Search found 19 matches

Wed Oct 23, 2019 3:04 am
Forum: DeBroglie Equation
Topic: Conversions while working with de Broglie's
Replies: 2
Views: 49

Re: Conversions while working with de Broglie's

No worries!In this case, the SI unit is meters, so multiplying the top by 10^3 is probably the easiest option to get there. For arithmetic decisions like this, I just do whatever I feel more comfortable with, as there're many paths that you can take where you end up with the right option. Hey Mingd...
Wed Oct 23, 2019 12:27 am
Forum: DeBroglie Equation
Topic: Conversions while working with de Broglie's
Replies: 2
Views: 49

Conversions while working with de Broglie's

Hello, I am currently working on a textbook word problem, 1b. 15, that requires the used of de Broglie's Equation. I ended up with Planck's constant (in meters) over the the momentum (in kilometers). Would it be more efficient to just multiply the top by 10^3 or should I convert one quantity to matc...
Sun Oct 20, 2019 11:55 pm
Forum: DeBroglie Equation
Topic: Deriving the DeBrogile Equation
Replies: 8
Views: 110

Re: Deriving the DeBrogile Equation

While I think it's not totally necessary to memorize and know the derivation, it might prove to be helpful since the equations used to derive it are equations that we should know and memorize anyways! This way we can have a greater knowledge of how these concepts work together which could hopefully...
Sun Oct 20, 2019 11:50 pm
Forum: Photoelectric Effect
Topic: Intensity v Frequency
Replies: 5
Views: 79

Re: Intensity v Frequency

Kimme Chun 1I wrote:The frequency is referring to how much energy a photon has and the intensity is referring to how many photons are present.

I don't think they have a direct relationship since both can vary.
Sun Oct 20, 2019 11:44 pm
Forum: DeBroglie Equation
Topic: equation conversions
Replies: 2
Views: 57

Re: equation conversions

Petrina Kan 3C wrote:I have not seen this before. The DeBroglie equation cannot be used for light, so I'm not sure if it can be applied or combined with the equation for the energy of a photon?

It is a general rule that some equations cannot be used for light, and I think this may be one of the cases.
Sun Oct 20, 2019 11:32 pm
Forum: Einstein Equation
Topic: When do we use the Einstein Equation?
Replies: 14
Views: 409

Re: When do we use the Einstein Equation?

How often would you have to rearrange this equation to find other quantities? Should this be practiced?
Sun Oct 20, 2019 11:26 pm
Forum: Properties of Electrons
Topic: Electron Principles
Replies: 3
Views: 70

Re: Electron Principles

Gabriel Ordonez 1E wrote:Can someone please explain to a greater depth the following: Hund’s Rule, Pauli Exclusion Principle, and Aufbau Principle? Thank you in advance.

What exactly would you be looking for? The general meaning and use of these equations? I would love to help if you specified! :D
Sat Oct 12, 2019 2:10 pm
Forum: Properties of Electrons
Topic: wave properties of electrons
Replies: 4
Views: 26

Re: wave properties of electrons

I think it would just be less likely. The bigger it is, the less wavelike, right?
Sat Oct 12, 2019 2:02 pm
Forum: Properties of Light
Topic: Speed in a Vacuum
Replies: 2
Views: 23

Re: Speed in a Vacuum

Speed in a vacuum is defined as c= 3.00*10^8 m/s, which is a constant while measuring other speeds/variables in the electromagnetic spectrum topic. A formula given from the lecture is c=\lambda \times v , which is (the speed of light) = (wavelength) x (frequency). You can use the speed of light, a ...
Sat Oct 12, 2019 1:49 pm
Forum: Properties of Light
Topic: Amplitude
Replies: 12
Views: 170

Re: Amplitude

Megan_1F wrote:What is the relationship between amplitude and intensity of light?

According to the school Physics website, "The intensity of a wave depends on its energy and the energy varies in a different way from the amplitude.". Hope this helped.
Sat Oct 12, 2019 1:10 pm
Forum: Properties of Light
Topic: What exactly is diffraction?
Replies: 3
Views: 46

Re: What exactly is diffraction?

Hey Alice,

I had the same question! I just assumed it was some typeof divergence, but the definition seems to be exclusive to this topic.
Sat Oct 12, 2019 1:04 pm
Forum: Balancing Chemical Reactions
Topic: Conservation of electrons/protons
Replies: 7
Views: 283

Re: Conservation of electrons/protons

Ethan Lam 4A wrote:Does the charge conservation work for ions too?

I, too, had this question. Can anybody elaborate? I saw an example with an ion and I was confused.
Sat Oct 12, 2019 1:01 pm
Forum: Properties of Light
Topic: Speed in a Vacuum
Replies: 2
Views: 23

Speed in a Vacuum

When is the speed in a vacuum used? Does anybody have any broad examples of when it is used?
Sun Oct 06, 2019 9:20 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical Ratio Rounding
Replies: 6
Views: 102

Re: Empirical Ratio Rounding

As I've said in a previous reply to another post, I would say that you should round if the decimal is .1 or .2. Anything larger would lead to inaccurate results because a false ratio. Thanks for posting this! :D
Sun Oct 06, 2019 9:16 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Showing work in detail
Replies: 7
Views: 305

Re: Showing work in detail

I would recommend it as it is still correct; however, if you don't have much time, it is probably best that you imply them instead of explicitly adding them to your work.
Sun Oct 06, 2019 9:13 pm
Forum: Balancing Chemical Reactions
Topic: Fractions
Replies: 34
Views: 517

Re: Fractions

I'm guessing it's always best to make the fraction into an integer. I've heard that that is the way it's done in the scientific field and that it is preferred by many since it is more user friendly for future calculations.
Sun Oct 06, 2019 9:09 pm
Forum: Empirical & Molecular Formulas
Topic: empirical and molecular formulas
Replies: 7
Views: 93

Re: empirical and molecular formulas

Remember to not be tricked! Sometimes many of my classmates forget to add the molar masses to compare it to the molar mass of the initial compound. It is always worth checking!!
Sun Oct 06, 2019 9:05 pm
Forum: Empirical & Molecular Formulas
Topic: Rounding vs. Multiplying
Replies: 4
Views: 80

Re: Rounding vs. Multiplying

My TA told us that rounding when the decimal was .1 or .2 was acceptable, while bigger numbers such as .3 are better multiplied. :D
Sun Oct 06, 2019 8:53 pm
Forum: SI Units, Unit Conversions
Topic: Unit Conversions
Replies: 6
Views: 137

Re: Unit Conversions

Hey DTingey_1C!

I'd recommend using flashcards associate these unit prefixes to the actual values of each one. :D. It helped me so much in high school.