How long does it take for the reaction to be 90% complete?

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

Of is j/kg·k. if a 2.6 kg of isk to k,is ?