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2t^-2

How you structure your answer, in my opinion, will depend on how you like to write. There are several ways to structure an essay, and it might be worth you experimenting with a few before you settle on on...

Both molecules have a C-Br bond, which will be polar due to their difference in electronegativities (bromine is more electronegative than carbon). In CBr3CBr3 the dipoles cancel so the overall molecule is...

For this we have to use trignometric identities, e.g Tan(x)= sin(x)/cos(x), sin²(x) + cos²(x) = 1, 1/sin(x) = cosec(x)
ta...

Standing waves are produced from the superposition of 2 progressive waves with the same wavelength, travelling in opposite directions. The pattern consists of nodes and antinodes. Nodes are formed from d...