# rev11s11 - TA: Tomoyuki Nakayama Monday, April 4, 2011 PHY...

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TA: Tomoyuki Nakayama Monday, April 4, 2011 PHY 2048: Physics 1 with Calculus, Spring 2011 Review: Chapter 13.7-14.7 The purpose of this review is to refresh your memory. Physics is a cumulative subject, so make it sure you understand basic concepts and typical problem solving techniques in previous chapters before moving on to a new chapter! ________________________________________________________________________________ A. Kepler’s Laws A certain triple-star system consists of two stars each of mass m = 2.0 × 10 30 kg , revolving in the same circular orbit of radius r = 1.0 × 10 10 m around a certain star of mass M = 5.0 × 10 30 kg. The two orbiting stars are always at opposite ends of a diameter of the orbit. What is the period of revolution of the stars? B. Fluid in Equilibrium A 3-kg container holds 10 kg of water. A cube of edge length 0.1 m and mass 2 kg is suspended by a string and completely submerged in water. If the whole system is put on a spring scale, what is the reading of the scale?

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## This note was uploaded on 12/10/2011 for the course PHY 2048 taught by Professor Field during the Spring '08 term at University of Florida.

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rev11s11 - TA: Tomoyuki Nakayama Monday, April 4, 2011 PHY...

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