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oldhw 25 - alexander(jra2623 oldhomework 25 Turner(92510...

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alexander (jra2623) – oldhomework 25 – Turner – (92510) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points A 0 . 66 kg physics book with dimensions of 30 . 8 cm by 15 . 8 cm is on a table. What force does the book apply to the table? The acceleration of gravity is 9 . 8 m / s 2 . Correct answer: 6 . 468 N. Explanation: Let : m = 0 . 66 kg and g = 9 . 8 m / s 2 . The force is F = m g = (0 . 66 kg) (9 . 8 m / s 2 ) = 6 . 468 N . 002 (part 2 of 2) 10.0 points What pressure does the book apply? Correct answer: 132 . 911 Pa. Explanation: Let : = 30 . 8 cm and w = 15 . 8 cm . The pressure is P = F A = F ℓ w = 6 . 468 N (30 . 8 cm) (15 . 8 cm) · parenleftbigg 100 cm 1 m parenrightbigg 2 = 132 . 911 Pa . 003 10.0 points When an air bubble rises in water, what hap- pens to its mass, volume, and density? 1. Density doesn’t change; mass and volume increase. 2. Mass doesn’t change; volume increases and density decreases. correct 3. Density doesn’t change; mass and volume decrease. 4. Volume doesn’t change; mass and desnisty increase. 5. Volume doesn’t change; mass and density decrease. 6. Mass doesn’t change; volume decreases and density increases.

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oldhw 25 - alexander(jra2623 oldhomework 25 Turner(92510...

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