A person weighing 645 N climbs up a ladder to a height of 4.55 m. 1. What work does the person do?
2. What is the increase in gravitational potential energy?
3. Where does the energy come from to cause this increase in ?
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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

What effect does the sun have on the earth. written response

Answer fast for how does the force exerted by two magnets change as the magnets are moved farther apart? the magnetic force increases. the magnetic force decreases. the magnetic force stays the same.