A bat in a cave emits a sound and receives its echo 0.1 seconds later. Show that the distance to the wall of the cave is 17 meters. Please show step by step.

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.)

The energy produced as a result of this flow of electrons from atom to atom is called

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine