19. An object of mass 20 kg is dropped on a spring wh- ich is placed 5 m below. If the spring has a force
constant of 5 x 104 Nm, the maudimum compressi-
on of the spring is
A 10 m B.0.5 m C.0.2 m D.0.04 m​

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system