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Cold water (c_p = 4.18 kJ/kg*C) leading to a shower enters a well-insulated, thin walled, double-pipe, counter-flow heat exchanger at 10 C at a rate of 0.95 kg/s and is heated to 70 C by hot water (c_p = 4.19 kJ/kg*C) that enters at 85 C at a rate of 1.6 kg/s. Determine the rate of entropy generation in the heat exchanger.
the low-temperature reservoir of a carnot heat engine is at 10 c. to increase the efficiency of this heat engine from
two forces f1 and f2 with magnitudes 40 and 55 newtons respectively act on an object at the origin. the angle f1 makes
two particles a and b are travelling around a circle of redius 2m in opposite directions. the velocity of particle a
The piston is then move in,and heat is rejected bt the air reversibly at constant pressure until the volume is the same as it was initially.Calculate the net heat flow and the overall change of entropy.sketch the process of p-V and T-s diagram.
If the cycle operates in steady flow with a power output of 20 kW, what is the steam flow rate?
a round casting is 0. 2 m in diameter and 1 m in length. another casting of the same metal is elliptical in cross
the triangular plate rotates about a fixed axis through point o with the angular properties indicated determine the
This problem came from the "kinematics of particles" part holding the "Determination of the motion of a particle" section, so use the formula relating to this section of this part.
lf the 50-kg crate starts from rest and achieves a velocity of v 4 ms when it travels a distance of 5 m to the right
the number of women-years of exposure is less than for established methods and all available evidence should be
steam at 320oc flows in a stainless steel pipe k 15wm. oc whose inner and out diameters are 5 cm and 5.5 cm
an industrial water shutoff valve is designed to operate with 30lbs of force and will encounter 200lbs of resistance
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