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A solid cube of copper with each side = 1.0 ft is convened into metallic powders of spherical shape by gas atomization. What is the percentage increase in total surface area if the diameter of each particle is 0.004 in (assume that all particles are the same size)?
Pressure in a water container can be measured by an open vertical tube called a piezometer. If the expected water rise is about 26 cm, what tube diameter is needed to ensure that the error due to capillarity will be less than 3 percent? (Round the..
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
Tall buildings can develop a significant difference in pressure between the inside and the outside of the building. Air lock entrances are used at the ground level so the pressure at the ground floor is not the same as atmospheric pressure.
The steel rails of a continuous, straight railroad track are each 60 ft long and are laid with spaces between their ends of 0.25 inches at 70 degrees F. At what temperature will the rails touch end to end? What compressive stress will be produced in ..
Determine the support reaction of the beam.assume that a is pin ,b,c,and d are roller and two points are hinge
Do the problem again but for an alum or iron floc with an overflow rate 20 m3/day.m2?
Given the following information, determine the required DO concentration in the treatment plant effluent discharge in order to ensure that at no point downstream the DO in the river drops below 4 mg/L
Use the randn function to create 1000 values in a normal (Gaussian) distribution of numbers with a mean of 70 and a standard deviation of 3.5. Create a histogram of the data set you calculated.
The combined weight of a bicycle and its rider is 190 lbs, and when the rider is on the bike, their frontal area is 5.4 square feet, with a drag coefficient of 1.2. The coefficient of rolling resistance can be taken to be a constant for all speeds
Use the ideal gas law to estimate the mass of the air (in KG) contained in the room. State clearly what your approximate temperature , volume are. Molar mass of air is about 29.
What is the displacement and acceleration of the automobile at t-15, 45, and 50 seconds. Construct a v--t graph from 0 to 50 seconds.
Payments are exchanged every year, with one exchange having just taken place. The swap will last two more years. What is the value of the swap to the financial institution? Assume all interest rates are continuously compounded.
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