ASAP! 50 POINTS! Describe the sound produced by an instrument of length L, that is open at one end. Be sure to include the terms pitch, frequency, timbre, nodes and antinodes.

Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.

Positrons are spontaneously emitted from the nuclei of

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)