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1.an iron cube at 400 degrees Celsius is dropped into a insulated bath containing 10kg of water @ 25 degrees Celsius. the water finally reaches a temperature of 50 degrees Celsius at steady state. given that the specific heat of water is equal to 4186j/kg k find the specific heat capacity of iron
2.Carnot engine working between a source temperature of T2 and sink temperature of T1 has efficiency of 25%. if the sink temperature is reduced by 20 degrees Celsius the efficiency is increased to 30%. find the source and sink temperature
3.A machine has an initial cost of $10,000. Its market value declines by 20% annually. The repair costs are covered by a warranty in year 1, and then they increase $600 per year. The firm's MARR is 15%. Find the minimum EUAC for this machine and its economic life (in years).
The truss shown consists of 9 members and is supported by a ball and socket at A, two short links at B, and one short link at G. Check that this truss is a simple truss, that it is completely constrained
If log KSO, calcite (CaCO3(s)) = -8.61 at 50 oC, would calcite be over- or under- saturated in a hot water heater at 50 oC if the water was in equilibrium with calcite at 25 oC (log KSO = -8.30) when it entered the house
The soil's angle of repose is 35° and its swell is 25%. Find the height and the width of the triangular soil bank that will result from the trench excavation
The uniform load has a mass of 450 and is lifted using a uniform 35- strongback beam and four ropes. Determine the Tension in the ropes Determine the force that must be applied at A.
How does the engineering classification of soils differ from he engineering classification of rocks
salary 65000 per year, jane plans to retire in 25 years. Annual anticipated increaase is 3000 a year. she plans to deposite 5% of her yearly salery, into retirment fund that earns 7% intrest compounded daily.
Write a program that uses menu to select a type of figure (triangle, sqaure, pentagon, hexagon, heptagon, octagon), and then use switch-case to determine the value of n.
Provide a reasonable design for a 99% efficient ESP treating 7500 m^3/min of gas. The particles have an effective drift velocity of 10.0 cm/s.
A 200-kg mass is hanging from a hook conncted to a pulley. The chord around the pulley is connected ot the overhead support at two points. What is the tension in each cord connected to the support if the angle of the chord from vertical is 0º
Determine the force required to drag a small barge (10 ft by 30 ft) in a shallow canal (3 inches deep) in order to maintain a velocity of 5 ft/sec. Assume that the fluid is behaving in a Newtonian fashion and the water temperature is 68 degree fah..
A spherical drop of water has r = .1mm . If the surface tension of water is 72 dynes/cm, calculate the pressure difference across the interface.
Determine the coefficient of thermal expansion (in m/m.K) for the material over the temperature ranges - Determine i. the phases present
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