a Porter raised a box of mass M kg on his load and goes from station to bus stand at a distance of 5 if the height of the Potter is N metre and acceleration due to gravity is g m/s square .find the amount of work done (a )against gravity (b) to carry the box from station to bus stand and (c) by the gravity​

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?