47 posts • Page 1 of 1
On our constants and equations sheet, the italicized v stands for the greek letter nu, which is the variable for frequency. The regular v stands for velocity. On that sheet specifically, c = λ v and E = hv are the only equations that use the greek letter nu (frequency). Hope this helps!
For my frequency v, I just make have a little tail in the beginning instead of being a straight v. So the fancy v is for frequency and the normal v is for velocity. Hope this helps!
Also, in equations, velocity and frequency shouldn't be used together in the same step for what we're working on. For example, velocity should only be found working with kinetic energy of an electron or with momentum in the Heisenberg Uncertainty Principle, otherwise frequency will be used such as in the speed of light or energy of a photon.
Hi! On the formula sheet, velocity is written as a normal v whereas frequency is written as an italicized v. However, it best to know which equations involve velocity or frequency for a better understanding of the material. For example, KE involves velocity, not frequency and the Bohr frequency condition involves frequency, not velocity. Hope this helps! :)
Yes, the font is different depending on if it stands for frequency or velocity. But also understanding what each equation means will help. Ex. Typically if wavelength is involved, they are referring to v as frequency. versus if mass is involved they are probably using velocity.
A 100% sure-fire way to ensure that you aren't mixing the units up is by actually canceling out the units and making sure that both sides of the equation are equal. Velocity is m/s while frequency is only /s. Another way to intuitively gauge it is, when the particle in question has a mass it's usually velocity.
Hi! First, what everyone said about the different font is a great way to check! In case you want to double check, I always cancel out my units to make sure. If the units of velocity or frequency don't match the other variables or constants in the equation, you know you have the wrong one!
The v in the equation E=hv is actually the Greek letter nu. In the equation sheet it seems like it is slightly italicized so that might be one thing to look out for. For velocity, it is just the regular letter v.
My TA recommended since Week 1 that we differentiate our variables with specific font. You may choose to exaggerate your "v" for frequency by writing it in cursive or even write it like the zodiac symbol for aries. Whatever helps you visually remind yourself NOT to mix it up with the regular font "v" for velocity. Hope this helps!
In most cases, velocity deals with a matter that has mass (electrons, neutrons, etc.) whereas frequency deals with wave-like properties, typically found in light. In addition, it is important to keep in mind the conceptual idea behind each equation which will help you understand which equations contain velocity versus frequency.
Hi! On our equation sheets "v" for frequency is italicized and "v" for velocity is not. One way that helps me remember is to look at the context of the problem, for example if you are dealing with kinectic energy or momentum, then "v" will be velocity. I hope this helps!!
E=hv and[ C=lamba x v ]is relating to energy and wave properties of light, so v in the different font would be frequency. In de Brogiles equation and kinetic energy equation they deal with speed/motion of particles in some way so v would symbolize velocity.
Depending on the equation I am using, I would try to make sense of how that equation was derived. This then would clarify whether v is frequency or velocity. For example, de Broglie's equation is based on the momentum of the electron so I would think of that v as velocity, while in the speed of light equation and the energy equation I would think of waves of light where the v is frequency. But like others were saying on this post the italicized v is typically frequency and the regular v is typically velocity.
On the formula sheet, the frequency notation is italicized while velocity is not. When doing your calculations, make sure you correctly write an italicized v when using frequency and a normal v when doing velocity so as to avoid confusion.
On the formula sheet, E=hv and c=λv are the only formulas that have the curved v (otherwise known as nu) in them. If you look closely, every other v looks normal, indicating that they symbolize velocity.
I try to remember that the "v" that represents frequency is not actually a v. It is really the Greek letter nu. As such, I draw it differently than a regular "v" by making it more slanted and curly.
When I am writing equations or using a variable with frequency and velocity, I try to put a mark/tail in front of v for frequency. On the formula sheet, the italicized one is for frequency, and the normal v is for velocity. Also, it would probably be helpful to go over the formula sheet and try to memorize which one is needed for each formula, so you don't need to decipher each time.
It is very confusing I agree but if you look closely on the lecture slides as well as the formula sheet we are given the v for frequency is actually italicized and represents a Greek letter whereas the normal English v refers to velocity
When i write them down I deliberately make v=frequency as like a cursive looking one and the velocity in my own handwriting. The best way to know is on the equation sheet is just to remember which equation uses which. Most of the time it will be for frequency, unless you're calculating momentum.
velocity is a lowercase v, while frequency is curved. I think it helps that in most of the equations so far, v (for velocity) deals with the movement of electrons, and v (for frequency) deals with light
Typically nu denotes frequency, which looks like an italicized v. A diligent way to confirm whether or not it is velocity or frequency is to check the units! Velocity is in m/s whereas frequency is in Hz. Typically the speed of light is denoted with "c"
Who is online
Users browsing this forum: No registered users and 1 guest