How do we know the mass of Neptune? A) the period and size of ...

[soccerdreamer_17]

How do we know the mass of Neptune?
 
  A) the period and size of Neptune's orbit around the Sun
  B) the orbital speed of Neptune moving around the Sun
  C) the size and density of Neptune
  D) the distance of Neptune from the Earth and its rotation period
  E) the periods and sizes of the orbits of the moons around Neptune

Question 2

The total energy radiated by a blackbody depends on
 
  A) the square of its temperature.
  B) the fourth power of its temperature.
  C) the fourth root of its temperature.
  D) the square root of its temperature.
  E) the cube of its temperature.

[javimendoza7]

Answer to Question 1

E

Answer to Question 2

B