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1. How do you find the radiation fields due to an antenna of arbitrary length and arbitrary current distribution?
2. Discuss the evolution of the half-wave dipole from an open-circuited transmission line.
3. Justify the approximations involved in evaluating the integrals in the determination of the radiation fields due to the half-wave dipole.
4. What are the values of the radiation resistance and the directivity for a half-wave dipole?
5. What is an antenna array?
6. Justify the approximations involved in the determination of the resultant field of an array of two antennas.
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. A +12.9 uC charge moves from the origin to the point (x, y) = (20.0cm, 45.6 cm). What was the change in the potential energy of this charge? Through what potent..
What must be the radius of a circular loop of wire so the magnetic field at its center is 1.40 10-4 T when the loop carries a current of 17 A
Two charges are located on the x axis: q1 = +4.7C at x1 = +3.5 cm, and q2 = +6.6C at x2 = -3.3 cm. Find the magnitude of the net electric field at the origin
A nuclear power plant has a maximum steam temperature (T_H) of 310 MW. It produces 410 T_C of electric power in the winter, what's its summertime electric power output
The front and rear sprockets on abicycle have radii of 9.00 cm and 5.10 cm, respectively. Theangular speed of the front sprocket is 9.40 rad/s. Find the linear speed (in m/s) of the chain as it moves between the sprockets
Find out the mutual inductance per unit length between two long solenoids, one inside the other, whose radii are r_1 and r_2 and whose turns per unit length are n_1 and n_2.
Velocity of an object is zero at the same instant the acceleration is zero. If an object is not accelerating, there are no forcesacting on it. It is possible for a particle moving at constantspeed to have constant acceleration.
grinding wheel is initially at rest. A constant external torque of 47.2 N· m is applied to the wheel for 18.8 s, Find the moment of inertia of the wheel
A neutron at rest decays into a proton and an electron. How much Kinetic energy (in MeV) are shared by the electron and proton? Can a proton decay into a neutron and positron?
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 193m/s and a frequency of 240 Hz . The amplitude of the standing wave at antinodes is 0.440cm.
a wave on a string is described by dxt 2.00cm sin 12.57radmx - 638 radst where x is in meters and t is in seconds.
The centers of a 12kg lead ball and a 100g lead ball are separated by 6.0cm. What gravitational force does each exert on the other
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