3 years ago

Science Write two examples of heating appliances

Physics

1 answer:

bearhunter [10]3 years ago

4 0

Answer:

a} Infrared radiant heaters.

b} Fan heaters.

Explanation:

I hope this is okay, should I give more.

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To calibrate your calorimeter cup, you first put 45 mL of cold water in the cup, and measure its temperature to be 24.7 °C. You

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Answer : The heat change of the cold water in Joules is, $1.6\times 10^3J$

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First we have to calculate the mass of cold water.

As we know that the density of water is 1 g/mL. The volume of cold water is 45 mL.

$Density=\frac{Mass}{Volume}$

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$Q=m\times c\times (T_2-T_1)$

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Q = heat change of cold water = ?

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c = specific heat of water = $4.184J/g^oC$

$T_1$ = initial temperature of cold water = $24.7^oC$

$T_2$ = final temperature = $33.4^oC$

Now put all the given value in the above formula, we get:

$Q=45g\times 4.184J/g^oC\times (33.4-24.7)^oC$

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