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Calculate the density of air inside a house and outside a house using 20°C inside and -25°C outside. Use an atmospheric pressure of 85 kPa. Do you think there would be a movement of air from the inside to the outside (infiltration), even without a wind? Explain.
1 given nitrogen n2 gas within a piston-cylinder assembly undergoes a compression from p1 0.2 mpa v1 2.75 m3 to a
First stage is heating up the material. We will have cylindrical billet that is setting in a die and we heat it up. Heat coming in from anywhere else. How is the temperature changing? What are the energy going in and out and how they influence the..
A pressure cylinder (ends closed) having an internal radius of 6 inches and thickness 1 inch is subjected to an internal pressure of 5 ksi, a twisting torque of 50,000 in-lb, and a bending moment of 50,000 in-lb. Determine the principal stresses and ..
A 45 kg machine is mounted on a spring of stiffness 8x10^5 N/m. When the machine is set to vibration by a 32 Hz excitation, the machine's amplitude is measured as 1.5mm. What is the amplitude of the excitation provided to the machine? Ignore damping ..
the laminar flame speed of a premixed stoichiometric mixture of propane?air at 1 atm and 298 k is 0.4 ms. estimate the
Using a free-body diagram and the Newton method, determine the equations of motion of the double pendulum shown
a boy places his glass marbles in an oven at 200degreec. the diameter of the marbles is 15 mm. after a while he takes
Estimate the pressure drop across the honeycomb.
Determine the heat transferred from the entire plate length to air taking into consideration both laminar and turbulent portion of the boundary layer.
Steam steadily flows through a turbine to produce mechanical work. At the inlet, the pressure, temperature and velocity of the steam are 10 MPa, 450 °C and 110 m/s, respectively. The water exits this turbine at pressure of 10 kPa with the quality of ..
a subway car leaves station a it gains speed at the rate of 2 ms2 for 6 seconds and then at the rate of 3 ms2 until it
a rotating shaft has power transferred into a gear at b by a bevel gear resulting in a steady radial force f1100lb and
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