Harry is reading an online summary of the law of reflection. the site states that after light hits a mirror, the angle of reflection is the angle between the reflected ray and the normal, which is the surface of the mirror. which statement corrects an error on the site?

The normal is a line perpendicular to the surface of the mirror.

Explanation:

got it right on my test

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

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.