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How does a tsunami form and why do their waves increase in size as they approach the shore?

This question is initially asking for the understanding tsunami formation process. It would be useful to provide a brief definition of a tsunami, so the examiner knows you have a clear idea of what a tsunami...
AS
Answered by Alice S. • Geography tutor
4756 Views

I am producing work of a very high quality, but this is not reflected in my grades. Why?

It is very common for A-level Art students who produce work which displays outstanding quality and technical skill to feel that their abilities are not reflected by their grades. This problem arises when stu...
RM
Answered by Reuben M. • Art tutor
2455 Views

Where does integration by parts come from?

The best way to do well in maths, is to learn where things come from. Mastering the basics makes everything else much easier! To start, consider the product rule with two functions u(x) and v(x) (using dashe...
TM
Answered by Tom M. • Maths tutor
3595 Views

The first floor of an ancient japanese tower has 150 steps. Each floor above has 5 fewer floors than the previous. So, the second floor has 145 steps, the third 140 etc. How many floors does the tower have if the final floor has 30 steps leading to it.

Note this is an arithmetic series problem, so we use the equation: x n = a + d(n-1). Number of steps on the first floor is 'a', i.e. a = 150. Difference in the number of steps on each subsequent floor is -5 ...
JF
Answered by Joel F. • Maths tutor
3489 Views

Identify which 2 of the following processes involve an exothermic change: melting, boiling, freezing, deposition and sublimation

An exothermic reaction involves an output of heat, so heat is lost overall. This would mean that boiling and melting are definitely not exothermic as they involving putting in heat. Freezing is an exothermic...
ES
Answered by Ellen S. • Chemistry tutor
6919 Views