A horse-power is equal to 550
A) J/s.
B) Kw-h.
C) ft-lb/minute.
D) ft-lb/s.
E) J/hour.
D
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How long can a four-solar-mass star live?
a. 1 solar lifetime b. 0.03125 solar lifetimes c. 3 solar lifetimes d. None of the other choices are correct.
A 10-N block and a 1-N block lie on a horizontal frictionless table. To impart equal horizontal accelerations, we would have to push the heavier block with
A) an equal force. B) 10 times as much force. C) 10 squared or 100 times as much force. D) 1/10 as much force. E) none of the above
An aircraft approaches a runway that runs directly east as a strong wind blows out of the south. The direction that the aircraft should point in order to land on the runway is
a. north b. east of north c. east d. south of east e. south
A TEM is a nonoptical microscope. What does TEM stand for?
A. transverse electron magnifier B. telescopic emulation machine C. triple emission magnifier D. transmission electron microscope E. none of these answers are correct