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Physics, 22.06.2019 17:50
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
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Physics, 23.06.2019 10:30
How many minutes does light need to travel from the sun to jupiter?
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Physics, 23.06.2019 12:00
Which wave would cause destructive interference at every point of the wavelength and completely cancel out the wave?
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A student pulls a box 5.0 meters across a horizontal surface at a constant
speed of 4.0 meters per...
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