Hi! I have homework and although I understand most of it, I don't understand how to solve this question:
The velocity of the transverse waves produced
by an earthquake is 5.11 km/s, while that of
the longitudinal waves is 9.4024 km/s. A seis-
mograph records the arrival of the transverse
waves 48.6 s after that of the longitudinal
waves.
How far away was the earthquake?
Answer in units of km
I would really appreciate it if someone could show me how they got the answer. Thank you so much!
The velocity of the transverse waves produced
by an earthquake is 5.11 km/s, while that of
the longitudinal waves is 9.4024 km/s. A seis-
mograph records the arrival of the transverse
waves 48.6 s after that of the longitudinal
waves.
How far away was the earthquake?
Answer in units of km
I would really appreciate it if someone could show me how they got the answer. Thank you so much!
-
dV = 9.4024 - 5.11 = 4.2924 km/s
D = dV*dt = 4.2924*48.6 = 208.61 km
____________________________________
t = D/u + D/v = 66/330 + 66/v = 1.77143
v = 42 m/s
D = dV*dt = 4.2924*48.6 = 208.61 km
____________________________________
t = D/u + D/v = 66/330 + 66/v = 1.77143
v = 42 m/s