Recent content by feelau

np thanks for the verification

hm you seem to be using the wrong formula, in this case we are not measuring the intensity but using: distance from central max= (wavelength * distance to screen*order number)/spacing of slits. Hoped that helped

hm...interesting, I'll definitely be doing more problems for practice. Thanks

Hm I think they are the same thing. My textbook says it's that way, the only difference is the 90 degree phase change. But would be method be correct?

Homework Statement A thin film of oil (n = 1.23) is located on a smooth, wet pavement. When viewed perpendicular to the pavement, the film reflects most strongly red light at 640 nm and reflects no light at 569 nm. How thick is the oil film? Homework Equations...

so do i just substitute all of those equations into x^2yz and take the derivatives once in respect to u and then once in respect to v?

Homework Statement Let f(x,y,z)=x^2yz. Express f*dA in terms of u and v. The Attempt at a Solution We're given that x= u+v y= u-v z= u^2+v^2. The main problem I'm having is that I know I need to take partial derivatives in respect to u and v but I'm not sure how. I did an easier...

oh thanks very much

well net force should be zero but then would it mean F(magnetic)= mg or I am not sure what it would be equal to?

Homework Statement So a long straight wire lies on a horizontal table and carries a current of 1.2x10^-6A. In a vacuum, a proton moves parallel to the wire(opposite the current) with a constant speed of 2.3x10^4 m/s at a distance d above the wire. Determine the value of d. You may ignore...

nevermind, i found out how to solve it

the concentration isn't given, I copied the exact problem.

Homework Statement Kk so the problem is that we have 55.48 ml of NaOH was required to titrate 25 mL of a weak monoprotic acid. After 31.64 mL of NaOH had been added, the pH is 4.96 for the solution. Calculate the Ka and pKa for this weak acid. Homework Equations pKa= pH +...

Thank you so much. I've never seen any problems with this question so I had no clue. Thanks!

chem question please help Homework Statement Ok, so there's .9734 g sample which contained monoprotic benzoic acid C6H5COOH and it's dissolved in 75 mL of water and titrated to the equivalence point with 31.78 mL of .09251 M NaOH solution. a) how many moles of benzoic acid were titrated b)...