contestada

The epicenter of an earthquake was located 1800 kilometers from
a seismic recording station. If the S-wave arrived at the seismic
station at 10:06:40 am, at what time did the P-wave arrive at the
same seismic station?
А
10:03:00 am
C
10:09:40 am
B
10:03:40 am
D
10:10:20 am

Respuesta :

Answer:

B

Explanation:

The P-wave reached to the seismic station in half time as compared to S-wave.

The P-wave arrive at the  seismic station is 10:03:40 am because of the double speed of P-wave as compared to S-wave. In the Earth, P waves travel at speeds of about 6 km per second in surface rock to about 10.4 km per second means at average speed of 8 km per second.

While on the other hand, S-wave moves at a speed of 1 to 8 km per second means at an average speed of 4 km per second so we can conclude that the P-wave reached to the seismic station in half time as compared to S-wave.

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