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Physics, 02.08.2019 10:30 roofroofmom
Which statement is true about gravitational forces? a. only large masses exert a gravitational force on small masses. b. only masses of equal size exert a gravitational force on each other. c. every mass exerts a gravitational force on every other mass. d. only moving masses exert a gravitational force on stationary masses.
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Physics, 22.06.2019 15:30, haha81
Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.
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