Recent content by LippyKa16

  1. LippyKa16

    Engineering A car on a hill - power of motor problem

    Thank you for your help, I think I have solved it now.
  2. LippyKa16

    Engineering A car on a hill - power of motor problem

    Would that Force be the force of the car and the velocity in v * sinθ is the unknown that I am trying to solve for? And would the equation for the gravitational potential energy be m*g*v*sinθ? I struggle with this stuff...
  3. LippyKa16

    Engineering A car on a hill - power of motor problem

    Ok, thank you for your help so far.
  4. LippyKa16

    Engineering A car on a hill - power of motor problem

    Would that represent the v aspect of Power with regards to F*v for GPE?
  5. LippyKa16

    Engineering A car on a hill - power of motor problem

    So you would gain height at a speed of v*sinΘ? That would be the y component of velocity?
  6. LippyKa16

    Engineering A car on a hill - power of motor problem

    You would be gaining height at v m/s right?
  7. LippyKa16

    Engineering A car on a hill - power of motor problem

    So basically the s should be velocity?
  8. LippyKa16

    Engineering A car on a hill - power of motor problem

    Sorry, yes I did mean the weight of the car was at an angle. I was planning on adding the cosΘ term to all of the forces but that was unnecessary. Yes sorry, I meant dKE/dt = 0 because maximum velocity is a constant. The term d/dt (1/2*m*(1/2(u+v)t * sinΘ)) that I had was trying to...
  9. LippyKa16

    Engineering A car on a hill - power of motor problem

    Homework Statement A car is traveling up a slope. Given that a(t) is constant at 1m/s^2, find the expression of motor power in time. Assuming that the maximum power of the car is 215kW, for how long can the car maintain such an acceleration? Mass of car (m) = 2000 kg The hill has a constant...
  10. LippyKa16

    Calculating Minimum Thickness of a Thin Film Using Interference Patterns

    I wasn't too sure. Would that mean I would have to calculate the relevant wavelength through the film? Would that mean: λfilm = λ / n(benzene) (λ = 565 and n(benzene) = 1.5) λfilm = 3.77*10^-7 *EDIT* I realize the mistake I made, and I did need to calculate λfilm. The answer I got was...
  11. LippyKa16

    Calculating Minimum Thickness of a Thin Film Using Interference Patterns

    Homework Statement A researcher measures the thickness of a layer of benzene (n = 1.50) floating on water by shining monochromatic light onto the film and varying the wavelength of the light. She finds that light of wavelength 565nm is reflected most strongly from the film. What does she...
  12. LippyKa16

    What is PhysicsForums and How Can It Help Me as a Scientist?

    Hi, I've just joined PhysicsForums and I am just trying this out. Thanks for reading.
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