Quiz2BKey - Physics 135-3 Quiz#2B Key Spring 2008...

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S Power J s TAR P = × 553 10 30 . R = × 2 10 9 m I P R = = × 4 11 10 2 11 π . J s m 2 ( ) ( ) I S E c B c c B c B I c avg m o m o m o m o = = = = = = × 2 2 2 2 2 2 2 2 30 10 μ μ μ μ . T Physics 135-3 Quiz #2B Key Spring 2008 Instructions : Write your name on the back of this sheet & do your work on the front. 1. A light wave traveling in air is incident on a large chunk of glass. When the light enters the glass, which of the following properties of the wave do not change? Circle all that apply. Wavelength Speed Frequency 2. A spacecraft orbits a distant star. The distance between the spacecraft and the star is 2 million kilometers. The star emits energy into space at the rate of 5.53 × 10
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