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1. Discuss the phenomenon of dispersion.
2. Discuss the concept of group velocity with the aid of an example.
3. What is a dispersion diagram? Explain how the phase and group velocities can be determined from a dispersion diagram.
How does the increase in the kinetic energy of a proton compare with the increase in kinetic energy of the alpha particle in part?
In use its arms are stretched to three times their original length before release. Assume the the modulus of rubber is 10-3 GPa and that it does not change when the rubber is stretched. How much energy is stored in the catapult just before release
What is the line voltage of the two loads? What is the voltage drop on the transmission lines? Find the real and reactive powers supplied to each load.
It is commonly found that if a capacitor is changed to some dcvoltage and then removed from the circuit and is totally dischargedwith a "short" placed across it when the short is removed thecapacitor will slowly begin to "aquire" a small voltage.
a.) Write signals as the real part of the sum if rotating phasors. b) sum of the counter-rotating phasors c.) Plot the single sided amplitude and phase spectra for this signal d.) plot the double-sided amplitude and phase spectra for this signal.
The space between the plates of a parallel-plate capacitor is filled with a dielectric whose permittivity varies linearly from f1 at one plate (located at y=0) to f2 at the other plate (located at y=d).
1. An operator prepares an 8-bit binary value with a dip switch. 2. A momentary contact switch (single-pole-single throw) connected to only one end of a cross-coupled NAND latch is activated. This sets the output of the latch to a logic one.
Use the simulation timing diagram to compare the worse case time to do an operation with your ALU with the worst case using the 74LS381. State which operation takes the longest and list the time required for both ALU's.
A tractor-trailer truck driver friend often delivers to companies that do not have a fork truck or loading dock. She wants to install a lift-gate on her trailer so she can load and unload her truck without a fork truck.
Suppose a random process is X(t) = A[cos(2fot + T)] where A and Fo are constants and T is a random variable that is uniformly distributed over [0, 2p]. 1. Is X(t) wide-sense stationary 2. Find power spectral density of x(t).
Shows a pneumatic circuit diagram used for air supply and exhaust in an automatic control system - State the sequence in which the cylinders operate on the operation of the start valve.
Watts in Cassette Players, A walker's cassette tape player uses 4 AA batteries in series to provide 6V to the player circuit. The four alkaline battery cells store a total of 200 watts-second of energy.
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