Molecular Physics | Thermodynamics Answers

0.5 kg aluminium block is heated to 1000C and quickly placed into a beaker which contains water at 400C. If the final temperature of the system is 440C and specific heat of aluminium is 900 J/kg0C, calculate the mass of water

0.2 kg coffee at 900C is placed on beaker (specific heat of beaker is 700 J/kg0C) at 200C. the final temperature of the system is 760C. Calculate the mass of the beaker

Explain the concept and importance of a thermodynamic cycle.

An Otto cycle operates on 1lb/s of air from 15 psia and 130 F at the beginning of

compression. The temperature at the end of combustion is 5,000 R; compression ratio is 5.5. for

hot-air standard k=1.32. find (a) T4, OR; (b)P4, psia; (c) Qr, BTU/s; (d) thermal efficiency, and (e)

work net in horsepower.

A Carnot engine operating between 527C and 27 C produces 600KW of work. Determine,

(a) Qa, KW; (b) Qr, KW; (c) ΔS during heat rejection, KW/K and (d) thermal efficiency of the cycle.

The resistance of a resistance thermometer at the ice point is 40 Ω. Its resistance at temperatures T1 and T2 are 48 Ω and 53.2 Ω respectively. What is the ratio of T2 and T1?

A Carnot engine operating between 527C and 27 C produces 600KW of work. Determine,

(a) Qa, KW; (b) Qr, KW; (c) ΔS during heat rejection, KW/K and (d) thermal efficiency of the cycle.

Two mole of an ideal gas is heated at a constant pressure of 101.3K Nm^-2 from 273.2 K to 373K. Calculate, in Joules, the work involved

The temperature of an ideal gas remains constant while the absolute pressure changes from 103.4 kPaa to 827.2 kPaa. (a) If the initial volume is 80 liter, what is the final volume? (b) for 160 gram of the gas, determine the change of density.

4kg of water at 50°C is poured on a large block of ice at 0°C. How much I've melts. Specific heat capacity of water= 4200J/Kg/°C. Latent heat of fusion of ice= 3.33x10^5J