A 2300 kg car slows at a rate of -3.0 m/s/s. Calculate the magnitude of the net force acting on the car as it slows down. Hint: magnitude means drop the negative.

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?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?