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1. How does one obtain Eq. IX-5 or IX-6 from Eq. 9.3-8?
2. Recalculate the reduction in radiation loss for the model shown in Fig. IX.4. There are two view factors to be determined; use your intuition to obtain both of them. Assume that the rock slab stretches to infinity in both directions.
Assume that the coefficient of friction of the glass sliding on the tablecloth or sliding on the tabletop is 0.5. (For the trick to be effective the cloth should be pulled out so rapidly that the glass does not move appreciably
The 60-W fan of a central heating system is to circulate air through the ducts. The analysis of the flow shows that the fan needs to raise the pressure of air by 50 Pa. The fan is located in a horizontal flow section whose diameter is 30 cm at both t..
Using the ACI coefficients, design a continuous reinforced concrete beam that will span four supports. The end spans are 24-ft long; the center span is 28-ft long (spans are measured center to center of supports).
What sources of information have been used, where materials/information from this sources is quoted it must be clearly referenced using the Harvard Referencing System - calculated the electricity consumption of all household appliances in the home..
a rocket weighs 2600 lb including 2200 lb of fuel which is consumed at a rate of 25 lbs and ejected with a relative
A stream of humid air containing 1.00 mole % H2O(v) and the balance dry air is to be humidified to a water content of 10.0 mole % H2O. For this purpose, liquid water is fed through a flow meter and evaporated into the air stream.
a rigid vellel with the volume of 10 m3 contains a water-vapor mixture at 400 kpa at 60 percent quality. the pressure
The vertical clearance available for ductwork is 12 in. Identify a cost-effective rectangular duct section that meets these clearance and equivalent diameter requirements. Assume the duct is not lined.
What is the couple moment of the two couples that act on the pipe assembly. The distance from A to B is d = 400 mm.express the result as a cartesian vector.
The quarter-circular area is rotated through 360° about the y-axis. Determine thevolume of the resulting body, which is a portion of a sphere.
the simple steam power cycle in prob 4.23 in modified in the following way. steam entering the turbine is expanded to
a prototype disk brake for a bicycle was designed and consists of a pair of pads area 5 cm x 1 cm pressed against
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