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Electric field of point charges. Two point charges are located as in Figure 3.36.
(a) Sketch the electric field intensity of this arrangement using field lines.
(b) Find a point (on the axis) where the electric field intensity is zero.
i) Calculate the number of calls/hour/cell and the number of calls/hours/km2 ii) Calculate the number of users/hour/cell and the number of users/hours/channel iii) Find the modulation frequency for this system.
Cross-section of a coaxial cable:he radii of two concentric conductor is a and b respectively. In between, it is filled with an ideal dielectric with a permittivity e. Assume the charge in the inner conductor is Q Coulomb/meter.
A 3-phase, 480 V motor with a starting current of 235 A is located 1800 ft (550 m) from the electrical power source. What size copper conductors should be used to ensure that the voltage drop will not exceed6% during starting.
If 10 rock drills are in the stoping section that is located a total distance of 1500m from the shaft bottom determine the pressure and quantity requirements required of a compressor at surface to service the requirements of these rock drills.
Show that the sum of any two forward time-like vectors is itself forward time-like, and hence that the sum of any number of forward time-like vectors is its self forward time-like.
wo (2) 115 - V incandescent lamps A and B are connectedin series across a 230-V source. if lamp A is rated 75 watts andlamp B is rated 50 watts, determine the current drawn by the series connection.
A pull-up resistor must be used between the TTL output-CMOS input node and Vcc; the value of RP will depend on the number of CMOS gates connected to the node.
Suppose a signal from a vibrating motor is to be sampled discretelywith a digital data acquisition system to determine the RPM of the motor. It is known that the maximum possible RPM is 1800.
design a digital logic circuit to control the electrical power of the ignition system in a speed boat engine. the
Consider the following differential equation, where x(t) is the input and y(t) is the output: d/dt y(t)+5y(t)=2x(t) Suppose the input is x(t) = 4u(t) and the initial condition is y(0-) = 6 1. What is the impulse response for the system
You are the forensic accountant for the defendant in the case. What documents and other information will you seek to compute damages?
Consider a circuit that is connected to a phasor of 120V/0 degrees. The circuit feeds a 10 ohm resistor on the "hot" lead and then the circuit branches. One branch sees a 0.5A /60 degree phasor current source (oriented with "arrow oriented right)
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