If a body were in orbit very near the surface of the Earth, its centripetal acceleration would be

a. equal to g.
b. smaller than g.
c. larger than g.
d. dependent on its mass.
e. none of the above.


a

Physics & Space Science

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The ____________________ of the galaxy contains population I stars, open clusters, and gas clouds

Fill in the blank(s) with correct word

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A rocket explodes into two fragments, one 25 times heavier than the other. The magnitude of the momentum change of the lighter fragment is

A) 25 times as great as the momentum change of the heavier fragment. B) The same as the momentum change of the heavier fragment. C) 1/25 as great as the momentum change of the heavier fragment. D) 5 times as great as the momentum change of the heavier fragment. E) 1/4 as great as the momentum change of the heavier fragment.

Physics & Space Science

If the composition of the upper atmosphere were altered to permit a greater amount of terrestrial radiation to escape, Earth would be

A) cooler. B) warmer. C) quite unaffected. D) none of the above

Physics & Space Science

A 1.0-kg block is released from rest at the top of a frictionless incline that makes an angle of 37° with the horizontal. An unknown distance down the incline from the point of release, there is a spring with k = 200 N/m. It is observed that the mass is brought momentarily to rest after compressing the spring 0.20 m. How far does the mass slide from the point of release until it is brought

momentarily to rest? a. 0.98 m b. 0.68 m c. 0.82 m d. 0.55 m e. 0.20 m

Physics & Space Science