Recent content by bacnka

I'm using m1u2+m2u2=m1v1+m2v2 So I substitute in my values and get: 0.05x0.5 + 0.05x0 = 0.05x0.2 +0.05v 0.025 = 0.01 + 0.05v 0.015 = 0.05v v=0.30 m/s But if you equate KE, assuming ½mv²=½mv² so v²=v², 50^2 = 20^2 + v^2 v^2 = 2100 v = 45.38. Why am I confusing myself?

I have a problem, I'm trying to work out this simple equation and I'm confusing myself. This is the question: a white snooker ball hits a stationary red ball elastically at speed of 50cm/second, and both move off at different velocitys. if the balls are the same mass(50g) and the final...

I'm doing an experiment (at A-Level) to see the efficiency of a wind turbine. I'm doing this by changing the number of blades and varying the wind speeds. I wondered if anyone had an equation that could look at efficiency? I have the current and the voltage (and wind speed). Sorry if I've...

I wonder if anyone could shed some light or information about the subject I'm looking into. How will wind turbines with varied amounts of blades perform in varied wind speeds. E.g. the less amount of blades you have the better a turbine will perform at higher wind speeds? Any help on the...