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Problem :
Consider two spin systems A and A' placed in an external field H. System A consist of N weakly interacting localized particles of spin 1/2 and magntic moment u. Similarly, system A' consists of N' weakly interacting localized particles of spin 1/2 and magnetic moment u'. The two systems are initially isolated with respective total energies bNuH and b'N'u'H. They are then placed in thermal contact with each other. Suppose that |b|<<1 and |b'|<<1 so that the simple expressions of Problem 2.4c can be used for the densities of stats of the two systems.
In the most probable situation corresponding to the final thermal equilibrium, how is the energy Et of systemA related to the energy Et' of system A' ?
Compare the differences between MAC and H-MAC. Explain why using H-MAC is more secure than MAC? Be prepared to fully support your argument. Give examples of commonly used MACs and H-MACs.
The coils on the rotor, 10 turns per coil, are connected in series through the slip rings so that at any instance of time there are 5 coil sides under each pole. What is the dc voltage from a full wave rectifier if this rotates at 1000 rpm
Design a synchronous sequential circuit which generates the following sequence. (The sequence should repeat itself.)(a) Draw a state transition diagram for the circuit. (b) Write a Verilog program to implement the circuit.
1. The closed-loop transfer function of a system is T(s) = 11.1(s +18)/ ((s + 20)(s2 + 4s +10)) Plot the poles and zeros of this system and discuss the dominance of the complex poles. What overshoot for a step input do you expect
In a typical mobile communications base station (or cell site), a radio frequency (RF) signal is amplified in the base station and then sent (over cable) to the antennas at the top of the tower.
What are the two possible frequencies to which the local oscillator could be set? What bandwidth should the 10.7 MHz IF amplifier have?
Estimate the approximate final speed v2 of the golf ball
Assume a thermocouple generates a linear voltage from 20 mV to 50 mV when the temperature changes from 750 degrees F to 1250 degrees F. How much voltage will be generated when the temperature of the thermocouple is at 1000 degrees F
Control Systems- PID Controller, Which one of the following statements regarding the operation of a PID controller is definately false?
The first stage is a common-emitter amplifier and the second stage is a common-collector stage. You should use one npn (2N3904) and one pnp transistor (2N3906) to design the circuit to meet the design criteria. Use the transistor datasheets to fin..
How to Calculate the value of Ceramic / Non-Polarized Capacitors? and how to Find the value of Ceramic Capacitors?
The nameplate on a 25-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV:78-kV. A short-circuit test from the high-voltage side (low-voltage winding short circuited) gives readings of 4.53 kV, 321 A, and 77.5 kW.
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