The crash of flight 143:

calculate the volume of fuel needed for a flight if jet fuel has a density of 0.803 kg/l and a mass of 23,800. kg. the density equation is mass/volume. rearrange the equation to solve for volume.

Volume = 29,638.85 L

Explanation:

We are given;

Density of Jet fuel = 0.803 Kg/L

Mass of Jet fuel = 23,800 kg

We are required to determine the volume of the Jet fuel

The formula of Density = Mass/volume

Rearranging the equation;

Volume = Mass/Density

Therefore;

Volume of jet fuel = 23,800 kg/ 0.803 kg/L

                              = 29,638.85 L

Therefore, the volume of jet fuel 29,638.85 L

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.