Top answers

How do I simplify fully (p^3 x p^4)/p^2?

At first this looks quite daunting as it combines a number of different indices (powers) and a fraction. The rules for indices are just something that you have to learn - so don't worry if you don't know the...
ER
Answered by Emily R. • Maths tutor
15061 Views

Why do ionisation energies increase across a period?

It's experimentally observed that ionisation energies have a general increase as one moves across the period: the first ionisation energy of lithium is ~500 kJ mol‑1, whereas that of neon is over 2000 kJ mol...
TD
Answered by Tom D. • Chemistry tutor
11682 Views

What is the difference between constructive and destructive waves?

So, constructive waves are the waves that build up the beaches. They have a large 'swash', which means they can carry deposits of sand and other materials far up the beach. They are much lower than destructi...
CB
Answered by C B. • Geography tutor
103715 Views

How do I revise for my English exam?

English exams can seem impossible to revise for, but that isn't the case. English exams can actually be the most fun to revise because it's less about remembering tonnes of specific facts and more about reme...
EP
8408 Views

What's the best way to memorise quotes for a closed-book exam?

Learning quotes for a closed-book exam can seem like a very daunting task, especially when you've studied a text in detail for an entire year. But it is an essential task as examiners are looking for good un...
EC
14598 Views