I bet you cant make me laugh
?

answer:

youngest sibling after snitching on his older siblings: hey! hey...

older sibling: tears falling down his eyes but with a straight face

middle sibling: tears falling down his eyes with a straight face too

youngest sibling: how y'all doing?

middle and older siblings head: I wanna beat this kid's butt so bad!

im really bad at chemistry jokes because all the good ones argon  

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:

i think the answer is a, hope this : )