Recent content by Supernovah

A beam with dimensions 10x10x50mm is loaded in it's middle with a load F and it's supported by two wedges at either end Given it's fracture toughness say 500MPa, what is the largest load that it can hold? I am assuming that the underside of the beam will go into Tension and to calculate...

Ah thanks gibz

Thx Gib_Z I know the process of that way. Is it not doable in cartesian form?

It's likely they'll ask a question like, find the \sqrt[3]{3 + 8i} though =/

Then is the \sqrt[3]{8i} = -2i? Also i figured out the logarithems one: \log_{10}(2\sqrt{10}) - \frac{1}{3}\log_{10}0.8 - \log_{10}\frac{10}{3} = \log_{10}2 + \log_{10}\sqrt{10} - \log_{10}\sqrt[3]{0.8} - \log_{10}10 + \log_{10}3 = \log_{10}\sqrt[3]{8} - \log_{10}\sqrt[3]{0.8} +...

the answer scheme says the answer is \log_{10}3 - \frac{1}{6}

Yeah but How do I raise the whole thing with there being a \frac{-1}{3} Multiplier there? Oh I see now, \sqrt[3]{0.8} = 0.2 AH! I mean, \sqrt[3]{0.8} = 0.92...

Hey there I'm studying for end of year exams and can't figure out how to do these 2 questions: 1) Express \log_{10}(2\sqrt{10}) - \frac{1}{3}\log_{10}0.8 - \log_{10}(\frac{10}{3}) in the form c + \log_{10}d 2) Simply finding the cube root of a complex number in polar/cartesian form ie...

yes... Yeah energy density i guess is what I am referring to, though that isn't really a commonly used term i guess... what i mean is if the universe became infinitly large, then the density of energy would be infinitly small, and such the quantity of space with no energy would vastly increase...

I bet right now, someone with an expansive knowledge is thinking 'haha this newbie has no idea' and that's the truth, I am just thinking - Put some Theoratical law into this which makes my idea impossible

crap... I need to read some stuff then i might change what I am confused about - BTW I am no physicist or anything, just a student so there are most definately a lot of things i am clueless of that will make my suggestion ludacrous or even moronic to the poeple of this forum =D

oh and a further thought, on the same train of thought... Does this mean that there is a maximum possible age to the universe based on the ratio of energy loss from the bigbang - till now - till the energy the universe (as a mass entity) contains is = to 0?. Does this mean the universe will...

-Bearing in mind i ask this based on a theory of the big bang. Could all existent matter have been packed into a single atom of infinite energy levels, meaning as the universe 'expands' it is actually losing energy and will eventually be infinitly large and contain no energy?