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Assume that a single high-voltage 60 Hz power line carries a current of 500 Amperes and has its center located 12 meters above the ground.
(a) Model the line as an infinite filament of current under dc conditions. Calculate the magnetic field intensity in amperes/meter at the top of the head of a man who is 2 meters tall. Assume the man is standing on the ground directly underneath the line. Include a figure to express the geometry used to obtain your answer.
(b) What is the magnetic flux density in units of Tesla, corresponding to the intensity in part (a)?
(c) Calculate the wavelength in miles of a 60 Hz signal in free space.
(d) Is the dc assumption used in part (a) reasonable? Explain.
Determine the transmission coefficient for the system for X=a where a is on the order of nanometers. Determine the transmission coefficient for the system for X=a where a is on the order of meters
The equipment works in reception mode, 24 hours a day and throughout the year. About 120 daily Call Ringtone, a median time of 3 min duration each, except Saturdays and Sundays, which are carried out almost no calls are carried out.
When the beam is not broken, light from the transmitter hits the receiver and turns on the output transistor from the receiver. Their purpose is to detect objects as the objects break the beam. design a through-beam photoelectric sensor
Industry standards suggest that 10% of new vehicles require warranty service within the 1st year. Jackson Chevy in Detroit, MI, sold 12 cars yesterday. a. What is the probability that none of these cars requires warranty service
Design a 3-tap FIR lowpass filter with a cutoff frequency of 1,500 Hz and a sampling rate of 8,000 Hz using a. rectangular window function b. Hamming window function.
When the two windings are connected to a a.c supply of 50hz, the field current is 0.1A, the armature current is 100A and the phase difference between them is 60 degree. calculate the average torque and maximum torque.
What are the two possible frequencies to which the local oscillator could be set? What bandwidth should the 10.7 MHz IF amplifier have?
A sample has a T1 of 0.8 seconds. The net magnetization from the sample set equal to zero and then allowed to recover towards its equilibrium value. After 1.0 seconds, what fraction of the equilibrium magnetization value will be present
An LC circuit consists of a capacitor, C = 3.16 ?F, and an inductor, L = 5.80 mH. The capacitor is fully charged using a battery and then connected to the inductor. An oscilloscope is used to measure the frequency of the oscillations in the circui..
The first stage is a transconductance amplifier with an input resistance of 2k ohms, an output resistance of 100k and a gm=0.002A/V. The second stage is a voltage amplifier with an input resistance of 5k, an output resistance of 18 ohms and a volt..
The magnitude of the acceleration of the block is 1.93 m/s^2 (a) Find the coefficient of kinetic friction between block and plane? I got 0.393 but it is wrong. (b) Find the speed of the block after it has slid 1.90 m
If one page of memory can store 25 lines of characters with each line con- taining 80 characters, how many pages of information are there in 3 GBs of memory
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