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two blocks are joined by an inextensible cable. If the system is released from rest, determine the velocity of block A after it has moved 2m. Assume that the coefficient of kinetic friction between block A and the plane is 0.25 and that the pulley is weightless frictionless?
a certain shunt motor armature has a resistance of 0.07 and a current of 50 amperes at 120 volts. determine the counter emf
What is the total power density and total available current density between wavelength of 280 and 1240 nm for the AM0 and AM1.5 spectra. Assume each photon generates on electron-hole pair. You will need AM1.5 and AM1.0 spectra.
The continuous-time sinusoid x(t) = cos(300?t) is sampled every Ts = 2.0 ms, so that x[n] = x(0.002n) For what other values of f in the range 0 Hz to 2.0 KHz does the sinusoid v(t)
consider a 5 bit binary sequence. A one or zero is equally likely for each bit. Also each bit is statistically independent of the others. Let X be a random variable denoting the number of one in the sequence. Find the density and distribution of X
Waves and Strings: compute the tension in the top string (i.e. E string, lowest note) of a properly tuned guitar. You will likely need to spend a couple minutes on the internet to obtain length and any other important properties of the string.
Determine the corner frequencies and the limiting horizontal asymptotes of a common-emitter circuit with an emitter by pass capacitor. Consider the circuit with the parameters Re=4kΩ,Rc=2kΩ,Rs=0.5kΩ,Ce=1μF,v+=5v,V- =-5v.
Consider an ideal op-amp in inverting amplifier configuration with feedback impedance Rf=6ohms and an input impedance consisting of a series RL: Ri=6ohms and Li=5H. Let h(t) be the impulse response of the overall amplifer.
1) Find the transient and steady-state responses of the system using frequency domain methods. 2) Find the forced and natural responses of the system using frequency domain methods. 3)Find the 0+ conditions for the system's step response and impulse ..
A six pole, 40 kW, 400 V d.c. motor draws 110 A from the supply. The shunt field resistance is 200 Ohm and the armature resistance is 0.5 Ohm. The armature is wave wound with 600 conductors operates at a speed of 1200 rev/min when supplying full l..
an unknown sensor is investigated by connecting resistors across the output and measuring the current through them. When a resistance of 30 is connected the current through it is 0.5A. When the resistance is replaced by 20
A water sprinkler sprays water over a distance of 30 feet while rotating through an angle of 145 degree . What area of lawn recieves water
A negative feedback amplifier has a close-loop gain Af=100 and an open-loop gain A=105. What is the feedback factor If a manufacturing error results in a reduction of A to 103, what close-loop gain results
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