Recent content by togahockey15

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Homework Statement Unpolarized light of intensity I0 passes through two pieces of Polaroid sheet. The second piece is rotated so that the intensity of the transmitted light goes to zero. A third piece of Polaroid is inserted between the two pieces. Calculate the intensity as a function of...

Homework Statement At what angle above the horizon is the Sun when light reflecting off a smooth lake is polarized most strongly? Homework Equations dsin(θ) = mλ I = E^2 The Attempt at a Solution I think that the polarization is strongest when the angle between the light...

did you ever find a solution to this?

Homework Statement When a wire carries an AC current with a known frequency you can use a Rogowski coil to determine the amplitude Imax of the current without disconnecting the wire to shunt the current in a meter. The Rogowski coil, shown in the figure, simply clips around the wire. It...

Homework Statement When a wire carries an AC current with a known frequency you can use a Rogowski coil to determine the amplitude Imax of the current without disconnecting the wire to shunt the current in a meter. The Rogowski coil, shown in the figure, simply clips around the wire. It consists...

Homework Statement When a wire carries an AC current with a known frequency you can use a Rogowski coil to determine the amplitude Imax of the current without disconnecting the wire to shunt the current in a meter. The Rogowski coil, shown in the figure, simply clips around the wire. It...

So would the design simply be how long the wire is and what its cross-sectional area should be?

Hey Warren, This is probably a dumb question, but what exactly do they mean by transmission line, then? -Nick

Homework Statement Design a dc transmission line that can transmit 225 MW of electricity 185 km with only a 2.0% loss. The wires are to be made of aluminum and the voltage is 660 kV. 2. Homework Equations P= IV = I^2 * R R= p(L/A) Power loss = Pf - Pi Attempt at a solution I worked through...

Homework Statement When a wire carries an AC current with a known frequency you can use a Rogowski coil to determine the amplitude Imax of the current without disconnecting the wire to shunt the current in a meter. The Rogowski coil, shown in the figure, simply clips around the wire. It...

Homework Statement Suppose you wrap wire onto the core from a roll Nof cellophane tape to make a coil. Describe how you can use a bar magnet to produce an induced voltage in the coil. What is the order of magnitude of the emf you generate? State the quantities you take as data and their...