Physics, 22.03.2021 20:00 Kiki18love
A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. The lift is performed in three stages, each requiring a vertical distance of 8.50 m: (a) the initially stationary spelunker is accelerated to a speed of 3.10 m/s; (b) he is then lifted at the constant speed of 3.10 m/s; (c) finally he is decelerated to zero speed. How much work is done on the 84.0 kg rescue by the force lifting him during each stage
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The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.
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Physics, 22.06.2019 13:50
The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?
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Physics, 22.06.2019 16:10
Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)
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Physics, 22.06.2019 18:50
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A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a mo...
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