Would it be better to collide head-on with an identical car traveling at the same speed or collide with a stationary brick wall?

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

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

The energy released by a nuclear fusion reaction is produced when