Physics Review Question Unit: Waves Year: 1991 Question#: 43 Question: To the nearest order of magnitude, how many times greater than the speed of sound is the speed of light. (1 ) 104 (2 ) 106 (3 ) 1010 (4 ) 1012 What is this question really asking? Explanation by: Eric D (partly) [ Return to question menu ] Answer 1 104 INCORRECT How does 3 x 102m/s compare to 3 x 108m/s? return to top Answer 2 106 CORRECT The speed of sound (3 x 102m/s) must be multiplied by 106 in order to get the speed of light (3 x 108m/s). return to top Answer 3 1010 INCORRECT How does 3 x 102m/s compare to 3 x 108m/s? return to top Answer 4 1012 INCORRECT How does 3 x 102m/s compare to 3 x 108m/s? return to top What's this question really asking? What is the speed of light divided by the speed of sound? (consult reference table for the values) return to top |
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