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Water backs up behind a concrete dam as shown. Leakage under the foundation gives a pressure distribution under the dam as indicated. If the what depth, h is to great, the dame will topple over about its toe (point A). For the dimensions given, determine the maximum water depth for the following widths of l= 20, 30, 40, 50, and 60 ft. Base your analysis on the unit length of the dam. The specific weight of concrete is 150 lb/ft^3.
a catalog lists the basic dynamic load rating for a ball bearing to be 7050 lb for a rated life of 1 million
a pressure tranducer outputs 0.23 volts at 2.39 psi and 4.71 volts at 28.13 psi. assuming the pressure transducer is
an insulated rigid tank with a volume of 10ft3 is connected by a valve to a supply line containing steam at 500 psia
matt has perfected the art of bungee jumping such that from a bridge above a river he can fall and just touch the
A plate, 0.001 in distant from a fixed plate, moves at 2 feet per seconds and requires a force of 0.04l bar per feet square to maintain this speed. determine the fluid viscosity of the substance between the plate.
shape memory alloys are metals that undergo a change in crystaline structure within a relatively narrow temperature
consider a system in which r 134-a is moved through an evaporator. the evaporator removes energy from the the
The heating is to be done in a mixing tank by direct injection of the steam, all of which condenses. Determine the two inlet mass flows needed to meet the desired hot water flow rate.
air enters an adiabatic compressor at 20 degc and 100 kpa at a rate of 2 kgs and exits at 700 kpa. if the power input
consider a roof of a house of thickness l 20 cm thermal conductivity k 1 wm k and emittance of the external surface
Estimate the Schmid Factor, which is used to convert the CRSS into a critical tensile 'yield' stress. Use the measured angle between the slip trace and the sample long axis
the y-component of the force f which a person exerts on the handle of the box wrench is known to be 320newton. determine the x-component and the magnitude of force.
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