# HW 1 - lie(el7352 HW01 markert(56480 This print-out should...

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lie (el7352) – HW01 – markert – (56480) 1 This print-out should have 21 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 4) 10.0 points How many significant figures are in 78 . 5 ± 0 . 1 m? 1. 6 2. 4 3. 2 4. 1 5. 5 6. 3 7. None of these 002 (part 2 of 4) 10.0 points How many significant figures are in 3 . 783 × 10 12 s? 1. 1 2. None of these 3. 5 4. 3 5. 6 6. 4 7. 2 003 (part 3 of 4) 10.0 points How many significant figures are in 3 . 58 × 10 20 kg? 1. 1 2. None of these 3. 2 4. 3 5. 6 6. 5 7. 4 004 (part 4 of 4) 10.0 points How many significant figures are in 0 . 0031 mm? 1. 1 2. 6 3. 3 4. 5 5. 4 6. None of these 7. 2 005 10.0 points Convert an acceleration of 4 . 9 mi / h / s to m / s 2 . Answer in units of m / s 2 . 006 (part 1 of 2) 10.0 points The elevators in the John Hancock building in Chicago move 987 ft in 18 s. What is their speed? Answer in units of m / s. 007 (part 2 of 2) 10.0 points What is this speed in miles per hour?

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