A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. In 5 minutes of operation of the engine, the heat rejected by the engine melts a mass of ice equal to 3.25×10−2 kg. Throughout this problem use Lf=3.34×105J/kg for the heat

A pot containing 1.70 kg of water is sitting on a hot stove, and the water is stirred violently by a mixer that does 6.40 kJ of mechanical work on the water. The temperature of the water rises by 4.00°C. What quantity of heat flowed into the water from the stove during the process? The specific heat of water is 4.186 kJ/kg·K.

Problem 2:   This problem compares the energy output and heat transfer to the environment by two different types of nuclear power stations—one with the normal efficiency of 36 %, and another with an improved efficiency of 47 %. Suppose both have the same heat transfer into the engine in one day, 2.5 × 1014 J  Part (a)  How much more electrical energy is produced by the more efficient power station?  Part (b)  What is the change in the heat transfer to the environment after the upgrade to the more efficient power station?

A steam boiler has a total volume of 4 m3. The boiler initially contains 3 m3 of liquid water and 1 m3 of equilibrium steam at 0.1 MPa. The boiler is turned on and heat is transmitted to the water and steam. Meanwhile, the inlet and outlet valves of the boiler remain closed. The safety valve escapes when the pressure reaches 5 MPa. How much heat is transmitted to the water and steam before I open the safety valve?

The first law of thermodynamics, ΔU = Q - W, when written as Q = W + ΔU, says that the heat into a system can be used to do work and/or increase the internal energy. Therefore, which process requires the most heat? Isobaric, isochoric, or adiabatic?

A gasoline engine takes in 1.61 * 10^4 Jof heat and delivers 3700 J of work per cycle. The heat is obtained byburning gasoline with a heat of combustion of 4.60 * 10^4 J/g. What mass of fuel is burned in each cycle?