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2 years ago

The wavelength of red light is 7 x 10^-7 meter. Express this value in nanometers

Physics

1 answer:

3241004551 [841]2 years ago

6 0

The wavelength of the red light in "nanometer" is 7× $10^{2}$

Wavelength is given as : 7× $10^{-7}$ meter

1 nanometer = ( $10^{-9}$ meter)

Let X= value of the wavelength in nanometer.

1 nanometer = $10^{-9}$ meter

X nanometer = 7× $10^{-7}$ meter

If we Cross multiply

X nanometer = ( $\frac{ 7* 10^{-7} }{ 10^{-9} }$ )

X= 7× $10^{2}$ nanometer

Therefore, the wavelength in "nanometer" is 7× $10^{2}$

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3 years ago

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Answer:

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3 years ago

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Answer:

$613,077

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First step is to calculate the depreciation expense for the year 2019 and 2020 using this formula

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Let plug in the formula

Depreciation expense= ($9,300,000 - $1,300,000) ÷ (20 years)

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Second step is to calculate the book value for the year 2021 using this formula

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Let plug in the formula

Book value= $9,300,000 - $400,000 × 2

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Last step is to calculate the depreciation for 2021 using this formula

2021 Depreciation=(Book value-Residual value)÷Useful life

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3 years ago

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