If it takes 320 n of force to push a box up a ramp, yet it would take 1,600 n of force to lift the box straight up, what is the mechanical advantage of the ramp? o a. 0.2 o b. 4 o c. 5 o d. 40

An asteroid is discovered in a nearly circular orbit around the sun, with an orbital radius that is 2.47 times earth's. what is the asteroid's orbital period, its "year," in terms of earth years?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

Gunpowder residue is most likely to show up where on a shooters hands