Acrane does 9,500 j of work to lift a crate straight up using a force of 125 n. how high does the crane lift the crate? a 0.013 m b 76 m c 9,400 m d 1,200,000 m

When an object is heated it contracts. a. true b. false

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative

Which describes increasing the efficiency of energy resource