Using the root-mean-square speed, vrms, estimate the mean free path of the nitrogen molecules in the classroom as room temperature (300 k). what is the average time between collisions? take the radius of a nitrogen molecule to be 0.1 nm and the density of the air to be 1.2 kg/m3 . a nitrogen molecule contains 28 nucleons (protons and neutrons). vrms = 515 m/s; t = 0.6 ns

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2