Answer:

Explanation:
The magnetic field B inside long solenoid with current I is given as

where
N is number of turn of solenoids = 1140 turns

I is current that passes through solenoid
L is length along which current pass = 0.350 m
plugging value to get required value of current


Answer:
This is because white light consists of 7 colours with different angles o deviation or retraction.
Explanation:
When a narrow beam of light is refracted by a prism the light spreads into a band of colours (called the spectrum of light )
But in this case if a blue colour is observed it is due to the angle of refraction ,for instance red is refracted the least and hence is seen
The given velocity is 465 m/s.
Part a.

Answer: 1674 km/h
Part b.

Answer: 40,176 km/day.
1. Kinetic
He makes the ball move by kicking it, which increases the kinetic energy
Wings to fly. Without flying, birds would be near defenseless.