3 years ago

What are examples of non mechanical energy

Physics

1 answer:

ExtremeBDS [4]3 years ago

3 0

Atoms, molecules, electrons, photons, protons etc.

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"The work done on an ideal gas system in an isothermal process is -400 J. What is the change in internal (thermal) energy of the

Archy [21]

Answer:

zero

Explanation:

Work done = - 400 J

In an isothermal process, the temperature remains constant. So, according to the first law of thermodynamics

dQ = dU + dW

As the temperature remains constant and the change in internal energy is the function of change in temperature, here change is temperature is zero so the change in internal energy is also zero.

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3 years ago

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The answer is 45.0cm

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The weight of air measured in units of force per area is called _____.

laila [671]

The weight of air measured in units of force per area is called air pressure.

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A cube with sides of length 2cm has a mass of 7.36g . calculate the density of the cube

kondor19780726 [428]

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2 years ago

How many total oxygen atoms are in the compound Molybdenum (V) Dichromate?

alekssr [168]

Answer:

$1.2646\times10^{25}\ atoms$

Explanation:

-The chemical formula for Molybdenum (V) Dichromate is $Mo(Cr_2O_7)_3$

-There are 21 moles of oxygen per one mole of Molybdenum (V) Dichromate

-We apply Avogadro's constant to find the number of atoms of oxygen:

$Avogadro's \ Constant=6.022\times 10^{23} \ mol_1\\\\No\ of \ Atoms=Moles\times Avogadro's \ Constant\\\\=21\times 6.022\times 10^{23} \\\\=1.2646\times10^{25}\ atoms$

Hence, there are $1.2646\times10^{25} \ atoms$

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3 years ago