HELPPP ME

It involves all three methods as the handle of the pot is conducting heat via touching the pan which gets it's heat from the burner that is radiating heat to the entire pan through waves of heat from the burner. There is then convection as the heat is being transferred as the liquids temperature changes.

This should be good if I remember it correctly which I hope so much I do.

It uses all three methods of heat transfer

Explanation:

It transfers heat by conduction because the fire is heating up the pot which then transfers heat to the water. It transfers heat by convection because the hot water on the botom is rising to the surface which is warming the rest of the water. It uses radiation because fire sends heat off by radiation.

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