Answers: 1
Physics, 21.06.2019 13:30
An astronomer at the equator measures the doppler shift of sunlight at sunset. from this, she calculates that earthâs tangential velocity at the equator is 465 m/s. the centripetal acceleration at the equator is 3.41 ď´ 10 ď2 m/s 2 . use this data to calculate earthâs radius.
Answers: 3
Physics, 22.06.2019 05:20
Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.
Answers: 2
Physics, 22.06.2019 10:30
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
Physics, 22.06.2019 14:30
What was the first instrument to ever record an earthquake?
Answers: 1
What are the primary colors?...
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