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Find the magnitude of the force on an electron that is travelling with velocity 2 x 10^4 ms^(-1) in the x direction through a uniform magnetic field of strength 2T in the y direction.

This question tells us we only need to consider the magnitude of the force, and since the magnetic field and electron's velocity are perpendicular, we can simply use the equation

Answered by Sally H. • Physics tutor

16970 Views

What are the examiners looking for? What is "good" essay technique?

Hi there! This is a great question as it shows you are aware that the exam isn't just about knowledge. In Edexcel Religious Studies, the main aim of your essays is to convey both content and the fact y...

Answered by Lily M. • Religious Studies tutor

4204 Views

What is entropy?

In chemical reactions entropy can be considered to be a measure of the number of ways which molecules and their quanta of energy can be arranged and is measured in J K^-1 mol^-1.For a ...

Answered by Gowan W. • Chemistry tutor

3706 Views

What is democracy?

Bernard Crick noted that democracy is 'perhaps the most promiscous word' in political discourse. Therefore, establishing precisely what is meant by 'democracy' is a difficult task.

The w...

Answered by Angus H. • Politics tutor

4305 Views

How should I approach a history essay titled discuss the factors contributing to a particular historical event/phenomenon?

At A-Level, a comprehensive range of factors contributing to an event/phenomenon will be very impressive. In tryign to achieve this, however, it is important not to omitt any of the crucial factors- ye...

Answered by Laura M. • History tutor

2348 Views