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The analysis of electromagnetic radiation is widely used by astronomers. Contrast emission and absorption spectra in terms of how they are produced.

Noone?

Or you could just click the 'reply with quote' on the bottom of the poster's message?

Anyone?

Galvani: - first person to generate an electric current by placing two different metals connected at one end into a dissected frog - misinterpreted the movement in the frog’s muscle as ‘animal electricity’ - inspired others to investigate the production of electricity. Volta: - made the first...

LOL, once you finish with the question you answered you're meant to also post up a question.

Just wondering, if we can just focus on this (as it is my weakest module =S), and how many people actually do this module on these forums. Question: Explain how two other characteristics or properties of a star can be deduced by observing the light received from the star.

Just wondering, if we can just focus on this (as it is my weakest module =S), and how many people actually do this module on these forums. Question: Explain why graphite rods are used in an electrolytic cell.

Where can you do that? O.o

98?

95-96 And nice mark btw, beat me by 1 =(

Use the search function on the top right.

*Aligning. And yep, but nothing beats 4U ^^

So, it is highly probable that I will get 94-96 as my external mark?

Terry Lee has provided solutions, and I used those to mark my paper. =)

Guys, I only got a raw mark of 62/70 for the Mathematics Extension 1 -_-. What do you think it'll align to? Hopefully mid-90s?

Where's 13d?

Nope.

w00t!

I know. That's what I did on my first attempt, but it was way more work relative to what the answers had. Hence, I wanted to understand the answers, as it will make me more efficient in tomorrow's exams. However, if something of a similar disposition arises in tomorrow's exams and I somehow...