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The excess pressure inside a bubble (discussed in Chapter 1) is known to be dependent on bubble radius and surface tension. After finding the pi terms, determine the variation in excess pressure if we (a) double the radius and (b) double the surface tension.
Which halide would form first and at what potential? Is the cell galvanic or electrolytic?
Determine the number of revolutions that the motor executes in a) reaching its rated speed, b) coasting to rest.
Electric power is generated by installing a high powered turbine-generator at a site 120 m below the free surface of a large water reservoir. Determine the power generation potential if the water can be steadily supplied at 2.4 m^3/s. Assume a densit..
A heated cylinder, 0.0635 m long and 0.0127 m diameter, is exposed to an air stream in cross flow arrangement having air speed of 10.5 m/sec. If the cylinder surface temperature is 50 C and the air temperature is 22 C, estimate the power required to ..
Show that this motor has the power to do the job, and determine an approximate gear ratio with which it should be used in order to supply the necessary combination of torque and speed.
(a) At what surface temperature must the plate be maintained to achieve a condensation rate of m = 25 kg/h? (b) Compute and plot the surface temperature as a function of condensation rate for 15 m 50 kg/h.
A fire water system on an oil rig is supplied by an electric motor driving a mechanical pump. A fire detection system is installed that normally starts the motor automatically but which can be set to manual override. The electric motor is normally..
It is subjected to concentrated loads of 20,000 lb at each quarter point and an axial tensile load of 50,000 lb. Calculate the maximum combined tensile and compressive stresses.
Consider a single crystal of nickel oriented such that a tensile stress is applied along a [001] direction. If slip occurs on a (111) plane and in a [101] direction, and is initiated at an applied tensile stress of 13.9 MPa (2020 psi), compute the..
A closed, frictionless, piston-cylinder assembly contains 4 lbm of H20. Beginning with an initial volume of 10 ft^3, the H2O is compressed slowly until the volume has been reduced to 10 percent of the initial volume. During the process, heat transfer..
two reversible power cycles are arranged in series. the first cycle receives energy by heat transfer from a reservoir
What would the annual savings be if the product were produced in the economic order quantity?
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