Answer:
The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus.
Explanation:
18joules
1/2 of 4=2
2 multiply by 9= 18 joules
a=5m/s
V= s/t
V= 25/5
V=5m/s
0.000025s
Period it’s. : T(s)= 1/f(Hz)=1/40000Hz=0.000025s