A man raises 10 bricks on the roof in 15 minutes. A 10 bick on the same roof in 30 minutes which or them does more work.

A man has more power than a boy

because a man rise 10 brick in the 15

minutes. and a boy rise 10 Brick on the

same route in 30 minutes .show a man

has more power than a boy .

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:

answer: (431,2)

step-by-step explanation: