Melissa and david were playing on the tire swing that hangs from the big oak tree in their yard. while melissa was sitting in the tire hole, david pulled the tire to the side and over his head with his hands and sprinted as fast as he could. his efforts allowed melissa to swing really high. beginning with melissa sitting in the tire swing above david's head, list and explain the energy conversion taking place as she moves.

Your science teacher brings in a speaker to talk to your class about climate change. during the session, students ask a few questions. which questions are related to the current evidence on climate change

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.

Which of the following describes how a microwave heats food