Physics, 09.10.2019 02:10 RonGeffrard9597
Aperson is swimming in a river with a current that has speed vr with respect to the shore. the swimmer first swims downstream (i. e. in the direction of the current) at a constant speed, vs , with respect to the water. the swimmer travels a distance d in a time tout . the swimmer then changes direction to swim upstream (i. e. against the direction of the current) at a constant speed, vs , with respect to the water and returns to her original starting point (located a distance d from her turn-around point) in a time tin . 1) what is tout in terms of vr, vs, and d, as needed?
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World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s
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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
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Physics, 22.06.2019 14:00
This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.
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Aperson is swimming in a river with a current that has speed vr with respect to the shore. the swimm...
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