Life cycle of a star question i don't feel like answering by
1on of the endings of a star that has a mass 4-8 times greater than our sun; are very dense
2this is what a low or medium life star will become later in its life; typically have the same mass as our sun, but only a bit larger than the earth
3the explosion of a star when it has reached the end of its lifetime; are no longer stars, and are seen as bright points of light in the sky

answer: i pick a

explanation:

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: