Recent content by jrenman

  1. J

    Evaluating Line Integrals Using Stokes' Theorem

    If I used the method of adding a straight line, would the line integral of the curve of the ellipse be the integral of the curl of the surface minus the integral of the straight line?
  2. J

    Evaluating Line Integrals Using Stokes' Theorem

    Homework Statement Evaluate the line integral I = (x2z + yzexy) dx + xzexy dy + exy dz where C is the arc of the ellipse r(t) = (cost,sint,2−sint) for 0 <= t <= PI. [Hint: Do not compute this integral directly. Find a suitable surface S such that C is a part of the boundary ∂S and use...
  3. J

    Mechanics: Motorcycle propulsion

    Homework Statement You must find the time it takes to accelerate (at constant applied torque) a motorcycle from 0 to 100 km/hr, given: Rider mass: 75 kg Bike total mass: 190 kg Torque at crankshaft of motor: 105 Nm Front and rear wheel masses (10 kg and 17 kg respectively) Radius of...
  4. J

    Solving for Divergence and F=∇×A

    Homework Statement A vector field F for which div F = 0, is called incompressible (also called solenoidal). Consider the vector field F(x, y, z) = ⟨y, x + y, −z⟩. (a) (1 point) Show that F is incompressible. (b) (3 points) Find a vector field A such that F=\nabla×A.Homework Equations div F =...
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