Here is a complicated, simple machine – give it a go! If you apply a force of 86N to the handle of the car jack an you move it a total distance of 82m (up, down, up….) and the car jack is 13% efficient (87% of work in does not come out – lost as friction), how high (distanceout) did the jack lift the 5000N car? m (answer in 2 sig figs)

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600