Recent content by magnanimousto

  1. M

    Calculating Solar Rotation Using Sunspot Observations

    OK I get it. Thanks guys. I use the measurement of the x,y co-ordinates and then sin(inverse) to find angle. Then calculate difference in angle between the two spots per difference in time which would give me the angular velocity.
  2. M

    Calculating Solar Rotation Using Sunspot Observations

    sketch it out like this you mean? how would I find the quantative values from this?
  3. M

    Calculating Solar Rotation Using Sunspot Observations

    Homework Statement Calculating solar of the sun through observing sunspots. We are given a series of photos of the sun over a period of time where we can see sun spots. I am assuming the way to calculate would be to work out the longitudinal angles of the sun spots in the different photos and...
  4. M

    Conservation of Momentum and Energy

    OK. thanks very much for clearing this up
  5. M

    Conservation of Momentum and Energy

    oh it is right? I was told by a fellow student that my answers weren't right and I couldn't work out any other solution so asked here.
  6. M

    Conservation of Momentum and Energy

    oh sorry, for B) I get v= √(v0^2)/2. start with .5 mv0^2= .5 2mv^2 (masses and halves cancel out).actually the formula of K isn't given. I am assuming "energy conservation" refers to Kinetic energy
  7. M

    Conservation of Momentum and Energy

    Sorry didn't make myself clear. what I did was tried putting values on both sides, like this for p for instance. mv0= 2mv (here m cancel out). so the value of v in conservation of momentum according to this would be v0/2, essentially half of v0, which seemed pretty intuitive to me, but I've...
  8. M

    Conservation of Momentum and Energy

    Homework Statement This is the question show that when one of the steel balls, suspended by strings next to each other (as in a Newton's cradle), is pulled to the left and released, only a single ball recoils to the right under ideal elastic-collision conditions. Assume that each ball has a...
  9. M

    1-D (I think) Speed to distance problem

    Thanks jackarms & SammyS.I do know kinematics equations, for some reason it never occurred to me that since the force is the same in both so must be the acceleration
  10. M

    1-D (I think) Speed to distance problem

    Homework Statement A runner exerts a constant force to accelerate from rest to 2.0 m/s over a distance of 12 m. Assuming the runner can keep up the same force, what total distance would be needed to ac- celerate up from rest to 3.0 m/s? Homework Equations none given. The Attempt...