Check all the answers that apply. Energy is the ability to A. Change temperature
B. Change speed
C. Do work
D. Change direction

Gam radio signals can usually be heard behind a hill, but fm often cannot. that is, am signals bend more than fm. explain. (radio signals, as we shall see, are carried by electromagnetic waves whose wavelength for am is typically 200 to 600 m and for fm about 3 m.)

Heat from the sun reaches earth to a. radiation b. convection c. conduction

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec