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A gas station uses a 0.05 m^3 tank to store air at 800 kPa (absolute) and 15C. The tank is equipped with a valve through which air is released. The flow area through the valve is 65 mm^2. The air passing through the valve has a speed of 300 m/s and a density of 6 kg/m3. Calculate the rate of change of density ( d(rho)/dt ) in the tank the moment the valve is opened. Assume uniform properties in the tank at any instant.
an empty parallel plate capacitor is connected between the terminals of a 3.1-v battery and charged up. the capacitor
Derive an expression for the bounding energy Eo in terms of the equilibrium interionic separation ro and the constants D, and p using the following procedure
a rankine cycle is to drive an electric generator to produce 600 mw of electricity. the generator is 95 efficient.the
a pan of negligible mass is attached to two identical springs of stiffness k 250 nm. if a 10-kg box is dropped from a
sae 30 oil at 100oc flows through a 12-mm-diameter stainless-steel tube. what is the specific gravity and specific
a fixed amount of water vapor initially at 20mpa 520c is cooled at constant volume until its temperature reaches
a spherical tank aisi 302 stainless steel has an outside diameter of 40cm and a wall thickness of 2cm. it contains
A 0,5Kg mass attached linear spring suffress 01 N/m. Determine be naturak frequency of the system in hortz e reapert this calculation for a mass of 50Kg and a suffress of 10N/m and compare your result to that of part.
If the deflection of the gae fluid height, h, is 2 inches find the 1) velocity of the jet air and 2) the force exerted on the disk by the air.
a large stationary brayton cycle gas-turbine power plant delivers a power output of 100000 hp to an electric generator.
determine an expression for steady temperature distribution in a long hollow cylinder with specified surface
the total pressure of air entering a single-stage centrifugal compressor is 1.013 bar and the total t is 288 k. the
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