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3 years ago

How does a van de graff generator discharge

Physics

1 answer:

attashe74 [19]3 years ago

7 0

<h3><u>Van de graff generator discharge:</u></h3>

A "Van de Graaff generator" is a device that has been designed to produce static electricity. The van de graff generator works on the principle of "electrostatic induction", due to which electrostatic potential is constant at any other point throughout the conductor.

It is also observed that van de graff discharge takes place in air or gases which are readily pointed at the conductors. Discharge occurs in the air because most of the static charges get removed by the gases present in the air.

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As you increase voltage, what happens to the strength of an electromagnet?

blsea [12.9K]

When the electric current moves through a wire, it makes a magnetic field. ... The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage.

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4 years ago

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WILL GIVE BRAINLIEST AND 30 POINTS!

Snezhnost [94]

Answer:

1. B. Increase

2. A. Decrease

Explanation:

To understand this issue, we need to put some values and using the ohm's law we can corroborate the two situations.

Ohm's law:

$V = I*R\\where:\\I = current[A] ampers\\R = resistance [ohms]\\V = voltage [volts]\\$

Now for the voltage we will use V = 110 [V], for resistance R = 10 [ohms]

Replacing the values we have:

$I = \frac{V}{R} \\\\I = \frac{110}{10}\\I= 11 [amp]$

Now let's double the voltage 220 [V]:

$I = \frac{220}{10} \\I = 22 [amp]\\$

Therefore the current will be increased.

Let's do the same for the resistance if originally we have R = 10 [ohms]

$I = \frac{V}{R}\\I = \frac{110}{10} \\I = 11 [amp]\\$

Now let's double the resistance 20 [ohms]:

$I=\frac{110}{20}\\I = 5.5 [amp]$

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4 years ago

1. A note has a wavelength of 0.77955 m. If the speed of sound is 343.00 m/s, what pitch is this note? 2. A note has a wavelengt

AVprozaik [17]

Answer:

1.) 440 Hz

2.) 659.3 Hz

Explanation:

1.) Given parameters are:

wavelength = 0.77955 m.

speed of sound = 343.00 m/s

Frequency = speed/ wavelength

Substitute speed and wavelength into the formula

Frequency = 343/ 0.77955

Frequency = 439.99

Frequency = 440 Hz approximately

2.) The parameters given are:

wavelength = 0.52028 m.

speed of sound = 343.00 m/s

Using the same formula

Frequency = speed/wavelength

Substitute all the parameters into the formula

Frequency = 343 / 0.52028

Frequency = 659.3 Hz approximately

The pitch of a note depends on the frequency of the sound waves.

The pitch of a sound increases as the frequency of the sound waves increases.

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3 years ago

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A cricket ball has mass 0.155 kg. If the velocity of a bowled ball has a magnitude of 35.0 m/s and the batted ball's velocity is

FinnZ [79.3K]

Answer:

Magnitude of change in momentum = 4.65 kg.m/s

Magnitude of impulse = 4.65 kg.m/s

Magnitude of the average force applied by the bat = 1550 N

Explanation:

Mass of the cricket ball, m = 0.155 kg

Initial velocity of the ball, u = 35.0 m/s

final velocity of the ball after hitting the bat, v = 65.0 m/s

Time of contact, t = 2.00 ms = 2.00 × 10⁻³ s

Now,

Magnitude of change in momentum = Final momentum - Initial momentum

Magnitude of change in momentum = ( m × v ) - ( m × u )

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Now, Magnitude of impulse = change in momentum

thus,

Magnitude of impulse = 4.65 kg.m/s

Now,

magnitude of the average force applied by the bat = $\frac{\textup{Impulse}}{\textup{Time}}$

magnitude of the average force applied by the bat = $\frac{\textup{4.65}}{\textup{3}\times\textup{10}^{-3}}$

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4 years ago

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maks197457 [2]

Answer:

C. Transform Boundary

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3 years ago

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