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

Author Question: A giant star radiates energy at the rate of 3.0 1030 W, and its surface temperature has been ... (Read 80 times)

nummyann

  • Hero Member
  • *****
  • Posts: 576
on: Jul 29, 2018
A giant star radiates energy at the rate of 3.0  1030 W, and its surface temperature has been measured to be 3000 K. Assuming that it is a perfect emitter, what is the radius of this star? ( = 5.67  10-8 W/m2  K4)
 
  A) 7.8  1010 m
  B) 8.7  1010 m
  C) 1.4  1010 m
  D) 1.9  1011 m
  E) 2.3  1011 m

Question 2

The radius of a star is 6.95  108 m, and its rate of radiation has been measured to be 5.32  1026 W. Assuming that it is a perfect emitter, what is the temperature of the surface of this star? ( = 5.67  10-8 W/m2  K4)
 
  A) 6.27  103 K
  B) 8.25  103 K
  C) 8.87  103 K
  D) 3.93  107 K
  E) 5.78  107 K


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cat123

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 29, 2018
Answer to Question 1

E

Answer to Question 2

A


nummyann

  • Member
  • Posts: 576
Reply 2 on: Jul 29, 2018
:D TYSM

nyrave

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Basic overview of energy and human life. Basic overview of energy and human life.
Parts of the Hand Used in Palpation; Dorsal Surface Parts of the Hand Used in Palpation; Dorsal Surface
Star Map Southern Horizon Star Map Southern Horizon
Rate of Residential Change, Past Year, in the United States Rate of Residential Change, Past Year, in the United States
Solar energy heats the atmosphere, creates seasons, and causes air to circulate Solar energy heats the atmosphere, creates seasons, and causes air to circulate
The radius of the Sun is 6.95 × 108 m. It radiates heat at the rate of 5.32 x 10 The radius of the Sun is 6.95 × 108 m. It radiates heat at the rate of 5.32 x 10
Video: Uterine (menstrual) cycle - phases

For a complete list of videos, visit our video library