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PHY2048_Fall09_Homework_Set1

# PHY2048_Fall09_Homework_Set1 - PHY2048 Fall 2009 Homework...

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PHY2048 Fall 2009 Homework Set 1 Solutions University of Florida Page 1 of 3 Department of Physics PHY 2048 Homework Set 1 Solutions (Chapters 1 & 2) Problem 1-1*: We are given that 1 micron = 1 μ m = 10 -6 m. Hence, (a) m m m km m km km km μ μ 9 6 3 10 10 1 0 . 1 10 ) 0 . 1 ( 1 1 ) 0 . 1 ( 0 . 1 = × × = × × = (b) cm m cm m m m m m 4 2 6 10 10 1 1 10 ) 0 . 1 ( 1 1 ) 0 . 1 ( 0 . 1 = × × = × × = μ μ μ μ (c) m m m ft m yd ft yd yd yd μ μ 5 6 10 15 . 9 10 1 28 . 3 1 0 . 1 3 ) 0 . 1 ( 1 1 1 ) 0 . 1 ( 0 . 1 × = × × × = × × × = I used the following: = = m m m m μ μ 1 10 10 1 1 6 6 , = km m 0 . 1 10 1 3 , = m cm 2 10 1 1 , = yd ft 0 . 1 3 1 , = ft m 28 . 3 1 1 . Problem 1-5*: We are given the radius of the earth, R E = 6.37 × 10 6 m. Hence, (a) km m km m R C E 4 3 6 10 00 . 4 10 0 . 1 ) 10 37 . 6 ( ) 14159 . 3 ( 2 2 × = × × × × = = π (b) 2 8 2 3 2 6 2 10 10 . 5 10 0 . 1 ) 10 37 . 6 ( ) 14159 . 3 ( 4 4 km m km m R A E × = × × × × = = π (c) 3 12 3 3 3 6 3 4 3 3 4 10 08 . 1 10 0 . 1 ) 10 37 . 6 ( ) 14159 . 3 ( km m km m R V E

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