Think i got it! Yes! So its 2-1.5= 0.5v following current direction. But when do i know to use current or electron flow direction? Above for potential divider i was told to look at electron flow
Should i put the 3v battery to the right or left of X and should i go from + terminal to -terminal from X to Y like current flow or electron flow?
Smiles :D
Thank you all for your inputs! I realised its the direction after thinking for so long. And yea it should be ohm instead of v.
I have another question regarding potential could you guys help me? Answer is A but i dont understand the solution as there are 'conflicting battery direction' and i...
Why is the potential at X , denoted by V, not
V/8 = 4.8/(4.8+7.6) ? Why is numerator of resistance part 7.6 and not 4.8 by potential divider principle?
Considering the train to be of 80 thousand kg i think that should be it. I dont know what's that principle lol, but i thought your own school tutorials and notes will suffice?
Why wouldnt it seem right? Hmm. You have to use 19.444 m/s though. More accurate
Because its negative? Your acceleration should be negative btw. Unless you put deceleration
It has to be operating :P i think by just looking at resistance i got it - Highest power cuz least resistance when 2 resistors in parallel
Least power when 2 resistors in series
But that's assuming I and V are not outweighing Which complicates the matter more. Well furthermore V and I are...
you need W= mg for weight
and to calculate the frictional force.
Calculate force in the direction of the retarding of the train through trigonometry then add them up to find total force slowing the train down. I thnk you can do the next part now.
Formulas:W=mg
F=ma...
Using method one is faster: v2=u2+2as
Kinematics equation to find s after finding acceleration thru F=ma.
Tedious part is to find resultant force in the direction that retards the train first.
"It did prove the potential at P fell since (increase in I supplied by cell due to fall in R total) is LESS than (fall in R total due to series to parallel change) which meant the v fell since IR fell, but well if no values were given how do i tell? Hmph "
Aww sorry i still dont get how to...
How do i get this? Filled in the answers for easy reference. Dont see why unless i try subbing values again. Seems like a high order application question to me. Least dissipated power: Series circuit with 2 resistors(P=V2/R V larger with 2 resistors by V=I(2R) why :( least dissipated power?)...