Physics, 20.09.2019 01:30 nemalmaqsoodp53nhh
Suppose a car is traveling at +20.3 m/s, and the driver sees a traffic light turn red. after 0.207 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 7.00 m/s2. what is the stopping distance of the car, as measured from the point where the driver first notices the red light?
Answers: 3
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Physics, 21.06.2019 21:00
A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.
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Physics, 21.06.2019 21:30
The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?
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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
Suppose a car is traveling at +20.3 m/s, and the driver sees a traffic light turn red. after 0.207 s...
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