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A long, solid cylinder of radius 2 ft hinged at point A is used as an automatic gate, as shown in Fig. P3-61E. When the water level reaches 15 ft, the cylindrical gate opens by turning about the hinge at point A. Determine
(a) the hydrostatic force acting on the cylinder and its line of action when the gate opens and
(b) the weight of the cylinder per ft length of the cylinder.
What is the effect of immersion depth on a glass electrode and what aspects of the design of a pH electrode installation would lead to reduced manual maintenance and improved reliability
A path loss model is given by the following equation
A rigid tank is heated for 9 minutes with a 800W electrical heater. During this time 70kJ of energy is lost due to heat transfer to the environment. Find the temperature of the refrigerant at the end of the heating process.
a 0.15-m-diameter pulley turns a belt rotating the driveshaft of a power plant pump. the torque applied by the belt on
She asserts that the problems must be due to poor operational procedures. A newspaper approaches you for your opinion. Discuss how you should handle such an interview.
The velocity at the inlet is controlled so that it changes according to the following expression. V=a-ct^2, where a = 20m/s, c- 0.8m/s. If the tank initially contains 3kg of liquid water, determine the final mass at the end if 4 seconds of flow.
A harmonic force of amplitude 180 N and frequency 3.5 Hz acts on the mass. If the initial displacement and velocity of the mass are 15 mm and 5 m/s, find the complete solution representing the motion of the mass.
a cylinder containing 0.9 kg of ammonia has an externally loaded piston. initially the ammonia is at 2 mpa 180degc and
How is the combined pump-motor efficiency of a pump and motor system defined? Can the combined pump-motor efficiency be greater than either the pump or the motor efficiency?
The catapult is used to launch a ball such that it strikes the wall of the building at the maximum height of its trajectory. If it takes 1.5 s to travel from A to B, determine the velocity vA at which it was launched, the angle of release q, and t..
What is bioremediation? Briefly discuss how it is accomplished for VOCs and for chlorinated hydrocarbons. What is natural bioremediation?
a carbon steel ball with a diameter of 50 mm rests in a stainless steel hemispherical socket with a diameter of 60 mm.
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