Author Question: The Earth's orbit is closest to the Sun in January and farthest from the Sun in July. When is the ... (Read 77 times)

Bernana · **on:** Jul 28, 2018

The Earth's orbit is closest to the Sun in January and farthest from the Sun in July. When is the Earth moving the slowest in orbit?
a. Neither January nor July since the orbital speed of the Earth is a constant.
b. January
c. July
d. This occurs twice a year, in April and in October.

Question 2

If the mass of Venus is 0.786 times that of Earth, and its radius is 0.950 that of Earth, estimate the gravitational acceleration g at the surface of Venus. (gearth = 9.80 m/s2)
a. 7.31 m/s2
c. 8.27 m/s2
b. 3.73 m/s2
d. 8.53 m/s2