Sunday

April 19, 2015

April 19, 2015

Total # Posts: 3,276

**physics**

Poissons equation for the yukawa potential is given by; Phi(r)=-(G*M exp(-alpha*r))/r what is the analogue of poissons equation for this potential.
*February 10, 2014*

**statistics**

Find the probability that among six randomly selected people, exactly four of them have brown eyes. Assume that 40% of the population has brown eyes
*February 9, 2014*

**Physics**

A dockworker applies a constant horizontal force of 73.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 11.5m in a time 5.40s . a.) What is the mass of the block? b.)If the worker stops ...
*February 7, 2014*

**Math**

Megan's dog Sparky eats 4 1/4 c of food each day. Explain how Megan can determine how much food to give Sparky if she needs to feed him only 2/3 as much. Solve the problem.
*February 6, 2014*

**math**

A pronghorn antelope can travel 105 miles in 3 hours.if it continued at the same speed how far could a pronghorn travel in a 11 hours
*January 30, 2014*

**Chemistry**

What is the mass of sodium nitrate NaNO3 that you would need to add to 250 g of water in order to prepare a solution that is 0.200 molal in NaNO3?
*January 30, 2014*

**Engineering science N4**

Calculate the angle of projection of a projectile in order to hit a target 12km away.the initial velocity is 700m/s ant the time of the flight is 80seconds.
*January 30, 2014*

**Engineering science N4**

A ship is 100km north-west of cape town harbour and it sails directly north at a velocity of 30km/h in 8 hours.calculate its resultant speed with reference to the cape town harbour in magnitude and direction.
*January 30, 2014*

**algebra 1**

oh thanks
*January 28, 2014*

**algebra 1**

I got 6.565in^2
*January 28, 2014*

**algebra 1**

The cheerleaders are making buttons for homecoming. They are printing paper circles with a diameter of 3 inches that will be folded over a metal backing and covered with clear plastic. If a 1/2 inch border is folded over, how much of the picture will show on the finished ...
*January 28, 2014*

**chemistry**

1. An 887.0 mg sample of a mixture containing only NaCl and KCl is dissolved in water, and excess AgNO3 is added to yield 1.913 g of AgCl. Compute the mass-% of each compound in the mixture.
*January 26, 2014*

**research**

the evaluation of a "Scared Straight" program in California by Lewis (1983). Prior to Lewis' evaluation, what had previous research reported about scared straight programs?
*January 18, 2014*

**research**

What previous research was reported about scared straight programs prior to Lewis’ evaluation?
*January 18, 2014*

**law**

What recent court cases have been decided on the right to keep and bear arms?
*January 11, 2014*

**algebra**

50. Steve borrows $4,800 from his parents to purchase a used car. No interest is charged on the loan and Steve will pay his parents $150 per month until the loan is paid off. (a)Write a function that describes the relationship between the amount Steve owes his parents and the ...
*January 2, 2014*

**criminal justice**

What are the five social domains that affect the reentry process
*December 20, 2013*

**criminal justice**

Will privatization solve the cost and overcrowding problems in state and federal prisons?
*December 14, 2013*

**Social Studies**

Why is cross-cultural exchange an important part of the history of the Iberian Peninsula? I need three different examples and only have one; your thoughts would be greatly appreciated!
*December 10, 2013*

**law**

can someone help me find the information I need for this question please. What are the theoretical and practical problems with the comprehensive punishment system Morris and Tonry propose?
*December 8, 2013*

**Math**

Thanks Reiny and Bosian!!!
*December 7, 2013*

**Math**

A jar of peanut butter which is 3 inches in diameter and 4 inches high sells for $0.60. At the same rate, what would be the price for a jar that is 6 inches in diameter and 6 inches high?
*December 7, 2013*

**Math**

What is equivalent percent of 2/6? . What is equivalent percent of 4/6?
*December 5, 2013*

**algebra**

A ball is thrown upward from a height of 240 feet. the height h of the object(in feet) t seconds after the ball is released is given by h=-16t^2+32t+240 a. how long does it take the ball to reach its maximum height? b. what is the maximum height attained by the ball? c. how ...
*December 5, 2013*

**Math**

If 2/5 of a figure is shaded, what percent is not shaded?
*December 3, 2013*

**Math**

Explain why 2/3 > 2/6
*December 2, 2013*

**science**

For the reaction mc011-1.jpg at 472°C equilibrium is established when [H2] =0.0200M, [N2] = 0.0100M and [NH3] = 5.37 x 10-8M. What is the equilibrium constant for this reaction
*November 25, 2013*

**Statistics**

A VP of manufacturing claims that more than 3% of items produced using a certain assembly line are is defective. A random sample of 100 items from the assembly line had 4 defectives. At the 5% level of significance, which of the following would be part of the standardized ...
*November 18, 2013*

**Statistics**

A recent Gallup Poll dealt with the proportion of Canadians who favoured the various Prime Ministers. It found that only Pierre Trudeau did quite well, of all Prime Ministers in recent memory, and that the proportion favouring Brian Mulroney is quite low. A newspaper article ...
*November 18, 2013*

**Statistics**

A VP of manufacturing claims that more than 3% of items produced using a certain assembly line are is defective. A random sample of 100 items from the assembly line had 4 defectives. At the 5% level of significance, which of the following would be part of the standardized ...
*November 18, 2013*

**Physics- torque**

A man ties one end of a strong rope 8.35 m long to the bumper of his truck, 0.506 m from the ground, and the other end to a vertical tree trunk at a height of 3.92 m. He uses the truck to create a tension of 8.32x10^2 N in the rope. Compute the magnitude of the torque on the ...
*November 18, 2013*

**physics**

He uses the truck to create a tension of 8.32x10^2 N in the rope.
*November 18, 2013*

**physics**

A man ties one end of a strong rope 8.35 m long to the bumper of his truck, 0.506 m from the ground, and the other end to a vertical tree trunk at a height of 3.92 m. He uses the truck to create a tension of 8.32 102 N in the rope. Compute the magnitude of the torque on the ...
*November 18, 2013*

**MATH**

Mortgage lenders base the mortgage interest rate they offer you on your credit rating. This makes it financially critical to maintain a credit score of 700 or higher. How much more interest would you pay on a $195,000 home if you put 20% down and financed the remaining with a ...
*November 9, 2013*

**chemistry**

How many mL of 0.0500 M EDTA are required to react with 54.0 mL of 0.0190 M Ca2+?
*November 5, 2013*

**Statistics**

The coding department of a large physician clinic is interested in purchasing a software program that will edit claims before they are sent out to billing. The license fee for the software costs $34,000 per year. The software is expected to reduce the number of errors on ...
*October 30, 2013*

**Statistics**

Consider the following ANOVA experiments. (Give your answers correct to two decimal places.) (a) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4, with n...
*October 30, 2013*

**Statistics**

Consider the following table for a single-factor ANOVA. Level of Factor Replicates 1 2 3 1 1 2 5 2 2 4 7 3 2 4 7 (a) Find x1,2. (b) Find x2,1. (c) Find C1. (d) Find x. (e) Find (Ci )2.
*October 30, 2013*

**English**

Could anybody diagram this sentence? "What a most delightful quatrain Jamie has written." Where would the placement of the word "What" go in the diagram?
*October 27, 2013*

**law**

What are the benefits of voluntary support and how is it linked to police legitimacy?
*October 25, 2013*

**math**

the biology class has a lab every days. the earth science class has a lab every three days . which class day do they both have class ?
*October 22, 2013*

**crime**

where can I found information on adult siblings crimes against one another
*October 19, 2013*

**criminal justice**

identify a media account of a criminal justice issue; it can be a movie, a news report, or a television program. •Briefly describe what the media account is discussing. •Identify the myth that the media account is highlighting I just need some suggestion on where to ...
*October 18, 2013*

**Physics**

A spring has a spring constant of 25N/m . Part A How much work is required to stretch the spring 2.0cm from its equilibrium position?
*October 17, 2013*

**Physics**

If a 14N force is used to compress a spring with a spring constant of 5.0×102N/m , what is the resulting spring compression?
*October 17, 2013*

**Math**

P=ert 13000=e.045(1)
*October 8, 2013*

**arithmetic**

2+15/3*5=
*October 6, 2013*

**MATH**

4=(R-.75R)
*October 4, 2013*

**MATH**

4=(R-.75R)
*October 4, 2013*

**Math**

Simplify: (1/5x^4+1/3xy^2+1/2y^2)+(6/5x^2y^2+2xy^2+11/6y^2)
*September 28, 2013*

**math **

x, y, 3y If the average (arithmetic mean) of the 3 numbers above is 3x and x≠0, What is y in terms of x?
*September 28, 2013*

**math**

X3Y+5YX = 1,33X In the correctly worked addition problem above, X and Y represent 2 different digits. What digit does X represent? a. 0 b. 1 c. 4 d. 8 e. 9
*September 28, 2013*

**math**

If a job takes 64 men to complete in 15 days, how many more men will take to complete the job in 12 days?
*September 28, 2013*

**Physics**

a bicyclist rides 10.0 km/h west and 20.0 km/h east what is the resultant velocity
*September 18, 2013*

**Math help please!!!**

Determine the equation of g(x) that results from translating the function f(x) = x2 + 7 upward 12 units.
*September 17, 2013*

**HELP! Geometry**

1. Why is the word coplanar included in the definition for parallel lines? 2. Explain why you think the angle pairs formed by two lines and a transversal are related. Why might it be helpful to identify them as angles that go together instead of independent angles
*September 6, 2013*

**science**

When 36.0g of sodium chloride is added to 100 g of H2O (water) at 25°C all the salt particles dissolve.Yet if you add one more g of salt and stir,no matter how vigorously or how long only 0.2g of the last portion dissolve in the soln.why?
*September 5, 2013*

**Chem**

The age of a bone was to be determined by 14C dating. 14C has a half-life of 5,730 years, and a Geiger counter shows that the 14C in living tissue gives 15.2 cpm g-1 of carbon. If the same Geiger counter shows that the 14C in a sample of the bone gives 3.8 cpm g-1 of carbon, ...
*August 28, 2013*

**trig**

PROVE: Cos 2theta = .5 (cot theta - tan theta) Please help me
*August 14, 2013*

**math**

The distance in feet that a skydiver is from the ground (t) seconds after jumping from an airplane flying at 17,000 ft above ground is given by the following equation: d(t)=-16t^2 +17000. a.) how many feet above ground is the skydiver above ground after 4 seconds? b.)how many ...
*August 14, 2013*

**math**

If f(x)= 5x+2/3 - 2x-4/3, What is the value of f(x)-x
*August 13, 2013*

**math**

when 4 numbers b, b^2, b^3, and b^4 were arranged in order from smallest to largest, the result is b, b^3, b^4, and b^2. Which of the following is a possible value for b? The choices are: 1. 7/2 2. 11/6 3. 7/10 4. -2/5 5. -7/4
*August 13, 2013*

**math**

What is the domain of f(x)=15/x-3? the choices are: 1. All integer values of x 2. x<0 or x>0 3. x≤-3 or x≥3 4. x≠3 5. x<-3 or 0<x<3
*August 13, 2013*

**math**

The cost of a certain new car is g dollars. The car is on sale for h% off this price. What is the total cost of the car on sale after the addition of 7% sales tax?
*August 13, 2013*

**Math**

2,500 in expanded form
*August 9, 2013*

**introduction to finance-16**

if you put $4000 in savings account that pays interest rate of 4%, compounded annually, how much will you have in 5 years? How much interest will you earn during the 5 years? If you put $4000 each year into a savings account that pays interest at the rate of 4% a year, how ...
*August 9, 2013*

**Biology**

D: FRUIT
*August 6, 2013*

**Harvard Justice**

If reasoning about the good means that you must have a single principle or rule or maxim or criterion for the good life that you simply plug in every time who have a disagreement about morality, then the answer is "Yes."
*July 31, 2013*

**physics**

The angular speed of the rotor in a centrifuge decreases from 226 to 186.0 rev/s with an angular deceleration of 6.4 rev/s2. During this period, how many revolutions does the rotor turn?
*July 29, 2013*

**Business; Finance**

Texas Wildcatters Inc. (TWI) is in the business of finding and developing oil properties, and then selling the successful ones to major oil refining companies. TWI is now considering a new potential field, and its geologists have developed the following data, in thousands of ...
*July 25, 2013*

**Math**

What would be the amount of compound interest on $8,000 invested for one year at 6%, compounded quarterly?
*July 21, 2013*

**math-statistics**

The following risk ratios give the increased risk for various diseases comparing two groups (exposed vs. unexposed). a. 2.5 (2.0, 3.0) b. 1.03 (1.02, 1.04) c. 6.0 (.85, 9.8) d. 0.98 (0.88, 1.08) e. 0.20 (.05, 1.05) Which risk ratios are statistically significant at the 0.05 ...
*July 17, 2013*

**math**

A box contains 5 blue and 4 red marbles. In how many ways can 4 marbles be drawn so as to include 2 red marbles?
*July 17, 2013*

**Chemistry**

The solubility of AgCl (s) is 2.5 x 10^-5 M. calculate the ksp
*July 10, 2013*

**Statistics**

The following risk ratios give the increased risk for various diseases comparing two groups (exposed vs. unexposed). a. 2.5 (2.0, 3.0) b. 1.03 (1.02, 1.04) c. 6.0 (.85, 9.8) d. 0.98 (0.88, 1.08) e. 0.20 (.05, 1.05) Which risk ratios are statistically significant at the 0.05 ...
*July 9, 2013*

**Statistics**

How would a histogram change if we increase the number of simulations? A. It would simply be more smooth. B. The p-value would get smaller. C. The standard error would get smaller. D. The distribution would be more similar to a T-distribution.
*July 8, 2013*

**Statistics**

The Centers for Disease Control (CDC) collects yearly statistics on drinking behavior in the United States by surveying a random sample of U.S. adults. The following data display the percent of adults aged 18 years and over who had 5 or more drinks in 1 day at least once in ...
*July 8, 2013*

**venns diagrams**

20
*July 7, 2013*

**PHYSICS 2**

An electron in an x-ray machine is accelerated through a potential difference of 1x10^4 V before it hits the target. What is the kinetic energy of the electron in electron volts?
*June 30, 2013*

**Math**

Find the largest possible degree n≤1000 of a polynomial p(x) such that: p(i)=i for every integer i with 1≤i≤n p(−1)=1671 p(0) is an integer (not necessarily 0).
*June 18, 2013*

**Macroeconomics**

(Monetary Policy and Aggregate Supply) Assume that the economy is initially in long-run equilibrium. Using an AD–AS diagram, illustrate and explain the short-run and long-run impacts of an increase in the money supply.
*June 15, 2013*

**Calculus**

A car leaves an intersection traveling west. Its position 5 sec later is 22 ft from the intersection. At the same time, another car leaves the same intersection heading north so that its position 5 sec later is 27 ft from the intersection. If the speed of the cars at that ...
*June 13, 2013*

**Calculus**

The total worldwide box-office receipts for a long-running movie are approximated by the following function where T(x) is measured in millions of dollars and x is the number of years since the movie's release. T(x) = (120x^2)/(x^2 + 4) How fast are the total receipts ...
*June 13, 2013*

**Calculus**

Suppose f and g are functions that are differentiable at x = 1 and that f(1) = 2, f '(1) = -1, g(1) = -2, and g '(1) = 3. Find the value of h '(1). h(x) = (x2 + 11) g(x) h '(1) =
*June 13, 2013*

**Calculus**

The relationship between the amount of money x that Cannon Precision Instruments spends on advertising and the company's total sales S(x) is given by the following function where x is measured in thousands of dollars. S(x) = -0.002x3 + 0.9x2 + 4x + 500 (0 x 200) Find the ...
*June 13, 2013*

**Calculus**

The demand function for the Luminar desk lamp is given by the following function where x is the quantity demanded in thousands and p is the unit price in dollars. p = f(x) = -0.1x2 - 0.3x + 39 (a) Find f '(x). f '(x) = (b) What is the rate of change of the unit price ...
*June 13, 2013*

**Calculus**

Find the points on the graph of f where the tangent line is horizontal. f(x) = x3 - 15x2 (x, y) = ( , ) (smaller x-value) (x, y) = ( , ) (larger x-value)
*June 13, 2013*

**Calculus**

Find the slope and the equation of the tangent line to the graph of the function f at the specified point. f(x) = -8/5 x^2 + 7 x + 7;(-1, -8/5) slope tangent line y =
*June 13, 2013*

**Calculus**

Let f(x) = 4x5/4 + 10x3/2 + 9x. Find the following. (a) f '(0) = (b) f '(16) =
*June 13, 2013*

**spanish **

luke y renato / venir / a tu casa / para escuchar música nosotros / poder / almorzar / con lori y roberto thad y lorenzo / preferir / salir / con sus amigos berta y amanda / querer / almorzar / en el parque can someone help i am lost i have to put these words in to ...
*June 11, 2013*

**Accounting**

Samuels, Inc. reported net income for 2011 is $105,000. During 2011 the company had 5,000 shares of $100 par, 5% preferred stock and 20,000 of $5 par common stock outstanding. Samuels’ earnings per share for 2011 is A.$4.00 B.$5.25 C.$6.50 D.$5.00
*June 9, 2013*

**Accounting**

On April 1, 2011, Albert Company purchased $50,000 of Tetter Company’s 12% bonds at 100 plus accrued interest of $2,000. On June 30, 2011, Albert received its first semiannual interest. On February 1, 2011, Albert sold $40,000 of the bonds at 103 plus accrued interest. ...
*June 9, 2013*

**Accounting**

Available-for-sale securities are securities that management expects to sell in the future, but are not actively traded for profit. A.True B.False
*June 9, 2013*

**Accounting**

Ruben Company purchased $100,000 of Evans Company bonds at 100 plus $1,500 in accrued interest. The bond interest rate is 8% and interest is paid semi-annually. The journal entry to record the receipt of interest on the next interest payment date would be: A.Debit: Cash $4,...
*June 9, 2013*

**Accounting**

When long-term investments in bonds are sold before their maturity date, the seller deducts any accrued interest since the last interest payment date from the selling price. A.True B.False
*June 9, 2013*

**Accounting**

Jacks Corporation purchases $200,000 bonds plus accrued interest for 2 months of $2,000 from Kennedy Company on March 1. The bonds have an annual interest rate of 6% payable on June 30 and December 31. The entry to record the purchase of the bonds would include: A.Interest ...
*June 9, 2013*

**Accounting**

Which of the following is not a part of comprehensive income? Answer foreign currency items restructuring charges unrealized gains and losses pension liability adjustments
*June 9, 2013*

**physics**

I have another question for the problem below, so What is the speed of the car just before it lands safely on the other side? would it be the same 38.6 meters/sec A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the ...
*June 4, 2013*

**physics**

I have another question for the problem below, so What is the speed of the car just before it lands safely on the other side? would it be the same 38.6 meters/sec A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the ...
*June 4, 2013*

**physics**

I have another question for the problem below, so What is the speed of the car just before it lands safely on the other side? would it be the same 38.6 meters/sec A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the ...
*June 4, 2013*