This painting shows a futuristic spacecraft powered by the detonation of small hydrogen bombs. If we actually had such a spacecraft, what would it allow us to do?

A) It would allow us to make a one-way trip to the nearest star besides the Sun in about a century.
B) It would allow us to travel roundtrip to almost anywhere in the Milky Way Galaxy in just a few years of ship time.
C) It would allow us to travel from Earth to Mars in less than an hour.
D) It would allow us to travel up to several times faster than the speed of light.


A) It would allow us to make a one-way trip to the nearest star besides the Sun in about a century.

Physics & Space Science

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The planet with Red Spot Junior is

a. Jupiter. b. Neptune. c. Uranus. d. Saturn. e. Mars.

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The Doppler Effect is a phenomenon that allows one to measure an object's:

A) temperature. B) radius. C) radial motion. D) tangential motion. E) chemical composition.

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When you drag a toy teddy bear along the floor by a force that is parallel to the floor, the magnitude of the force of friction

a. is independent of velocity or acceleration. b. increases when the velocity increases. c. is proportional to the acceleration. d. decreases when the force parallel to the floor increases. e. increases when the force parallel to the floor increases.

Physics & Space Science

A locomotive is pulling 19 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (with its load) is 37,000 kg

If the train is accelerating at 0.22 m/s2 on a level track, what is the tension in the coupling between the second and third cars? (The car nearest the locomotive is counted as the first car, and friction is negligible.)

Physics & Space Science