Which statement is equivalent to Newton's first law? A. If no net force acts on an object, the motion of the object does not change. B. The force of an object is equal to the mass times its acceleration. C. The unit of force is the newton. D. For every action there is an equal and opposite reaction.

Calculate the heat capacity per object when the total energy is 4 quanta. (think of this in terms of increasing from 3.5 quanta of energy in the system to 4.5 quanta of energy in the system, if that were possible.) c4 = __ j/k/object

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.

Carbon 14 is a naturally occurring stable