if the value of the electric field in an electromagnetic wave were doubled, what would happen to the total energy density of the wave?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Explain what happens at the saturation point when adding salt to water at room temperature.

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)