When a mirror with a fixed beam on it is rotated through a certain angle, the reflected beam is rotated through an angle that is
A) equal to the angle of rotation.
B) twice as large.
C) four times as large.
D) none of these
Answer: B
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Suppose Venus rotated as fast as Earth. How would this change its relative levels of volcanism, tectonics, and erosion?
a. All would remain the same—they are independent of rotationz b. All three would be higher. c. All three would be lower. d. Levels of volcanism and tectonics would stay the same, but erosion levels would be higher. e. Levels of volcanism and tectonics would be higher, and erosion levels would stay the same.
How much kinetic energy does a 0.30-kg stone have if it is thrown at
A) 290 J B) 580 J C) 440 J D) 510 J
If the efficiency of a Carnot engine were to be 100%, the cool reservoirs would have to be
A) at absolute zero. B) at 0°C. C) at 100°C. D) infinitely hot.
If the electric field is zero in some region of space is the electric potential zero there as well? Explain
What will be an ideal response?