Created by StemPy LabNitrogen gas at a certain temperature has a pressure of and a density of . Treating it as an ideal gas, the root-mean-square speed of its molecules is closest to
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← A steel measuring tape gives correct readings at 20°C. On a day when the temperature is 40°C, it is used to measure a rod, and the reading is exactly 10.000 m. The coefficient of linear expansion of steel is 1.2 × 10⁻⁵ K⁻¹, and the rod is made of a material that hardly expands. Compared with the reading, the true length of the rod isA particle moves along the x-axis with x = 5 sin(π t + π/3), where x is in centimetres and t in seconds. Its period, its position at t = 0, and its largest speed are →
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