How would the period of a planet depend on its orbital distance from a star? in this comparison,

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?