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Physics Frequency and Wave?
1) What is the frequency of high energy ultraviolet radiation with a wave length of 125 nm?
(1 nm = 1 x 10^-9 m)
2) You shoot a laser beam at the moon and see the reflected beam 2.56 seconds later. How far away is the moon?
1 Answer
- Anonymous8 years agoFavorite Answer
light travels at about 3e8 metres per second in a vacuum so if that is where your wavelength was measured the frequency will be 3e8/125e-9 Hz
The moon is roughly 1.28 light seconds away.