Recent content by Trekky0623

Ah hah! Thank you so much. I feel silly.

The string in the Figure is L = 118.0 cm long and the distance d to the fixed peg P is 99.1 cm. When the ball is released from rest in the position shown, it will swing along the dashed arc. How fast will it be going when it reaches the lowest point in its swing? What about the highest in its...

Is there a mathematical proof or derivation for [FONT="Times New Roman"]E = mc2, and if so, where can I find it?

I need to know how to start this. Basically, I'm trying to isolate x on one side, so that I can input f(x) and solve for x, instead of the other way around. Image: http://img146.imageshack.us/img146/8869/tempng8.png

1. log(x) is equal to the number that you must raise 10 to in order to get x. 10^(log(x)) = x. Logarithms are exponents. 2. log(10) = 1, since 10^1 = 10. So 10^(log(10)) = 10^1, or 10.

So let's assume we have a positive whole number, n. -n = -1 * n So let's just say n is 3. You're adding -1 three times (-1) + (-1) + (-1) = -3 When multiply by a negative, instead of addition, we use subtraction, so: (-1) * (-3) = -(-1) - (-1) - (-1) So (-1) * (-3) = 3