In which sample water do the water particle have more energy: 5 grams of ice cubes at -10°c or 5 of a liquid water at 20°c?

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?

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)