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A parabola with equation y^2=4ax for constant a is translated by the vector (2,3) to give the curve C. The curve C passes through the point (4,7), what is the value of a?

Invert the translation of (2,3) to get the parabola passing through the point (4,7)-(2,3)=(2,4). This is the same as saying that y=4 when x=2, substitute this into your equation y^2=4ax to get a=2.This will ...
GV
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What is phototropism?

Phototropism is the directional growth of a plant in response to a light stimulus.If it grows towards the light then it is positive (the most common type of phototropism) and if it grows away from the stimul...
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Answered by Sacha J. • Biology tutor
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Despite her world-wide fame and her wealth, Shakira has not forgotten the children of her native country.

A pesar de su fama mundial y su riqueza, Shakira no ha olvidado los niños de su país de origen.
MO
Answered by Morgaine O. • Spanish tutor
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What are the central beliefs of the Realist school of International Relations?

Realists (sometimes more specifically termed 'neorealists') believe that the international system is defined by anarchy, meaning the absence of a central authority. It is from this core belief that realist a...
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Answered by Robert P. • Politics tutor
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What is the difference between intramolecular and intermolecular forces for covalently bonded molecules?

Intramolecular forces are the forces that hold atoms together or arrange atoms in specific position relative to other atoms within one molecular entity . For example, water, whose chemical notation is H 2 O,...
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Answered by Thomas H. • Chemistry tutor
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