Recent content by yan_plusheartz

Okay. Here's my new working. Is it correct ?

Okay, now that you have explained this to me , I kinda have a rough idea about the question. So here's my working:) is it correct? However, I can't really relate the last proportionality you explained just now to me . In my working, I just times 1/10 to the force (load) , length and also...

If that case, the wind energy is 1/2 m (10)*2 am I right? Problem is , I don't have the value of mass and time :(

Yeah I understand that it is not exactly the same. But my problem is , I don't have the value for F and v . And the only formula I know for power is force x velocity. So I did it by using the values given to derive a unit which is the same as power. But I can't seem to get the right answer. and...

Relevant formula : p(out) / p (in) x 100 percent = efficiency My question My approach But the right answer is 650kW

Oops my mistake, it's question 19 actually. It is stated that linear dimension of the model is 1/10 of the full size So e is directly proportional to Fl/A since E is the same for both Hence e model = (1/10)F x (1/ 10) l / (1/10) A e full size = F l /A e model ...

Homework Statement Hey, I have problems solving this question. May I know how to solve this question. Somehow, the answer I got is to the power of negative. can someone show me the step by step solution to this question? (Question 18 from this paper) the link is below...