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

Author Question: Over time, as they age, the habitable zone of stars like our Sun A) move inward B) remain the ... (Read 157 times)

ARLKQ

  • Hero Member
  • *****
  • Posts: 571
on: Jul 27, 2018
Over time, as they age, the habitable zone of stars like our Sun
 
  A) move inward
  B) remain the same
  C) suddenly disappear
  D) move outward

Question 2

Which of the following best explains the hypothesized phenomenon of black hole evaporation?
 
  A) Particles (or anti-particles) are occasionally ejected from within the event horizon, causing the black hole to lose mass.
  B) Virtual particles created near the black hole are constantly annihilating each other, causing a very high temperature even if the black hole has no accretion disk. This high temperature provides escape velocity for the virtual particles, causing the entire cloud of virtual particles to expand away into space.
  C) Particles (or anti-particles) are created by a quantum mechanical effect near, but outside, the event horizon of the black hole. The law of conservation of energy maintains that the black hole must lose energy to pay for the creation of this mass.
  D) Black hole evaporation is a virtual process, meaning that it has been theorized by astrophysicists, but doesn't really occur.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Anton

  • Sr. Member
  • ****
  • Posts: 302
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

C


ARLKQ

  • Member
  • Posts: 571
Reply 2 on: Jul 27, 2018
Gracias!

parker125

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Cryptorchidism. (a) In complete cryptorchidism, the testes of a newborn have failed to descend into Cryptorchidism. (a) In complete cryptorchidism, the testes of a newborn have failed to descend into
Warming friction using the knuckles. The first two knuckles move back and forth on the skin to ... Warming friction using the knuckles. The first two knuckles move back and forth on the skin to ...
You're just on Time You're just on Time
Physics: Power, Energy and Time Physics: Power, Energy and Time
Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf
Remains of an abscission zone between a leaf petiole and twig of horse chestnut (Aesculus hippocasta Remains of an abscission zone between a leaf petiole and twig of horse chestnut (Aesculus hippocasta
Video: Bulk flow - factors that influence bulk flow

For a complete list of videos, visit our video library