*(c)(i) Examples of inclined planes in everyday life:* - Ramps for wheelchairs - Staircases - Slides in playgrounds *(ii) Calculations:* - *Work output* = II × distance = 100 N × 5 m = *500 J* - *Work input* = I × distance = 400 N × 10 m = *4000 J* - *Efficiency* = (Output/Input) × 100 = (500 / 4000) × 100 = *12.5%* *(d)(i)* Scientific principle: *Filtration* *(ii) Functions:* - *II (condenser tube)*: Cools vapor into liquid - *VI (filter)*: Traps solid particles from liquid *(iii) Materials:* - *III*: Distilled water or filtrate - *VII*: Filter paper or cotton wool *(iv)* Reversing water flow in A would prevent condensation as *water must enter from the bottom* for efficient cooling.