If we know that for a certain gas 2/5 of the total kinetic energy of the molecules is rotational and 3/5 is due to the motion of their centres of mass. a. calculate the average kinetic energy due to the motion of the centre of mass of one of these molecules at 300 k. b. if the temperature is to be increased by 20â°c, how much energy must be supplied to a mole of the gas to produce this temperature rise at constant pressure?

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

Convection currents are caused by differences in what two things?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?