the height of mercury in the tube of a simple barometer is found to be 750mmHg. Calculate the atmospheric pressure in nm. take density of mercury as 13600kgm​

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

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?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec