Author Question: The mass of the Milky Way galaxy is a few ____. a. million solar masses b. hundreds of millions ... (Read 76 times)

urbanoutfitters · **on:** Jul 27, 2018

The mass of the Milky Way galaxy is a few ____.

a. million solar masses
b. hundreds of millions of solar masses
c. billion solar masses
d. hundreds of billions of solar masses
e. trillion solar masses

Question 2

The radius of Earth is 6,378 km. The force of gravity on a 1 kg ball at Earth's surface is 9.8 kg m/s2 . What is the force of gravity on this same ball when the ball is located 12,756 km from Earth's center? Hint: G = 6.67 10-11 m3/s2/kg

a. 2.45 kg m/s2
b. 4.9 kg m/s2
c. 9.8 kg m/s2
d. 19.6 kg m/s2
e. 39.2 kg m/s2