Why are chemical changes considered “unseen”?
2 answers:
<span>Because they occur at an atomic level, changing the actual structure of the thing.
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Chemical changes are usually considered unseen because it changes the chemical form of the atom, by breaking or forming new bonds.
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Answer:
v1=18.46m/s
v2=29.8cm/s
Explanation:
We know that
the equation of the motion is
we can calculate w by using
Hence, we have that
the speed will be
hope this helps!
1. e) None of the above is necessarily true.
2.d) Without knowing the mass of the boat and the sack, we cannot tell.
Answer:
Study hard , focus on your studies and alyways ask questions .
what? Sorry but I don't understand