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Physics
A Level

Show Maxwell's equations in free space satisfy the wave equation

Maxwell's equations in free space:

∇ . E 

Answered by Dojcin D. Physics tutor
6539 Views

Derive I = nAVe

Over 1 second, electrons with drift velocity V travel through a wire of  cross sectional area A. Distance Vt (t = 1) multiplied by area A gives a volume AV. This volume multiplied by the electron dens...

Answered by Dojcin D. Physics tutor
59946 Views

What is the difference between accuracy and precision?

When we make measurements while doing an experiment, the values we measure always have an uncertainty. We assign an uncertainty based on the equipment we are using and the way we make...

Answered by Miranda J. Physics tutor
13801 Views

Convection, conduction and radiation in space

On Earth we notice convection through breathing, conduction through heat and radiation through sunlight. But do we notice these in space? And if not, then why? Let’s make a...

Answered by Daniel S. Physics tutor
11347 Views

What is the standard model?

The standard model is a 'catalogue' of subatomic particles (the smallest building blocks of everything in the universe). It categorises these subatomic particles based on their properties and has pred...

Answered by Scott L. Physics tutor
2990 Views

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