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Physics
A Level

Give the definition simple harmonic motion and write down the defining equation for such motion stating the meaning of any symbols involved.

Simple harmonic motion is defined as a form of periodic motion in which a point or body oscillates in such a way that the acceleration of the point or body is directly proportional to its displacement fro...

Answered by Benjamin H. Physics tutor
16597 Views

What happens to the pressure inside a gas-filled ball when the temperature is increased? Explain your answer, stating the assumption made.

From definition of pressure have P=F/A (in reality for a ball we are talking about infinitesimal areas, but the general definition is sufficient at this level). Assume that the area of the surface under c...

Answered by James H. Physics tutor
1694 Views

How do I approach this question? Our teacher never explained it in class!

Any question in physics will boil down to a simple conservation law, even at the relatively difficult A level exams.

Basically, in order to successfully solve this question, you need to identify 3 ...

Answered by Franciszek P. Physics tutor
1494 Views

What is dimensional analysis and how is it used?

When one is faced with a problem requiring derivation of an equation, they might be asked to use dimensional analysis. This is a concept that involves analyzing the units of known ...

Answered by Christina I. Physics tutor
1537 Views

Steel has a density of 8030kg/m^3. Show that a steel ball with a diameter of 5cm weighs approximately 5N

Using Weight = mass*gravitational strength

Using: Mass = density * volume

Using Volume = (4/3)pir3

Radius = 2.5cm = 0.025m

Volume = (4/3)pi0.025

Answered by Sameh H. Physics tutor
10424 Views

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