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A hi-vol clean filter weighs 18g and the dirty filter wighs 18.6g. the initial and final air flows are 70 and 60 ft3/min.
What volume of air went through in 24hrs?
What was the particulate concentration?
Water at a pressure of 13 atm, at street level, flows into a building at 3m/s through a 6 cm diameter pipe. The pipe tapers down to a 2 cm diameter by the top floor 50 m above.
A water tank consists of a cylindrical part of radius r and height h, and a hemispherical top. The tank is to be constructed to hold 500 m3 of fluid when filled. The surface area of the cylindrical part is (2*pi*r*h)
During frequent braking under race conditions the disk brake rotors on the car described above reach a temperature of 500C. These disk brakes rely on forced convection to cool them. The dimensions of each disk rotor are: outer radius 130mm
Determine how many buses needed to provide service on the following route with the indicated characteristics: -Route length: 16 miles (one way) -Headway: 15 minutes -Average number of stops made during run, one direction: 22
after falling from rest from a height of 32 m a 0.45 kg ball rebounds upward reaching a height of 22 m. if the contact
The total dissolved inorganic carbon (TIC) of a sample of groundwater is 8.33 mM. The temperature of the aquifer is 15C, the pH is 7.5, and the ionic strength is 0.05 M. What is the H2CO3, HCO3-, CO3 2-, and the partial pressure of CO2? [Use activ..
The 30-N uniform rod has length of l=1m. If s=1.5m determine the distance h of placement at the end A along the smooth wall for equilibrium.
What is the shape of a water droplet from a leaking tap. How does that shape change before and after dropping from the tap. What properties of fluids play a role in this change in shape.
Find the velocity of the air downstream of the restriction, and show that the enthalpy is essentially the same before and after the throttling process. Also find the change of entropy.
The electric motor at A exerts a torque of 800N.m on the steel shaft from A to D. This has a torque of -300N.m at B and -500N.m at C. Design specificaions require that the diameter of the shaft be uniform from A to .
a storage tank has a diameter of 80 ft, a height of 25ft and contains oil to a height of 15ft. the suction pumps, which can handle 15000bbl/d, are started, but the safety valves are clogged and a vacuum is drawn in the tank.
a lagoon is 20 ft by 80 ft with a depth of 5.5 ft .Wastewater from households flow into the lagoon at 260 gal/day .How many days would it take to fill the lagoon
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