Answer:
and person at rest hears sound at a different frequency than a person moving.
Explanation:
Explanation:
A. answer is the correct answer
Answer:
An atom is a smallest particle of an element.
Explanation:
It's particles are proton , electron and neutron.
Answer:
D
Explanation:
Momentum= mass x speed (P=MV)
Momentum= 5x6=30
Momentum= 30kg m/s