PHSCS 105 Midterm: BYU PHY 105 exam 1 - solutions

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7 Mar 2019
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Please write your cid__________ so that you can get your exam back. Radius of earth = 6. 38 106 m. Radius of earth"s orbit = 1. 496 1011 m. Linear exp. coeff. of copper: 17 10-6 / c. Linear exp. coeff. of steel: 11 10-6 / c. A handwritten 3 x 5 note card is allowed. G = 6. 67 10-11 n m2/kg2 kb = 1. 381 10-23 j/k. Mass of sun = 1. 991 1030 kg. Mass of earth = 5. 98 1024 kg. 1 mi/hr = 1 mph = 0. 44704 m/s. Write your cid at the top of the page, otherwise you may not get this exam booklet back. Circle your answers in this booklet if you wish to record them, but be sure to mark your answers on the bubble. Latent heat of melting (water): 3. 33 105 j/kg. Latent heat of boiling (water): 2. 26 106 j/kg. : 238 j/s m c vsound = 343 m/s at 20 c.