Recent content by sooty1892

I think I do. This is part of a much larger second order differential equations question where z = sin(x) is a substitution.

Ok. You're right that I don't use the chain rule but the product rule is used when differentiating dy/dx = dy/dz * cosx since there's 2 parts which both have variables.

Homework Statement Differentiate twice: z = sinx Homework Equations Product rule Chain rule The Attempt at a Solution dy/dx = dy/dz * dz/dx dy/dx = dy/dz * cosx Using the product rule: d^2y/dx^2 = d^2y/dz^2 * cosx - dy/dz * sinx According to the answer in the book...

Hi I was reading about long range sniper bullets been affected by gyroscopic affect with the spin of the bullet. I was wondering if Bernoulli's principle could be applied to this, as the pressure at one side of the bullet is greater than the other (depending on the rotation). Is this true and...

Hi I wasn't sure whether this is technically homework or not but anyway. I am building a miniature wind turbine for a basic project just for myself. I was wondering if there was anyway for working out the voltage gained from the generator. I know this could be gained from using P = IV but...