The escape velocity of an object depends on I. the mass of that object. II. the mass of the object trying to escape. III. the distance from the center of the object and the escaping object. IV. the speed of light
a. I, II, III, & IV
b. I & II
c. I & III
d. I, II, & IV
e. I, III, & IV
C
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Escape Speed: Planet A has twice the mass of Planet B. From this information, what can we conclude about the escape speed for Planet A compared to that of Planet B?
A. The escape speed for Planet A must be twice as great as the escape speed from Planet B. B. The escape speed for Planet A must be four times as great as the escape speed from Planet B. C. The escape speed for Planet A is the same as the escape speed from Planet B. D. The escape speed for Planet A is greater than the escape speed from Planet B, but we cannot say how much greater. E. We cannot conclude anything about the escape speed for Planet A without knowing the radii of the two planets.
A mass of 5 kg is released from rest on a smooth incline making an angle of 37° to the horizontal. The tangential component of acceleration is closest to:
1.10 m/s²
2.8 m/s²
3.6 m/s²
4.4 m/s²
5.2 m/s²
6.0 m/s²
7.Exactly halfway between 2 of the above answers
8.The negative of one of the answers above
9.It is impossible to determine the tangential component of the block's acceleration
10.I do not know what is meant by "tangential" in this situation
A heat engine takes in 500 J of energy from the hot reservoir in one cycle while performing 100 J of work. The amount of heat transferred to the cold reservoir in the same time is
A. 400 J. B. zero. C. 500 J. D. 300 J. E. 200 J.
The planet's orbital period is
A) the time it takes it to rotate and have the same face toward us again. B) the time it takes to return to the same location in the sky, relative to the Sun. C) the time it takes for a satellite to orbit it. D) the time it takes for it to retrograde back to the same position as we pass it. E) the time its magnetic field takes to spin once.