The goal of the bulb is to produce light. What is the efficiency of this bulb as it works to put out light?

A 100 kg runner has less momentum than a 150 kg runner while running with the same velocity. what can the 100 kg runner do to increase his momentum?

A scientist gives three trees of the same size and species different amounts of water all summer. He measures how fast the trees grow. What is the independent variable in this experiment? A.) The size of the trees B.) The growth rate of the trees C.

If a laptop of mass 1.4 kg is lifted to a table of height 0.8 m, how much gravitational potential energy is added to the laptop?

A ball is tossed straight up with an initial velocity of 13.6 m/s. A) how high will it go? B) how long is the ball in the air?

A meterstick is balanced on a fulcrum at its center. then a 240 n weight is placed 15 cm to the left of center. how many cm to the right of center would a 200 n weight need to be placed in order to balance the system?

A 70 kg boy is sitting 3 m from the ground in a tree. what is his gravitational potential energy

Which of the following describes the flow of charges through a wire or a conductor?

What is the kinetic energy of a 2 kg snowball thrown through the air at 5 m/s?

A 5.00*105-kg subway train is brought to a stop from a speed of 0.500 m/s in 0.400 m by a large spring bumper at the end of its track. what is the force constant k of the spring

A moving object always has energy in its?