The process that keeps heat from being transferred between two substances is a) conduction. b) convection. c) insulation. d) radiation.

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

Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain