Ns: select the correct answer from each drop-down menu. brass and bronze are both of copper because copper is the component in brass and bronze. nextreset

Explanation:

When two or more number of different metal elements are mixed together to result in the formation of a new metal in order to have greater strength or resistance towards corrosion then the resulting metal formed is known as an alloy.

For example, both brass and bronze are alloys of copper.

In brass there is 67% copper and 33% zinc are present. On the other hand, in bronze there is 88% copper and 12% tin are present.

This means that copper is the main component which is present in both bronze and brass.

Hence, we can conclude that brass and bronze are both alloys of copper because copper is the component in brass and bronze.

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.