Molecular Physics | Thermodynamics Answers

Explain temperature in simple words.

If 150cm3 of steam at 100∘C is added to 250cm3 water at 40∘C, how much steam(in cm3) is condensed into water at 100∘C?

The moment of inertia of slim rod about a transverse axis through one
end is M(L^2)/3, where M is the mass of the rod and L its length, and L^2 is L
squared. What is the moment of inertia of the same rod if we choose a new
parallel axis at a distance of L/3 from the original axis?

What is surface tension.

Waht is heat capacity.

What is specific heat.

A 800N man is playing on a seesaw with son who has a weight of 200N. If the child is sitting 3 meters away, how far will the man have to sit to balance the seesaw?

Hoover Dam is a megastructure located at the border between the U.S. states of Nevada and Arizona. The dam started its operation from 1936 until now. To distribute 4.2 TW/h power to California, Arizona and some parts in Nevada, the dam is operated by two types of turbines: Francis-type and Pelton-type. Your task is to relate the operation of the dam with thermodynamics using relevant assumptions. You might want to include the thermodynamics law applied in the whole dam’s operation and calculation of work produced by both turbines.

In the compression stroke of a gas engine the work done on the gas by the piston is 70 kJ/kg and the heat rejected to the cooling water is 42 kJ/kg.
Estimate the change of specific internal energy stating whether it is a gain or a loss.