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A water kettle has 1 kg of saturated liquid water at P0 . It is on an electric stove that heats it from a hot surface at 500K. Water vapor excapes form the kettle, and when the last liquid drop disa
An ideal gas at 20 bar and 400 Celcius is being fed into an adiabatic turbine to generate electricity at a rate of 278 kmol/hr. The ideal gas will exit the turbine at 2 bar.
A heat pump is used to maintain a house at a constant temperature of 23°C. The house is losing heat to the outside air through the walls and the windows at a rate of 60,000 kJ/h while the energy
Steam at 140 lbf/in2, 1000°F enters an insulated turbine operating at steady state with a mass flow rate of 3.24 lb/s and exits at 2 lbf/in2. KE and PE effects are negligible.
Air at 80oC and a pressure of approximately 1350 kPa abs flows in a 20-mm-diameter tube. What is the minimum turbulent flow rate? Express the answer in liters per second and kg/second. At this flow
For an infiltration rate of 0.9 air changes per hour (ACH). A building 20m long, 13m wide, and 3m high is kept at 24 celsius and 55% relative humidity. The outdoor air temp is 38 celsius and 35% rel
Writing assignment in energy storage including flow battery,, writing assignment in energy storage including flow battery, flywheel, supercpacitor, Li-ion battery and etc?
Stagnation pressure ratio across flame holders (state 2 to 3) =.97. Nozzle exit area for choked (converging nozzle) and unchoked (de Laval nozzle)?
The vertical load on the hook is 1000 lb. Draw the appropriate free-body diagrams and determine the maximum average shear force on the pins at A, B, and C.
What is the energy balance equation for the compbined pump motor system? What is the relationship (equation) between the input power of the electric motor and the pressure rise of the water?
When drilling a hole in a table leg, a furniture maker uses a hand-operated drill with a bit of diameter d=4.0mm. If the resisting torque supplied by the table leg is equal to 0.3 Nm, what is the maxi
For an undamped SDOF spring mass system m=5Kg and k=2000 N/m. Plot the displacement and acceleration of the system using matlab if initial displacement is 0 and initial velocity is 0.6 m/s.
Compute the design factor of a rod that is under a tensile load of 3125 lb. The rod is rectangular, 1.5 in by 3.5 in and is made from SAE 1144 cold-drawn steel.
Consider water as the substance at 30 bar and 450C. Calculate specific volume (m3/kg) using ideal gas equation of state.
Consider condenser in a vapor power plant in which steam from the turbine is condensed to saturated liquid by rejecting heat to cooling water. Calculate the change in specific enthalpy (kJ/kg) of co
A student takes a multiple choice exam with 10 questions, each with 5 possible selections for the answer. Obtain the standard deviation of the number of questions that the student gets correct.
Use the gas data @ 300 K from the class equation sheet. Complete a property table for the AIR & HELIUM GAS. Determine the pressure and temperature when the gases finally reach equilibrium.
Past car sales experience has shown that 18% of all luxury cars sold are black. If 48 recent sales of luxury model cars are randomly selected, find the following probabilities: On average, how many
What are the percent errors associated with the approximation? What does the error and the percent error change to when the proper approximation for the enthalpy is u
The 0.5m long container shown in the figure accelerates downhill, so that the liquid surface is parallel to the road. Estimate how fast should the container accelerate in order to maintain the shown
A torque of 700 lb-ft is transmitted through the five bolts of a rim. The bolts are at a distance of 8cm from the center of the rim. Neglect friction.
Air, initially at 150 kpa, 500k and occupying a volume of .02m^3, undergoes two processes. Determine the total heat transfer for the two process, in kj.
What is the initial temperature and initial internal energy? What is the change in the volume of the system and the change in the internal energy of the system?
Using properties from the TEST software for water (H2O), determine (a) the initial temperature of the water; (b)the total mass of the water; (c) the final volume.
A container of diamer 6cm and height 10cm is filled with water 7cm high in the container. While the container is spinning at the rate calculated in (a), calculate the pressure at the bottom corner of