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Home Q & A Board Science-Related Homework Help Physics Astronomy
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rylee19 rylee19
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6 years ago
The temperature of an object from which no heat energy can be extracted is
 
  a. 0 F
  b. 0 C
  c. 0 K
  d. 100 K
  e. 100 C

Question 2

Which of the following can you never know about a black hole?
 
  a. Mass
  b. Rotation
  c. Electrical charge
  d. The elements of the material that has fallen in.

Question 3

____ is a set of rules that describes how atoms and subatomic particles behave.
 
  a. Kirchhoff's law
  b. Black body radiation law
  c. The Coulomb force
  d. Quantum mechanics
  e. The binding energy

Question 4

The escape velocity at the event horizon around a black hole is
 
  a. smaller than the speed of light.
  b. equal to the speed of light.
  c. much larger than the speed of light.
  d. irrelevant since nothing (including light) can escape from a black hole.

Question 5

A neutral atom always contains
 
  a. the same number of protons as it does neutrons.
  b. the same number of electrons as it does neutrons.
  c. the same number of protons as it does electrons.
  d. twice as many protons as it does neutrons.
  e. twice as many neutrons as it does protons.
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suncssuncs
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6 years ago
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rylee19 Author
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#2
6 years ago
Mind blown, I've bookmarked this site on told my friends
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#3
6 years ago
Really appreciate that
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