A calorimeter of mass 60 g contains 180 g of water at 29°C. Calculate the common final equilibrium temperature of the mixture if 37.2 g of ice at - 10°C is added to it. Specific
heats are given as follows: ice = 2108 J/kg. K, calorimeter = 0.42 J/g.°C, water =
4186J/kg.°C and latent heat of fusion for ice is 333 kJ/kg.

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each