Author Question: The second law of thermodynamics implies that A) non-thermal forms of energy cannot be entirely ... (Read 79 times)

Metfan725 · **on:** Jul 29, 2018

The second law of thermodynamics implies that

A) non-thermal forms of energy cannot be entirely converted into thermal forms of energy.
B) thermal energy cannot be entirely converted into non-thermal forms of energy.
C) from the microscopic point of view, thermal energy is just kinetic energy of individual atoms and molecules.
D) in physical process in which heat is produced, the total amount of energy is reduced by an amount equal to amount of heat produced.
E) in every physical process, the total amount of energy must remain unchanged.

Question 2

An electromagnetic wave has a peak electric field of 3.0 kV/m. What is the intensity of the wave? (c = 3.0 108 m/s, 0 = 4 10-7 T m/A, 0 = 8.85 10-12 C2/N m2)

A) 24 kW/m2
B) 12 kW/m2
C) 8.0 kW/m2
D) 4.0 kW/m2