Which of the following scenarios correctly demonstrates the ...

[yoooooman]

Which of the following scenarios correctly demonstrates the transformation of mass into energy as given by Einstein's equation, E = mc2?
 
  A) When hydrogen is fused into helium, whether in the Sun or in a nuclear bomb, the mass difference is turned into energy.
  B) An object accelerated to a great speed has a lot of kinetic energy.
  C) A mass raised to a great height has a lot of gravitational potential energy.
  D) When you boil a pot of water, it has a high heat content, or thermal energy.
  E) A burning piece of wood produces light and heat, therefore giving off radiative and thermal energy.

Question 2

If we went back in time 10 billion years, would we expect Hubble's constant to be identical to the present-day Hubble constant?
 
  A) Yes, a constant never changes.
  B) No, Hubble's constant is roughly equal to 1 divided by the age of the universe, and 10 billion is a substantial enough number to notice a difference.
  C) If we went back further in time, it would be different, but 10 billion years is not enough.
  D) It would only change if we went 10 billion years into the future.

[heyhey123]

Answer to Question 1

A

Answer to Question 2

B

[yoooooman]

Excellent

[nothere]

Gracias!