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Heat in the amount of 150 kJ is transferred directly from a hot reservoir at TH= 550 K to two cooler reservoirs at T1 = 350 K and T2 = 250 K. The surroundings temperature is T, = 300 K. If the heat transferred to the reservoir at T1 is half that transferred to the reservior at T2, calculate:
(a) The entropy generation in kJ K-1.
(b) The lost work. How could the process be made reversible?
a 1 meter diameter cylindrical mass is connected to a 2 meter wide rectangular gate. the gate is to open when the water level drops below 2.5 meters. Determine the required value of the mass of the cylinder in kgs.
A company issues corporate bonds that have a coupon rate of 4%, pays dividends quarterly, and has a term of 10 years. Compute the dividend paid per quarter for each bond.
The fatigue threshold stress intensity factor range, ?K0, of the material is 3 MPa for load ratio R = 0 and 1.5 MPa for R = 0.85 and can be assumed to be independent of the cyclic frequency.
determine the required minimum diameter d of the post to the nearest 1/8 in. so that it will not yield when it is struck by the block.
compute the critical buckling load for a 2.5m timber column of full size square section 0.10m x 0.10m. The column has pinned ends(k=1). Assume the modulus of elasticity is 12Gpa and that the Euler formula applies
At what depth would the vertical effective stress in a deep deposit of clay be 100 kpa, if e=1.1 The ground water level is a 1 m delow ground surface and S=95% above the groundwater level. Neglect pore air pressure.
calculate the amplitude F0 of the sinusoidal excitation force that is necessary to produce a steady-state vibration with a velocity amplitude of 10 m/s at resonance. what is the corresponding amplitude of the acceleration
An equal-tangent crest vertical curve is designed with a PVI at station 110+00 and a PVC at station 107+43.3. if the high point is station 110+75.5 what is the design speed of he curve?
The atmospheric pressure at a location is usually specified at standard conditions, but it changes with the weather conditions. As the weather forecasters frequently state, the atmospheric pressure drops during stormy weather
An alloy is made up of 199.4 lbm copper, 204 lbm zinc, and 4.2 lbm lead. What is the composition, in atom percent, of the Cu-Zn-Pb alloy.
A 1000 ft long steel pipe carries water from a reservoir with a water elevation at 826 ft. The pipe has a diameter of 12 in. with a wall thickness of .5 in. A gate valve at the downstream end is slowly closed during a half-mintue period
Determine the liquid detention time, loading rate, F/M ration (with an MLSS of 2350 mg/l), sludge age (with 5330 lb/day waste sludge Eff. SS= 20 mg/l. Will the sludge settle properly
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