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4 years ago

State the fundamental law of electrostatics

Physics

1 answer:

Nesterboy [21]4 years ago

6 0

Answer:

According to this law, the force exerted between two point charges

i) is directly proportional to the product of their strengths.

ii) is inversely proportional to the square of the distance between them. and

iii) is inversely proportional to the absolute permittivity of the surrounding medium.

This is known as Coulomb's Law.

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4 years ago

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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

drek231 [11]

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

Explanation :

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.

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

$Mass=Density\times Volume=1g/mL\times 45mL=45g$

Now we have to calculate the heat change of cold water.

Formula used :

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

where,

Q = heat change of cold water = ?

m = mass of cold water = 45 g

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:

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

$Q=1638.036J=1.6\times 10^3J$

Therefore, the heat change of cold water is $1.6\times 10^3J$

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3 years ago

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State the fundamental law of electrostatics​

State the fundamental law of electrostatics