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kicyunya [14]
2 years ago
9

What allows the bimetallic coil to turn on or off a heating or cooling system? The two metals contract the same amount. The ther

mostat is set at a particular temperature. The two metals expand differently. The coil comes in contact with air.
Physics
1 answer:
Vedmedyk [2.9K]2 years ago
3 0

Answer:

The two metals expand differently.

Explanation:

The bimetallic strip has two metal strips positioned like a bridge, these strips connect the electrical circuit to the heating system. When these strips are linear or "down" they allow the electricity to move through the circuit to the heating system to turn the heat on. When the strips are "up" the disconnect the electricity flow, thus turning the heating system off, thus the room becomes cool/cold.

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Normal atmospheric pressure is 1.013 105 Pa. The approach of a storm causes the height of a mercury barometer to drop by 27.1 mm
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Answer:

The atmospheric pressure is 0.97622\times10^{5}\ Pa.

Explanation:

Given that,

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Using formula of pressure

p = \rho g h

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h =\dfrac{1.013\times10^{5}}{13.59\times10^{3}\times9.8}

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h''=0.76-0.027

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P=\rho g h

Put the value into the formula

P= 13.59\times10^{3}\times9.8\times0.733

P=0.97622\times10^{5}\ Pa

Hence, The atmospheric pressure is 0.97622\times10^{5}\ Pa.

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