Nuclear reactors that produce consumer power in present times are ...

[jake]

Nuclear reactors that produce consumer power in present times are powered by
 
  A) fission.
  B) fusion.
  C) both fission and fusion.

Question 2

In Gulliver's Travels, Jonathan Swift wrote about a country where astronomers had found that Mars had two moons. (The moons of Mars were unknown at that time).
 
  They have likewise discovered two lesser stars, or satellites, which revolve about Mars, whereof the innermost is distant from the center of the primary planet exactly three of his diameters, and the outermost five; the former revolves in the space of ten hours, and the latter in twenty-one and a half... If this information were correct, what would the mass of Mars be? The radius of Mars is 3,393,500 m and G = 6.67 x 10-11 Nm2/kg2. A) 3.86  1024 kg
  B) 6.45  1023 kg
  C) 5.67  1021 kg
  D) 2.83  1021 kg
  E) 4.78  1020 kg

[scottmt]

Answer to Question 1

Answer: A

Answer to Question 2

A

[jake]

Thanks for the timely response, appreciate it

[helenmarkerine]

Great answer, keep it coming