10 sentences about post box ​

Explanation:

Post Office Is Used to Send and Receive Letters.

India Post Operates All Post Offices in India.

India Post Headquarters Is Located in New Delhi.

India Post Was Established in 1854.

Every Post Office Has Its Own Pin.

There Is a Post Box Outside the Post Office.

The Color of the Post Box Is Red.

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:

he thought hans was leaving

at least thats what i think it is

sorry if wrong