Three friends went for a drive that was 30 km in length. Erin said they had travelled 30000 m today. Katie said it was 300 m and Ben said they had travelled 0.03 m. Who is correct?

In 1995 a research group led by eric cornell and carl wiemann at the university of colorado successfully cooled rubidium atoms to the 20-200 nk temperature range. assuming (incorrectly) that the rubidium atoms behave liké particles of a classical ideal gas, calculate the rms speed of a rubidium atom at a temperature of 112.0 nk. in the experiments one particular isotope of rubidium was used, rubidium-87. the molar mass of this isotope is 86.91 q/mol. tries 0/20 submit answer

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity