Heyyyy!
I always take quite some time in converting integers to using powers. Do you get penalised for not using powers of 10 for something like 0.00000000251? Or do you have to write 2.51x10^-9.
Can I also get some help on the attached questions?
hey man,
So for the Michelson and Morley question, I remember that one as I did do the ruse trials and tbh it is confusing, like I am 100% certain the the aether is not a solid so I do pick D when I first did it online..., still doesn't make sense to me imo so I need someone to be able to explain that to me.. I also suspect that the answer provided is a typo..
So for the motors question...
This is more like an elimination of wrong answers... eliminate A as it is obviously wrong so eliminate that... and given where A and B is, both the force and the torque will be at maximum. therefore both F and the torque will reverse direction after rotating 90 degrees... so we would expect sudden change in force so D is eliminated... obviously the torque will not be at stationary hence the most correct should be B (hope my explanation make sense)..
For the last one, just plug in sin30 because it enters the magnetic field at an angle of 30, and using the rhsr, the force should go into page...
I hope I have helped you a bit..