Answer:
C
Explanation:
C. a system that converts thermal energy into other useful forms of energy
Answer:
150 million kilometres
Explanation:
The astronomical unit (symbol: au, or AU or AU) is a unit of length, roughly the distance from Earth to the Sun and equal to 150 million kilometres (93 million miles) or 8.3 light minutes.
Answer:
magnitude of the velocity
Explanation:
I'm not sure what you were trying to put here