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Lady bird [3.3K]

2 years ago

11

The worked examples of charged-particle motion are relevant to:______. a. a transistor. b. a cathode-ray tube. c. magnetic reson

ance imaging.d. cosmic rays. e. lasers.

1 answer:

Burka [1]2 years ago

3 0

Answer:

B. Cathode Ray Tube

Explanation:

In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a negatively charged particle, which was later named the electron.

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A piece of plastic has a net charge of +9.9 μC. How many more protons than electrons does this piece of plastic have? (e = 1.60

Leto [7]

Answer:

The number of protons 6.19 more than electron.

Explanation:

Given that,

Charge $Q=+9.9\times10^{-6}\ C$

We know that,

formula of charge

$Q = nc$

Where,

Q = total charge

n = number of protons

e = charge of electron

Put the value into the formula

$n = \dfrac{Q}{e}$

$n=\dfrac{9.9\times10^{-6}}{1.6\times10^{-19}}$

$n=6.1875\times10^{13}\ C$

According to statement of question

Divide the answer by $10^{13}$

$n=\dfrac{6.1875\times10^{13}}{10^{13}}$

$n=6.19\ C$

Hence, The number of protons 6.19 more than electron.

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2 years ago

If the slope of a line on a speed-time graph is 0 and it is not on the x-axis, what is the object doing?

Zinaida [17]

It is moving at a constant speed, not accelerating.

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3 years ago

Which type of graph would be best for showing the percentage of people in a family with different jobs? A. Circle graph B. Scatt

musickatia [10]

Answer:

A

Explanation:

A circle graph typically represents numbers in percentages, used to visualize a part to whole relationship or a composition

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3 years ago

A human hair has a thickness of about 70 micrometers. How many meters is this?

Aleksandr [31]

This is 7e-5 meters. Hope this helps! Please mark brainliest. :)

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2 years ago

Read 2 more answers

Please help quickly,the picture and choices are above.

Setler79 [48]

Answer:

C because it make sens

C the light wave traveled through ice and then through a Dimond.

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2 years ago