Physics, 20.10.2020 01:01 raishagibson

It took 50 joules to push a chair 5 meters across the floor. With what force was the chair pushed?

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Physics, 22.06.2019 02:40, SMURFETTE86

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Physics, 22.06.2019 08:00, hartzpeyton136

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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