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777dan777 [17]
2 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]2 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]2 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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A 50.1 kg diver steps off a diving board and drops straight down into the water. The water provides an average net force of resi
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Answer:

The total distance is 16.9 m

Explanation:

We understand work in physics as certain force exerted through certain distance. To reach that point below the water, the work done by the diver must be equal to the work done by the water's force of resistance. Therefore, we determine both work expressions and we solve the equation for the diver distance, which is the total distance between the diving board and the stopping point underwater.

W_{d}: work done by diver\\W_{R}: work due the force of resistance\\W_{d} = W_{R}\\F_{d}\times d_{d}=F_R \times d_{R}\\d_{d}= \frac{F_R \times d_R}{F_d}= \frac{F_R \times d_R}{m_d \times g}= \frac {1598 N \times 5.2 m}{50.1 kg \times 9.81 m/s^2}\\d_{d}= 16. 91 m

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2 years ago
How is a mixture different from a compound
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Answer:

Compounds are two or more elements chemically combined in definite proportions by weight.

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Explanation:

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6 0
2 years ago
While sitting in a swivel chair, you push against the floor with your heel to make the chair spin. The 6.7 N frictional force is
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Answer:

I = 1.4kgm²

Explanation:

The rotational motion is caused by the frictional force, which generates a torque on the system. As there is no other force that creates a torque, this can be expressed in the equation of rotational motion below:

\tau_f =I\alpha\\\\

And \tau_f=rf, where r is the distance from the point of application and the rotation axis, and f is the magnitude of the frictional force. This is because the frictional force is applied in the direction that causes the greatest angular acceleration (this is, 90°) and rf\sin90\°=rf. Then, we have that:

rf=I\alpha\\\\\implies I=\frac{rf}{\alpha}\\\\

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I=\frac{(0.39m)(6.7N)}{1.8rad/s^{2} } =1.4kgm^{2}

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2 years ago
A flashlight uses four batteries to power it. Which type of current flows inside the flashlight?
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A flashlight has a flow of a direct current.
5 0
3 years ago
Read 2 more answers
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