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How much energy will be required to peel off a circular disc of graphene 100 µm in diameter from a silicon dioxide substrate?
water is pumped from a tank point 1 to the top of a water plant aerator point 2 at a rate of 3.0 ft3s. adetermine the
Centrifugal pump draws water (r=62.4 lbm/ft^3) at a rate of 1200 gpm, and 70 degrees F (Volute Pressure =.3631 psia) from a reservoir through a 4 in diameter pipe and delivers it to a 2 in diameter discharge pipe. The pump is located 10 ft above the ..
measure the velocity of air. If the deflection deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 kg/m3.
The required cross sectional areas for bar, given an allowable tensile stress of 45 ksi, and an allowable compressive stress of 24 ksi. Tabulate your result showing bar forces, cross sectional areas and lengths
The efficiency of a pump is assumed to be a function of the flow rate Q (cubic ft/sec), pressure increase? p, pipe diameter d, and density and viscosity of the fluid. Use dimensional analysis to find an expression for the pump efficiency.
a person weighing 800 lbf climbs a flight of stairs that extends a vertical distance of 300ft. calculate the work and
a rigid insulating tank that is initially evacuated is connected through a valve to a supply line that carriers helium
A spine attached to a wall maintained at a uniform temperature Tb has the shape of a circular cone with base diameter b, height L and a concave parabolic profile, and it is exposed to a fluid at a uniform temperature T?.
a four-cylinder engine with a 9.5-cm bore and an 8.75-cm stroke has a 7 clearance. the engine rotates at 2500 rpm. the
Steam heated at constant pressure in a steam generator enters the first stage of a supercritical reheat cycle at 28 MPa, 520°C. Steam exiting the first-stage turbine at 6 MPa is reheated at constant pressure to 500°C. Each turbine stage has an isentr..
a gate in the shape of a quarter-cylinder hinged at a and sealed at b is 3 m wide. determine the horizontal and
the refrigerator steadily receives a power input of 0.15 kw while rejecting energy by heat transfer to the surroundings
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