HURRY PLEASE The density of tin is 7.3 g/cm3 and aluminum is 2.7 g/cm3. What is true about the density of a tin can that is coated with aluminum

1. Their is not enough information to determine the density of a can

2. The density is between 2.8 g/cm3 and 7.3 g/cm3

3. The density is 7.3g

4. The density is 2.7g/cm3

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

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.