Unpolarized light of intensity 25.8 W/cm2 is incident on two polarizing filters. The axis of the first filter is at an angle of 25.6 ∘ counterclockwise from the vertical (viewed in the direction the light is traveling) and the axis of the second filter is at 57.0 ∘ counterclockwise from the vertical. What is the intensity of the light after it has passed through the second polarizer?

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: