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A ball with radius 10cm is filled with an ideal gas at pressure 2*(10)^5Pa and temperature 300K. The volume of the gas is changed at constant pressure so that the radius of the ball is reduced with 1cm. Find the amount of gas and the new temperature

In a question like this, you will be given that the molar gas constant is R = 8.31JK -1 mol -1 . However, committing this to memory will be helpful. We should use the ideal gas law: PV = nRT but the volume o...
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Answered by Ivan G. • Physics tutor
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How do I analyse a poem?

Firstly, select a quotation that either has imagery (e.g. a description of flowers), interesting punctuation (e.g. a pause in the middle of a line), symbolism (e.g. red could mean love or anger) or alliterat...
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What's the difference between movements along and shifts in the demand curve?

(the answer to this question would be assissted by the use of diagrams) Movements along the demand curve are caused by changes in price. A change in price will move to a new point on the demand curve. For ex...
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Answered by Sarah L. • Economics tutor
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How do I expand 2 sets of brackets to make a quadratic?

The FOIL method should be used to expand 2 sets of brackets. FOIL stands for: FIRST, OUTSIDE, INSIDE, LAST. Here is the foil method used without numbers; this creates a general formula. Expanding (x+a)(x+b)....
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Answered by Sarah L. • Maths tutor
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Explain the impacts of a fall in interest rates on the rate of GDP growth of a country.

Changing interest rates are an example of a demand side policy change, specifically monetary policy, this means that the Aggregate Demand (AD) curve will shift (see diagram) This can be demonstrated through ...
Answered by • Economics tutor
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