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The right angle uniform slender bar AOB has mass m. Assuming a freely hinged pivot O, determine the magnitude of the normal force at A and the magnitude of the pin reaction at O.
Steam enters a turbine operating at a steady state at 8 MPa and 700 °C. Determine the rate of heat transfer from the turbine to the environment in kW.
One kilogram of water contained in a piston-cylinder assembly, initially at 160 °C, 150 kPa, undergoes an isothermal compression process to saturated liquid.
The membreane then ruptures and heat transfer takes place with the surrounding until the air comes to a uniform state at 50degC. Calculate the final pressure and the heat transferred in the process.
A frictionless piston-cylinder device with a set of stops contains .5m^3 of saturated H2O at 200 kPa. Calculate the sign and magnitude of the work done and the heat transferred in this process.
Determine the change in momentum in each vehicle. If the time of deceleration of vehicle 2 during the collision is 0.15 seconds determine the average force acting on the vehicle during this time.
The component sits stationary awaiting packaging. Determine the force exerted by the component, of mass 4g, downward on the conveyor as it sits at the buffer.
The conveyor section length is later modified and extended by a further 1.5m, Determine the new velocity of the components when they reach the buffer.
Would the required internal temperature be higher or lower if the same balloon were at higher elevation where p(infinity) was lower than used in (a)?
The membrane is removed and the system returns to equilibrium. Find the pressure at the final state and the internal energy change, if the temperature at the final state is 200 C.
At the turbine exhaust the steam velocity is 150 m/s, the pressure is 10 kPa, and the enthalpy is 2510 kJ/kg. How many megawatts of power are generated by the turbine?
Geothermal power plants harness underground sources of hot water or steam for the production of electricity. Determine the maximum possible thermal efficiency for any power cycle operating between the
Determine the changes in the enthalpy, specific volume, quality, and temperature for the following processes. The initial pressure p_i = 500kPa.
A steam radiator in a room at 25°C has saturated water vapor at 110 kPa flowing through it, when the inlet and exit valves are closed.
If the distance between the walls, zo, is equal to 4cm and the fluid is SAE 30 oil at 20°C. What is the value of umax in cm/s where umax is the velocity at the centerline?
Determine the initial velocity with which a soccer player must kick the ball, such that the ball bounces and then achieves maximum height of 2.20 m at pt.
If the specific surface energy is 0.4J/m2 and the modulus of elasticity for the material is 69GPA what is the maximum length of a surface flaw that is possible without fracture?
The water is stirred using an external motor until the substance is saturated vapor. Determine the work necessary to complete the process.
The substance is slowly heated at constant pressure until the temperature reaches 320C. Determine the work required to raise the weighted piston.
Sketch the following processes on P-V and P-T diagrams. Superheated vapor is cooled at constant pressure until liquid just begins to form.
If you have 3 force one of which the moment about point A ends up as 0, you add them to find the total moment. How do you find the distance away from point A of the application of the total force v
If the critical resolved shear stress is 18.2 MPa (3000 psi), will an applied stress of 40 MPa (6500 psi) cause the single crystal to yield? If not, what stress will be necessary?
Determine the time average R of the total aerodynamic and mechanical resistance to motion. neglect the loss of mass due to exhausted fuel compared with the mass of the sled.
Calculate the time average F of the total force tangent to the load exerted on the tires during the 8 s. Treat the car as a particle and neglect air resistance.