Aconstant magnetic field passes through a single rectangular loop whose dimensions are 0.52 m x 0.64 m. the magnetic field has a magnitude of 2.0 t and is inclined at an angle of 82° with respect to the normal to the plane of the loop.
(a) if the magnetic field decreases to zero in a time of 0.49 s, what is the magnitude of the average emf induced in the loop?
(b) if the magnetic field remains constant at its initial value of 2.0 t, what is the magnitude of the rate δa δt at which the area should change so that the average emf has the same magnitude?

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up