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A high-density particle lies at the origin of a Cartesian plane. An electron orbits around the particle at X^2 + Y^2 = D. Take the particle to be massless and a point.

Let t be the amount of time

When t = 0, the electron lies at the x axis.

The value of D is given as follows: D = 106.9(0.69)^t -6.9 and D>0

Given that the electron orbits counter-clockwise at a rate of one second per successive phase, meaning 1 round per second,

a) i)find the value of when the electron strikes the particle

ii) if a Tangent were to be drawn at the incidence of the point at which the electron strikes the particle, find the gradient of that tangent of incidence.

__Any MT Hw__

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- Weekly Homework/Holiday Homework

__English:__
- Sit Practice(I don't think finish the essay)

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__Geography__
- Document on World map

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- Waves Workbook due tomorrow

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