Things that float or sink on water: 1)penny: sinks 2)twig: floats 3)pen cap: floats 4)small leaf: floats 5)rock: sinks 6)paper clip: sinks do you think you would get the same result if these items were dropped into a glass of vegetable oil of water ? ( a scientific or a good explained answer plzzz)

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:

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.