This topic contains a solution. Click here to go to the answer

Author Question: A totally absorbing surface having an area of 7.7 cm2 faces a small source of sinusoidal ... (Read 50 times)

ghost!

  • Hero Member
  • *****
  • Posts: 560
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
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
Thanks for the timely response, appreciate it


isabelt_18

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

For a complete list of videos, visit our video library