Mrs. A is swinging her keys around in a circle on a string that is 0.5 m long. If she is swinging the keys at a tangential velocity of 3.7 m/s, what is the magnitude of keys' centripetal acceleration?

+15-35=-20

going in opposite directions

3. dark matter

empty space could also be a simple vacuum

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.