You lift a book slowly from the floor to the table. You then lift an identical book rapidly from the floor to the table. Compared with the slow process, in the faster process your
A) work done is greater.
B) energy output [i.e., amount of energy transformed into gravitational energy] is greater.
C) Both of the above are correct.
D) power output is greater.
E) All of the above are correct.
D
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Which of the following is believed to have played a major role in the condensation process predicted by the condensation theory?
a. Dust b. Temperature c. Retrograde motion d. Protosuns
Movement of the lithosphere
A) has a plastic-like flow. B) causes earthquakes and volcanic activity. C) has a leisurely pace and allows the formation of gentle rolling hills. D) is intermittent.
Approximately how long did the nucleosynthesis era last?
A) 10-10 seconds B) 5 years C) 5 minutes D) 0.001 seconds E) 5 seconds
When a simple machine multiplies force, it decreases
A) potential energy. B) distance moved. C) both of these D) none of the above