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A freight elevator has a total loaded weight of 4809 pounds and must be able to travel between levels at the rate of 4 feet per second (3 seconds between 12 foot floors).
Calculate the theoretical flame temperature for acetylene in 10% stoichiometric excess of a synthetic air mixture consisting 10 mole % O2 in 90 mole % helium.
How would this number change if the rake angle is equal to a 1t change across the width or diameter of the part being sheared?
If this force is greater that the capacity of the press (60,000 lb), compute the pressure when the full-capacity force of 60,000 lb is applied.
Find what the minimum height ( h ) must be for a pine board .04 m (4 cm) thick that will support the given load. b) Perform the same calculation if a 1040 steel material is used in place of the the
What is the pressure needed to control the fire at the sprinkler if each sprikler is to cover 100 sq. ft. Find the following for Benzene & Gasoling Benzene Gasolilne 1) Boiling Point 2) Flash Poi
Liquid butane a 25 C is sprayed into a steady stream of air. Suppose the goal is to achieve an exit temperature of 1000 K. Determine the necessary % theoretical air.
Derive an expression for the creep response of this combination of components for the case in which the applied load is held constant over the time period t > 0.
Calculate: a) The mass flow rate, and b) The work out of turbine in horsepower. Neglect the changes in kinetic energy and potential energy.
The water is saturated liquid (s=2.0946 kj/kg K). The direction of heat transfer is into the assembly. Determine the direction of the process.
If the downstream elevation is 100.00, what does the upstream elevation of the channel bottom have to be in order for the water to flow at normal depth of 5.0ft?
Efficient operation of a certain process requires that the Reynolds Number of the flow must be held at approximately 5*10^4. To what tempreture must the oil be heated to accomplish this?
Calculate the change in density due to the phase transformation of a metal (atomic radius = R) in each of the following situations: (a) transforms from a body-centered cubic.
Calculate the thermal efficiency and the work ratio of a Carnot cycle using air as the working fluid, if the maximum and minimum pressures in the cycle are 210 bar and 1 bar.
When the vehicle hits the ground, what is the magnitude of the maximum acceleration to which it is subjected? If the 160-lb drier is subjected to the same acceleratin what maximum force is exerted o
Find the angular velocity of each joint connection after 0, 5, and 10 seconds. Also find the velocity of the piston in the X direction at 0, 5, & 10 seconds.
Estimate the heat loss through the wall per unit area if the convective heat transfer coefficients in the inside and outside are 10 and 65 W/m2-K, respectively.
Determine the specific work produced (kJ/kg). If the turbine work is 70% of the isentropic value, determine the increase in entropy (kJ/kg-K) between the inlet and the outlet.
The work done during the compression process is equal to 150 kJ. Determine (a) The final volume in the cylinder (b) The final pressure of the air in the cylinder.
When car A hits B from behind the speed of car B jumps to 8 m/s. Find the coefficient of restitution and velocity of car A immediately after the impact, and find the energy lost during the impact.
Specify the horsepower of the fan motor for the 15,000-cfm system if the total pressure drop across the system excluding the pressure drop across the bed is 5 in. H2O.
What's the final temperature of the water? How much work is done by the water? How much time is required to complete this process? What is the entropy change of the water?
Draw a schematic diagram of the cycle starting with point 1 is the state of the refrigerant entering the compressor, state 2 existing the compressor and so on.
Calculate the 18 eigen frequencies for the following geometric conditions: 20 cm long, solid: 20 cm diameter; hollow: 30 cm OD with the same mass as the solid one.
A 3 kg particle is moving in the vertical y-direction with a velocity of 4 m/s when acted upon by a resultant force Fy=(5+2t^2) N where t is the time of application in seconds.