Recent content by pmh118

Haha change over its for the best :) thanks for all the help and the nice chat All the best for new year

Well tbh I by per bag :p but when I was just a lad I worked on a fruit stall selling them in lbs but then it all went metric so is kilo now :)

Ah sorry I am being dumb today, I was thinking a Newton was a Pascal, think maybe I should take a break from this study for a day ;p and nope not from the contiguous 48 as much as I would love to live there and study at MIT I am English just got back into studying I am a Carpenter by trade...

Ah thanks my conversions need a lot of work but now i see 1mm^2 = 1/(1000x1000) 1x10^-6 so my new equation is F = 140000000 x 0.000001 => 140 Pa Thx all for helping me

Ah yes I see that F= 140000000 x 0.001 so my answer with units should be F= 1.4x10^5 Pa ?

Got exams in January so just want to make sure I am correct the questions read exactly like this a) The sample of copper wire reached its elastic limit when the stress is 1.4x10^8 Pa and the strain is 0.035 Calculate the Young's Modulus for copper. My attempt is Y= Stress/Strain => Y=...

Ok guys thanks for all the rapid response mucha grazsia i will email my teach now and find out what he wants as it has to be handed in on monday (Arrgggh) I will update this thread with what his replie is for those that are interested. Thanks all PF members.

there is no gap but there is still a value it will be a negitive value my lecture wasnt happy with my explanation of there being 0 value he wants specific numbers

The difference between conductor, semiconductor and isolator is the size of the gap the smaller the better the conductivity conducters can overlap but unfortunately i need specific numbers of the energy gap value like Si =1.11eV but i need the value of a good conductor not a semiconductor.

sorry i moved it to correct forum i rushed in, in my panic