Which notation is used to represent an alpha particle? a. b. c. d.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

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?

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?