The mean free path of an oxygen molecule is 2.0 � 10-5 m, when the gas is at a pressure of 120 pa and a temperature of 275 k. the atomic mass of oxygen is 16.0 g/mol, the boltzmann constant is 1.38 � 10-23 j/k, avogadro's number is 6.02 � 1023 molecules/mole, and the ideal gas constant is j/mol � k = 0.0821 l � atm/mol � k. the radius of an oxygen molecule is closest to
0.28 nm.
0.24 nm.
0.22 nm.
0.26 nm.
0.30 nm.

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

false

hope this : d

its lower due to the doppler effect.: apex