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Define the resistivity of a metal wire

ρ = (AR) / l where: ρ is the resistivity of the metal wire A is the cross sectional area of the specimen wire R is the electrical resistance of a uniform metal wire l is the length of metal wire through whic...
JE
Answered by Javier E. • Physics tutor
3940 Views

A 15kg cannonball and a 1kg football are dropped to the ground from a height of 10 metres. Calculate the speed of the cannonball and of the football just before they hit the ground (you may ignore air resistance).

Aim of question: demonstrate that the speed of a dropped object is independent of its mass, and depends only on the height it is dropped from. Solution: equate formulae for kinetic energy and for gravitation...
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Answered by Will R. • Physics tutor
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How would you write a "corpus" in French Baccalaureate?

You read the 3 or 4 text given to you a couple if not three times, you identify the things that these texts have in common and the things that distinguish them on a draft paper. Once you have done this, you ...
AL
Answered by Alice L. • French tutor
1944 Views

How do you conjugate the verb "passer" in subjunctive?

je passe tu passes il passe nous passions vous passiez ils passent
AL
Answered by Alice L. • French tutor
2962 Views

How do you site a text?

You can either quote a direct piece of the text in "" and say what passage of what book it is from. Or you can paraphrase what is being said in a passage of a text and specify what part of the text...
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Answered by Alice L. • English tutor
2272 Views