Physics, 28.06.2019 18:30 amandaaaa13

Asolenoid is created by wrapping a l = 45 m long wire around a hollow tube of diameter d = 2.5 cm. the wire diameter is d = 0.95 mm. the solenoid wire is then connected to a power supply so that a current of i = 8.5 a flows through the wire.
(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.
(b) calculate the number of turns, n, in the solenoid.
(c) write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d, the length of the wire l and the diameter of the wire d. assume it is constructed by using only 1 layer of loops (note that most solenoids are actually constructed with many layers, to maximize the magnetic field density).
(d) calculate the length of the solenoid (l2) in meters.
(e) calculate the magnitude of the magnetic field at the center of the solenoid in tesla.

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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:

Answer from: Quest

The answer is d) by requesting advice on science internet sites

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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Asolenoid is created by wrapping a l = 45 m long wire around a hollow tube of diameter d = 2.5 cm. t...

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