Speed of light constant

[paulacamara1E]

When reviewing the properties of light Dr. Lavelle gave as the constant c as 3.00 x 10ˆ8 m/s. I understand that this constant will always be given and that it is part of a formula but I was quite confused as to which type of problem/when would we use this constant?

[404975170]

this is the speed of light in a vacuum so this constant is wavelength x frequency

[Chem_Mod]

You will see this constant in the wave equations f=c/λ which relates wavelength and frequency. If given frequency of an electromagnetic wave and asked to find the wavelength, then you would use the speed of light constant.

[Taizha 1C]

Do we need to memorize the speed of light in different conditions for the exam?

[Jennifer Ma 1G]

Do we need to memorize the speed of light in different conditions for the exam?

I believe that such constants will be given to us on the exam.

[Komal Prakash 1H]

The speed of light constant, c, will be provided to us as previously mentioned and can be used in a variety of problems. We recently have also begun to conduct calculations using E= h x v as well as En= (-h x R)/(n^2). These questions often give us energy levels that electrons transition from and require us to find wavelength. Since the equation c=wavelength x frequency is needed for wavelength, we would need to use c in these types of problems as well.