Asteel section of the alaskan pipeline had a length of 56.5 m and a temperature of 24.7 °c when it was installed. what is its change in length when the temperature drops to a frigid -43.1 °c?

Change in length=0.0275 m.

Explanation:

Given that

Length L= 56.5 m

Initial temperature ,T₁ = 24.7⁰C

Final temperature ,T₂ = -43.1 ⁰C

Coefficient of thermal expansion for steel taken as

α = 7.2 x 10⁻⁶ /⁰C

We know that change in the length due to change in the temperature given as

ΔL = Lα  ΔT

ΔL =56.5 x 7.2 x 10⁻⁶ x (-43.1 -24.7 ) m

ΔL = - 27581.04 x 10⁻⁶ m

ΔL = -0.0275 m

Therefore the length of the steel get reduce by 0.0275 m.

The change in the length will be 0.0275 m.

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:

seeing the graph would