You use an inclined plane to move furniture into a truck. You perform 105 kJ of work, but only do 88 kJ of useful work. What is the efficiency of the inclined plane?

Researchers condition a flatworm to contract when exposed to light by repeatedly pairing the light with electric shock. the electric shock is a (n)

True or False: The Q value (the RBE) for alpha particles is higher than the Q value of neutrons and beta particles.?

How does the viscosity of a liquid affect the definition of a liquid?

A ballplayer standing at home plate hits a baseball that is caught by another player at the same height above the ground from which it was hit. The ball is hit with an initial velocity of 32.1 m/s at an angle of 60.0° above the horizontal.

At a certain instant after jumping from the airplane A, a skydiver B is in the position shown and has reached a terminal (constant) speed vB = 52 m/s.

You short-circuit a 9 volt battery by connecting a short wire from one end of the battery to the other end. if the current in the short circuit is measured to be 18 amperes, what is the internal resistance of the battery?

A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as well. Which of the following formulas can be used to calculate the volume of the ball?

Is there such a thing as real time weather radar? why not?

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.

A force produces power p by doing work w in a time t. what power will be produced by a force that does six times as much work in half as much time?