Author Question: In an electromagnetic wave in free space, the field and fields are A) parallel to one another and ... (Read 77 times)

leilurhhh · **on:** Jul 29, 2018

In an electromagnetic wave in free space, the field and fields are

A) parallel to one another and perpendicular to the direction of wave propagation.
B) parallel to one another and parallel to the direction of wave propagation.
C) perpendicular to one another and perpendicular to the direction of wave propagation.
D) perpendicular to one another and parallel to the direction of wave propagation.

Question 2

An ideal Carnot engine is operated as a thermodynamic pump to heat a room in the winter.

The thermodynamic pump delivers thermal energy to the room at the rate of 47 kJ per second and maintains the room at a temperature of 293 K when the outside temperature is 237 K. The power requirement to run the thermodynamic pump under these operating conditions is closest to A) 9000 W.
B) 7100 W.
C) 20,000 W.
D) 15,000 W.
E) 11,000 W.