Describe how the Canadarm works. In which ways is the Canadarm like a human arm?

Compare and contrast the Saturn V rocket with a space shuttle.

Find the four second partial derivatives of the following functions.

A point is moving on the graph of $x^{3}+y^{2}=1$ in such a way that its y coordinate is always increasing at a rate of 2 units per second. At which point(s) is the x coordinate increasing at a rate of 1 unit per second?

Ahmed Company purchases all merchandise on credit. It recently budgeted the following month-end accounts payable balances and merchandise inventory balances. Cash payments on accounts payable during each month are expected to be: May, $1,600,000; June,$1,490,000; July, $1,425,000; and August,$1,495,000. Use the available information to compute the budgeted amounts of (1) merchandise purchases for June, July, and August and (2) cost of goods sold for June, July, and August.

$$\begin{matrix} & \text{Accounts Payable} & \text{Merchandise Inventory}\\ \text{May 31}\ldots\ldots\ldots & \text{\$150,000} & \text{\$250,000}\\ \text{June 30}\ldots\ldots\ldots & \text{200,000} & \text{400,000}\\ \text{July 31}\ldots\ldots\ldots & \text{235,000} & \text{300,000}\\ \text{August 31}\ldots\ldots\ldots & \text{195,000} & \text{330,000}\\ \end{matrix}$$

Which did you find easier to understand in a parallel circuit, voltage or current? What would you ask your teacher to help you understand the more challenging concept?

Indicate whether each of the statements is TRUE or FALSE. If you think the statement is false, rewrite it to make it true. Parallax is a method astronomers use to measure the temperatures of stars.

A solution at $25^{\circ} \mathrm{C}$ contains $1.0\ M\ \mathrm{Cu}^{2+}$ and $1.0 \times 10^{-4}\ M\ \mathrm{Ag}^{+}.$ Which metal will plate out first as the voltage is gradually increased when this solution is electrolyzed?

Consider the following reaction at $35^{\circ} \mathrm{C}:$

$$2 \mathrm{NOCl}(g) \rightleftharpoons 2 \mathrm{NO}(g)+\mathrm{Cl}_{2}(g)\ \Delta G^{\circ}=20 . \mathrm{kJ}$$

If 2.0 atm of NOCl are reacted in a rigid container at $35^{\circ} \mathrm{C},$ calculate the equilibrium partial pressure of NO.

Kelsey is preparing its master budget for the quarter ended September 30. Budgeted sales and cash payments for merchandise for the next three months follow:

$$\begin{matrix} \text{Budgeted} & \text{July} & \text{August} & \text{September}\\ \text{Sales} & \text{\$64,000} & \text{\$80,000} & \text{\$48,000}\\ \text{Cash payments for merchandise} & \text{40,400} & \text{33,600} & \text{34,400}\\ \end{matrix}$$

Sales are 20% cash and 80% on credit. All credit sales are collected in the month following the sale. The June 30 balance sheet includes balances of $15,000 in cash;$45,000 in accounts receivable; $4,500 in accounts payable; and a$5,000 balance in loans payable. A minimum cash balance of $15,000 is required. Loans are obtained at the end of any month when a cash shortage occurs. Interest is 1% per month based on the beginning-of-the-month loan balance and is paid at each month-end. If an excess balance of cash exists, loans are repaid at the end of the month. Operating expenses are paid in the month incurred and consist of sales commissions (10% of sales), office salaries ($4,000 per month), and rent ($6,500 per month). (1) Prepare a cash receipts budget for July, August, and September. (2) Prepare a cash budget for each of the months of July, August, and September. (Round all dollar amounts to the nearest whole dollar.)

Use a calculator in radian or degree mode, as appropriate, to find the value of each expression to four decimal places. $\tan 1$

A bar of length 2 is initially at $0^{\circ}$. From t = 0 on, the x = 0 end is held at $0^{\circ}$ and the x = 2 end at $100^{\circ}$. Find the time-dependent temperature distribution.

The molar enthalpy of vaporization of water at 373 K and 1.00 atm is 40.7 kJ/mol. What fraction of this energy is used to change the internal energy of the water, and what fraction is used to do work against the atmosphere?

Use the amounts shown on the contribution margin income statement below to compute the missing amounts denoted by letters a through n.

$$\begin{matrix} & \text{Company A} & \quad & \text{Company B}\\ \text{Number of units sold} \ldots\ldots\ldots& \text{a} & \quad & \text{1,975}\\ \quad & \text{Total} & \text{Per unit} & \text{Total} & \text{Per unit}\\ \text{Sales} \ldots\ldots\ldots& \text{\$208,000} & \text{\$65} & \text{h} & \text{i}\\ \text{Variable costs} \ldots\ldots\ldots& \text{150,400} & \text{b} & \text{\$39,500} & \text{j}\\ \text{Contribution margin}\ldots\ldots\ldots & \text{c} & \text{d} & \text{43,450} & \text{k}\\ \text{Fixed costs} \ldots\ldots\ldots& \text{e} & \text{f} & \text{19,750} & \text{l}\\ \text{Net income} \ldots\ldots\ldots& \text{\$ 46,400} & \text{g} & \text{m} & \text{n}\\ \end{matrix}$$