Which of these calculations could you use to find momentum if momentum is equal to mass times velocity and velocity is equal to displacement divided by time?

mass×displacement÷time

mass×time

length×time

mass×distance×time

To find momentum, we use the expression

Explanation:

We are given:

Momentum is equal to mass multiplied by velocity of an object.

Mathematically,

     ......(1)

And,

Velocity is equal to the rate of change of displacement with respect to time.

Mathematically,

     .....(2)

Putting the value of velocity from equation 2 to equation 1, we get:

Or,

Hence, to find momentum, we use the expression

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 lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up