Suppose a movie director is filming on a set that should look like a hot desert. He wants the scene to appear warmer, so that th
e red and yellow tones are the most apparent. What color filters should be use? What color will the blue sky appear when he uses those filters, and why?
The formula for the electric field is Force (N)/charge(Coulombs). The electric field direction is defined by the direction of the force felt by a positive charge.