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2.Chickens with an average mass of 1.5 kg (k = 0.45W/m·K and 0.13 X10-6 m2/s) initially at a uniform temperature of 20°C are to be chilled in agitated brine at -7°C. The average heat transfer coefficient between the chicken and the brine is determined experimentally to be 440 W/m2·K. Taking the average density of the chicken to be 0.95 g/cm3 and treating the chicken as a spherical lump, determine thecenter and the surface temperatures of the chicken in 2 h and 30 min. Also, determine if any part of the chicken will freeze during this process.
The current is the flow of electrons through conductor ,and voltage is the force that exerted on electrons to flow through the conductor, then why in many electric circuit the voltage is very high while current is less or vice-versa.
Calculate the energy required to change the arrival time of a near earth object of mass 10,000 MT by a distance equal to the diameter of Earth using laser ablation. Assume an ejection velocity of the material at 10,000 m/sec.
A 360 nm thick film floats on the surface of the water. The indices of refraction of the oil and the water are 1.50 and 1.33, respectively. The surface of the oil is illuminated from above at normal incidence with monochromatic light.
Find the dimension of the window, as measured at the top of the oxide, after ideal isotropic etching (i.e. no overetch). Draw a cross section of the window opening with the resist still on.
The Karina Light Company manufactures inexpensive light-emitting diode (LED) bulbs whose estimated lifetime in normal distribution with a mean of 9000 hours and a standard deviation of 500 hours. Calculate the probability that the LED will fail wit..
One side of the transformer bank is connected to a 120-kV transmission line, and the other side is connected to a three-phase load of 10 MVA at 13.2kV and 0.8 lagging power factor. Using the base in the tranmission line of 120-kV and 20 MVA.
An LTI system's impulse response is described by the differential equation, dh(t)/dt + 3h(t) = impulse function. Find the characteristic roots for the system, the initial condition, and the h(t) for t > 0.
A Complete Guide about Solar Panel Installation with Step by Step Procedure and with Calculation and Images
Given the DSP system, where the sampling rate of 4000 Hz is used, the anti-aliasing filter is the Butterworth filter with a cut-off frequency of 200 Hz, and the percentage of aliasing level at the cut- off frequency is required to be less than 10%
A carrier signal c(t) = 10 cos(2pifct) is modulated using a message signal m(t) cos(20pit). The modulation is FM, with kf = 50.Write equation for modulated signal What is average transmitted power & modulation index
A 5-element uniform linear array with inter-element spacing of λ/2 is to have maximum radiation in the direction θ=60° , find the current phases , find the directions of null radiation , hence sketch the radiation pattern
c) Write the SOP boolean equations as obtained directly from the partial truth table above and sketch a logic circuit diagram for them. d) Reduce the above equations step-by-step into the simplest form that would use only NAND gates.
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