Recent content by wonder_boy

Okay, now I have a follow on question; 'A small wildlife unit etc etc requires a constant 1kW of electricity to operate. Water is diverted etc etc. to power the monitering station, assume that the water falls 10 m. (i) If the hydroelectric plant is 70% efficient, what volume of water r...

Yeah, I asked my dad, who is an electrical engineer, and he says that 200 megawatts is totally normal - in fact, one in our region generates exactly that. By the way, thankyou for your help. I will take more care is paying attention to the base units next time! Thanks, w_b

Okay...so let me test this...that would mean for an inlet pipe of h = 150m, and a diameter of d = 2m, and an efficiency of 80%, the power output would be 200322020 watts...wow... that doesn't seem right...hmm. I understand what you've said, but have I implemented it properly..?

So does that mean that my Ek value is the power output ? in other words, I use the 2 equations I have, put them into 1/2mv^2, and I have my generating capacity, in watts? I must still not understand - that sequence of units brings me to use the F=ma, then W = fs, and then P= W/t, exactly...

Haha, thanks. Your unit analysis makes sense. I understand where I am trying to get to now. Thanks, w_b

(a) a hydroelectric power plant has water falling a vertical heigh of h through an inlet pipe of diameter d to a turbine. Assume that there are no loses due to friction, turbulence, or similar effects. Use g = 9.8 ms^-2, be careful with units. (i) if the water is motionaless before it...

K, basically, have botho those values, teh velocity, and the mass. Now I am asked to work out the expression for the generating capacity of the turbine in watts. so I have, for a direct vertical fall of h, into a opening d metres wide, v = \sqrt{}(2gh) and m of the water falling through...

Okay, so the situation is a hydro-electric plant, assumed to have a vertical inlet pipe, of (s) metres high, and a opening to the turbine of (d) metres in diameter. The water is assumed to be stationary before it begins falling down the pipe (s) metres. So, I have the speed of the water when it...

Okay, I'm wondering if an investment that averages x% over the term of an investent and an investment with a fixed return of x% over the term of an investment are equivalent...I'm not really sure at all, and itas advised i can both explain and somehow graph this. Can anyone investigate my...