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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; inner radius 50mm; thickness 10mm. (Assume the disk is a simple donut shape ).
i) What is the surface area of the disk rotor (in m2)? (Include both sides and the edges)
ii) Given the heat transfer of the disk rotor is 120 W/m2/K, how much heat energy is radiatred from each of the disk rotors when the ambient air temperature is 30 C.
The pressure inside the cylinder is 50 atm and temperature is 298o K. Provide your engineering judgement (with calculations) to justify or not justify the shipment of the cylinder.
A toothpaste factory situated on a large river disposes of a waste water containing villiamite (NaF) to the river on a continuous basis. The minimum flow in the river is 210 m3/s, and the discharge rate from the treatment plant is 12.5 m3/s.
THE HOME DEPOT IN RED HOOK ,BROOKLYN IS LOOKING TO RENOVATE THEIR STEEL ROOF TRUSS.YOU HAVE BEEN ASKED TO DETERMINE THE CENTROID,MOMENT OF INERTIA,SECTION MODULUS AND RADIUS OF GYRATION OF THE DOUBLE ANGLE.
Analyze the frame by moment distribution. Determine all reactions and draw the shear and moment diagrams, locating points of inflection and labeling max and min shear and moment values.
The behaviour of structural materials using comparative statement when they are formed into structural member
You purchased a machine 5 years ago for $100,000 and now the machine costs $135,000. What is the average annual inflation rate for this machine
a ceramic matrix composite contains internal flaws as large as 0.001 cm in length. The plane strain fracture toughness of the composite is 45 MPa sqr(m), and the tensile strength is 550 MPa.
Northern Tundra Telephone (NIT) has received a contract to install emergency phones along a new 100-mile section of the Snow-Moose Turnpike. Fifty emergency phone systems will be installed about 2 miles apart.
Find the coeficient of friction between the trusses and the inclined. Three trusses are 1m long 1kg each.
A fixed beam of span 6m carries point loads 20kN and 15kN at 2 m and 4 m from the left end respectively. Find the support movements draw SFD and BMD
if the settling velocity of a particle is 2.8 mm/s and the overflow rate of an upflow clarifier is .56 cm/s what percent of the particles are retained in the clarifier
Find the horsepower added if the flow through the system is 400 m^3/s. The entrace is sharp, the two bends are equivalent to smooth 90 degree bends with R=1 ft, and there are two fully open gate valves
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