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The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?
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Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.
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Physics, 22.06.2019 05:30
Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is
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Na + KCL -> K + NaCI reaction type...
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