A) How long (in ns) does it take light to travel 1.0 m in a vacuum? b) What distance does light travel in water, glass, cubic zirconia during the time it travels in 1.0 m vacuum?

a

b

i      

ii    

iii    

Explanation:

Generally the time taken to travel 1 m in a vacuum is mathematically represented as

Here c is the speed of light with value  

So  

The distance light travels in water is mathematically represented as

Here n_w  is the refractive index of  water with value 1.333

So

The distance light travels in glass is mathematically represented as

Here n_g  is the refractive index of  glass with value 1.5

So

The distance light travels in cubic zirconia is mathematically represented as

Here n_c  is the refractive index of cubic zirconia with value 2.15

So

28. evolution

29. environment, survive, offspring  

explanation:

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: