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GrogVix [38]
3 years ago
11

How does a thermostat know how to keep hot soup hot and cold soup cold?

Physics
1 answer:
Alex17521 [72]3 years ago
3 0

A thermos keeps thing hot or cold by using vacuum technology to keep air from getting inside. The double walled feature of the cup is what allows the container to be "vacuum sealed". In manufacturing the air between the two walls is removed creating the seal. The lack of air keeps the heat or cold from transfering, therefore letting it remain basically the same temperature.

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A dry cell changes ____ energy into ____energy.
zmey [24]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ A dry cell changes chemical energy into electrical energy.

<h3><u>✽</u></h3>

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5 0
3 years ago
Read 2 more answers
when the elevator is moving upwards but its slowing to a stop at the top floor. what is the direction of the net force on the ri
Zielflug [23.3K]

Answer:Downward

Explanation:

As elevator is moving upward but is decelerating to stop at top

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N is the normal reaction

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F_{net}=N-mg=m(-a)

here upward direction is positive while downward direction is negative

Therefore net force is in downward direction

8 0
4 years ago
You observe a star system for many weeks. The light curve does not show significant changes in brightness, but a series of spect
mariarad [96]

Based on the changes in the light curve and the behavior of the series of spectra, this is a<u> binary system. </u>

<h3>How is this is binary system?</h3>

The characteristics described are those of a binary system with the specific type of system being the spectroscopic binary system.

This is because in a spectroscopic binary system, there won't be significant changes in brightness but as a result of stars orbiting towards and then away from us, spectral features will appear as alternative absorption lines.

In conclusion, this is a binary system.

Find out more on binary systems at brainly.com/question/15868824.

8 0
3 years ago
You see a total eclipse of the sun. Three Saros cycles later, you find yourself at the same location.
alukav5142 [94]

Answer:

The correct answer is B. You would not have to travel far to see another total eclipse  .

Explanation:

it is said that the way to predict or know beforehand if there is a lunar or solar eclipse is just to know the what is called the saros which are periods of exactly 223 synodic months and the eclipses are repeated or occurred in the same location every 3 Saros cycles.

5 0
3 years ago
True or False: The absorption of alcohol can be slowed down by eating, but only water can reduce the BAL level.
lesya [120]
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3 0
4 years ago
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