Let a(t) be the altitude in meters of a balloonist t minutes after liftoff. enter the exact answers. (a) find a formula for f(s), the altitude s seconds after liftoff. f(s)= meters (b) find a formula for g(h), the altitude h hours after liftoff. g(h)= meter

An object's buoyant force and weight mean the same thing. a. trueb. false

Give an example in which the electrical energy changes to light energy

Diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano. the piano moves upward, then stops, and then it starts to fall to the ground. which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force