If a liter of water is heated from 20 c to 50 c, what happens to its volume? a. the volume decreases. b. the volume increases. c. the volume first increases, then decreases. d. the volume first decreases, then increases, select the best answer from the choices provided

Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.