In the days before compact discs and MP3 players (ancient history!), music was recorded in scratches in the surface of vinyl-coated disks called records. In a typical record player, the record rotated with a period of $1.8 \mathrm{~s}$. Find the centripetal acceleration of a point on the edge of the record. Assume a radius of $15 \mathrm{~cm}$.

Give an example of motion in which (a) the magnitude of the instantaneous velocity is always larger than the average velocity and (b) the instantaneous velocity is never parallel to the instantaneous acceleration.

A bicycle wheel of radius $0.30 \mathrm{~m}$ is spinning at a rate of $60$ revolutions per minute.

(a) What is the centripetal acceleration of a point on the edge of the wheel?

(b) What is the period of the wheel's motion?

A bicycle wheel of radius $0.30 \mathrm{~m}$ is spinning at a rate of $60$ revolutions per minute.

(a) What is the centripetal acceleration of a point on the edge of the wheel?

(b) What is the period of the wheel's motion?

Governments throughout history have levied some very interesting taxes. Each of the following taxes changed citizens' behavior. Determine whether it's likely that the tax also addressed a market failure.

d. The Cowardice Tax: Introduced in medieval England and applied to people who refused to defend the country at the request of the king.

Write C++ statements that do the following:

a. Define an enum type, bookType, with the values MATH, CSC, ENGLISH, HISTORY, PHYSICS, and PHILOSOPHY. b. Declare a variable book of type bookType. c. Assign Math to the variable book. d. Advance book to the next value in the list. e. Output the value of the variable book.

Casebolt Company wrote off the following accounts receivable as uncollectible for the first year of its operations ending December 31, 2014:

$$\begin{array}{lr} \text { Customer } & \text { Amount } \\ \hline \text { Shawn Brooke } & \$ 4,650 \\ \text { Eve Denton } & 5,180 \\ \text { Art Malloy } & 11,050 \\ \text { Cassie Yost } & 9,120 \\ \text { Total } & \$ 30,000 \\ \hline \end{array}$$

A photographer is taking a picture of a three-foot-tall painting hung in an art gallery. The camera lens is $1$ foot below the lower edge of the painting (see figure). The angle $\beta$ subtended by the camera lens $x$ feet from the painting is $\beta=\arctan[3x/(x^2+4)],x>0.\newline$ Move the cursor along the graph to approximate the distance from the picture when $\beta$ is maximum.

The United States raised the tariff on glossy paper imports from China to 99.65 percent, as a result of complaints by newPage Corp. of Dayton, Ohio. Imports from China increased 166 percent from 2005 to 2006. This glossy paper is used in art books, high-end magazines, and textbooks.

What is dumping? Who in the United States loses from China’s dumping of glossy paper?

Base your answers on the reading "Español, el idioma del futuro." The main idea of this article is to A. give a brief history of the Spanish language. B. explain where the reader can study Spanish. c. describe the growing importance of the Spanish language. d. give an overview of the most popular world languages.

Dropped by one or more stores selling expensive art. Report on the sales techniques used (point of-purchase displays, store design, salesperson comments, and so forth). What beliefs about consumer behavior appear to underlie these techniques? It is often worthwhile for a male and a female student to visit the same store and talk to the same salesperson at different times. The variation in salesperson behavior is sometimes quite revealing.

Identify the part of speech of each italicized word in the following sentences. If the word is used as an adjective or an adverb, tell what word or words it modifies.

Example:The Mexican artist Diego Rivera was a remarkably talented muralist.

Mexican—adjective—artist remarkably—adverb—talented muralist—noun

In 1907, with the proceeds from his first art show, he made the first of several lengthy visits to Europe.

BUSINESS: Appreciation A 20,000 dollars art collection is increasing in value at the rate of $300 \sqrt{t}$ dollars per year after t years.

a. Find a formula for its value after t years. [Hint: Evaluate C so that its value at time t=0 is 20,000 dollars.]

b. Use the formula that you found in part (a) to find its value after 25 years.