Physics, 28.03.2021 15:50 ahmadali89
LSE
9. A car accelerates constantly from 3 m/s to 8 m/s in 10 s and then travel with
constant speed for another 7 s.
(a)
Sketch the speed-time graph.
(b)
Determine its acceleration for the first 10 s of the journey.
(c)
Calculate the total distance travelled by the car.β
Answers: 1
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Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.
Answers: 3
LSE
9. A car accelerates constantly from 3 m/s to 8 m/s in 10 s and then travel with
constant...
constant...
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