Arock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.6 s later. if the speed of sound is 340 m/s, how high is the cliff?

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked

What is the difference between mass density and weight density?