Why does the speed of sound waves change in different mediums?

What object a collides with object b and bounces back its final momentum is?

Which atomic model was proposed as a result of j. j. thomson’s work?

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.)