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A reversible-adiabatic (ideal) CO2 diffuser operates between 200 kPa and 300 kPa. The inlet temperature and velocity are 300 K and 250 m/s respectively. Determine the exit temperature and enthalpy.
A 2500 lb car moving with a velocity of 3 mi/h hits a garage wall and is brought to rest in 0.05 s . Determine the average impulsive force exerted by the wall on the car bumper.
An adiabatic air compressor receives ambient air at 300K and 100 kPa, and compresses it to 1000 kPa. Determine the actual exit air temperature.
Steam at 10,000 kg/h passes through an adiabatic turbine from an initial state of 100 bars, 500 degrees C to a final state of 15 bars and 250 degrees C. Determine the isentropic efficiency.
The mass of the sprinkler and cart is M = 350 kg. Calculate the magnitude of the moment that tends to overturn the cart.
The breaking strength X [kg] of a certain type of plastic block is normally distributed with a mean of 1500 kg and a standard deviation of 50 kg.
Determine the max bending stress, deflection of the board, and the safety factor. Also, how much would the diver need to weigh to cause failure of the board?
Estimate the largest possible force (in N) that can be applied before the bar breaks. Assume the maximum flexural strength reported for this material.
The input to a 12-bit AD converter is Vin = Asin(2 omega t) + 2Acos(2 omega t) and its f = 20 kHz. Find the sampling time interval and aperture time for this A/D conversion.
What is the minimum pump power required to increase from the pressure of saturated water at 2 kPa to pressure of water at 2 MPa with a mass flow rate of 10 kg/min?
If a case of light bulbs contains 1200 bulbs, and the probability that any one bulb is defective is 0.015, estimate the probability of each of the following using the normal distribution technique.
If the weight of a loaded truck is described by a normal distribution with a mean of 13.2 tons and a standard deviation of 2.7, what is the probability that a truck chosen at random weights 17 tons
Calculate the entropy change of each reservoir and the net entropy change of the two reservoirs after 20 min of operation.
A constant pressure process results in a work output of 10 kJ. Find the change of entropy of the Nitrogen using the method of standard entropy (variable specific heats).
Determine assuming the ideal gas model the pressure at the final state, in bar. the work and heat transfer, each in kJ. the entropy change, in kJ/K.
The area at the nozzle inlet is 0.1m^2.At the nozzle exit the area is 0,02m^2. Determine the gage pressure at the nozzle inlet to produce an otlet speed of 50m/s?
Based on work from your friend, you assume that the fractional conversion of A is 0.50. Calculate the outlet molar flow rate of A. Calculate the reaction rate, R_1 for the reaction
However, he does not record the direction of the flow. Show that you can deduce the direction of the flow based only on these measurements. Explain your solution.
Apply risk management techniques (all steps) learned in the class to analyze the failure and what could have been done to prevent it?
At what angle θ must the pipe be inclined downward from the horizontal for the pressure in the enitre pipe to be atmospheric pressure and the flow rate to be maintained the same?
Air enters a compressor operating at steady state at 17oC, 1 bar and exits at a pressure of 5 bars. If there are no internal irreversibilities, evaluate the work and heat transfer, each in kJ/kg of
What is velocity of plate B right after impact? Set up a proper equation that relates states of plate B + spring (A) right after impact and (B) maximum compression.
Refrigerant 134-a enters a condenser of a residential heat pump at 800 kPa and 35oC at a rate of 0.018 kg/s amd leaves at 800 kPa as a saturated liquid.
What is the output power Pout of motor at the instance that crate reach B? Pout can be also evaluated by Pout = F.V . What are F and V in this case? Also find their magnitude.