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Physics, 04.02.2020 00:10 presleyann1902
Which statement best defines work? a. work is the time it takes to move an object once acted upon by a force. b. work occurs when balanced forces act on an object and cause movement in the direction of these forces. c. work occurs when a force causes motion of an object, and this motion is in the same direction of the applied force. d. work is the distance over time that an object moves once acted on by a force.
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Physics, 22.06.2019 21:20
People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina.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 2.05cm in front of the eye.)
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Which statement best defines work? a. work is the time it takes to move an object once acted upon b...
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