The time averaged intensity of a propagating plane wave in vacuum is 1,200 watts/m2. What force will this light exert on a flat, square surface that is 10 cm on each side?   a. 4.0 x 10-8 N   b. 3.6 x 10-8 N   c. 3.2 x 10-8 N   d. 2.8 x 10-8 N   e. 2.4 x 10-8 N

University Physics Volume 1
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Chapter17: Sound
Section: Chapter Questions
Problem 129AP: A 0.80-m-long tube is opened at both ends. The air temperature is 26°C. The air in the tube is...
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  1. The time averaged intensity of a propagating plane wave in vacuum is 1,200 watts/m2. What force will this light exert on a flat, square surface that is 10 cm on each side?

      a.

    4.0 x 10-8 N

      b.

    3.6 x 10-8 N

      c.

    3.2 x 10-8 N

      d.

    2.8 x 10-8 N

      e.

    2.4 x 10-8 N

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