What is in volts the maximum value of the emf produced when the loop is spun at 1450 rev/min about an axis perpendicular to the magnetic field

frequency or wavelenth of em radiation in a vacuum

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

there are no components of a physical goal mentioned on the list of choices that you've provided.

this would be about 43%