Top answers

How does refraction work?

The fastest light can travel is when it is in a vacuum, where it travels at 3x10^8 metres per second. However, when light travels through another substance or material (another 'medium'), it gets slowed down...
CP
Answered by Conor P. • Physics tutor
12768 Views

How do I use equations of motion ('suvat') to find a missing quantity?

First, be familiar with the equations of motion:s = displacementu = initial velocityv = final velocitya = acceleration (constant)t = time v = u + ats = ((u+v)t)/2s = ut + (at^2)/2v^2 = u^2 + 2as Second, iden...
JH
Answered by Jessica H. • Physics tutor
4211 Views

why does applying the brakes of a car cause the temperature of the breaks to increase?

The increase in heat is caused by friction between the brakes and the wheels. This work done between the brakes and the wheels, causes a decrease in kinetic energy in the wheels, resulting in an increase in ...
HH
Answered by Hugo H. • Physics tutor
16224 Views

Why is the area of a triangle 1/2 * b * h?

This question is more easily answered with the help of multiple diagrams, but:1) Draw a rectangle, and draw a line between the top left corner and the bottom right corner. This line divides the rectangle in ...
TD
Answered by Tutor5499 D. • Maths tutor
6103 Views

How do you structure an essay response?

The basic essay structure is as followed: INTRODUCTION: This is a wider , concise and whole interpretation of the text at hand. It is usually better to write this at the end of an essay as you have deeply an...
RL
3970 Views