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Here, we must consider Newton's Law of Universal Gravitation. This states that the gravitational force acting between two bodies is proportional to the masses of each body and inversely proportional to th...

Ultrasound is any frequency above that of human hearing - around 20 kilohertz.

Ultrasound imaging works by emitting a known intensity of ultrasound at a speci...

Different exam boards may want a different format of answer, so before beginning this question, it would be worth thinking how other six mark questions are marked in other papers.

Edexcel wan...

(Draw hydraulic jack diagram using Pen tool) Firstly, we need the quation for pressure. Pressure is measured in Nm^2 which tells us that P=F/A. Where P is the pressure, F is the force in Newtons and A is ...

A vector is a measurement of something that has more than 1 number associated with it, for example velocity. I can tell you how fast a car is going using the magnitude of velocity, speed, and I can tell y...