Estimate specific heat transfer from area in a t-s diagram
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You are an engineer in an electric-generation station. You know that flames in the boiler reach a temp of 1200 K and that cooling water at 300 K is available from a nearby river. What is the max efficiency your plant will achieve?
A block-spring system oscillates with an amplitude of 3.40 cm. The spring constant is 250 N/m and the mass of the block is 0.800 kg. (a) Determine the mechanical energy of the system.
The breaking strength X [kg] of a certain type of plastic block is normally distributed with a mean of 1500 kg and a standard deviation of 50 kg.
The thermal conductivity parallel to continuous reinforcing fibers in a composite with E-glass in a matrix of polyester is found to be 0.65 W/m.K. The thermal conductivity of E-glass is 0.97 W/m.K and that of the polyester is 0.17 W/m.K.
Find the specific work and heat transfer. Estimate the specific heat transfer from the area in a T-s diagram and compare it to the correct value.
Determine the work done in lifting a 250-lb refrigerator 4 ft vertically into a van. Alternatively, the refrigerator could be placed on a cart and rolled up a 10-ft-long ramp.
How much less time has this person's watch registered in 35 y than the watch of someone who has stayed at home? Is it true that commuters live significantly longer or does it just seem longer?
Sketch the cycle on p-v and T-s coordinates. For each process, associate work and heat transfer with the areas on these diagrams.
A well-insulated rigid tank of volume 10 m3 is connected by a valve to a supply line carrying air at 227oC and 10 bar. The tank is initially evacuated. Air is allowed to flow into the tank until the pressure is p.
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