A magnet is moved through a coil of wire

Physics

2 answers:

Korolek [52]3 years ago

8 0

As long as the magnet is moving ...

... there is voltage between the ends of the wire in the coil, and

... if there is any kind of conductor between the ends, then there is current flowing through the coil.

Vesna [10]3 years ago

7 0

A magnet and a coil of wire can be used to produce an electric current. A voltage is produced when a magnet moves into a coil of wire. This process is called electromagnetic induction .

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Controlling the amount of current in a circuit by opposing the flow of charge

Vera_Pavlovna [14]

Answer:

Resistor

Explanation:

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3 years ago

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A mine car, whose mass is 440kg, rolls at a speed of 0.50m/s on ahorizontal track, as the drawing shows. A 150kg chunk of coalha

ella [17]

Answer: 0.56 m/s

Explanation:

hello, there is 25° inclination angle for the chute in the drawing. Thankfully, I know this problem. The conservation of momentum.

so there are X and Y components for the momentum in this problem. The Y component is not conserved as when the coal gets in the cart, the normal force exerted by the surface reduces it to 0.

Now, the X component is definitely conserved here.

so you have the momentum of the cart which is 440*0.5 added to the momentum of the chunk which is 150*0.8*cos(25°), that is the momentum before the coupling between the objects. Afterwards both objects will have the same velocity, so we write the equation like this:

$440*0.5 + 150*0.8*cos(25) = 440*v_{final} + 150*v_{final} \\ => 220+120*cos(25) = (440+150)v_{final} => v_{final} = \frac{220+120*cos(25)}{590} = 0.56 m/s$