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The state liquid water is changed from 50 pisa and 50 F to 200 pisa and 100 F. Determine the change in the internal energy and enthalpy of water on the basis of the (a) compressed liquid tables, (b) incompressible substance approximation and property tables (c) specific heat model.
show how did you do the maintenance during your workshop machines were sent to your workshop from a big
air at 1 bar and 20 degrees c is compressed isentropically to 20 bar pressure. for both a and b assume that air is an
Determine the position of the neutral axis relative to the bottom face - dimensions of a 6 m long asymmetric I-beam are shown. Determine the position of the neutral axis relative to the bottom face
an undeformed specimen of some alloy has an average grain diameter of 0.04 mm. you are asked to reduce its average
a helicopter is ascending vertically with a speed of 5.78. at a height of 121 above the earth a package is dropped
A horizontal platform rests on four vertical springs, each of stiffness 15kN/m and mass 0.25kg. what will the frequency of oscillation of the table be if it has a mass of 2.okg
a free piston-cylinder system initially contains 8 kg of saturated liquid water at 275 kpa initial state. the water in
A 10 kW electric heater is used to heat 2 kg of air contained in an insulated rigid tank from 400 kPa and 50 °C to 200 °C. The ambient air temperature and pressure is 20 °C and 100 kPa, respectively.
a gas station uses a 0.05 m3 tank to store air at 800 kpa absolute and 15c. the tank is equipped with a valve through
a 10-kg mass of r-134a at 1.2 mpa and 70 c is cooled at constant pressure until it reaches a temperature of 20 c.
a heat pump has a coefficient of performance of 2 using a power input of 2 kw. its low temperature is to and the high
air within a piston-cylinder assembly initially at 12bar 327 degree celcius undergoes an isentropic expansion to
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