Four traveling waves are described by the following equations, where all quantities are measured in si units and y represents the displacement. i: y = 0.12 cos(3x - 21t) ii: y = 0.15 sin(6x + 42t) iii: y = 0.13 cos(6x + 21t) iv: y = -0.27 sin(3x - 42t) which of these waves have the same period?

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.

What are some important factors to consider when choosing a warm-up before your workout?

The bubbles in a carbonated soft drink are produced when carbonic acid decomposes to form carbon dioxide and water. in a closed system, this equilibrium exists as why does a carbonated soft drink lose carbonation when the container is left open? a.water evaporates, which favors the formation of h2co3. b.pressure decreases, which favors the formation of h2co3. c.the open container warms up, which causes more gas to escape. d.co2is removed, which favors the formation of h2co3.