The motion of a car on a position-time graph is represented with a horizontal line. what does this indicate about the car’s motion? a. it’s not moving. b. it’s moving at a constant speed. c. it’s moving at a constant velocity. d. it’s speeding up.

Newton's law of universal gravitation states that the force f between two masses, m1 and m2, is given below, where g is a constant and d is the distance between the masses. find an equation that gives an instantaneous rate of change of f with respect to d. (assume m1 and m2 represent moving points.)

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel

How are positive ions different from neutral atoms