Physics, 29.07.2019 18:20 Playboycxm
A5.05-kg black cat and her four black kittens, each with mass 0.768 kg, sleep snuggled together on a mat on a cool night, with their bodies forming a hemisphere. assume the hemisphere has a surface temperature of 31.8°c, an emissivity of 0.970, and a uniform density of 1055 kg/m3. (a) find the radius of the hemisphere. m (b) find the area of its curved surface. m2 (c) find the radiated power emitted by the cats at their curved surface. w (d) find the intensity of radiation at this surface. you may think of the emitted electromagnetic wave as having a single predominant frequency. w/m2 (e) find the amplitude of the electric field in the electromagnetic wave just outside the surface of the cozy pile. n/c (f) find the amplitude of the magnetic field. µt (g) the next night, the kittens all sleep alone, curling up into separate hemispheres like their mother. find the total radiated power of the family. (for simplicity, ignore the cats' absorption of radiation from the environment.) w
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Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?
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An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.
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A5.05-kg black cat and her four black kittens, each with mass 0.768 kg, sleep snuggled together on a...
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