The escape velocity at the suface of Eart is approximately 11 km/s. WHat is the mass, in units of Me of a planet with twice the radisu of Earth for which the escape speed is twice that for Earth

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.