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Unformatted text preview: fullwood (tf5349) – TEST 1 – Catala – (49033) 1 This printout should have 7 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points The mass of a solid cube is 1160 g, and each edge has a length of 4 . 67 cm. Find the density of the cube. Correct answer: 11389 . 6 kg / m 3 . Explanation: Let : m = 1160 g and L = 4 . 67 cm . Since 1 g = 10 − 3 kg and 1 cm = 10 − 2 m, and the density is ρ = m V = m L 3 = (1160 g) (4 . 67 cm) 3 · parenleftBig cm 10 − 2 m parenrightBig 3 parenleftbigg 10 − 3 kg g parenrightbigg = 11389 . 6 kg / m 3 . 002 (part 1 of 2) 10.0 points A particle undergoes three displacements. The first has a magnitude of 15 m and makes an angle of 39 ◦ with the positive x axis. The second has a magnitude of 7 . 7 m and makes an angle of 156 ◦ with the positive x axis. (see the figure below). After the third displacement the particle returns to its initial position. 156 ◦ 39 ◦ 1 5 m 7 . 7 m Find the magnitude of the third displace ment. Correct answer: 13 . 3947 m. Explanation: Given : bardbl vector A bardbl = 15 m , θ a = 39 ◦ , bardbl vector B bardbl = 7 . 7 m , and θ B = 156 ◦ ....
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This note was uploaded on 06/10/2010 for the course PHY 100 taught by Professor Pro.kiroshima during the Spring '10 term at Adelphi.
 Spring '10
 PRO.KIROSHIMA
 Mass

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