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Describe the motion of a ball dropped into a theoretical hole drilled from the surface of the Earth, through its core to the other surface.

Make assumptions:No air resistanceEarth is perfectly sphericalEarth is of uniform densitySimple harmonic motion, the ball would oscillate between the position dropped and the corresponding position on the ot...
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Describe the structure of benzene with reference to delocalisation and an analysis of the Kekule structure.

Benzene is a circular molecule composed of 6 carbon atoms, each forming a single bond to two other carbons and one hydrogen. The fourth electron in the valence shell of each carbon is placed in a p orbital t...
SP
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Define market failure and give an example. Explain how government intervention may reduce market failure.

Market failure is when the price mechanism leads to an inefficient allocation of resources and a loss of economic welfare. One example of market failure is Public Goods. These are non-excludable and will the...
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Answered by Alex W. • Economics tutor
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Ich wohne mit meinen zwei Kindern in einem Doppelhaus. Mein Sohn geht ins Gymnasium, wo er gute Noten bekommt. Meine Tochter hat Fremdsprachen an der Universität studiert, weil sie im Ausland arbeiten möchte. Translate into English.

I live with my two children in a semi-detached house. My son goes to grammar school, where he gets good grades. My daughter studied foreign languages at university because she would like to work abroad.
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Answered by Daniel M. • German tutor
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Billy buys 4 adult tickets at £15 each and 2 child tickets at £10 each for show. A 10% booking fee is added to the ticket price. 3% is then added for paying by credit card. Find the total charge for these tickets when paying by card

4 x £15 = £60 2 x £10 = £20 This means the total price for tickets without added fees is £60 + £20 = £8010% booking fee --> £80 x 1.1 = £88 3% extra to pay with credit card --> £88 x 1.03 = £90.64 Answ...
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Answered by Daniel M. • Maths tutor
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