Recent content by KoGs

By "three points" do you mean "three charges" ? There is one key concept you must use when dealing with charges, that is the concept of superposition.

Write one variable as a function of the other. So y = x^2, or whatever.

haha oh Vertex form. Well what points make our Area maximum, and what points make our Area minimum? And in fact that is vertex form what I have. A = -1( L - 40)^2 + 1600 IS vertext form. Does it remind you of something? hint: equation of a straight line. y = mx + b. Now what...

Complete the square A = 80L - L^2. A = -1( L^2 - 80L) A= -1 (L^2 - 80L +1600) +1600 //note it's +1600 at the end because we have to multiply it by -1. So we are left with: A = -1(L - 40)^2 +1600. Now it's clear to see that to maximize A, we have to minimize the -1(L - 40)^2 term...

Hold on. Let's go back up here: 2L+2W=150ft.- 10ft. 2L+2W=140ft. 2W/2=140ft-2L/2 W=140ft-L for a second. There is something wrong here. If you divide 1 term by 2, you must divide ________ terms by 2. There is also something else wrong here. You are told you originally have 150ft...

Could you explain why one and not the other? Thanks.

When the ball is not slipping, you can say something about the normal force.

So in the example I just gave the limits of integration would be... 2 to 7? Or would it be from -7 to - 2 ?

Haha, you're right. Thx for the help. What would happen if say we weren't inside a loop. But we still wanted to calculate the magnetic field generated by a wire that isn't infinite. These calculations we used here assumed the point we are trying to calculate at is perpendiuclar to the...

Ok I lied. A could also be = 2, and J = 1.

A = 6, J = 3.

Ok I guess it is important that B + C is odd afterall. We have an equation H - G = 3. This tells us H - G is odd. Because either H must be odd and G even, or H must be even and G odd. An odd number * an even number gives an even number. So GH is an even number, likewise FGH must be an...

Actually I guess it's not that important. But if you separate the equation to be: (A/J) * [(B + C)(D - E) - F(G*H) ] = 10 This tells you A/J either = 2 or = 5, as there is no way to get a fraction from what's left. Now we know A/J must = 2. Because in order for A/J to = 5, A must be 10...

Right off the bat it tells you C - B = 1. This tells you something about C + B. In particular it tells you C + B = odd number. This becomes very important as you are asked to multiply (B + C) (D - E).

Haha I like your teacher. This is my kind of problem. Give me a moment.