# Hw 1 with answers - reyes(mr29667 – Homework 1 –...

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Unformatted text preview: reyes (mr29667) – Homework 1 – chelikowsky – (59005) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A human hair is approximately 49 μ m in di- ameter. Express this diameter in meters. 1. 4 . 9 × 10 − 7 m 2. 4 . 9 × 10 6 m 3. 4 . 9 × 10 − 6 m 4. 4 . 9 × 10 − 5 m correct 5. 4 . 9 × 10 5 m 6. 4 . 9 × 10 7 m 7. None of these Explanation: Basic Concept: 1 μ m = 1 × 10 − 6 m Let: diameter = 49 μ m Solution: diameter = 49 μ m = ( 4 . 9 × 10 1 μ m ) · 1 × 10 − 6 m 1 μ m = 4 . 9 × 10 − 5 m keywords: 002 10.0 points The distance between the sun and the Earth is about 1 . 5059 × 10 11 m. Express this distance in kilometers. 1. 1 . 5059 × 10 6 km 2. 1 . 5059 × 10 10 km 3. 1 . 5059 × 10 8 km correct 4. 1 . 5059 × 10 11 km 5. 1 . 5059 × 10 7 km 6. None of these 7. 1 . 5059 × 10 9 km Explanation: Basic Concept: 1 km = 1 × 10 3 m Solution: distance = ( 1 . 5059 × 10 11 m ) · 1 km 1 × 10 3 m = 1 . 5059 × 10 8 km 003 10.0 points A certain corner of a room is selected as the origin of a rectangular coordinate system....
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## This note was uploaded on 07/24/2010 for the course PHY 59005 taught by Professor Chelikowsky during the Fall '09 term at University of Texas.

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Hw 1 with answers - reyes(mr29667 – Homework 1 –...

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