A metal disc radius 50cm rotates at 20 revolutions per seconds about it's axis which is parallel to a uniform magnetic field of 0.3T.
i What is the area swept out by any radius of the disc in one revolution?
ii. What is the flux Cut by the radius in one revolution?
iii. what is the induced EMF between the centre
of the disc and the rim?

if you answer my question i will answer yours

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y