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4 years ago

Calculate the speed of light if the wavelength is 3cm and the period is 1*10^-10

1 answer:

ioda4 years ago

6 0

First you find the frequency which is. 1/T(period) so u get 1*10^10
Now that you know frequency u can solve for speed: s= wavelength* frequency, but don't forget to convert 3cm into meters: 3/100= .03m so now you do (1*10^10)(.3)= 300,000,000 m/s or 3*10^8 m/s

Hope this helped :))

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3 years ago

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Explanation:

We know,

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η = Efficiency of the engine

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Q₁ = Heat available initially

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Given:

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$Q_2=3.78\times 10^3\times0.72$

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$\Delta S=\frac{\Delta Q}{T_1}$

$\Delta S=\frac{Q_1-Q_2}{T_1}$

substituting the values in the above equation we get

$\Delta S=\frac{3.78\times 10^{3}-2.721\times 10^3 J}{623K}$

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