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A long rod of 60-mm diameter and thermo physical properties P = 8000 kg/m3, c = 500 J/kg · K, and k = 50 W/m · K is initially at a uniform temperature and is heated in a forced convection furnace maintained at 750 K. The convection coefficient is estimated to be 1000 W/m2 · K.
(a) What is the centerline temperature of the rod when the surface temperature is 550 K?
(b) In a heat -treating process, the centerline temperature of the rod must be increased from Tj = 300 K to T = 500 K. Compute and plot the centerline temperature histories for h = 100, 500 and 1000 W/m2 · K. In each case the calculation may be terminated when T = 500 K.
d^2y/dt^2 - 6dy/dt +36y(t)=25 dx/dt find the zero input response of the system given y(0)=1 and dy/dt when t=0 = -3 find the Laplace system function, H(s) for the system described by equation Equqtion.
Find the unit impulse responses of two systems specified by these equations and comment on their similarities and differences: 1) (D2 + 4D + 3) y (t) = (D + 5) x (t) 2) (D2 + 5D + 6) y (t) = (D2 + 7D + 11)x (t) .
Assume that the channels between the transmit antenna and the receive antennas are statistically independent Rayleigh fading channels and the MRC combination is used at the receiver. Given that the system BER is 10^-2 when the mean SNR is 3dB.
a)apply gauss's law to find the total flux leaving the closed surface of the cube. b)evaluate - *D at v the center of the cube. c)estimate the total charge enclosed within the cube.
Explain in one or two sentences the key reason why a CMOS Domino circuit is safer than an ordinary dynamic circuit when cascading several inseries
Design a 2's complementer with a shift register and a flip-flop. The binary # is shifted out from one side and it's 2's complement shifted into the other side of the shift register.
Write a three function program. The main function must create a string array with room for 10 elements. The main function should call the second function passing it the array as the first argument and the size of the array as the second argument.
an astronaut drops an object from rest relative to the planet on a planet alpha having the same radius as of earth
The design of the amplifier shall be performed for the Fairchild Q2N3904 NPN Transistor. Specifications can be obtained from the datasheet for the Fairchild Q2N3904 and are typically given in a variety of ways. Minimum and maximum operating condit..
It costs $30,000 to retrofit the gasoline pumps at a certain filling station so the pumps can dispense E85 fuel. if the station makes a profit of $0.08 per gallon from selling E85 and sells an average of 20,000 gallons of E85 per month
Determine the probability that the receiver correctly receives the codeword for the first time on the k-th transmission. Also determine the average number of transmissions until the receiver correctly receives the codeword.
A Y-connected load with an impedance of 12 - j15 per phase is connected to a balanced Delta-connected 208-V, 60-Hz, three-phase, positive phase-sequence supply. Determine (a) the line and phase voltages
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