate of
asked by Anonymous 
English
Can someone let me know if these answers are right? Thanks in advance! Questions 17 all have the same format and answer choices. The answer choices are fully explained here, but they are in shortened versions in the remaining questions. Although you do
asked by Anonymous 
Physics
In a series circuit, a generator (1400 Hz, 12.0 V) is connected to a 15.0 resistor, a 3.80μF capacitor, and a 5.70mH inductor. Find the voltages across (a) the resistor, (b) the capacitor, and (c) the inductor.
asked by Kelli 
stats
The Quality Assurance Department selected a sample of 12 printed circuit boards and tested them. The number of defects in each circuit board was 3, 3, 0, 5, 1, 1, 5, 6, 6, 2, 0, and 1. What kind of control chart should be constructed to monitor the
asked by Tim 
History of America
Write AT LEAST a paragraph describing NATO in more detail. Include:  What it is  When and why it was created  Some of the key members  What you think some of the key treaty provisions are  Some of the organization's achievements The only thing I need
asked by anonymous 
chemistry
how many mL of 0.15 M NaOH solution are required to neutralize 35.00 mL of 0.22 M HCl
asked by sonya 
Physics
A boy walk 1km due north.what is his displacement?
asked by Okereke 
psychology
A massage therapist stimulates the body, which in turn stimulates the: a. parietal lobe b. temporal lobe c. pituitary gland d. prefrontal cortex
asked by bj 
math
Five years ago, you bought a house for $171,000. You had a down payment of $35,000, which meant you took out a loan for $136,000. Your interest rate was $5.6% fixed. You would like to pay more on your loan. You check your bank statement and find the
asked by Gretta 
English
What is the meaning of this stanza? Money maketh festival, Wine she buys, and beds can strow; Round the necks of captains tall, Money wins them chains to throw, Marches soldiers to and fro, Gaineth ladies with sweet eyes: These alone can ne'er bestow
asked by Alexis 
geometry
Find the lengths of the sides of the triangle with dimensions 2x, 2x3, 15
asked by Donna 
MATH
(A) Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: zip codes for the state of Pennsylvania (B) Determine if this data is qualitative or quantitative: Nationality
asked by Jennifer 
english
what three words create assonance in the stanza One day a girl went walking and stepped into a store she bought a pound of sausages then set them on the floor.
asked by tracy 
probability qn urgently need help
A group of 5 boys and 4 girls take part in a study on the type of plants found in a reserved forest area. Each day, two pupils are chosen at random to write a report. a) Calculate the probability that both pupils chosen to write the report on the first day
asked by joi 
Chemistry
a cylinder of helium has a volume of 8.0 L. The pressure of the gas is 388 lb in 2 at 25*C. What volume will the helium occupy at a standard atmospheric pressure (14.7 lb in 2) assuming there is no temperature change?
asked by Mindy 
ExcelExponential Fits
Hey Im trying to plot this set of data: 0 0 10 0.6 20 1.01 30 1.428 40 2 50 2.3 60 2.57 70 2.8 80 3.05 90 3.35 100 3.54 110 3.73 120 3.9 130 4.08 140 4.25 150 4.39 160 4.53 170 4.65 180 4.754 190 4.846 200 4.943 210 5.011 220 5.111 230 5.175 240 5.23 250
asked by Tom 
trig
determine the phase shift of y = sin(3x  2pi). indicate whether the shift is to the right or left.
asked by clarence 
algebra
The area of a rectangular swimming pool is given by 4x^2+19x+12ft^2.One side length of the pool is given by 4x + 3 feet. What is an algebraic expression for the other side length of the pool?
asked by bridgerunner 
proofreading English
Public schools vs. Private schools Private and public schools education differs in several ways. There are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better
asked by Me 
Chemistry
There is a balloon filled with methane,CH4. If the mass of the methane is 68.34g, what is the volume of the balloon at 0.805 atm and a temperature of 10*C?
asked by Mindy 
Physics
A record has an angular speed of 47 rev/min. Through what angle does it rotate in 1.07 s? Answer in units of ra
asked by Tom 
precalculus
Find the inverse of the function below. Graph the function below and the inverse function. Determine the domain, range, and asymptotes of the function below and the inverse function. Please show all of your work. and graph. f(x)=e^x/2+4
asked by tonia 
Chemistry
What gas involved during the reaction between zinc and hydrochloric acid? I know it's hydrogen, but why?
asked by Danielle 
statistics
Suppose a population distribution of SAT scores has population mean 500 and population standard deviation 100. What is the mean of the sampling distribution of sample means, ybar , calculated from samples of size n = 36
asked by Emmily 
SBS assignment
Hi, I have an assignment due next week and I found an article on 9/11 and its psychological impact. If any of the tutors can Google, "9/11 had psychological impact Beaver County Times", that would be great. I need to define the types of psychology that the
asked by Alex L. 
precalculus
For the given functions f ,g , and h , find fogoh and state the exact domain of fogoh . Please show all of your work. f(x)=e^x g(x)=sqrt x h(x)=2x^2+3x35
asked by tonia 
Chemistry
For the reaction 2 N2O O2 + 2 N2 what happens to the equilibrium position if the pressure is increased
asked by Monique 
chemistry
What is the ÄH°vap of a liquid that has a vapor pressure of 641 torr at 81.7°C and a boiling point of 91.1°C at 1 atm?
asked by Celeste 
Spanish
I am trying to complete this Paragraph using these 7 words. 1. eres 2. soy 3. aveces 4. deportista 5. segun 6. le gusta 7. se llama. Some of the words can be used twice. Como se llama tu amigo.__________1. Kiko. Que _________2.hacer? Pues,__________3.
asked by Shawn 
Chemistry
What gas involved during the reaction between zinc and hydrochloric acid? I know it's hydrogen, but why?
asked by Danielle 
Intermediate algebra
The current in a typical mississippi river shipping route flows at a rate of 4mph. In order for a barge to travel 24mi upriver and then return in a total of 5hr, aproximately how fast must the barge be able to travel in still water?
asked by pamela 
statistics
A shipping company received an order of 1645 packages. The manager needs to determin the mean weight of the packages. (A) How many randomly selected packages would be need to weight to estimate with a 95% confidence, the mean weight within +/1.5 pounds if
asked by Joe 
math
Four good friends, who love cats, have each named their cat after one of the other friends. Of the clues that follow, only one is true; the others are false. Which friend owns which cat? a.Candy’s cat is named either Dody or Alice. b.Betsy’s cat is
asked by Dell 
Written Analysis
I need help with my project. I have to write 46 paragraphs summarizing three solution ideas on Discrimination. I also have to develop criteria or standard that can be used to evaluate the final solution.
asked by keri 
Psycho Hepl Please
Todd said to his wife, "Honey, you know how we have always wanted to be in business for ourselves? Well, today I did it! I have rented a 3,00 square goot business, hired six employees, ordered office furniture; we are in business." During the first three
asked by Tisha 
math
Five years ago, you bought a house for $171,000. You had a down payment of $35,000, which meant you took out a loan for $136,000. Your interest rate was $5.6% fixed. You would like to pay more on your loan. You check your bank statement and find the
asked by tiana 
MATH
Construct both an ungrouped and a grouped frequency distribution for the data given below: 207 211 204 208 202 203 211 202 205 212 210 212 204 199 204 201 213 200 204 207
asked by Jennifer 
MATH
Assume that the population of heights of male college students is approximately normally distributed with mean of 72.15 inches and standard deviation of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find P (x > 73.25) (B) Find
asked by Jennifer 
college physics
What distance will a 10 hp motor lift a 2000 lb elevator in 30 s? What was the average velocity of this elevator during the lift?
asked by Jessica 
PreVet Research
I just need to be sure that my personal explanation, from hands on research with sharks, of what causes tonic immobility makes sense. What I found is that the only stimuli needed to induce tonic immobility on sharks, rays, and skates is slight compression
asked by Harley 
Socials plese help
I need help with socials homework. Have written parapgraphs below but need help with answers. Tried myself to get them but not certain if I got right. On September 8, Prime Minister King called a special session of Parliament to decide Canada's response.
asked by Mohammad 
socials
paragraph question With the declaration of the war, the Canadian government immediately became much more involved in the planning and and control of the economy. In April 1940, the government established the Department of Munitions and Supplies, and King
asked by Mohammad 
computer
Which type of graphics file format keeps track of each individual point in the image? (Points: 5) Bitmap Detailed image Pointilated Vector is it "Vector"
asked by john 
geometry
PICTURE FRAMING The matting around the picture has a uniform width. How wide is the matting if its area equals the area of the picture? Round to the nearest of an inch.      wide        4in long           
asked by Mitchel 
Chemistry
The pKa of phenol is 10.00, determine the Ka to two significant figures.
asked by ALEX GIROX 
biology
another way to afect the enzyme is lowering the pH of the solution. However, lactase is supposed to be able to work in the stomack. Would lowering the pH of the enzyme solution affect the enzyme? Why or why not?
asked by sara 
geometry
Points P(1, 5) and Q(4, 1) on a coordinate grid represent side PQ of triangle PQR. What is the length of side PQ of the triangle?
asked by Billy 
literature
Compare shakespeare sonnet 130 and edmund sonnet 130
asked by malik jackson 
computer
How does a computer generated animation work? (Points: 5) The computer creates constant movement in the characters. The computer, along with human workers, moves the characters on the screen. The computer creates a set of continuous movements, one
asked by john 
math
50 is what percent of 900 (Round to nearest tenth of a percent
asked by tony 
trig
whatis the possibilities for the square root of 2 times tan theta = 2 sin theta
asked by Anonymous 
social and criminal justice
Hello I have a 2 to 3 page paper due on Monday 11/14, 2011 and I am having trouble finding good reliable information to complete the assignment. The instructions are to: Prepare a paper identifying at least three changes expected in the field of criminal
asked by Dee 
precalculus
solve the inequality express your solution using interval notation x^47x^3+12x^2
asked by mz deedee 
calculus
considering that x is the independent variable in this equation: y + y^3 + 3 = e^y^2 + 3^x * cos(3y)  x Evaluate dy/dx I get to: dy/dx (1+3y) = e^y^2 * 3y^2 * dy/dx + 3^x * ln3 * (sin(3y)) * 3 *dy/dx 1 Will it give me? dy/dx(1+3y) = dy/dx((e^y^2 * 3y^2)
asked by Tom 
Physics
A beam has a mass M and length L. A point mass m is located in distance d from the end of the beam and the point mass and the beam lies on the same line.a)Calculate the gravitational force of the beam on the point mass.b)Calculate the gravitational force
asked by Amber 
precalculus
Find (a) the equation of a line that is parallel to the given line and includes the given point, and (b) the equation of a line that is perpendicular to the given line through the given point. Write both answers in slopeintercept form. (c) Graph both of
asked by tinathomas 
Grammar
1.Each of the patients __________ discharged at noon. A) was B) were 2.Each of the nurses __________ her favorite uniform. A) has B) have 3.The nurse asked the patient and _________ to leave the room. A) I B) me C) myself 4.They will call someone who can
asked by Cindy 
discussion
What is the difference between current sources and relevant sources? Is it possible a source might fit one category, but not the other? How?
asked by cassandra 
math
Let W be the set of all continuous !@#$%^&tions from the set of real numbers R to R. For f, g in W define f+g by (f+g)(x)=f(x)+g(x) and (f*g)=f(x)g(x). Verify that W is a commutative ring. Does W have unity? Why or why not?
asked by Mary 
college algebra
The area of a rectangular swimming pool is given by 4x^2+19x+12ft^2.One side length of the pool is given by 4x + 3 feet. What is an algebraic expression for the other side length of the pool?
asked by bridgerunner 
physics
Q A man throws a ball weighing 500g vertically upwards witha speed of 10m/s. 1) what will be its initial momentum? 2) What would be its momentum at the highest point of his flight?
asked by asd 
English
I urgently need to revise these sentences. Could you please help me? 1) In my family we are six of us: my father, my mother etc. 2) I like very much playing instruments. I don't like doing shopping. I like lots of sports. 3) My mum usually cooks breakfast
asked by Henry2 
chemistry
what is the ph of a solution that has [H] = 0.0045 can you show steps pls
asked by Monique 
trig
I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin1.5 3. cos 8x  cos 2x as a
asked by Kevin 
Physics
An 83.2kg propeller blade measures 2.24m end to end. Model the blade as a thin rod rotating about its center of mass. It's initially turning at 175rpm. Find the blade's angular momentum, the tangential speed at the blade tip, and the angular acceleration
asked by Jessica 
6th grade science
limestone is made of the remains of organisms.In what way have decaying plants changed Florida's limestone bedrock? 1) decaying plants acidify water,which desolves limestones 2)decaying plants absorb water,which keeps limestone from dissolving 3)decaying
asked by Kate 
Math
Use your new conjectures to arrange the unknown measures in order from greatest to least. Measures 5cm,9cm and 12cm
asked by Tahzh 
sdfghj
a certain force acting on a body of mass 2 kg increases it's velocity from 6m/s to 15m/s in 2 seconds . the work done by the force during this interval is ?
asked by bh 
Math
Simplify by factoring Assume that all expressions under radicals represents non negative numbers 3square root symbol 162x8 I end up with 3x 3squareroot symbol 2x^5 I don't think this is correct help
asked by Allison 
MATH
A set of 50 data values has a mean of 27 and a variance of 16. I. Find the standard score (z) for a data value = 19. II. Find the probability of a data value < 19. III. Find the probability of a data value > 19.
asked by Jennifer 
math
list all the possible rational zeros for the polynomial below. find all the zeros of the polynomialbelow and factor completely. F(x)=5x^4x^333x^243x16
asked by Deandra 
Calculus
Find the three zeros for the following function on the interval 5
asked by Mishaka 
Opinion on Myths
What do you make of the similarities between Japanese and Greek myths (for lack of a better word)?
asked by anon 
algebra
is the ordered pair a solution of the inequality? (6,15); 8y9x>8
asked by nina 
Business English
This email must me turned into a Routine Inquiry. Hello, I'm currently having a retail company that I import biological products, called 'Healthy life'. I saw your company advertisment on october 2011 in Dwell magazine and decided to communicate with you.
asked by lisa 
Computer
If you want to create images that can be easily resized, or one that looks like it was created with a pencil or pen, you should choose a __________ graphics package. (Points: 5) bitmapbased colorized rasterbased vectorbased Is it D
asked by john 
chemistry
A salt is obteind as a reaction between
asked by Anonymous 
math
Establish a 99% confidence interval for the population proportion if a sample of 200 had a sample proportion of 42%.
asked by King 
Find the Zeros
Find the three zeros for the following function on the interval 5
asked by Mishaka 
Math
Calculate the minimum sample size required to find the 90% interval estimate for a population proportion if you want to be accurate within 2%.
asked by King 
precalculus
Solve the logarithmic equation. Express your solutions in exact form only. 18e^x e^x=7
asked by tina 
SI Chemistry
What could you do to make sure that you yielded all of the product possible in an equilibrium system? btw you guys are awesome! you are total life savers on these!
asked by Cody 
literary
Do many people believe what they do without giving those beliefs critical scrutiny?
asked by Anonymous 
MATH
2x 4y = 8 find the real number for x and y
asked by angela 
Chemistry
Name 3 buffers that exist in the human body? Include the conjugate and acid base pairs
asked by Monique 
physics
a helicopter has a speed relative to the air of 76km/h northeast. The speed of the wind relative to the ground is 28km/h south. 2 hours after leaving the ground, what is the displacement of the helicopter relative to the ground?
asked by jen 
chemistry
Sorryy but I still don't understand will you show the calculations for my previous question
asked by sonya 
operations management
Pure Plastics Inc. manufacture molded plastic pieces. A sample of their raw material inventory is shown in the table below: Item Average Inventory (units) Value ($/unit) 128 400 3.75 234 300 4.00 233 120 2.50 236 75 1.50 239 60 1.75 240 30 2.00 678 20 1.15
asked by cheryl 
logic
A famous detective was called in to solve a baffling murder mystery. He determined there was only one cause of death along with the following facts: a.Mr. Harold, the murdered man, was killed by a blow on the head with a brass candlestick. b.Either his
asked by Dell 
Grammar
1.A piece of the suture __________ embedded in the scar tissue. A) was B) were 2.He is the doctor __________ performed my appendectomy A) who B) whom C) whose 3.Neither the fracture nor the laceration __________ surgery. A) require B) requires 4.The
asked by Cindy 
business ENGlish  Claim letter
This is the exercise below i'm gonna write my answer: You need to write the Parks Board in your country a request for a refund. You held a family reunion at whitewater park on Saturday at the OAK pavilion which you had reserved for your group at a cost of
asked by lisa 
math
1.0 Solve for x: (a) 2x ¨C 3(x + 2) ¡Ý 5x ¨C( x 5) (b) Solve simultaneously x  5¡Ü 2 and x ¨C 1 ¡Ý 3 2.0 Find solution to: (a) 5/(x1) > 0 (b) (3x+3)/(3xx2 ) < 0
asked by lupupa 
grammar checking
Hi :) I need help to see if my grammar is proper, and if not please help me this is my first paragraph. :) Fables are short stories that have animals as characters. A fable teaches a moral, and morals are valuable lessons. So, all fables teach us lessons
asked by Zahra Fradi 
opinion
Do you think that fantasy movies about social issues help to bring the right kind of attention to the matter, or do they detract and/or lessen it's actual severity?
asked by anon 
math
solve the inequality, write answer using interval notation pleas show the work 50/x+4+1
asked by mz tee 
Psychology
I found an article on 9/11 and its psychological impact prior to today. I think that it's related to counseling, health, and/or social psychology after reading it.
asked by Alex L. 
Geology(GIS)
How can I get the coordinates of major industries in Riverside county added to a ArcMap?...Its a project and i need some help putting daTA INTO MY map...Thank You!!!..
asked by Rose 
socials
another same paragraph question. In the early months of the war, Mackenzie King hoped that Canada's contribution to the war effort would remain as much as possible at home. This way, the issue of conscription could be avoided. The British Commonwealth Air
asked by Mohammad 
spirituality and supernatural
We can see that spirituality and the supernatural plays a large role in any culture and society, it's influence can be seen in the Buddhist sects of Japan. How this influence is seen within the Japanese culture through modern media and films. How do films
asked by anon 
Precalc (complete the squares)
(2x+1)^2 +4=0 solve the equation. help please :(
asked by Cindy 
Managerial Economics
(LongRun Average Cost Curve) Explain the shape of the longrun average cost curve. What does “minimum efficient scale” mean?
asked by Cindy 
chemistry
what is the concentration of the hydroxide ion in an acidic solution?
asked by Monique 
precalculus logs
what is the domain of f(x)=ln(x) and the inverse
asked by adly 
Chemistry
How do valence electrons play a part in the physical or chemical charactersitics of an element?
asked by Lauren 
math
What is the slope of a line that is parallel to y=2? What is the slope of a line that is perpendicular to y=2? Is it "0"?
asked by Jane 
statistics
give an example where the median would be less than the mean.
asked by Dee 
English
I urgently need to express these concepts. (Actually, I tried to express the same concept in two different ways). I hope you can help me. 1) Thank you very much for your cooperation in carrying out a common project involving both our school. 2) I can
asked by Henry2 
Calculus (2)
find the first and second derivative of: f(x) = (x+2)/e^x I get to: f'(x) = e^x  (x+2)(e^x) / (e^x)^2 I'm stuck at that
asked by Tom 
precalculus
Given f(x) and g(x) below, find: (a) f + g (b) f – g (c)f*g(d)f/g Please show all of your work. f(x) = 5x^25 g(x) = x – 7
asked by kawn 
computer
What graphics program would you use to create a vectorbased graphic that is easily resizable? (Points: 5) CAD Draw Paint Photoediting im confused between A and C
asked by john 
Physics
how much work is done when a magnet pulls a piece of iron?
asked by Jeet 
Maths
How to solve questions on Rates
asked by Barclay 
English
Could you please help me express the following concept? I included two other sentences. 1) I need to start an email saying that I'm extremely sorry for writing so late. (because I've been busy checking with students' tests). 2) Many animals risk dying
asked by Henry2 
science
What object has a capacity of exactly 80 cups. 1.Bucket 2.Punch Bowl 3.Fish Tank 4.Sink
asked by mari 
algebra
Please I need help: Find the vertex, the line of symmerty and the maximum or minmum value of the quadratic function: f(x)= 2x^2+2x+3
asked by jane 
Communication Skills
I have this text and i don't understand the question that's below it (English is not my first language... and im not looking for answer its just i'd like to understand the question so i can come up with answer myself) Charlotte is a 43 year old mother of
asked by Viola 
statistics
given 100,90,80,75,70,60,30,25,5,4 what score corresponds to the 70th percentile?
asked by Dee 
Math
Can you simplify the fraction 63/323? I've tried....
asked by Annie 
COM 150
Will someone please check this assignment for me? COM 150 Comprehensive Grammar CheckPoint Read the following sentences, and focus on the grammar area specified in the left column. Then, complete Appendix H by selecting the correct sentence (a or b) for
asked by Sade C 
precalculus
solve the inequality in the complex number system. x^4+x^3+4x^2+10x60=0
asked by Deandra 
calculus
how would you differentiate ((x^2+1)^{1/2))/(1/2)+ln(x+(x^2+1)^(1/2)
asked by Joey 
Math
Divide the sum of x^2+4x1 & 2x2 by 3x^4
asked by Alice 
college math
use long division 1.2x3+3x217x+1 /x2 2.y3+3y2+1 /y2 3.n5n2 /n2n
asked by erin 
math
Use fraction bars to find the difference. Write the answer in simplest form. 5  3 1/2
asked by stephanie 
English
I left out the following sentences. Thank you very much for your invaluable help! 1) I don't like reading novels because they are sometimes too abstract. I've got a quite oval face. 2) I like doing clothes shopping. At five o'clock I do to calisthenics
asked by Henry2 
Logic
Lalph Rauren was famous for discovering potential models as he walked the streets of New York. One day he spotted four girls who later became top models: Amy, Mary, Kay, and Beth. One was discovered walking through an apartment building, one in a coffee
asked by Dell 
History
In the book Conscience by Louisa Thomas, from the first chapter to the sixth, is there any main event that occurs? I know that Norman goes to Princeton, then travels a lot to different churches and he gets married, but these aren't really main events yet.
asked by Anonymous 
Math
How do i arrange these from least to greatest 4/4, 3/8, 2/3, 5/10
asked by Melonie 
Riddle HELP
so heres the riddle ,i am fat but little im on a tv show for little kids im blue my name starts with b i have to horns in my head and im dangers what am i?
asked by lizzy