Three different-mass projectiles are launched from the top of a building each at different angles of elevation. Each particle has the same initial kinetic energy. Which particle has the greatest kinetic energy just as it impacts with the ground?

a. The one launched at the highest angle of elevation.
b. The one with the highest mass.
c. The one with the lowest mass.
d. They all will have the same kinetic energy on impact.


b

Physics & Space Science

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Orbital resonance also gives Europa an elliptical orbit, so it experiences tidal heating, too. However, Europa experiences less tidal heating than Io, because Europa __________ than Io.

a. is farther from Jupiter b. is much smaller c. is more perfectly spherical in shape d. contains much more ice

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What year was hubble put into orbit?

What will be an ideal response?

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Assume that the average mass of each of the approximately 1 billion people in China is 55 kg. Assume that they all gather in one place and climb to the top of 2 m high ladders. The center of mass of the Earth (mE = 5.90 1024 kg) is then displaced

a. 0 m. b. 1.84 × 10^?23 m. c. 1.84 × 10^?14 m. d. 1.80 × 10^?13 m. e. 2 m.

Physics & Space Science

Visible light coming from the Sun is a combination of all colors called ________ light.

A. spectral B. white C. ultraviolet D. visible E. yellow

Physics & Space Science