The captain of a spaceship orbiting planet X discovers that to ...

[nramada]

The captain of a spaceship orbiting planet X discovers that to remain in orbit at from the planet's center, she needs to maintain a speed of What is the mass of planet X? (G = 6.67  10-11 N  m2/kg2 )
 
  A) 2.8  1019 kg
  B) 4.2  1017 kg
  C) 2.8  1016 kg
  D) 4.2  1014 kg

Question 2

An atom's atomic number is
 
  A) the number of protons in its nucleus.
  B) the number of electrons orbiting the nucleus of the neutral atom.
  C) Both of the above.
  D) the number of electrons orbiting the nucleus of the ionized atom.
  E) All of the above.

[Laurenleakan]

Answer to Question 1

A

Answer to Question 2

C

[nramada]

Both answers were spot on, thank you once again

[Laurenleakan]

Great! Please up vote