Recent content by talebone

thanks Simon, got it! (yes you are right the two V's are meant to be capital) Q1 b has to be L3 according to the rule of sums. Q2 pressure = F/A = N/m2 = kg m/s2 x 1/m2 = kg/ms2 = M/LT2 so M/LT2 + a/(L3)2 then a = ML5/T2 Q3 (M/LT2)(L3) = ZT ML2/T2 = ZT work = FD = Nm = kgm/s2...

Homework Statement An equation of state that has been used to model the behaviour of a fixed amount of a real gas is (p + a/v2) (V - b) = ZT In the equation, Z, a and b are constants, and P represents pressure, V represents volume, and T represents temperature. The constant Z depends on the...

Lol haruspex I can see your point. I'm just wondering why they chose to express it as a fraction instead of 1.875Q. I guess I thought maybe there was an easier way to arrive at the answer than the way I did. There probably isn't, thanks for your patience.

ok. say I ignored the +/- on each charge. if I added all the charges available (2, 1, 2, 3) that's 8 charges. is that where the 8 comes from? but I can't imagine where 15Q comes from.

hms, thanks for that but the way I got my ANS does not give me the format shown in the list of answers. could you give me a clue as to how the given ANS is formatted as such? thanks.

thanks for pointing that out, typed it by accident. any clue on the second question?

yeah dumb me. thanks! k(Q)(2Q)/d12 = k(2Q)(3Q)/d22 k2Q/d12 = k6Q/d22 d22 = k3Q(d12)/k3Q d2 = √3Q d1

where is the error? maybe I'm tired but I've looked over it a hundred times! ok second questions let's try: 1. at R, the net charge will be -Q. so each sphere will have -0.5Q 2. at S, the net charge will be +1.5Q. so each sphere will have +0.75Q 3. at T, the net charge will be +3.75Q, so each...

1. Homework Statement Three small identical metal spheres carry electric charges, +Q, +2Q, and +3Q. The centres of the spheres lie in a straight line at fixed positions R, S and T, such that the distance between the spheres at R and S is d1 and that between the spheres at S and T is d2. Assume...