This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A totally absorbing surface having an area of 7.7 cm2 faces a small source of sinusoidal ... (Read 53 times)

ghost!

  • Hero Member
  • *****
  • Posts: 560
on: Jul 29, 2018
A totally absorbing surface having an area of 7.7 cm2 faces a small source of sinusoidal electromagnetic radiation that is 2.4 m away.
 
  At the surface, the electric field amplitude of the radiation is 84 V/m. (c = 3.00  108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)
  (a) What is the radiation pressure exerted on the surface?
  (b) What is the total power output of the source, if it is assumed to radiate uniformly in all directions?

Question 2

In a thermodynamic process involving 7.8 moles of an ideal gas, the gas is at an initial temperature of 24C and has an initial volume of 0.040 m3.
 
  The gas expands adiabatically to a volume of 0.080 m3. For this gas, CV = 12.27 J/mol  K, and the ideal gas constant is R = 8.314 J/mol  K. Calculate the work done by the gas during this expansion.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

shewald78

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 0.031 Pa (b) 680 W

Answer to Question 2

11 kJ


ghost!

  • Member
  • Posts: 560
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

nathang24

  • Member
  • Posts: 314
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

The small-scale distribution of different tree species in a Douglas-fir forest is determined by both The small-scale distribution of different tree species in a Douglas-fir forest is determined by both
Young adults increase in self-esteem between the ages of 18 and 25, according to this longitudinal s Young adults increase in self-esteem between the ages of 18 and 25, according to this longitudinal s
A finger-stick is useful for obtaining small amounts of blood. A finger-stick is useful for obtaining small amounts of blood.
Small Town USA: Struggling to Survive Small Town USA: Struggling to Survive
Nuts are also a good source of dietary fibre Nuts are also a good source of dietary fibre
Video: Brain Anatomy Animation (Part 1 of 2)

For a complete list of videos, visit our video library