Recent content by skull

Does anyone know why, mathematically, a projectile gets the maximum range when launched at 45 degrees?

OMG sorry about that! I forgot to include the branch names. Assume the branches are bromine

Which of the following is most stable. Ortho, meta, or para benzene? Also, why is this the case. Thank you in advance

apparently the above answers arent corect. ANyone else klnow if that chain is some special group with its own name?

i really don't know where to start on this one. I know the main chain is nonane. The branch looks like isopropyl with a methy on it. However i don't think that's the right answer. All help is greatly apreciated! http://img125.imageshack.us/img125/1273/chemsk0.png

Ok so here's a homework question. I honestly don't know where to begin. A prism with an apex angle of 40 degrees induces a minimum deviation of 20 degrees. What is the prism made of. Judging by what the question is asking for, I think I need to find the refractive index thru Snells law...

i don't fully understand that part

anyone know?

Ok, first question, where does the Ek come from. It is not in any other equation, doesn't it have to be in order for me to derive i?

Ok these are the equations I am allowed to use. Ep=mg(delta)h w=fd v_av=(delta)d/(delta)t (delta)d=v1(delta)t^2 + 1/2a(delta)t^2 V2=V1^2 + 2a(delta)d w=work done(j) f=force(Newtons) d=distance(m) v_av=average velocity t=time(secs) v2=final velocity v1=initial velocity a=acceleration...

are you sure it can't be done w/o calculus? My friend did it and got -C/(3a) + C/a Is this right? If it is, i don't understand why there is a -c in the equation.

Ok, I got joule metre as the unit. Is this right? Is this also know as a Newton?

I thought your earlier post was implying that i did not give enough information. Can I still find the units?

Oh my bad, i just misread

I said F is constant