This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
Here are the answers to your questions: 4. (b) List four methods of purifying water. i. Boiling ii. Filtration iii. Chlorination iv. Distillation (or Sedimentation, UV radiation) 4. (c) (i) Give the S.I unit of the following quantities: I. mass: kilogram (kg) II. temperature: Kelvin (K) III. weight: Newton (N) IV. power: Watt (W) 4. (c) (ii) State the relationship between energy and work done. Energy is the capacity to do work. Work done is the transfer of energy from one form to another or from one system to another. They are both measured in Joules (J). 5. (a) Define friction. Friction is a force that opposes motion or attempted motion between two surfaces in contact. 5. (b) Name any three components of air and their percentage composition. i. Nitrogen (N_2): Approximately 78\% ii. Oxygen (O_2): Approximately 21\% iii. Argon (Ar): Approximately 0.9\% (Other possible answers include Carbon Dioxide (CO_2): Approximately 0.04\%, Water Vapor: Variable) What's next?