The Student Room Group
Reply 1
[br][br]Intensity=Power/4nr2[br][br][br][br]Intensity = Power / 4nr² [br][br]

Plug in the numbers. That formula is given in the data booklet for Edexcel.
Reply 2
djpailo
[br][br]Intensity=Power/4nr2[br][br][br][br]Intensity = Power / 4nr² [br][br]

Plug in the numbers. That formula is given in the data booklet for Edexcel.

nice one.

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