3 years ago

A piece of iron has a volume of 11.6 cm3 and a mass of 63.5g what is its density?

1 answer:

8 0

D=m/v d=63.5g/11.6cm3=5.47g/cm3

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kodGreya [7K]

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Ulleksa [173]

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Murljashka [212]

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Molodets [167]

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alisha [4.7K]

Answer:

$E=9.62\times 10^{-21}\ J$

Explanation:

Given that,

The wavelength of a microwave is 7.42 mm or 0.00742 m

No. of photons, n = 359

We need to find the energy produced by this no of photons. It can be given by the formula as follows :

$E=\dfrac{nhc}{\lambda}\\\\E=\dfrac{359\times 6.63\times 10^{-34}\times 3\times 10^8}{0.00742}\\\\=9.62\times 10^{-21}\ J$

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So, the required energy is $9.62\times 10^{-21}\ J$ .

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2 years ago