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A non-uniform steady incompressible flow is observed to have a velocity of 15m/s at a point where the cross-sectional area is 10 cm^2, what is the cross sectional area when the velocity is 11m/s.
The intention is to draw air from the receiver during the 4-hour drilling shift until the absolute pressure drops to 800 kPa. What is the rate at which the main air supply can be boosted during this
Determine if the small diameter can be further reduced in diameter by calculating the minimum size based on equivalent torque.
A 356 mm diameter main services a section of a mine and carries 4.8 kg/s of compressed air at peak periods. If the main is 2,000 m in length what would be the maximum pressure drop across it?
The uniform disk of mass pivots freely on the cart of mass. Determine the acceleration of the assembly and the angular acceleration of the disk under the action of the force applied to a cord wrapp
Provide an estimate of the relative magnitudes of the forced and free convection if P1 is increased by a factor of ten while all other parameters, including temperatures.
The superheated vapor enters at 20 bar with a velocity of 60 m/s and exits as a saturated vapor of 0.06 bar at velocity 130 m/s. Draw a T-v diagram and determine the inlet temp in degrees C.
A 50-Mg railroad car moving with a velocity of 3 km/h is to be coupled to a 30-Mg cae which is at rest determine the final velocity of the coupled cars.
Calculate the heat transfer coeffcient due to natural convection if the amplifer is mounted horizontally instead with the heated surface facing up.
Provide an estimate of the relative magnitudes of the forced and free convection if P1 is increased by a factor of ten while all other parameters, including temperatures, are kept the same.
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.