Physics, 07.11.2019 23:31 sneakypanther19
Carbon is allowed to diffuse through a steel plate 9.7-mm thick. the concentrations of carbon at the two faces are 0.664 and 0.339 kg of carbon per m3 of iron, which are maintained constant. if the preexponential and activation energy are 6.5 x 10-7 m2/s and 82 kj/mol, respectively, calculate the temperature (in k) at which the diffusion flux is 3.2 x 10-9 kg/(m2-s).
Answers: 2
Physics, 22.06.2019 05:00
Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above
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Physics, 22.06.2019 07:30
Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life
Answers: 3
Physics, 22.06.2019 09:40
(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)
Answers: 1
Carbon is allowed to diffuse through a steel plate 9.7-mm thick. the concentrations of carbon at the...
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