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Briefly explain how neurons operate and communicate and why they are referred to as the basic elements of behavior.
At what wavelength do the planetary bodies and Sun have their maximum emissive power? What range of the spectrum does this fall in?
Find the distribution of charge (both continuous and discrete) that will give this potential and interpret your result physically.
What is the acceleration of the particle? Calculate the x, y and z-component of a as a function of time.
A long straight wire carries a current of 69.6A. An electron, traveling at 8.61 x 10^7 m/s, is 5.14 cm from the wire.
It is possible to use crossed electric and magnetic fields to construct a velocity selector, a device that only passes charged particles.
Briefly explain the relationship between an electric generator and an electric motor. Be sure to outline their basic operation.
Determine the angular velocity and angular acceleration of the disk if beta is constant at 30 degrees.
A dipole p is placed at a distance x = a from the grounded conducting plane. The direction of p makes 30 degree with the plane.
If the two currents are doubled, is the point of zero magnetic field shifted toward wire 1, shifted toward wire2, or unchanged?
Three loops of wire are located near a long straight current-carrying wire. Indicate below the direction of the induced current in the specified loop.
A circular coil with radius R = 8.0 cm has 15 turns of wire. The magnetic induction field in the center of the loop is 6.0 X 10-4 T. Find current in the loop.
The horizontal component of the Earth's magnetic field at the location of the loop is 2.0 10-5 T.
Use the Biot-Savart law for currents to analyze the contributions of segments 1 and 5 to the magnetic field at point P.
Consider a flat circular current loop of radius R carrying current I. Chose the X axis to be along the axis of the loop, with the origin at the center.
The Earth's magnetic field is essentially that of a magnetic dipole. If the field near the North Pole is about 1.0x10^-4 T.
State the meaning of permeability, write down the expression for the permeability of free space, and indciate how it was developed from the Biot-Savart Law.
A constant current I flows in the loop. Use the Biot-Savart Law to calculate the H -field along the z-axis.
If this right angle bend lies at the origin and the wire carrying the incoming current lies on the negative y-axis.
A straight current-carrying (108 amps) wire makes an angle of 30 deg. with a .269T uniform magnetic field.
Imagine a small cylindrical permanent magnet floating above a superconducting tin disk bathed in liquid helium at around 1.2 K.
A coaxial cable consists of a wire of radius 'a' surrounded by a concentric conducting sleeve of inner radius 'b' and outer radius 'c'.
A thick slab extending from z=-a to z=+a carries a uniform volume current J=Jx (fig). Find the magnetic field, as a function of z, both inside and outside.
Two long, parallel conductors, separated by 10.0 cm, carry currents in the same direction. The first wire carries current I1 = 5.00 A and the second carries I2
Two parallel wires, each carrying a current of I = 1.8 A, are shown in the figure below, where d = 7.1 cm. The current in wire 1 is in the opposite direction.