A light wave traveling through medium 1 strikes a boundary with medium 2 at
a 45° angle. The light then enters the second medium and refracts away from
the boundary. What could the two mediums be?
A. Medium 1: water
Medium 2: air
B. Medium 1: glass
Medium 2: water
C. Medium 1: glass
Medium 2: diamond
D. Medium 1: diamond
Medium 2: air

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:

2b2t

explanation:

2b2t