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A large holding tank has an 8-in-diameter drain hole on the bottom horizontal surface of the tank. A stopper is lightly placed to cover the hole and a cable is attached to that stopper. When the tank needs to be drained, a person on a walkway over the tank is to pull on that cable. If the tank is filled to a depth of 3 0 ft with sea water, and the walkway is 8 ft above the fluid surface, how much force is required to remove the stopper?
The school cafeteria has found that they go through 9 sandwiches for every 6 tickets they sell to the students. Today they have 558 sandwiches available. How many lunch tickets can they sell today?
a 0.5-m3 vessel contains 10 kg of refrigerant-134a at -20oc. determine a the pressure b the total internal energy and c
a standard steel specimen of 13 mm diameter elongated 22 mm when it was subjected to a tensile force of 29.5 kN if the specimen has a length of 200 mm and that force applied within elastic range. what is the elastic modulus of elasticity ?
consider two solid blocks one hot and the other cold brought into contact in an adiabatic container. after awhile
a time traveler finds himself in an unknown place on earth at an unknown time of the year. the sky is cloudy at night
Determine the equivalent viscous-damping constant of the system.
design 4-5-6-7 polynomial for double-dwell cam follower with the following specifications. design the profile for rise
two staged steam turbines are arranged as shown in the diagram with a reheater in between the two stages. steam enters
superheated steam pressure at a 1 atm mean temperature of 800k and mass flow rate of 0.15kgs enters a thin
In Fig the flowing fluid is CO2 at 20°C. Neglect losses. If p1 = 170 kPa and the manometer fluid is Merriam red oil (SG = 0.827), estimate (a) p2 and (b) the gas flow rate in m3/h.
Steam is throttled from 9 MPa and 500V to a pressure of 7 MPa. Determine the decrease in exergy of the steam during this process. Assume the surroundings to be at 25C.
a 10-lb block b rests as shown on a 20-lb bracket a. the coefficients of friction are us0.3 and uk0.25 between block b
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