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Using the velocity design method, determine the minimum required size of hot and cold water supply pipes serving an apartment containing a kitchen sink, dishwasher, lavatory, bathtub, and tank-type water closet. Use a maximum velocity of 8 ft/s. Base pipe size on Type L copper tube (Table 12.9 in Chapter 12).
air flows parallel to an isothermal 100c flat plate with a free stream velocity of 10ms and free stream temperature of
a 2mm diameter metor of specific gravity 2.9 has a speed of 6 kms at an altitude of 50000m where the density of air is
Determine the applied torque required to accelerate a rotor of mass 100 kg and radius of gyration 500 mm from a speed of 50-300 rpm in a time of 12 s. Neglect bearing friction.
At steady state, air at 200 kPa, 325 K, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross sectional areas. The inlet cross sectional area is 6 cm squared. At the duct exit, the pressure of the air is 100 kP..
The spring is compressed to solid length by tightening the nut with a power wrench. The trigger pin is inserted through the bottom cap and into the groove to secure the gun in the loaded position. The nut is then backed up all the way and the trig..
for the following epicyclic gear train below gear 2 has a radius of 12 cm gear 3 has a radius of 6 cm and gear 4 has a
When a positron and an electron meet, they are both annihilated into pure energy. Calculate how much energy (in MeV) is released in this reaction assuming that each particle is moving at 50% the speed of light.
Ammonia at 10ºC and mass 10 kg is in a piston cylinder with an initial volume of 1 m3. The piston initially resting on the stops has a mass such that a pressure of 900 kPa will float it. Now the ammonia is slowly heated to 50ºC. Find the final pressu..
a concrete slab measuring 0.3m x 4m x 6m initially at 298 k is exposed to the sun for several hours after which its
the walls of an insulated lunch box are made of inch-thick styrofoam with a thermal conductivity of 0.05wmk. if an ice
a specimen of aluminum having a rectangular cross section 10 mm x 12.7 mm 0.4 x 0.5 in. is pulled in tension with
While the outer surface exposed to the ambient air at 30oC with heat transfer co-efficient of 17 W/m2K. Calculate heat loss for 3 m length of the tube.
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