The best thermal conductor is b. metal
They have more energy than radio waves.
It would go slower there needs to be more gravity to go faster
Answer:
False
Explanation:
An object with no net forces acting on it which is initially at rest will remain at rest.
The Doppler effect says that if the source of a sound wave and the observer are moving further apart, the frequency of the sound as the observer hears it will decrease. This can be caused by the source moving away from the observer or the observer moving away from the source. Both C and D will cause the decrease in frequency.
Choice F
