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3 years ago

5

Guys, I know this is not homework related and I am aware so please do not report Please I am begging you I am doing a google cla

ssroom where you can get a little closer to God the code is w7cqmhq please join if you want to thank you

1 answer:

Zina [86]3 years ago

5 0

Answer:

I'm already in your group

Explanation:

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Which of the following devices is made of two different metals and produces a voltage when the metals are exposed to heat?

kondor19780726 [428]

This is the mechanism behind a thermocouple (choice D). The two metals generate a magnetic field between them when the temperature is varied, and this causes a voltage (potential difference) to form between the metals. An electronic meter is calibrated to translate this voltage difference into a temperature value for a user to read.

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3 years ago

What are the two ways to change the frictional force between two solid surfaces

Jet001 [13]

Explanation:

I think The strength of the force of friction depends on two factors: <em><u>how hard the surfaces push together</u></em> and <em><u>the types of surfaces involved</u></em><em><u>.</u></em><em><u> </u></em>

Tell me if it's correct.

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4 years ago

Solve 3* +5-220t = 0

slega [8]

Answer:

t = 27.5

Explanation:

$3 + 5 -220t = 0$

Well to solve for t we need to combine like terms and seperate t.

So 3+5= 8

8 - 220t = 0

We do +220 to both sides

8 = 220t

And now we divide 220 by 8 which is 27.5

Hence, t = 27.5

4 0

3 years ago

A housefly walking across a clean surface can accumulate a significant positive or negative charge. In one experiment, the large

Lisa [10]

Answer:

$4.56*10^8 \text{ electrons.}$

Explanation:

Since the fly accumulated a positive charge of +73pC, it must have lost an equal number of negative charge of -73pC to the surface (because the housefly was neutral to begin with).

Therefore, to answer our question we have to ask ourselves <em>how many electrons combine to make -73pC of charge? </em>

The answer is since one electron carries a charge of $-1.6*10^{-19}C$ , the number $n$ of electrons that make up -73pC $(-73*10^{-12}C)$ are

$n= \dfrac{-73*10^{-12}C}{-1.6*10^{-19}C/e}$

$\boxed{n= 4.56*10^8e.}$

Thus, the housefly lost about 456 million electrons to the surface!

4 0

4 years ago

A student stands with both feet on some scales in order to measure his weight.

Neko [114]

Answer:

500 N

Explanation:

Because even if he lift one foot his weight will be same as the pressure applied on the scale will be the same and will not change it is not that the scale measures each foot separately

3 0

3 years ago