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777dan777 [17]
3 years ago
15

Many doorbells work in the way pictured below. An electromagnet, which is made up of a coil of wire wrapped around a metal core,

causes a metal beater bar to rapidly move up and down. This causes the beater at the end of the bar to strike a bell repeatedly.
How does the electromagnet cause the beater bar to move?
Physics
2 answers:
Morgarella [4.7K]3 years ago
7 0

Answer:

when current is allowed to pass through the electromagnet it produces and magnetic field which eventually causes the bell striker to hit the gong

Explanation:

An electromagnet is a coil of wire around a magnet or metal.

when the door bell button is held down, current flows into a transformer which them steps down the current and passes it to the electromagnet, a magnetic field is created which them makes the bell-striker to hit the gong. in a series of make and break of the circuit, the process is repeated multiple times causing that buzzer sound.

the door bell button completes the circuit but when the bell-striker hits the gong the circuit is broken, the striker returns to its position and completes the circuit again and the process is repeated. this continues as long as the door bell button is held down. it is this make and break of the circuit that produces that buzzer sound of the doorbell

Nina [5.8K]3 years ago
4 0

Answer:

An electric current flows through the electromagnet's wire coil and generates a magnetic field, which produces a force on the beater bar.

Explanation:

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The given question is incomplete. The complete question is as follows.

A 75-g bullet is fired from a rifle having a barrel 0.540 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 14,000 + 10,000x − 26,000x^{2}, where x is in meters. Determine the work done by the gas on the bullet as the bullet travels the length of the barrel.

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We will calculate the work done as follows.

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Joe and Max shake hands and say goodbye. Joe walks east 0.40 km to a coffee shop, and Max flags a cab and rides north 3.65 km to
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Answer:

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AB=\sqrt{OB^{2}+OA^{2}}

Substitute 0.40 km for OB and 3.65 km for OA in the above equation.

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Therefore the distance between there destination is 3.67 km.

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