Molecular Physics | Thermodynamics Answers

A) Consider a country with a population of 20 million people. Suppose we need 200,000 MJ/person each year to support a satisfactory UN Human Development Index. How much energy (in MJ) is needed each year by the country? 

B) How much power (in MW) is required?

C) How many 1000 MW power plants are needed?

D) How much energy (in MJ) is needed each day?

E) Suppose the energy is obtained by consuming crude oil with an energy density of 37,000 MJ/m3. How many barrels of crude oil are required each day?

An ideal gas slowly expanded from 2m3 to 3m3 at a constant temperature of 30degrees Celsius. The entropy change of the gas was +47j/k during the process. How much heat was added to the gas during the process? Ii) how much work did the gas do during the process?

Consider a car that moves with a thermal power consumption of 100,000 W. Express the thermal power consumption in horsepower.

a constant volume gas thermometer exerts an absolute pressure of 1000Pa at room temperature. if the pressure has been increased to 1500Pa. what will be the new temperature?

a quantity of low density gas in rigid container is initially at room temperature ( 20 degrees C ) and a presure of 15 kpa. what will be the pressure if the temperature increase thrice its initial temperature?