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Lecture18

# Lecture18 - What is the rest energy of the ball 1 0 J 2 25...

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Tuesday, February 20, 2007 7:48 PM f2008 Lecture 18 Work Page 1

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Q5.2.a: A ball whose mass is 2 kg travels at a velocity of < 0, –3, 4> m/s. What is the kinetic energy of the ball? 1) < 0, –6, 8 > J 2) < 0, –3, 4 > J 3) 2 J 4) 10 J 5) 25 J

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Q5.2.b: A ball whose mass is 2 kg travels at a velocity of < 0, –3, 4> m/s.

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Unformatted text preview: What is the rest energy of the ball? 1) 0 J 2) 25 J 3) 6e8 J 4) 9e16 J 5) 1.8e17 J Q5.2.c: Consider an electron (mass 9e-31 kg) moving with speed v = 0.9c. What is its rest energy? 1) 7.3e-31 J 2) 8.1e-14 J 3) 1.05e-13 J 4) 1.86e-13 J 5) 2.7e8 m/s Q5.2.d: Consider an electron (mass 9e-31 kg) moving with speed v = 0.9c. What is its total (particle) energy? 1) 7.3e-31 J 2) 8.1e-14 J 3) 1.05e-13 J 4) 1.86e-13 J 5) 2.7e8 m/s Q5.2.e: Consider an electron (mass 9e-31 kg) moving with speed v = 0.9c. Its rest energy is 0.8e-13 J, and its (total) particle energy is 1.86e-13 J. What is its kinetic energy? 1) 7.3e-31 J 2) 3.28e-14 J 3) 8.1e-14 J 4) 1.06e-13 J 5) 1.86e-13 J...
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Lecture18 - What is the rest energy of the ball 1 0 J 2 25...

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