Recent content by kavamo

Thank you for your help. I was able to get help from a classmate in between posts and she helped me work it through. Thanks again.

I'm still a little confused. Am I doing this correctly? v = 1.710 x 10^33 eV =hc / E delta E = 1.1332 eV v = (6.626 x 10^-34) Js x (3 x 10^8)m/s divided by 1.1332eV = 1.754E-25

Planks constant units are J/s

I found the minimum photon energy required to study this molecule is 8.378 kev. will i use this in the above problem?

I think that all the units are in ev's but am not sure as they are not given. You have found the part of this thatis the hardest for me--units.

Homework Statement Find the wavelength of the radiation emitted when a hydrogen atom makes a transition from the n = 6 to the n = 3 state. Give answer in µm. Homework Equations z^2 / n^2 x 13.6ev delta E = E2 - E1 = hv The Attempt at a...

thank you I should have typed: 176100000m/s x (3x 10^8)x 30.75 (the answer from part a) = 5415075000 then convert from nano to meters (9 decimal spaces to the left) = 5.41 meters which is the correct answer. Thank you for your guidance. K

o.k. then, 176100000m/s x (3.075 x 10^-10) = 0.05415075 ~ 0.0542 and convert to meters = 5.4 m

I got the formula from my professor. As far as I can tell it is moving at 0.587c = 176100000 m/s for 25 ns. Distance = rate x time. So then I suppose I would do the following: 176100000 m/s x (2.5 x 10^-10) = 0.044025 meters?

Homework Statement I have correctly figured out part a but am stuck on part b. Thanks for your help in advance. An unstable particle called the pion has a mean lifetime of 25 ns in its own rest frame. A beam of pions travels through the laboratory at a speed of 0.587c. (a) What is the...

Thanks for your quick response. I figured out what I was doing wrong and solved it.

Homework Statement A surface of a substance has a work function of 2.24 eV. (a) What is the maximum kinetic energy of ejected electrons if the incident radiation is of wavelength 419 nm? eV (b) What is the threshold wavelength for this surface? nm Homework Equations E=hf...

Sorry, I got confused. So then to answer the actual question I multiply 0.8625 by 8.0 meters (0.8625)(8.0) = 6.9 m/s^2 Thanks.

Homework Statement An electromagnetic rail gun can fire a projectile using a magnetic field and an electric current. Consider two parallel conducting rails, separated by 0.575 m, which run north and south. A 49.0-g conducting rod is placed across the tracks and a battery is connected between...