Consider the double-fluid manometer attached to an air pipe shown. if the specific gravity of one fluid is 14.514.5, determine the specific gravity of the other fluid if pressure of air was 81kpa81kpa. take the atmospheric pressure to be 100 kpa.

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me