When the Earth, Moon, and Sun form a right triangle, with the Moonlocated at the right angle, as shown in the figure , the Moon is inits third-quarter phase. (The Earth is viewed here from above itsNorth Pole.)
a. Find the magnitude of the net force exerted on the Sun.
b. Find the direction of the net force exerted on the Sun. Give thedirection relative to the line connecting the Sun and the Moon.