Author Question: If you could count stars at a rate of about one per second, how long would it take to count all the ... (Read 82 times)

eruditmonkey@yahoo.com · **on:** Jul 27, 2018

If you could count stars at a rate of about one per second, how long would it take to count all the stars in the Milky Way Galaxy?

A) several days B) several thousand years
C) several weeks D) several years

Question 2

Which of the following scenarios involves energy that we would typically calculate with Einstein's formula E = mc2?

A) A small amount of the hydrogen in a nuclear bomb becomes energy as fusion converts the hydrogen to helium.
B) A burning piece of wood produces light and heat, therefore giving off radiative and thermal energy.
C) A mass raised to a great height has a lot of gravitational potential energy.
D) An object accelerated to a great speed has a lot of kinetic energy.