Recent content by Nikola Tesla

For the first one, I got to, x+6 - 3(square root of x+6) = 30 lol I don't know what to do next, I think I'm supposed to get rid of the three, but I'm not sure how.

If f(x)=x^2-3x and g(x)=in square root of x+6, solve for x if f(g{x))=30 Also, factor this expression and simplify if necessary: (x+5)^2+6(x+5)(x-4) Thanks.

^That is exactly what I'm trying to do. Can you help me out?

I made something of a kinetic sculpture for a project in class. The problem is, I'm having trouble describing the physics principles behind it. Here is the kinetic sculpture in a nutshell, so to speak. A mini fan, powered by batteries, makes a propeller move. There's two "resonance chambers" of...

I get the hint, 9.8 m/s2. But, how do I solve? Do i go: 0.06x0.5 = .5(0.06) x Vsquared because GPE = KE, and then just cancel?

Drop a 0.06kg egg from 0.5m above the frying pan. what is its kinetic energy when it hits the frying pan? what is its velocity the instant before it hits the pan?

Hmm, I see. Thanks for taking the time to answer.

I am talking about percent efficency of output work over input work. So, are you sure that the less pulleys involved, the better efficiency? Also, let's exclude friction. I'm not talking about Mechanical advantage, though. However, is there a way of knowing how to calculate the mechanical...

Does a pulley have more efficiency if it has just one of those cirgular thingies http://upload.wikimedia.org/wikipedia/en/8/8f/Pulley_class2.PNG or more http://www.kirkwood.k12.mo.us/parent_student/khs/BartinJ/four_pulley.gif An explanation would be helpful as well.

Thanks guys, I wasn't really sure what I was even looking for. :(

What law or physics principle is that? Thanks for the help.