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As far as we have learned (unless someone correct me if I am wrong), c is a constant that will always be the set number equal to the speed of light. A constant is an unchanging number, thus c will always be the same value and will always represent that value as the speed of light. The only possibility I can think of as to why c might be a different number is if it undergoes a conversion factor to fit the specific question being asked, but the starting number would still be the same value of c.
Since in class "c" has remained the constant for speed of light, I think it's safe to assume that whenever we'd encounter c in a problem/equation that it'd be used as a constant. I think Dr. Lavelle would've specified otherwise if that was the case!
From what I understand, the speed of light is always said to be constant c. c is also the fastest speed, so it is telling if an answer to a question is more than the speed of light because it must be incorrect.
From all the material we've covered, c is always going to be a constant (the speed of light), 2.998x10^8 m/s. In the future maybe there will be another variable, c, that could also be another constant, but until now, just know that its the speed of light!
Yes it is always the speed of light. It is given to us on the formula sheet as 2.99792 x 10^8, so just use that every time you see the variable or need to use the speed of light in calculations :)
Yes, C is the speed of light (a constant). In addition, it's important to note that C is the speed of all the electromagnetic radiation that we've learned thus far (radio, infrared, visible, UV, x-ray, gamma-ray), meaning that the frequency or wavelength does not impact the speed of light; it is always a constant.
According to the formula and constant sheet on the class website, c will always be the speed of light for the purposes of this class. However, there is another constant "C^2" that is called the second radiation constant.
In reference to the equation , the variable c should always be representative of the speed of light. The speed of light, c, is generally approximated to 3.00*10^8 m/s, however, more accurately is 2.99792*10^8 m/s. In terms of other cases where c is a considered a different variable, I would think those would be beyond the scope of the case, but I am not too sure. For now, I think there is no need to worry about c being another variable.
Yes, c is the speed of light. I originally had the same question too, but since this equation solves for the energy of a photon, which is basically a tiny package of light energy which travels at the speed of light, then c would have to be the speed of light.
Yes, c will always be the speed of light. It is constant, after all. The reason why it is a constant is due to the inverse relationship between wavelength and frequency. Whenever you double wavelength, you are halving the frequency, and when you multiply these two values together, you will always obtain the speed of light (3.00x10^8 m/s).
Yes, c is a constant equal to 3*10^8 m/s, and it is commonly used in equations c=(lambda)(nu)...in other words, wavelength*frequency. Another side note: the speed of light is lower case c. Please do not confuse it with C as in Celsius or C as in carbon!
The speed of light will always be represented by c (so far as I know!). However, the actual speed of light changes depending on what material it travels through. The constant c is the speed of light in a vacuum, but it will change if it's going through a different material.
Savannah Torella 1L wrote:When using the equation E= hc/ wavelength, is c always going to be the speed of light constant? Are there any instances were c is a different variable?
I think based on this class, it would always be used for speed.
c will always be equal to the speed of light. The speed of light does not change in a vacuum, unless acted upon by gravity. In the c = lambda nu equation, we assume we are in a vacuum with negligible gravitational force acting on the light.
Hope this helps!
Hope this helps!
In this class, c will always be the speed of light. Although this is technically the speed of light in a vacuum and light will travel slower through other substances, in this class we will just use this optimal maximum value.
When using the equation E=hc/wavelength, c is always going to be the speed of the light constant. This constant is approximately 3 x 10^8 m/s. There are no instances in E=hc/wavelength for which c will be a different variable.
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