Density is equal to

volume divided by mass

mass divided by volume

they are all equal to each other

For this case we have that by definition, the density of a body is given by:

ρ

Where:

M: It is the mass of the body

V: It is the volume of the body

So the correct option is:

"mass divided by volume"

mass divided by volume

ρ=

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:

a person with a mass of 106kg has a weight of 1060n