Two objects are in all respects identical except for the fact that one was coated with a substance that is an excellent reflector of light while the other was coated with a substance that is a perfect absorber of light. you place both objects at the same distance from a powerful light source so they both receive the same amount of energy u from the light. the linear momentum these objects will receive is such that:

i need the answer to this too but idk it ; -;

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

it becomes positively charged by charging it

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