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how to integrate by parts

If you aren't lucky enough to be told in the question, the first thing we have to do is know when we should you integration by parts. Well, like most things in maths this should become second nature to you w...
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Answered by Tim M. • Maths tutor
5753 Views

Chinas One Child Policy: What, When, Why

WHAT -Based on reward and penalty approaches the One Child Policy encourages families to only have one child. -Those that have only one child receive priority for loans, materials, technical assistance and s...
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Answered by Amirah K. • Geography tutor
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What does the double slit experiment tell us about light?

Imagine an opaque barrier (no light can get through) with two parallel slits in it, onto which we shine a coherent light source (light of only one wavelength and in phase - a laser, for example, can produce ...
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Answered by Adam O. • Physics tutor
9119 Views

Show that the orbital period of a satellite is given by T^2=(4pi^2r^3)/(GM) where r is the orbital radius, G is the gravitational constant and M is the mass of the Earth. Then find the orbital radius of a geostationary satellite.

The first part of this question relies on remembering one key principle which is that for a satellite, or any body orbiting in a circle, centripetal force is provided by gravitational force. The rest is simp...
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Answered by Michael H. • Physics tutor
40126 Views

How do I form the negative in French?

To form a negative phrase in French there are always two parts, called particles, which most go around the verb. For example, 'ne...pas': the 'ne' must come before the verb and the 'pas' must come after the ...
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Answered by Elinor R. • French tutor
4441 Views