Answer:
White hole is an impossible object in universe. ... This means that in a hypothetical universe where there is a black and a white hole, in a short time after their first interaction the white hole will become another black hole so that the system will end up with two black holes.
Answer: the 30gram will hit the ground first
Explanation:the 30gram bullet will hit the ground first because it is fired
Answer:
D. all sounds are caused by vibrations
Explanation: