Recent content by Little Dump

That's exactly how I did it. I got maple to do it for me, and then I did it by hand. Same thing.

This isn't really a homework question. I'm just trying to figure things out for myself about resonance in a circuit that they haven't taught us yet. Say you have a circuit Rp || L || C and you have a sine source and some load connected to it call it Re and you want to mesaure the gain. Vi...

I was in chemistry class today and I wasn't really paying much attention because its all quite simple stuff we're doing (systems in equilibrium) and my professor mentioned a Lithium compound that got me thinking. Why do I never see anything made out of a lithium compound? Its directly...

I still want to know what's wrong with this answer because it does not yield 10pi/3 \int_0^1 \pi (-y+3)^2 - \pi (y+1)^2 dy

I'm rotating horizontal rectangles around the y-axis therefore each rectangle will make a circle

but i get the wrong answer so can you point out what's wrong with my formulation? keep in mind i moved the triangle to (1,0),(2,1),(3,0) because its the same problem correct?

does mine not make sense for some reason i am calculating the area of the circle when the farthest line is rotated and then subtracting the area of the circle when the closest line is rotated

I haven't learned that theorem so I don't really think I should use it. I'm trying to use horizontal rectangles for my area so I formulated the following integral which is how I was taught how to do questions like this. \int \pi r_o^2 - \pi r_i^2 dr where r_o=(-y+3) r_i=(y+1)...

I don't quite understand it and I don't understand why mines wrong :( I'll keep trying to figure it out.

Included is my attempt at the following question. I get an answer of 10pi, whereas the right answer is (10pi)/3 from my textbook. Here is the question: Rotate the triangle described by (-1,0),(0,1),(1,0) around the axis x=2 and calculate the volume of the solid. I basically changed the...

Still no good more lost then ever :\ Perhaps someone else has a suggestion?

Alright but I still don't get the right answer. Should i maybe analyse the ball instead of the loop? Im really lost

Ok there's this ball rolling down a ramp. The ball has some radius r and some mass m. At the bottom of the ramp there is a loop. The loop has radius R. The question is, if the ball is 1/4 of the way completed the loop, what is the horizontal component of the net force on the ball. And it is...

Ok there's this ball rolling down a ramp. The ball has some radius r and some mass m. At the bottom of the ramp there is a loop. The loop has radius R. The question is, if the ball is 1/4 of the way completed the loop, what is the horizontal component of the net force on the ball. And it is...

I got all of them except b now is my formula for b right? cuz i get the wrong answer