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.
From space earth shows itself as a planet covered mostly by water.
A very high-resolution texture of the planet Mars
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Planet George
Using your fingertips at the edge of the eye orbit, apply L stroke down to chin and back toward the ...
Human of the planet's net primary production and appropriation of NPP