In order to have good physical fitness, you . A. should be able to complete daily tasks without being physically taxed B. must be able to run a 4-minute mile C. need to work out at the gym four times a week D. don't need to worry about eating healthy foods

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

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