Sound waves are also called compression waves. this means that as the wave travels through air, the increases and decreases. motion energy light pressure

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.