Answer:
Option B

Explanation:
Given information
Radius of container, r=12cm=12/100=0.12m
Angular velocity= 2 rev/s, converted to rad/s we multiply by 2π
Angular velocity, 
We know that speed, 
Centripetal acceleration,
and substituting
we obtain that

Substituting \omega for 12.56637061 and r for 0.12

Rounded off, 
Of the gravitational pull and other things like mass. Planet earth it,s self as you said sir.
Answer: Around 364 to 480
In an open system such as a campfire, matter can lose particles, gain particles or exchange particles.