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A Ni-based superalloy has 0.2 μm thick oxide layer. When placed in a burner rig to test for oxidation, it was observed to grow to 0.3 μm in 1 h. If the superalloy follows a parabolic oxidation law (x2 = a + bt, where x is the thickness, t is the time, and a and b are constants) what is the thickness after one week?
Beverage in cans 150 mm long and 60 mm in diameter is initially at 27°C and is to be cooled by placement in a refrigerator compartment at 4°e. In the interest of maximizing the cooling rate,
at steady state moist air at 42c 1 atm 30 relative humidity is mixed adiabatically with a second moist air stream
The thrust, T, of a marine propeller is assumed to depend only on its diameter, D, the fluid density, the viscosity, the revolutions per unit time, and its forward velocity, V. Express this dependence in non-dimensional terms. Is one of the ?–product..
Determine the temperature of the electric heater element and drawing of the temperature profile.
Computer programs and other software (including Web Pages like this one). This includes graphics and icons and the like, which may also be "graphic works". OK, my work is on the list. How do I copyright it?
The temperature outside a house is -20-C and inside it is 20-C. What is the ratio of the density of the outside air to the density of the inside air? Would in?ltration, which results from cracks around the windows, doors, and siding, etc., occur e..
a system consists of 2 kg of carbon dioxide gas initially at state 1 where p1 100 kpa t1 300 k. the system undergoes
A 6-lb collar can slide without friction on a vertical rod and is held so it just touches an undeformed spring.
What is a 90 percent confidence interval for the standard deviation of the thickness of a washer produced by this procedure?
It is desired that the reflectivity of light at normal incidence to the surface of a trans- parent medium be less than 5.0%. Which of the following materials in Table 21.1 are likely candidates: soda-lime glass, Pyrex glass, periclase, spinel, pol..
A rocket of mass 2000 Kg is deceleration at 2m/sec here on planet earth, what is the weight of the rocket
compare it with efficiency of an otto cycle operating with the same maximum pressure?
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