Search over 10,000 free study notes

3x + y =23, 4x +4y=5212x+4y=92, 12x+12y=1568y=64y=8sub in3x+8=23, 3x=15x=5y=8x=5

An alpha particle has a much larger volume than a β particle, so when passing by an atom it is more likely to collide with an electron and knock it out of the atom causing the atom to be ionised (meaning ...

200nm

Approaching unseen poetry that you haven't been able to revise beforehand can seem daunting, but once you have a certain set of skills you'll be able to apply them to any text you come across! With practi...

English translation: I like to spend a lot of time time chatting to young people online and, sometimes, we study together. It's easier then reading books.