What voltage is applied to a 20 ohm fixed resistor if the current through the resistor is 1.5 amps?

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 =

Do you think you could give me the answers to #29?