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iVinArrow [24]
3 years ago
11

Describe how the design of a vacuum flask keeps the liquid inside hot ?

Physics
2 answers:
slavikrds [6]3 years ago
4 0
The gap between the two flasks<span> is partially evacuated of air, creating a near-</span>vacuum<span> which significantly reduces heat transfer by conduction or convection. </span>Vacuum flasks<span> are used domestically to </span>keep<span> beverages</span>hot<span> or cold.</span>
JulijaS [17]3 years ago
3 0
The gap between the two flasks is partially evacuated of air creating a near vacuum which significantly reduces heat transfer by conduction or convection 
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dybincka [34]

Explanation:

physical exertion.

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periods of emotional stress.

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5 0
3 years ago
Suppose the electric field in problems 2 was caused by a point charge. The test charge is moved to a distance twice as far from
mojhsa [17]

Answer:

it is reduced four times.

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By definition, the electric field is the force per unit charge created by a charge distribution.

If the charge creating the field is a point charge, the force exerted by it on a test charge, must obey Coulomb´s Law, so, it must be inversely proportional to the square of the distance between the charges.

So, if the distance increases twice, as the force is inversely proportional to the square of the distance, and the square of 2 is 4, this means that the magnitude of the force exerted on the test charge must be 4 times smaller.

8 0
3 years ago
I need help please...
Natalka [10]
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6 0
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ryzh [129]

Answer:

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2 years ago
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