Find the average translational kinetic energy and the rms speed of the o2 molecules in air at room temperature (20°c). [hint: the atomic mass of oxygen is 16.0 g/mol.]

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space. b. we'll know it immediately because it will be brighter than the full moon in the sky. c. we won't know about it until 600 years from now. d. none of the above.

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?

What causes the development of most clouds and precipitation in the atmosphere?