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Assume that the pressure p and the specific volume v of the atmosphere are related according to the equation pv1.4 = × 2.3 105 where p is in N/m2 abs and v is in m3/kg. The acceleration due to gravity is constant at 9.81 m/s2. What is the depth of atmosphere necessary to produce a pressure of l.0132 bar at the earth’s surface? Consider the atmosphere as a fluid column.

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Nuclear Physics


A vacuum gauge mounted on a condenser reads 0.66 mmHg. What is the absolute pressure in the condenser in kPa when the atmospheric pressure is 101.3 kPa?

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Nuclear Physics


The resistance of the windings in a certain motor is found to be 80 ohms at room temperature (25°C). When operating at full load under steady state conditions, the motor is switched off and the resistance of the windings, immediately measured again, is found to be 93 ohms. The windings are made of copper whose resistance at temperature t°C is given by R = R [1 + 0.00393 t] Where R0 is the resistance at 0°C find the temperature attained by the coil during full load.

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Nuclear Physics


The temperature t on a thermometric scale is defined in terms of a property K by the relation t = a ln K + b

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Nuclear Physics


A system of volume V contains a mass m of gas at pressure p and temperature T. The macroscopic properties of the system obey the following relationship: (P+a/V^2 ) (V - b) = mRT

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Nuclear Physics


An engine is tested by means of a water brake at 1000 rpm. The measured torque of the engine is 10000 mN and the water consumption of the brake is 0.5 m3/s, its inlet temperature being 20°C. Calculate the water temperature at exit, assuming that the whole of the engine power is ultimately transformed into heat which is absorbed by the cooling water.

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Nuclear Physics


During the process 1.7 kJ of heat are transferred from the liquid to the surroundings, while the temperature of the liquid is rising to 15°C. Find Δ E and W for the process.

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Nuclear Physics


The properties of a certain fluid are related as follows: u = 196 0.718t pv = 0.287 (t +273) Where u is the specific internal energy (kJ/kg), t is in °C, p is pressure (kN/m2), and v is specific volume (m3/kg). For this fluid, find cv and cp.

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Nuclear Physics