When the molecules in a body move with increased speed, it's possible that the body will change from a?
a. liquid to a gas
b. gas to a solid
c. liquid to a solid
d. gas to a liquid

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

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

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic