Hydraulics is a section on the P3 specification: there’s nothing too tricky, just an equation you need to know how to use,and a few facts that you should know.
A transformer is a device that “transforms” the voltage of an electrical current (please, no more of the robots joke!). They have many uses – in fact, we see them every day. While you do need to know about them for your exam, it’s probably a good idea to have a general idea about their purpose, just for getting through life.
They’re back in force (if you’ll pardon the pun) – different forces you need to know about for the AQA P3 exam, and how they make stuff work. Ready? Here we go…
Light is the reason we can see anything, it reflects off an object and then bounces into our eyes, and voilà We can see it! Light is the fastest thing we know of – in fact, with any luck, it is the fastest thing that can possibly be – it travels at about 300 million m/s in the air. Now, there are some people (like me!) who can’t see properly without glasses, the light bounces into my eyes the same as you, but it goes wrong there. So, why do we need lenses and how do they work?
So, what is circular motion? Well: it’s when something moves… in a circle. So, now we’ve covered that, let’s all go back to Facebook and Twitter. Going now! Bye! Oh, wait? You need to know more than that? Like what causes it? Where it’s used in real life? What happens when it all goes wrong?
Well: in that case, you might as well get comfortable…