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in a cathode ray tube, which components focus the beam, control brightness and accelerate electrons along the tube? A) heating filament B) electrodes in the electron gun C) deflection plates or coils D) Flourescent screen im sure its C but the answers i have been given says D am i...

has anyone got the catholic trial paper for this year?? if so , can ya'll please help me with questions 6 and 7 and 9 (i would type them out but there are complicated diagrams and dont have a scanner) i have the answers but the answers i got are different and cant work out why any help...

hey guys, i have a couple of questions i have done but the answers i got are not right but i dont know why. so...if anyone can do these and give the answer and why it is right, any help appreciated: Two satellites orbit the earth, satellite A at 300km from earth and satellite B at 35800km...

what are some of the factors that actually vary the brightness in periodic and non-periodic stars?? for extrinsic it is the eclipsing or hot/cold spots but every text book i look in only tells me examples of intrinsic stars, not why the brightness varies. any help appreciated

has anyone got worked solutions to any of the HSC papers for Extension 2 before 1999. the 1998 solutions are the ones i need most but if y'all have more could you give us a hand????

if anyone has any notes, study guides, essays etc on antony and cleopatra other than the ones already posted in resources, could they please give me a hand. i have absolutely no idea what i need to write about so any help appreciated

what parts of einsteins contributions do we need to know for "identify einsteins contribution to quantum theory and its relation to black body radiation"