Questions
7. Ball X of mass 1.0 kg and ball Y of mass 0.5kg travel toward each...
7. Ball X of mass 1.0 kg and ball Y of mass 0.5kg travel toward each other on a horizontal surface. Both balls travel with a constant speed of 5 m/s until they collide. During the collision, ball Y exerts an average force with a magnitude of 40N for 1/6s on ball X . Which of the following best predicts ball momentum after the collision?
A Ball Y will travel at a speed less than 5 m/s in the same direction of travel as before the collision.
B Ball Y will travel at a speed less than 5 m/s in the opposite direction of travel as before the collision.
C Ball will travel at a speed greater than 5 m/s in the same direction of travel as before the collision.
D Ball Y motion cannot be predicted because the impulse on it is not known.
The answer is C but I do not understand why. Please refrain from using any Calculus
In: Physics
A child hits an ice cube with a mass of 10 grams on a table with...
A child hits an ice cube with a mass of 10 grams on a table with a force of 10 N. The impact lasts 0.02 seconds. The ice cube flies off the table, which is 1 meter high and lands some distance away. Assume there is no friction between the ice cube and the table. a. What is the velocity of the ice cube when it leaves the table? b. What is the final velocity of the ice cube just before it hits the floor? c. What is the momentum of the ice cube just before it hits the floor? d. What distance will the ice cube land from the foot of the table? e. Suppose the ice cube had broken into two pieces just after the child hit the ice and moved away from each other while falling to the floor. How would the total momentum of the two pieces just before they hit the floor compared to the momentum you found in part (c)?
In: Physics
The stockholders’ equity of TVX Company at the beginning of the day on February 5 follows:...
The stockholders’ equity of TVX Company at the beginning of the day on February 5 follows: Common stock—$5 par value, 150,000 shares authorized, 59,000 shares issued and outstanding $ 295,000 Paid-in capital in excess of par value, common stock 525,000 Retained earnings 675,000 Total stockholders’ equity $ 1,495,000 On February 5, the directors declare a 16% stock dividend distributable on February 28 to the February 15 stockholders of record. The stock’s market value is $46 per share on February 5 before the stock dividend. The stock’s market value is $40 per share on February 28.
One stockholder owned 700 shares on February 5 before the dividend. Compute the book value per share and total book value of this stockholder’s shares immediately before and after the stock dividend of February 5.
Compute the total market value of the investor’s shares in part 2 as of February 5 and February 28.
In: Accounting
Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed...
Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. In particular, Nate would often don a protective suit of Bounce-Tex, which he invented, and after working up a high speed on his skateboard, would collide with some object. In this way, he got a gut feel for the physical properties of collisions and succeeded in combining his two passions." On one occasion, the Skate, with a mass of 115 kg, including his armor, hurled himself against a 833 kg stationary statue of Isaac Newton in a perfectly elastic linear collision. As a result, Isaac started moving at 1.61 m/s and Nate bounced backward.
What were Nate's speeds immediately before and after the collision? Enter positive numbers). Ignore friction with the ground
By the way, this brief bio of Nate the Skate is written in the past tense, because not long ago he forgot to put on his Bounce- Tex before colliding with the Washington Monument in a perfectly inelastic collision. We will miss him.
In: Physics
Right before opening the Lansing store discussed in problem 1, you have discovered that Fort Wayne forgot to budget 10% of revenues as a cash balance, 20% of cash expenses as an inventory balance, and 10% of cash expenses as an accounts payable balance.
| Year 1 | Year 2 | Year 3 | Year 4 | Year 5 | |
| Revenues | $16,000 | $20,000 | $38,000 | $48,000 | $35,000 |
| Less: Cash expenses | ($8,000) | ($5,000) | ($14,000) | ($19,000) | ($19,000) |
| Less Depreciation | ($3,000) | ($4,000) | ($3,000) | ($3,000) | ($3,000) |
| Income before tax | $5,000 | $11,000 | $21,000 | $26,000 | $13,000 |
| Less: Tax @ 40% | ($2,000) | ($4,400) | ($8,400) | ($10,400) | ($5,200) |
| Income after tax | $3,000 | $6,600 | $12,600 | $15,600 | $7,800 |
| Add: Depreciation | $3,000 | $4,000 | $3,000 | $3,000 | $3,000 |
| After tax cash flows | $6,000 | $10,600 | $15,600 | $18,600 | $10,800 |
Right before opening the Lansing store discussed in problem 1, you have discovered that Fort Wayne forgot to budget 10% of revenues as a cash balance, 20% of cash expenses as an inventory balance, and 10% of cash expenses as an accounts payable balance. All of these balances would be needed at the beginning of each year and are estimated from the year-end annual estimates of revenues and cash expenses given earlier. Recalculate the cash flows for the Lansing store investment.
In: Finance
When firms decide to offer health insurance to their workers [for simplicity we assume they pay...
When firms decide to offer health insurance to their workers [for simplicity we assume they pay the full cost of the policy and do not ask for an employee contribution], they need to reconsider the wages they are willing to pay their workers. Assume the worker values the health insurance at full cost. Please use a labor supply and demand graph (as we covered in class) to analyze the effect of introducing insurance on the labor market.
Part A: Show the supply and demand lines before and after health insurance is offered. Make sure to always label graphs well and indicate the equilibrium level of wages that result before and after health insurance is offered. How does this help us see who really pays for employer provided health insurance?
Part B: Suppose the original demand for labor equation is given by W=12-0.5L and the original labor supply equation is given by W=L. Suppose that health insurance costs $2 per worker. Please write down the new equations for the demand and supply graphs once insurance is introduced, and explain how you obtain them.
In: Economics
Suppose the country of Coventry is joining a customs union (CU). It can buy Product S...
Suppose the country of Coventry is joining a customs union (CU). It can buy Product S from the country of Plata or the country of Soyuz. Plata is not in the CU, while Soyuz is in the CU. Before joining the CU, Coventry has a tariff on all imports of Product S. After joining the CU, Coventry does not have a tariff on the Product S imported from other countries in the CU, but maintains its tariff on the Product S imported from countries outside the CU. The tariff, when applicable, is $7. (Use the Basic Tariff Model in this analysis and assume no foreign retaliation on this product.)
1. The price of Product S from Plata is $62 and the price of Product S from Soyuz is $73. Suppose Coventry changes from not being in the CU to being in the CU.
(a) Who is Coventry’s supplier of Product S before joining the CU? After joining the CU?
(b) Is there a trade creation effect in this case?
(c) Is there a trade diversion effect in this case? Why?
(d) What happens to the Coventry Total Surplus for Product S because it joined the CU? Why?
In: Economics
Suppose the country of Coventry is joining a customs union (CU). It can buy Product S...
Suppose the country of Coventry is joining a customs union (CU). It can buy Product S from the country of Plata or the country of Soyuz. Plata is not in the CU, while Soyuz is in the CU. Before joining the CU, Coventry has a tariff on all imports of Product S. After joining the CU, Coventry does not have a tariff on the Product S imported from other countries in the CU, but maintains its tariff on the Product S imported from countries outside the CU. The tariff, when applicable, is $7. (Use the Basic Tariff Model in this analysis and assume no foreign retaliation on this product.)
3. The price of Product S from Plata is $62 and the price of Product S from Soyuz is $65. Suppose Coventry changes from not being in the CU to being in the CU.
(a) Who is Coventry’s supplier of Product S before joining the CU? After joining the CU?
(b) Is there a trade creation effect in this case?
(c) Is there a trade diversion effect in this case? Why?
(d) What happens to the Coventry Total Surplus for Product S because it joined the CU? Why?
In: Economics
An SAT prep course claims to improve the test score of students. The table below shows...
An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d=(verbal SAT scores prior to taking the prep course)−(verbal SAT scores after taking the prep course). Use a significance level of α=0.05 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course.
Score on first SAT 470 560 430 590 490 410 460
Score on second SAT 520 620 450 610 530 460 500
Step 2 of 5 : Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.
In: Statistics and Probability
purchases equipment on account. How would this affect the accounts on the books? Equipment increase, accounts...
purchases equipment on account. How would this affect the accounts on the books?
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Equipment increase, accounts payable increase |
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Equipment increase, cash decrease |
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Equipment increase, accounts receivable increase |
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Cash increase, equipment decrease |
Wonky Willa's Chocolate Factory sold $10,000 of candy on account to the University of Houston for a special event. When UH pays the bill, the transaction recorded on UH's books will:
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increase cash, decrease accounts receivable. |
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increase cash, decrease accounts payable. |
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decrease cash, increase accounts receivable. |
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decrease cash, decrease accounts payable. |
What is an unbilled or accrued revenue?
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Cash received from a customer after a service is billed. |
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Cash received from a customer before a service is billed. |
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A service performed for a customer before the service is billed and payment is received. |
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A service performed for a customer after the customer is billed. |
Adjusting entries:
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often include the Cash account. |
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are usually recorded at the beginning of the accounting period. |
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always involve at least one balance sheet account and one income statement account. |
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adjust the balance of credit and debit accounts to zero. |
In: Accounting