Radiation Pressure: Except for their color, a perfectly black (absorbing) object is identical to a perfectly white (reflecting) object. If identical light falls on both of these objects, what is true about the momentum they will receive from this light?
A. The black object will receive twice as much as the white object.
B. They will both receive the same amount.
C. The white object will receive twice as much as the black object.
D. The black object will receive four times as much as the white object.
E. The white object will receive four times as much as the black object.
Answer: C
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Consider the situation below. Object A is a metal sphere with zero net charge, and objects B and C are particles with the same negative charge. Which choice shown to the right best indicates the direction of the electric field at point P? (If you are using the letters on the back cover to indicate your answer, you can indicate the double-letter choices by pointing to a letter with two fingers.)
A. A
B. B
C. C
D. D
E. Zero
F. AA
G. BB
H. CC
I. DD
Explain why stars form only in molecular clouds, the coldest, densest parts of the interstellar medium
What will be an ideal response?
When you throw a stone horizontally from the top of a cliff at 10 m/s, one second after leaving your hand its vertical distance below the top of the cliff is
1) 5 m. 2) 10 m. 3) 15 m. And its speed at that instant is 4) 10 m/s. 5) about 14 m/s. 6) 15 m/s. 7) greater than 15 m/s.
Obtaining a prescription for penicillin for your roommate because she doesn’t have a primary care physician is an example of ____.
(A) drug diversion (B) drug abuse (C) drug dependence (D) antabuse (E) drug misuse