Which of the following statements is true? the square root of the molecular weight of a gas is equal to its rate of diffusion. the rate of diffusion of a gas in inversely proportional to the square root of its molecular weight. the rate of diffusion of a gas is directly proportional to the square root of its molecular weight. the square root of the molecular weight of a gas is not related to its rate of diffusion.

The answer is: The rate of diffusion of a gas in inversely proportional to the square root of its molecular weight.

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.