Recent content by Smilecdl

The gravitational constant (g) depends on the square of the distance from the centre of the Earth.

Simple - watching it live on tv

I was under the imprression that the Eddington observations of 1919 actually proved nothing and the story is some kind of urban myth.

different coloured light has different wavelengths and therefore scatters by a different amount

Have a look at this website: http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/spiralarms.htm Formation of spiral arms is due, partly at least, to density waves and as such means they are transient phenomena over a galactic lifetime

You know T it is defined in your question...for the Earth T would be 24 hours so what is it for Venus? [Don't forget to change you units to seconds when doing the final calculation]

Think of the units that make up a Newton and make sure you use the same

To start with... Try working out the forces being exerted by the particles.