Jeannine spent the following amounts on transportation for 3 months: $\$ 330$, $\$ 285.96$, and $\$ 553.22$. What is her average monthly transportation expense?

Compare the wavelength shift of a photon scattered by a free electron to that of a photon scattered at the same angle by a free proton.

Write a program that calculates the cost per square inch of a circular pizza, given its diameter and price. The formula for area is $A=\pi r^{2}$

Beta Watches completed the following selected transactions during 2016 and 2017 :

2016 Dec. 31. Estimated that bad debts expense for the year was 3% of credit sales of $400,000 and recorded that amount as expense. The company uses the allowance method. 31. Made the closing entry for bad debts expense. 2017 Jan. 17. Sold merchandise inventory to Marty Viller,$900, on account. Ignore Cost of Goods Sold. Jun. 29. Wrote off Marty Viller's account as uncollectible after repeated efforts to collect from him. Aug. 6. Received $900 from Marty Viller, along with a letter apologizing for being so late. Reinstated Viller's account in full and recorded the cash receipt. Dec. 31. Made a compound entry to write off the following accounts as uncollectible: Bob Keffer,$1,900; Mary Martin, $1,000; and Robert Ronson,$ 400. 31 Estimated that bad debts expense for the year was 3% on credit sales of $500,000 and recorded the expense. 31 Made the closing entry for bad debts expense.

Requirements

1. Open T-accounts for Allowance for Bad Debts and Bad Debts Expense. Keep running balances, assuming all accounts begin with a zero balance.
2. Record the transactions in the general journal, and post to the two T-accounts.
3. Assume the December 31, 2017, balance of Accounts Receivable is$ 131,000. Show how net accounts receivable would be reported on the balance sheet at that date.

(The data for this exercise is available at the text website: www._mbhe.com/lind16e.)

Refer to the Baseball 2012 data, which include information on the 2012 Major League Baseball season. The data also include the mean player salary since 1989.

a. Use the year 2000 salary as the base period and 100 as the base value to develop a simple index for the years since 2000. By what percent has the typical salary increased?

b. The Consumer Price Index values for 2001 , 2003, 2011, and 2012 are 177.1, 184.0, 224.94, and 229.594, respectively. What are the average player's real (or deflated} salaries for those years? Describe the trend in the deflated salaries in a few sentences. Compare these results with your reply in part (a).

A point is selected at random from the bounded region between the curves $y=$ $x^2-1$ and $y=1-x^2$. Let X be the x-coordinate, and let Y be the y-coordinate of the point selected. Determine if X and Y are independent.

A thin silver wire has length L = 18 cm when the temperature is

$$T = 30^{\circ}C.$$

Estimate

$$\Delta L$$

when T decreases to

$$25 ^ { \circ } \mathrm { C }$$

if the coefficient of thermal expansion is

$$k = 1.9 \times 10 ^ { - 5 \circ } \mathrm { C } ^ { - 1 }.$$

Baton Company estimates that the amounts for total depreciation expense for the year ending December 31 will be $120,000 and for year-end bonuses to employees will be$200,000. What total balance of expense relating to these two items should Baton report in its quarterly income statement for the three months ended March 31?

a. $0
b.$30,000
c. $50,000
d.$80,000

Lockard Company purchased machinery on January 1, 2012, for $80,000. The machinery is estimated to have a salvage value of$8,000 after a useful life of 8 years. (a) Compute 2012 depreciation expense using the sum-of-the years’-digits method. (b) Compute 2012 depreciation expense using the sum-of-the-years’-digits method assuming the machinery was purchased on April 1, 2012.

(II) A uniform rectangular plate of length $l$ and width $w$ has a coefficient of linear expansion $\alpha$. Show that, if we neglect very small quantities, the change in area of the plate due to a temperature change $\Delta{T}$ is $\Delta{A} = 2 \alpha l w \Delta{T}.$ See Fig. 17-21.

Provide examples of how memory for a word can increase by organizing information.

In analogy with the thermal conductivity, derive an approximate formula for the diffusion coefficient of an ideal gas in terms of the mean free path and the average thermal speed. Evaluate your formula numerically for air at room temperature and atmospheric pressure, and compare to the experimental value. How does D depend on T, at fixed pressure?

Consider a $800$-$\mathrm{W}$ iron whose base plate is made of $0.5$-$\mathrm{cm}$-thick aluminum alloy $20218$-$\mathrm{T} 6\left(\rho=2770 \mathrm{~kg} / \mathrm{m}^3\right.$, ip $\left.=875 \mathrm{~J} / \mathrm{kg} \cdot \mathrm{K}, \alpha=7.3 \times 10^{-5} \mathrm{~m}^2 / \mathrm{s}\right)$. The base plate has a urface area of $0.03 \mathrm{~m}^2$. Initially, the iron is in thermal equibrium with the ambient air at $22^{\circ} \mathrm{C}$. Taking the heat transfer oefficient at the surface of the base plate to be $12 \mathrm{~W} / \mathrm{m}^2 \cdot \mathrm{K}$ ind assuming $85$ percent of the heat generated in the resisance wires is transferred to the plate. Using EES (or other) software, investigate the effects of the heat transfer coefficient and the final plate temperature on the time it will take for the plate to reach this temperature. Let the heat transfer coefficient vary from $5 \mathrm{~W} / \mathrm{m}^2 \cdot \mathrm{K}$ to $25 \mathrm{~W} / \mathrm{m}^2 \cdot \mathrm{K}$ and the temperature from $30^{\circ} \mathrm{C}$ to $200^{\circ} \mathrm{C}$. Plot the time as functions of the heat transfer coefficient and the temperature, and discuss the results.

What would be good thesis ideas for a compare and contrast essay?