Physics, 24.02.2021 03:30 amymelvinlove
During a 980 miles cruise, a ship travelled 590 miles
in 7 hours first. Then the ship changed its speed for
the rest of the trip. If 13 hours were spent on the
whole cruise, what was the speed for the rest of the
trip?
mph
Answers: 3
Physics, 21.06.2019 21:50, mckinley2006
What is the length x of the side of the triangle below? (hint: use the cosine function)
Answers: 1
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How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.
Answers: 1
Physics, 22.06.2019 10:50, afonseca73
Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.
Answers: 3
Physics, 22.06.2019 17:50, manou76
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
Answers: 1
During a 980 miles cruise, a ship travelled 590 miles
in 7 hours first. Then the ship changed its s...