Physics, 05.10.2019 04:30 sweetiezylp8umho
Consider two small identical spheres of uniform density pm and radius r. the spheres are just touching each other and are at a distance d from a large planet with density pm and radius r (see figure 4). by equating the gravitational force of attraction between the touching spheres and the tidal force of the planet on the spheres, show that the spheres will be pulled apart by the planet's tidal forces if they venture closer than: pm r d~2.5(a) you may assume d 》 r 》 r. this is a good estimate of the planet's roche limit. the coefficient will change with the properties of the masses, but this is generally good enough b) estimate the roche limit for saturn and compare with the positions of saturn's rings use reasonable estimates for the densities of saturn and the particles composing its rings
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Physics, 21.06.2019 18:30
An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball
Answers: 1
Physics, 22.06.2019 04:00
Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.
Answers: 2
Consider two small identical spheres of uniform density pm and radius r. the spheres are just touchi...
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