Although they're different what relationship exists between facts and theories

if a theory can be verified by an experiment ten it's a good theory. if an expt contradicts a theory, theory is wrong.

at CERN in europe, a new fundamental particle was said to be found.

Professor Peter  Higgs had a theory predicting it.

called the "higgs boson" he got a nobel prze for the boson.

a partcle of light = a photom = a boson ...

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