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1. A horizontal rod 5 mm in diameter is immersed in water maintained at 18°C. If the rod surface temperature is 56°C, estimate the free convection heat transfer rate per unit length of the rod.
2. A horizontal uninsulated steam pipe passes through a large room whose walls and ambient air are at 300 K. The pipe of 150-mm diameter has an emissivity of 0.85 and an outer surface temperature of 400 K. Calculate the heat loss per unit length from the pipe.
Low pressure steam at 120 °C is available as a heat source. The evaporator is run under a slight vacuum, such that the temperature of the boiling apple juice concentrate is maintained at 100 °C.
A coaxial cable is used to transmit data with a bandwidth of 100 MHz. Calculate the maximum peak Johnson noise power for 300 K and 80 K.
Consider the same silicon-aluminum metal-semiconductor junction. The cross-sectional area of the junction 1s 10 µm2. Assume that Be is 30 A K -2 cm-2 and the ideahty factor n is 1. Calculate the reverse saturation current and plot..
The final temperature of the uranium and deuterium oxide mixture is 28.5C. Given the densities of uranium (19.05 g/cm3) and deuterium oxide (1.11 g/mL), what is the edge length of the cube of uranium?
1 mol of liquid hexane at 10 bar, 25 °C, is mixed adiabatically and under constant pressure with hexane vapor at 180 °C. Determine the moles of the vapor that must be mixed with the liquid in order to produce a final state that consists of a vapor..
Solid NH4NO3 (ammonium nitrate) decomposes on heating to 400°C, forming N2O gas and water vapor, H2O. (a)Write a balanced chemical equation
r crystal/minute =200d-10d d in mm What are the units of the constants 200and 10 assume the given equation is valid and Therefore Dimensionally homhgeneous
A closed insulated cylinder is divided into parts by a piston that is held into place by latches. One compartment is evacuated, the other contains steam at 7.5 bar, 300 °C. The latches are removed and the gas expands to fill the entire volume of t..
A stream of water at 358.15 K (85"C), flowing at the rate of 5 kg s-1 is formed by mixing water at 297.15 K (24°C) with saturated steam at 400 kPa. Assuming adiabatic operation, at what rates are the steam and water fed to the mixer?
__________ is the response curve for a step input signal from a reactor. 1. S-curve 2. C-curve
Then the monkey on the right begins to climb the rope while the monkey on the left simply holds on. When the right monkey has raised himself through height h(relative to the floor), what has been the change in the position of the left monkey?
Devise a control system for the distillation column described in Chapter 17, Example 17.2. The flow to the column comes from a storage tank. The product, acetone, is sent to storage and the waste to an effluent pond. It is essential that the speci..
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