In order for an electric charge to move from one position to another, there needs to be no difference in electrical potential energy between the two positions. True or false

Asample of a gaseous substance changes into a liquid

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?