The velocity of the transverse waves produced by an earthquake is 4.79 km/s, while that of the longitudinal waves is 8.5262 km/s.
A seismograph records the arrival of the transverse waves 49.4 seconds after that of the longitudinal waves.
How far away was the earthquake?
Answer in units of km.

What is the measure of a change in an objects velocity?

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?