The earplug can reduce the sound level to about 18 decibels (dB). What percentage reduction is this intensity?

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

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?