A. 70. All the following statements are true. Which one can be explained by Kepler's Second Law?
The Sun is not in the precise center of Saturn's orbit.
b. Earth is sightly closer to the Sun in January than in July
All the planets orbit the Sun in nearly the same plane.
d. Mars moves faster in its orbit when it is closer to the Sun than when it is farther from the Sun.
e. Venus orbits the Sun at a faster orbital speed than Earth.

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)