Recent content by Jeff12341234

It still creates arcs through the air even when there is no metal nearby. I was wondering if a fly within range would be a path of least resistance for the electricity built up in the coil

I didn't know this was such a hard question to answer..

Will the high-voltage arc from a tesla coil zap flying insects like mosquitoes if they are close enough to it but are still airborne?

ok, so for the people reading this in the future, the actual useful info so far is; Cylinder: z=\pm\,\sqrt{\text{radius}^2-y^2} Sphere: z=\pm\,\sqrt{\text{radius}^2-x^2-y^2} Bowl: z=\frac{1}{radius}(x2+y2) Cone: z=\frac{1}{radius}\sqrt{x^2+y^2} That pretty much covers it I think.

Depends on you and your instructor I guess. I just finished DiffEq this semester. Made A's in all of my math classes since the beginning of college. If you ask me anything from those classes I will have to look it up though. The only benefit the class gave me is that I know it exists and I can...

I just wanted a quick reference of all of the solids, solved for z in Cartesian coordinates, not a lesson on learning them again. There is no long-term benefit to re-learning these equations. I will forget them again anyway. I just need a reference. I'll eventually have them listed and then some...

For anyone's future reference, here's the answer for a cylinder: Centered on the x axis: z=\pm \sqrt{radius2-y2} Centered on the y axis: z=\pm \sqrt{radius2-x2} Now we just need the other ones..

(x−h)2+(y−k)2=r2 That's the equation of a circle and it is of no use in answering my question. Let me explain it another way. Let's way you had to make a cylinder show up on a 3d graphing calc that only uses Cartesian coordinates. Ignore everything else and simply accomplish the goal...

ok so center it on the y or x-axis instead. Then you will have two equations which combine to graph a horizontal cylinder. What would that equation be?

It must be possible to graph a cylinder in Cartesian coordinates.. I've taken calc 3. I'm familiar with the other coordinate systems and their benefits. I literally want what I was asking for which is the equations, in rectangular form (hence the "entered into a graphing calc" statement), for...

I've tried googling this but I can't find the answer. I'd like all of the common 3d shape equations if someone has them. THEY HAVE TO BE SOLVED FOR Z so they can actually be graphed on a 3d graphing calc. For some crazy, crazy reason, these equations are never listed solved for z or, don't even...

So is that right?

So I was doing it right.. The answer was kinda big so I thought I made a mistake somewhere.

y"-8y'+20y=tet, y(0)=0, y'(0)=0 I need to know if I made a mistake in getting to the step below: L-1{ 1/[(s-1)2(s2-8s+20)] } because when I solve that, I get something pretty gnarly..