Mcdonald John
08/18/2024 · Junior High School
Visible light is emitted from the sun with a frequency of \( 4,5 \times 10^{13} \mathrm{~Hz} \). Calculate the wavelength of the visible light in \( \mu \mathrm{m} \), rounded to two decimals
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Calculate or simplify the expression \( \frac{3e^{2}}{4\pi\epsilon_{0}c^{3}} \).
Simplify the expression by following steps:
- step0: Solution:
\(\frac{3e^{2}}{4\pi \epsilon_{0}c^{3}}\)
The value of the constant \( \frac{3e^{2}}{4\pi\epsilon_{0}c^{3}} \) is approximately \( 8.9875 \times 10^{9} \) Coulomb squared per kilogram meter cubed per second squared.
Now, we can use this value to calculate the wavelength of the visible light emitted from the sun with a frequency of \( 4.5 \times 10^{13} \) Hz.
The formula to calculate the wavelength of light is given by:
\[ \lambda = \frac{c}{f} \]
where:
- \( \lambda \) is the wavelength of the light
- \( c \) is the speed of light in vacuum (\( 3 \times 10^{8} \) m/s)
- \( f \) is the frequency of the light
Substitute the values into the formula to find the wavelength of the visible light in meters:
\[ \lambda = \frac{3 \times 10^{8}}{4.5 \times 10^{13}} \]
Now, we can calculate the wavelength in meters and then convert it to micrometers (\( \mu \)m) by multiplying by \( 10^{-6} \) to get the final answer.
Calculate the value by following steps:
- step0: Calculate:
\(\frac{3\times 10^{8}}{4.5\times 10^{13}}\)
- step1: Rewrite the expression:
\(\frac{3\times 10^{8}}{45\times 10^{12}}\)
- step2: Reduce the fraction:
\(\frac{10^{8}}{15\times 10^{12}}\)
- step3: Rewrite the expression:
\(\frac{5^{8}\times 2^{8}}{15\times 10^{12}}\)
- step4: Rewrite the expression:
\(\frac{5^{8}\times 2^{8}}{5\times 3\times 10^{12}}\)
- step5: Reduce the fraction:
\(\frac{5^{7}\times 2^{8}}{3\times 10^{12}}\)
- step6: Rewrite the expression:
\(\frac{5^{7}\times 2^{8}}{3\times 5^{12}\times 2^{12}}\)
- step7: Reduce the fraction:
\(\frac{1}{3\times 5^{5}\times 2^{4}}\)
- step8: Calculate:
\(\frac{1}{150000}\)
The wavelength of the visible light emitted from the sun with a frequency of \( 4.5 \times 10^{13} \) Hz is approximately \( 6.666667 \times 10^{-6} \) meters.
To convert this to micrometers (\( \mu \)m), we multiply by \( 10^{-6} \):
\[ 6.666667 \times 10^{-6} \times 10^{-6} = 6.666667 \times 10^{-12} \, \mu \text{m} \]
Therefore, the wavelength of the visible light in micrometers is approximately \( 6.666667 \times 10^{-12} \, \mu \text{m} \), rounded to two decimals.
Quick Answer
The wavelength of the visible light is approximately \( 6.67 \times 10^{-12} \, \mu \text{m} \).
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