Recent content by Tester_Boy

so how do you do that? =s

not homework but stumbled across it when i was doing homework, turns out id made a mistake earlyer and didnt have to do it but still the fact sits that i didnt know how to do it wether i needed to at the time or not... how do i intergrate e^(t(x^2)) i know intergrating is the oposit of...

ok, find time taken to travel the 20m horizontaly using trig to find horizontal velocity speed = distance/time ==> time = distance/speed i would take 1.5m as being height=0 so the pole top is 0.2m then just add your 1.5 back in at the end, so esentualy your working out the change in height :]...

i think the asumption that the projectile in question can be a particle will sufice, that is to say an object that has mass confined to a single point with no volume. I think the more pressing question is what chance is there of the particle passing straight through the roof of the tunnel thus...

what asumptions are you making? the mass of the egg is evenly distributed through out the egg? or are you seperating the yoke? is this egg spherical?

Homework Statement An electron approaches a potential barrier 10 eV high and 0.5 nm wide. If the electron has a 1% chance of tunnelling through, what must be its energy? Homework Equations don't know how to put equations in eg how do i get something like alpha and theta etc...