A is the answe for the final temperatures
No, it's mass remains the same. It's attraction to the planets center AKA gravity changes.
<h2><em>A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. You assume that the reference point is stationary, or not moving.</em></h2>
The frequency will not change
