Recent content by Sam_Hawkins

  1. S

    Can Conservation of Energy Explain Particle Movement on a Frictionless Surface?

    Hi, could you please clarify exercise 87 here: http://www.physics.ohio-state.edu/undergrad/greStuff/Problems_2009/E&M_4.pdf ? I do not seem to understand why the magnetic field is of any significance whatsoever when the charged objects are in the outer region? thanks.
  2. S

    Can Conservation of Energy Explain Particle Movement on a Frictionless Surface?

    ah alright my bad lol :D well that is just retarded, I thought the problem is asking whether the point will slide all the way to the end of the sinusoid (where the line ends on the picture lol :D ). Ok now it is clear. thanks.
  3. S

    Can Conservation of Energy Explain Particle Movement on a Frictionless Surface?

    Okay, but I do think you know exactly what I meant. I will play your game then. Why can't I use the conservation of energy? For every initial speed u>0 it holds that at the bottom of the sinusoid the speed will be v+u where v=sqrt(4gd) which is by itself enough to overcome the gravitational...
  4. S

    Can Conservation of Energy Explain Particle Movement on a Frictionless Surface?

    allright, but why does the conservation of energy not apply here?
  5. S

    Can Conservation of Energy Explain Particle Movement on a Frictionless Surface?

    Homework Statement http://www.physics.ohio-state.edu/undergrad/greStuff/Problems_2009/Mechanics_4.pdf exercise 83 Homework Equations Conservation of energy?! The Attempt at a Solution Well what I think is that if there is no friction, whenever the initial velocity is >0, the...
  6. S

    Photo-conductive and photo-voltic devices

    Imho the difference you are looking for is that photoconductive devices only change their conductivity when exposed to light while photovoltaics actually generate electrical power by the means of voltage induced by EMR.
  7. S

    Calculus for the practical man

    Spivak calculus series seems to be appreciated by a lot of people...If you want something for the computation drill, Demidovich mathematical analysis book is the all time classic, even though it is now considered quite "hardcore" by some. It also includes the basics of theory you need to solve...
  8. S

    Schools Graduate school app - Do I have a shot?

    Hi! I am new to the board so let me first just say hello - Hello! :) To my question - you guys have more experience so your judgement is way more accurate when it comes to graduate physics studies, so I wanted to ask if I have a shot at any of the better (say top 50) physics institutions...
Back
Top