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Unformatted text preview: saliyev (is4663) Ch6-HW3 haley (56465) 1 This print-out should have 14 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 5.0 points A mass of 0 . 21 kg hangs from a vertical spring in the lab room. You grab hold of the mass and throw it vertically downward. The speed of the mass just after leaving your hand is 3 . 45 m / s . While the mass moved downward a distance of 0 . 07 m, how much work was done on the mass by the Earth? Use g = 9 . 8 m / s 2 . Answer in units of J 002 (part 2 of 2) 5.0 points The speed of the mass has decreased to 2 . 85 m / s. How much work was done on the mass by the spring? Answer in units of J 003 (part 1 of 6) 2.0 points A lithium nucleus has mass 5 . 1 10- 27 kg. If its speed is 0 . 993 c (that is, v/c = 0 . 993), what is the particle energy? Use c = 3 10 8 m / s....
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- Fall '07
- Sequences And Series