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Consider an evacuated rigid bottle of volume V that is surrounded by the atmosphere at pressure P0 and temperature T0. A valve at the neck of the bottle is now opened and the atmospheric air is allo
knowing that th height of the rebound is .6m, determine A) the velocity of the plate immediatly after the impact, B) the energy lost due to the impact.
A valve in a cylinder has a cross sectional area of 11 cm2 with a pressure of 735 kPa inside the cylinder and 99 kPa outside. How large a force is needed to open the valve?
An insulated piston-cylinder device contains 3 Liter of saturated liquid water. The pressure is at 120kPa. Now, an electrical resistance heater inside the cylinder is turned ON, and an electrical wo
Find the mass of steam vented out from when the relief valve first opens to the point when the water level drops below the top of the core.
Determine the density and specific volume of carbon monoxide at a pressure 100 kPa and a temperature of 300 k. For CO, gas constant = 297.4 J/kg K.
Using data from the ideal gas tables, determine the heat transfer during the process, the work done and the change in entropy of the air.
The inlet and exit temperatures of a jet engine's nozzle have been measure to be 518K and 360K respectively. Using the cold air standard assumption, the exit velocity of the nozzle in meters/second
A gravimetric analysis of atmospheric air results in approximately 23.15% oxygen and 76.85% nitrogen. What is the partial pressure of oxygen in the air if the atmospheric pressure is 101kPa?
Feedwater in a steam power plant is to be heated in an ideal open feedwater heater that operates at a pressure of 0.5 MPa with steam extracted from the turbine.
Air enters a compressor at 300 K and 100 kPa at a volumetric flow rate of 4 m3/s. The air is compressed such that the outlet temperature is 620 K. Determine the change in specific enthalpy of the
Consider a combined gas-steam power plant. Water for the steam cycle is heated in a well-insulated heat exchanger by the exhaust gases of the gas turbine that enter at 800 K at a rate of 110 kg/s an
An adiabatic turbine operates by accepting superheated water (steam) at 8 MPa and 500°C at a mass flow rate of 2 kg/s. Determine the volumetric flow rate of the steam at the inlet and outlet (m3/s
A 100 KVA 3- phase star- connected transformer has a primary voltage of 11,000 V and a secondary voltage of 440 V, and it has 50 secondary turns. Find the number of primary turns and primary and sec
Air in a cylinder is compressed reversibly and isothermally from 95 kPa, 25 o C to 290 kPa. The initial volume is 0.162 m3. Determine the work input, the heat transfer, and the entropy change of the
Compute the equations of streamlines that pass through (x,y)= (0,0), (2,2), (-1,-1) and (0,2). Plot these streamlines over -3 < x < +3. Plot several selected velocity vectors to clearly sh
To a man walking with a speed of 2 m/s, the rain appears to fall vertically. If the velocity of rain is 4 m/s, calculate its direction with respect to the direction of man's velocity.
What is the magnitude of the impulse applied to the projectile by its weight from t = 0 s to 3 s? GIVEN: Mass of projectile= 20 kg initial velocity = 20 m/s @ θ=60 magnitude of velocity = 15.
Kinetic and potential energy effects are negligible. Determine a) the quality (x) of the entering H 2O and b) the rate of heat transfer (Q) between the heat exchanger and its surroundings, in kW.
Water is the working fluid in a cogeneration cycle that generates electricity and provides heat for campus buildings. Steam at 2MPa,320 degrees Celsius, expands through a two turbine configuration.
Determine the time rate of change of water temperature as it flows through the pipe using the material derivative of temperature.
Consider an acrylic sheet of thickness L = 5 mm that is used to coat a hot, isothermal metal substrate at Th = 300 degrees C. The properties of the acrylic are ρ = 1990 kg/m^3, c = 1470 J/(kg*K)
You have a cylindrical beverage container that has been sitting in your hot car all day, and is now at a temp of 50 deg C. It will now be placed into your refrigerator to cool down by natural convec
Water flowing from the oscillating slit produces a velocity field givin by V=u(o)sin[w(t-y/v(o))]i +v(o)j. Find the components of Acceleration ax,ay,az