Physics Homework Solutions

Uniformly charged field

According to this book, the electric field outside a uniformly charged,infinite cylindrical conductor is the same as if the cylinder's charge were concentrated in a thin wire along the cylinder's axis. Moreover, the potential inside a uniformly charged infinite cylindrical pipe, like that inside a spherical shell, is a constant ...continues

Electric field between 2 parallel plates

Imagine to circular flat plates of radius R that are separated by a small distance s. Imagine that we connect the plates to a power supply that puts opposite charges on the plates of whatever magnitude Q is necessary to set up a fixed potential difference (delta*sigma) between them. A) argue that the magnitude of the total f ...continues

capacitance

What will happen in the capacitor circuit below? Include in your explanation what happens to the charge distribution on the capacitors as well as what happens to the brightness of the bulb. Remember that the capacitors are filled with insulator so charge cannot cross them.

Parallel Plates

According to section E3.4, the electric field E between two parallel plates with opposite, uniformly distributed charges is ( as long as the plates are very large compared to their seperation d) nearly uniform and has magnitude E= 4(pi)k(sigma), where sigma is the charge per unit area on the plates. Use this result to verify th ...continues

Physics

Imagine that we give N2(+), O2(+) and (NO)+ ions the same velocity of 30.0 km/s and then send them into a mass spectrometer where the magnetic field strength is B=8.5MN/C. How far would the spot on the photographic plate be from the entry point for each ion, assuming that each ion completes one-half of an orbit. The atomic mas ...continues

Biot Savart law

(a) Use the Biot-Savart law for currents to analyze the contributions of segments 1 and 5 to the magnetic field at point P. (b) Compare the contributions of segments 2 and 4 to the magnetic field at point P (both magnitude and direction). (c) The magnetic field at P is a sum of integrals, each one for a single segment of t ...continues

Symmetry and Flux

A wire loop is pulled through a region of magnetic fields shown below. B2 < B1. The loop has length L, height h, and resistance R. You pull with a constant force F such that the velocity of the loop is constant. Calculate the speed in terms of the known quantities B1, B2, L, h, R and F.

flux

A tile in the horizontal xy plane has an area of 2.0cm^2. Assume that the circulation direction for its boundary is counter clockwise when viwed from above. What is the flux of the magnetic field through this tile in the vicinity of this tile, the magnetic field is approximately B=300 MN/C in a direction 37 degrees up from t ...continues

Calculate flux

We learned that the magnitude of the electric field at a point a distance r from an infinite straight wire with a uniformly distributed positive charge E=2kλ/r, where λ is the charge per unit length on the wire. Imagine that we surround a portion of such a wire with a closed surface shaped like a cylindrical can. ...continues

Forces on current carrying wires in magnetic fields. Induced currents.

Please see attachment for picture of the problem: A wire loop is pulled through a region of magnetic fields shown below. B2 ...continues

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