A saw becomes warm when it is used to cut a log of wood. Give reason​

Explanation:

a part of the kinetic energy of the sun is converted into heat as it cuts the log of wood it is due to this heat that becomes worm .Thus, kinetic energy of such changes into heat

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

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.