Physics, 23.07.2021 14:00, icantspeakengles
if you rub a ballon with wool or duster it can charge it negatively where do these extre charge come from?
Answers: 2
Physics, 22.06.2019 11:30, alexandroperez13
With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90
Answers: 1
if you rub a ballon with wool or duster it can charge it negatively where do these extre charge come...
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