If 3,600 j of work is done in 3.0 s, what is the power? a 0.00083 w b 1,200 w c 3,600 w d 11,000 w

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

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?