Recent content by ballahboy

The physics involved in this experiment.. I've started with talking about gravity and air resistance. Is there anything else i can add to this?

Thanks for the suggestions. How can I explain the physics behind this?

thanks but is it just me or are the attachments not working?

Yeah i tried the paper helicopter thing but that only lasted me a little over 3 seconds

Our teacher supplied us with one 8.5x11 sheet of paper, 2 paper clips and 12in of masking tape. What we have to do is put this stuff together and release it from about 9 feet above the ground. I has to stay in the air for 8 seconds or more and land inside a box on the floor (which means it...

umm.. iono about that but I know that rsin(theta) is y and rcos(theta) is x.. would that be the same?

Ok. So i got that part where you replace x with x'cos(theta)+y'sin(theta) and y with -x'sin(theta)+y'cos(theta). My book shows us the proof for this using matrices. What my teacher wants us to do its prove this using polar equations or something like that. I started out with the drawing...

ok i got the correct answer now.. THanks a lot! :D

hmm so r=mv/qB is derived from mv^2/r=qvB. I got r=(1.4x10^-8)v. the thing is.. i don't kno the relationship between the time, radius and velocity. Do i use r to find the circumference and multiply that by the velocity? I am not really sure.. thanks for the response

A proton moves in a circular orbit perpendicular to a uniform magnetic field of 0.758T. Find the time it takes the proton to make one pass around the orbit. Just need someone to help me start off. All I have is that the B=0.758T, q=1.6x10^-19C and m=1.67x10^-27kg. What formulas do I need...

ok thanks a lot! i reallly appreciate it :-D

hmm.. is it m=1.67x10^-27? what is q?

yeah i got that but its not given in the problem..

hmm I am lookin for a right? so what am i suppose to plug in for m and q? im confused..

A proton accelerates from rest in a unifor electric field of 640 N/C. At some later time, its speed is 1.20X10^6m/s. Find the magnitude of the acceleration of the proton. Hmm.. not sure what formula to use on this one.. can someone help?