the answer is
c. tilt of the axis
thermal energy transfer through conduction, conduction involves the direct transfer of heat from one object to another object that is contacted.
thermal energy transfer through convection, convection involves the movement of warm particles.
thermal energy transfer through radiation, radiation involves the movement of electromagnetic waves.
the displacement of a body is the distance that exists between the starting point and the end point of the trajectory of an object.
it is represented by a vector and does not depend on the path made by the object, but on the final and initial point.
to calculate this vector 'd' we do the following procedure.
let and be the initial and final points of the trajectory of a body, so, the vector d is:
for the given problem we are told that the object starts the movement from the origin, which is the point (0,0) and ends at the point (0, -8)
then the vector is:
then the displacement has a magnitude of 8 meters