Physics - Heat & Thermo Question with Solution | TestHub

The root mean square (rms) speed of oxygen molecules $\left({\mathrm{O}}_2\right)$ at a certain temperature T (degree absolute) is V. If the temperature is doubled and oxygen gas dissociates into atomic oxygen, the rms speed remains unchanged.

The root-mean-square speeds of the molecules of different ideal gases, maintained at the same temperature are the same.

A rocket moves forward by pushing the surrounding air backwards

According to Newton's law of cooling, the rate of cooling of a body inside an enclosure of constant temperature is proportional to the temperature difference between the body and the enclosure. (Assume the temperature difference between the body and the enclosure to be small)