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Ye that was my reasoning as well

I don't know why but after I completed question 30 in that exam, I got a confidence boost??

Q20 I put A in the exam Here is my reasoning and my teacher's reasoning The ball is projected at angle to horizontal and with speed u ms^-1. So it undergoes projectile motion. However it was projected against a circular wall. So it will also undergo circular motion. If you look at the image...

A – you don't need brushes in ac induction motor. Thats why it is a frictionless motor

My teacher said that low 80s is band 6 cutoff

I put A – withdraw the rods. Its true that rods absorb the neutrons and the question states that the moderator increases the rate of fission. So putting the control the rods further into the reactor core would cause more neutrons to be absorbed while withdrawing them will cause fewer neutrons...

can someone briefly explain how particle accelerators are evidence for standard model?

I don't remember studying any of those methods in my class. Plus for all the trial and hsc exam papers I have done, I don't remember seeing any questions on those methods.

Since u lot are all pretty smart, anyone know how to solve Schrodinger's differential equation?