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Five kg of nitrogen (N2) undergoes a process from p1 = 5 bar, T1 = 400K to p2 = 2 bar and T2 = 500K. Assuming ideal gas behavior, determine the change in entropy, in kJ/K with
A) Constant specific heat evaluated at 450K
B) Variable specific heats
the 3000 lb car and the 4600 lb tow truck are stationary. the muddy surface on which the car rest exerts a negligible friction force on the car. what is the tension in the tow cable.
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consider a small simple rankine power cycle which produces 600kw power from an electric generator with an efficiency of
a satellite is in earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km.a. what is
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The crate shown is held against wedge B by a spring. The spring is 94.5% of its original uncompressed length l=2.75m, and the spring constant is given as k=1650N/m. The coefficient of static friction at all contacting surfaces is ?s=0.130. The mass o..
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a hypothetical a-b alloy of composition 59 wt b-41 wt a at some temperature is found to consist of mass fractions of
Capacitors C1=12micro Farad and C2=28microFarad are each charged to 15V , then disconnected from the battery without changing the charge on the capacitor plates. The two capacitors are then connected in parallel, with the positive plate of C1 connect..
a power cycle operates between hot and cold reservoirs at 500k and 310k respectively. at steady state the cycle
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