Recent content by poohead

well i assume now you use wavelength= h/mv and to find v i'd use Ee=Ek, just i need to find relativistic mass and energy first for the speed ill get is faster then that of light

but still i don't understand the concepts of B)

okay so i understand A) you computed 1/5000 line/cm wrong, you should've used 1.0 x10^-2/ 5000 line/cm then plug 2.0x10^-6 in for the equation thank you for your help though

there would be four, but so i solved for d and i get 1.81x10^-6, so now i convert that into cm?

Homework Statement What is the de Broglie wavelength of an electron that has been accelerated through a potential difference of 1 MV ( you must use the relativistic mass and energy expressions at this high energy.) ans. 8.7 x 10^-13 Homework Equations M= Mo/ square root (1 - v^2/c^2)The...

well i think A) your trying to find θ for the 2nd order image right which would be m, and you know the wavelength 470nm and you know m=0.0002 cm. would this get me 28 degrees tho?

so i did what you said and the angle i get is 27, so where could i have gone wrong, what answer do you get?

Homework Statement k so An experiment is done to determine the half-life of a radioactive substance that emits one beta particle for each decay process. Measurements show that an average of 8.4 beta particles are emitted each second by 2.5 milligrams of the substance. The atomic weight of the...

like how would i get a

sorry I am still confused on how to get there, what would i possibly do with d?

sorry I am still not interpreting your answer, what would i do with 5000 lines/cm in inserting it into helping me solve for an answer

got it now I am trying part b thanks man

but wait, try it for yourself, apparently you don't get the given answer of -0.55 N, what is the answer u thus get?

i beg for help for i really cannot interpret the question, i am a poohead

Homework Statement three point charges are placed at the following points on the x-axis +2 uC at x=0, -3uC at x=40 cm, -5 uC at x=120 cm. find the force (a) on the -3 uC charge, (b) on the -5 uC charge ans. (a) -0.55N ; (b) 0.15 N uC=nano coulomb Homework Equations Fm=qvB ...