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A point charge causes an electric flux of -750 Nm/C to pass through a spherical Gaussian surface of 10.0 cm radius cuntered on a charge.
A water pump increases water pressure from 10 psia to 50 psi. determine the power input required in hp to pump 1.2 ft^3/s of water. Does water temp in the inlet havy any effect on the required flow
The golf ball is hit at A with speed of V=40m/s and directed at an angle of 30 degrees with the horizontal. Determine the distance d where the ball strikes the slope at B.
The rate constant has a value of k =0.75 m3/mol-h at 400 K. Assume ideal gases. (a) Calculate the time required to achieve 60% conversion of A in a constant pressure batch reactor.
The motion of a particle is defined by the relation x=(6t^2)-8+40cos((pi)t), where X and t are expressed in inches and seconds, respectively. Determine the position, the velocity, and the accelerat
Determine the radius of the crank R and the speed n of a slider crank mechanism, used in a shaker table. It is required that the average speed of the table is 5 m/s.
The constant pressure specific heat of vapor is 2190 J/kg*C, determine the heat transfer coefficient as a result of convection between the outer pipe surface and the surrounding air.
Determine the net work of the cycle in kJ and the heat transfer for process 2-3 in kJ. Is this a power cycle or a refrigeration cycle? Explain.
A 230 V shunt motor, having an armature resistance of 0.05 ohms. A while running light at 1120 rpm. Determine the motor efficiency when the line current at a given load is 46 A.
If the room air temperature needs to be maintained at a constant 21 C how many window air conditioning units are required.
For each set of temperature readings, calculate the sample mean, the range and the sample standard deviation.
Can this process occur adiabatically? if yes, determine the work per unit mass of air, in Btu/lb, for an adiabatic process between these states. If no, determine the direction of the heat transfer.
At a ceratin instant the temperature distribution in the cylinder is T(r)= a+br2, where a and b are constants. Obtain expressions for the heat transfer rate at ro and the fluid temperature.
What weight (lbs/gal) drilling mud would be required to balance the expected formation pressure at this depth?
The tank contains water to a depth of 5ft plus a depth of 2.5ft of oil on top of the water. The SG of the oil is .82. Determine the magnitude and location of the resultant force on one end of the ta
The depth on the right hand side is 20ft. The gate is 8 ft tall and hinged at the top. In order to keep the gate closed, determine the external moment that must be imposed at the hinge.
The weight of the disk is 20 lbs. A person dives down to remove the disk. How much verticle force must the diver exert to lift the disk from the drain?
What is engineering strain, modulus of elasticity. What is the yield strength at .2% (or .002) strain offset, and plot engineering stress-strain curve.
An aluminum alloy specimen of .562" diameter and 2"gauge length was subjected to loads. What is engineering stress?
What equal amount can you withdraw from the account at the end of each month for three years and leave $4000 in the account?
Calculate the specific weight in lbf/ft^3 on Earth and on the moon. Acceleration of gravity on the moon is 5.47 ft/s^2.
List all assumptions and show all calculations. Is this the force that is actually needed to lift the stopper? Explain.
4-lbm of water at 400 psia initially fills the 2.5-ft3 left chamber of a partitioned system. Determine the final pressure of water, in psia, and the total internal energy, in Btu, at the final state.
Streptomycin, an antibiotic, is produced on a large scale in theUnited States. Develop an equation to determine the ratio of streptomycin solution to total solution.
Determine the overall efficiency of the pump motor unit and the pressure difference between the inlet and the exit of the pump.