Recent content by lmnt

  1. L

    Ray Optics (Refraction Theory)

    oohhkay thanks for clarifying, and i attached a picture, but i don't really noe where that went...anways, it showed a hemisphere with rays coming at it from the right...like p·( <--- and point · p would be at the centre of the curve. So then, from what you're saying, the focus point...
  2. L

    Ray Optics (Refraction Theory)

    Homework Statement Paralel light rays travel from air to a glass hemisphere with radius R and index of refraction n_{g}that is greater than n_{air}. A top view is shown in the attached image. (a) Where do the rays focus relative to the point P? (b) The index of refraction of the...
  3. L

    Fluid Dynamics (flow rate, Re,)

    Homework Statement An average person has about 5 litres of blood in their body. The heart circulates all this blood around the body in only about 1 minute. Find the time averaged volumetric flow rate Q of the aorta, which is a pipe of inner diameter 2.2 cm. Find the time and space...
  4. L

    Calculating Angular Momentum for a Rolling Sphere

    Thanks, that makes it clear, i thought i was simplifying it too much, so its good to know that I don't have to do the less simplified way with all the rigorous work.
  5. L

    Calculating Angular Momentum for a Rolling Sphere

    The problem statement Icm=\frac{2}{5}mr2 \omega=v/r m=mass of object There's some things I don't really get about total angular momentum in a rigid body. Suppose a perfectly spherical object is rolling in uniform circular motion (ie. in a loop). Find the total angular momentum. Homework...
Back
Top