There are approximately 1609 meters per mile. If the sun is 93 million miles away, how far is the sun in kilometers to two significant figures.

d=149637 x 10³ km

Explanation:

Given that

1 mile = 1609 meters

The distance of the sun ,d= 93 million

We know that

1 million = 10⁶

Therefore

93 million = 93 x 10⁶

d= 93 x 10⁶ x  1609 meters

d=149637 x 10⁶ meters

We know that 1000 m = 10 km

That is why we can say that

d=149637 x 10³ km

Therefore the distance d will be 149637 x 10³ km.

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:

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