Recent content by virtuoso_735

Thanks. Do I need to conver it?

Okay thanks. So exactly is q though? I'm confused. Is it 32 in the problem above or do I need to solve for it? If so what equation do I use?

Hi everyone I need very badly some help with this problem please: A force of 0.053 N is required to move a charge of 39 µC a distance of 30 cm in an electric field. What is the size of the electric potential difference between the two points? Is the electric potential difference the...

Thanks for the help guys it was useful. nrqed, my physics teacher keeps on talking about the war in Iraq and how he used to play sports when he was younger and how he broke his leg going up a hill etc etc etc. He is easily distracted and constantly relies on a computer to give us lectures.

Nevermind...I got it. :)

Thanks for the help. The equation helped a lot. Here's another problem I'm having trouble with The velocity of a 640 kg auto is changed from 10.0 m/s to 44.0 m/s in 69.6 s by an external, constant force. What is the magnitude of the force? Do I use the equation F(change in...

Hi everyone. I have some simple momentum problems I am having trouble solving. Please help me. A 54.0 kg dancer leaps 0.33 m high. With what momentum does the dancer reach the ground? Well, I tried the momentum formula: p=mv. I plugged in 54.0 kg for the mass, and the velocity I put in 9.8...

How does the coefficient of friction fit into this? Sorry for all the posts.

Okay so I tried solving it but it didn't work again. So here is what I did: w=fd I solved for distance using sin(30)=1.10/d Then I plugged in d in the formula and I plugged in the f which is 230 N according to the problem and I got 104.55 but the answer doesn't match the book. Gah! :(

Do I have to use the coefficient of friction to solve this problem?

Okay so I find the distance of the hypotenuse of the triangle by the sin formula thing and just multiply by the force? Is it that simple?

I tried that, and I can't get the answer because there is the coefficient of friction, the angle, etc. etc. that I am not familiar with.

Hi everyone. I just found this forum and it looks like a good place to get some help on my physics homework. Anyways, this year, I have bad luck. I have a REALLY bad physics teacher (I'm not bashing on teachers here, but it's true). He doesn't do anything; we haven't learned ANYTHING from his...