Search found 6 matches
- Thu Oct 19, 2017 4:32 pm
- Forum: Einstein Equation
- Topic: HW 1.25 (b)
- Replies: 2
- Views: 744
Re: HW 1.25 (b)
Think about it this way... In the question part A, we were looking for the energy of one photon given the wavelength. With this information we then could use E=hc/λ to get 3.37 x 10^-19. However, in part B we are given how much Sodium is present in mg. Now we are being asked to find the energy of mu...
- Sun Oct 15, 2017 4:07 pm
- Forum: Properties of Light
- Topic: Formulas [ENDORSED]
- Replies: 5
- Views: 751
Re: Formulas [ENDORSED]
thank you so much!
- Sun Oct 15, 2017 1:24 pm
- Forum: Properties of Light
- Topic: Formulas [ENDORSED]
- Replies: 5
- Views: 751
Formulas [ENDORSED]
Hi guys! In lecture we were given the formula En=-hR/n^2 and in the book v=R(1/n2^2-1/n1^2). What is the difference between these two formulas and in what cases would I use them?
- Wed Oct 11, 2017 5:04 pm
- Forum: Properties of Light
- Topic: Question 1.23
- Replies: 2
- Views: 525
Re: Question 1.23
Hi Esin,
An electron volt, symbolized as eV, is a unit of energy. It is equal to approximately 1.6x10^-19 joules (J). One eV is equal to the amount of energy one electron aquires by accelerating, from a resting state, through a potential difference of one volt.
Hope this helps!
An electron volt, symbolized as eV, is a unit of energy. It is equal to approximately 1.6x10^-19 joules (J). One eV is equal to the amount of energy one electron aquires by accelerating, from a resting state, through a potential difference of one volt.
Hope this helps!
- Thu Oct 05, 2017 9:00 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: HW Problem E35
- Replies: 5
- Views: 1092
Re: HW Problem E35
ahhh thank you guys so much, I really thought that I was making a mistake! Didn't consider it was just a textbook error!
- Mon Oct 02, 2017 7:03 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: HW Problem E35
- Replies: 5
- Views: 1092
HW Problem E35
Hello friends, The problem is: If all the hydroxyapatite is converted into fluorapatite by what percent does this conversion increase the mass of the enamel? The molar mass of hydroxyapatite is 502 g/mol and fluorapatite is 504 I started this problem by finding the difference between these and got 2...