A0.320 kg puck at rest on a horizontal frictionless surface is struck by a 0.220 kg puck moving in the positive x direction with a speed of 4.09 m/s. after the collision, the 0.220 kg puck has a speed of 1.29 m/s at an angle of θ = 60.0° counterclockwise from the positive x axis. (a) determine the velocity of the 0.320 kg puck after the collision. express your answer in vector form. vf = m/s (b) find the percent of kinetic energy lost in the collision.

Iwas thinking the wavelength is one half its original value

Answer;

hot magma rises and pushes up toward the lithosphere, and as it cools it cycles back down toward the core to be heated again.

explanation; convection currents are the circular pathways taken by a fluid that enhances heat transfer by the process known as convection which occurs in fluids.convection currents transfer heat from one place to another by mass motion of a fluid. earth mantle is in a semi-liquid state and behaves like any other fluid, rising up from the bottom of the mantle after becoming hotter and less dense from heat of the earth's core, as the rock loses heat into the earth's crust it becomes cooler and more dense, then sinking back down to the core, then repeating the cycle.