what is the wavelength and frequency if the wavelengthis4.5x10-7 Show wok please
(-7)
You have already stated the frequency. Are you talking about light? What are the units of wavelength? meters? cm? feet/
frequency = (wave speed)/(wavelength)
You can do the numbers. Make sure the dimensions are consistent.
sorry don't know
Light is gathered from a distant galaxy and one of the spectral lines is observed at 500 nm when it should be 400 nm. The velocity of this galaxy is _____ km/s.
No problem! I can help you figure it out. The unit of the wavelength needs to be specified in order to solve for the frequency. Assuming the wavelength is given in meters, we can proceed with the calculation.
To find the frequency, we can use the equation:
frequency = wave speed / wavelength
The wave speed of light in a vacuum is approximately 3.00 x 10^8 meters per second.
Substituting the given values:
frequency = (3.00 x 10^8 m/s) / (4.5 x 10^-7 m)
To simplify this, you can divide both the numerator and denominator by 10^-7, which is the same as multiplying by 10^7:
frequency = (3.00 x 10^8 m/s) / (4.5 x 10^-7 m)
= (3.00 x 10^8 m/s) / (4.5 x 10^-7 m) x (10^7/10^7)
= (3.00 x 10^8 x 10^7) / (4.5 x 10^-7 x 10^7)
= (3.00 x 10^15) / (4.5)
= 6.67 x 10^14 Hz
Therefore, the frequency of the light with a wavelength of 4.5 x 10^-7 meters is approximately 6.67 x 10^14 Hz.