A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.00 
acquires an angular velocity of 5.00 rad/sec. The CD continues rotating at 5.00 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration. What is the total acceleration of a point 4.00 cm from the center at the time 30.0 seconds from the start?
A. 0.0650 
B. 0.0522
C. 0.0444
D. 0.0324
E. 0.0243
D. 0.0324
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A 1500-W heater is connected to a 120-V line. How much heat energy does it produce in 2.0 hours?
A) 1.5 kJ B) 3.0 kJ C) 0.18 MJ D) 11 MJ E) 18 MJ
The darker-colored bands in Jupiter's atmosphere are ________.
A. moving downward B. lower in altitude than the lighter-colored bands C. transparent, relative to the lighter-colored bands D. warmer than the lighter-colored bands E. All of these choices are correct.
Constant Angular Acceleration: In the figure, point P is on the rim of a wheel of radius 2.0 m. At time t = 0, the wheel is at rest, and P is on the x-axis. The wheel undergoes a uniform counterclockwise angular acceleration of 0.010 rad/s2 about the center O.(a) At time t = 0, what is the tangential acceleration of P?(b) What is the linear speed of P when it reaches the y-axis?(c) What is the magnitude of the net linear acceleration of P when it reaches the y-axis?(d) How long after starting does it take for P to return to its original position on the x-axis?
What will be an ideal response?
Chapter 1 contains a quotation by author Norman Mailer from his book Of a Fire on the Moon. Mailer's point is that
A) quantum theory shows that the universe is infinitely deep and subtle. B) physics professors are a bunch of crackpots. C) with the help of science and technology, we are solving most of the world's social problems. D) science is leading us toward a greater understanding of the important truths in life. E) science and technology give us power over nature but our culture we don't know how to use that power.