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

Author Question: Stars A and B are both black holes but have different masses. If the mass of star A is twice as much ... (Read 24 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
on: Jul 29, 2018
Stars A and B are both black holes but have different masses. If the mass of star A is twice as much as the mass of star B, the average density of star A, compared to the average density of star B will be
 
  A) the same.
  B) four times as much.
  C) one-fourth as much.
  D) half as much.
  E) twice as much.

Question 2

The maximum magnetic energy density of a sinusoidal electromagnetic wave is 8.95  10-5 J/m3. What is the amplitude of the magnetic field component of this wave?
 
  (c = 3.00  108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2 )
  A) 12.0 T B) 16.0 T C) 15.0 T D) 14.0 T E) 13.0 T


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Pswine

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

C


jilianpiloj

  • Member
  • Posts: 521
Reply 2 on: Jul 29, 2018
Wow, this really help

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

A Black cat under the snow. A Black cat under the snow.
The Mass of Impacts on Earth The Mass of Impacts on Earth
Continental Polar (cP) and Continental Arctic (cA) Air Masses Continental Polar (cP) and Continental Arctic (cA) Air Masses
Mass Wasting Triggers Mass Wasting Triggers
Black Hole and Companion Star Black Hole and Companion Star
Mass Extinctions Mass Extinctions
Video: Appendicitis Animation

For a complete list of videos, visit our video library