The only force acting on a particle is conservative force . If the particle is at point A, the potential energy of the system associated with and the particle is 41 J. If the particle moves from point A to point B, the work done on the particle by is 20 J. What is the potential energy of the system with the particle at B

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

What does every magnet possess? a. iron metal b.strong magnetic field c.repulsion d.north and south poles