Physics Principles

Science Laboratory Technology · Level 6  ·  9 Chapters

Compiled by: Kevin Rotich

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What Physics Principles covers

In this unit, you will be able to confidently apply key physics principles to solve real-world problems, from understanding forces and motion to mastering heat energy and thermodynamics. You’ll develop the skills to accurately measure, calculate, and analyze physical phenomena, and use optics and friction concepts to troubleshoot and improve equipment performance. By the end, you’ll be equipped to bring scientific insight and precision to your trade, making complex physics practical and useful in everyday technical tasks.

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Careers after Physics Principles

Understanding how physics works isn’t just about passing exams - it opens doors to many practical jobs across Kenya’s growing industries. Below are some real-world places where the skills you’re mastering will be put to work, whether you join an employer or start your own venture.

  • Manufacturing plants in Kiambu and Nakuru - you calculate static and dynamic forces on assembly lines, set up machines for linear and circular motion, and ensure equipment runs safely, earning a salary as a mechanical technician or as a freelance machine-setup consultant.
  • HVAC and refrigeration service firms in Nairobi’s industrial estates - you measure heat energy, apply thermodynamic equations to size cooling systems, and troubleshoot pressure-related faults, charging clients for installation, maintenance contracts, or emergency repairs.
  • Food-processing factories in Eldoret and Thika - you monitor heat transfer during pasteurisation, calculate pressure in steam boilers, and control friction in conveyor belts, earning wages as a process-control technician or offering specialised quality-assurance services to multiple plants.
  • Solar-panel and wind-turbine installation crews in Mombasa County and Turkana - you apply static force and pressure concepts to secure mounting structures, use friction calculations for bolt tightening, and employ electromagnetism to test generators, earning daily rates or project-based fees.
  • Automotive workshops in Westlands, Nairobi and Kisumu - you analyse linear and circular motion of engine components, diagnose friction losses in brakes, and use pressure principles for tyre inflation, earning a salary as a workshop mechanic or running your own garage.
  • University and county hospital laboratories in Nairobi and Nakuru - you perform precise heat-energy measurements, determine magnification of microscopes, and identify magnetic and electrostatic equipment, earning a stipend as a lab assistant or offering private calibration services.
  • Optical-instrument repair shops in Kilimani and Karen - you determine distances, sizes and magnification of lenses, adjust mirror-lens formulas, and service cameras or eyeglass lenses, charging customers for repairs, upgrades, or custom lens fabrication.
  • Construction sites for high-rise projects in Nairobi’s CBD - you calculate resultant forces on structural members, assess friction on scaffolding, and apply pressure concepts to concrete pumping, earning wages as a site engineer’s assistant or as an independent safety-audit consultant.
  • Geothermal power stations in Olkaria - you evaluate thermodynamic processes, compute heat-energy outputs, and monitor magnetic sensors in turbines, receiving a salary as a plant technician or providing specialised monitoring services to multiple energy firms.
  • Mining and quarry operations in Kitui and Kakamega - you use static and circular motion principles to operate crushers, apply friction and pressure calculations for safe material handling, and employ electromagnetism for metal detection, earning a wage as a plant operator or offering safety-assessment contracts.
  • Electronics repair kiosks in Nairobi’s CBD and Mombasa’s Old Town - you identify electrostatic devices, test magnetic properties of speakers and motors, and apply electromagnetism to troubleshoot chargers, earning daily repair fees or running a mobile repair service.

Mastering these physics principles means you can move confidently between well-paid technical roles, start your own specialised service, and become the go-to problem-solver that Kenya’s expanding industries rely on. Keep experimenting - the real world is your laboratory!

Chapters

What Physics Principles covers: 79 main topics in 9 chapters

1. Apply dynamics principles

  1. 1.1 Static forces
  2. 1.2 Newton's laws of motion
  3. 1.3 Equations of linear, free fall and horizontal and vertical
  4. 1.4 circular motion
  5. 1.5 Applications of uniform circular motion

2. Apply principles of thermodynamics

  1. 2.1 Heat energy
  2. 2.2 Heat capacity
  3. 2.3 Specific heat capacity
  4. 2.4 Latent heat
  5. 2.5 Latent heat of fusion
  6. 2.6 Latent heat of vaporization
  7. 2.7 Latent heat of sublimation
  8. 2.8 Determination of specific heat capacity using electrical and continuous flow method (solid and liquid)
  9. 2.9 Determination of specific latent heats of fusion, vaporization and sublimation
  10. 2.10 Adiabatic changes
  11. 2.11 Isothermal processes
  12. 2.12 Isobaric change

3. Apply principles of optics

  1. 3.1 Laws of refraction
  2. 3.2 Refractive index, critical angle and total internal reflection
  3. 3.3 Focal lengths, object distances, image distances and magnification calculation using lens formula
  4. 3.4 Image formation by lenses
  5. 3.5 Optical instruments

4. Apply friction principles

  1. 4.1 Definition of friction
  2. 4.2 Source of friction
  3. 4.3 Laws of friction
  4. 4.4 Coefficient of friction
  5. 4.5 Applications of friction
  6. 4.6 Methods of reducing friction

5. Apply pressure principles

  1. 5.1 Definition of pressure
  2. 5.2 Pressure in solids, liquids and gases
  3. 5.3 Transmission of pressure in liquids
  4. 5.4 Hydraulics
  5. 5.5 Measurements of pressure
  6. 5.6 Atmospheric pressure
  7. 5.7 Applications of pressure

6. Apply principles of electromagnetism

  1. 6.1 Magnetic flux patterns
  2. 6.2 Flux density
  3. 6.3 Electromagnets
  4. 6.4 Cork screw rule
  5. 6.5 Right hand Grip rule
  6. 6.6 Faraday's and Lenz's laws
  7. 6.7 Fleming's right hand rule and left-hand rule
  8. 6.8 Self-inductance
  9. 6.9 Mutual inductance
  10. 6.10 Induction due to current change in another circuit
  11. 6.11 Applications of electromagnetism

7. Apply electrostatic and electrical principles

  1. 7.1 Types of charges
  2. 7.2 Van de Graaff generator
  3. 7.3 Electroscope
  4. 7.4 Types of capacitors
  5. 7.5 Factors affecting capacitance of parallel plate capacitors
  6. 7.6 Applications of capacitors
  7. 7.7 Mains Electricity sources
  8. 7.8 Electrical quantities
  9. 7.9 Electrical Circuits
  10. 7.10 Electrical measuring instruments
  11. 7.11 Ohm's law
  12. 7.12 Generation of mains electricity
  13. 7.13 Electromagnetic induction

8. Apply semiconductor device principles

  1. 8.1 Energy band theory
  2. 8.2 Types of semi-conductors
  3. 8.3 Doping in semi-conductor diode
  4. 8.4 Forward and backward biasing of semi-conductor diodes
  5. 8.5 Application of semi-conductor diodes - rectification
  6. 8.6 Types of transistors
  7. 8.7 Connection of transistors
  8. 8.8 Transistor characteristics
  9. 8.9 Uses of transistors

9. Apply principles of nuclear physics

  1. 9.1 Production of X-rays
  2. 9.2 Types of X-rays
  3. 9.3 Application of X-rays
  4. 9.4 Commonly available radio-active elements
  5. 9.5 Types of radioactivity
  6. 9.6 Properties of radio-active materials
  7. 9.7 Types of radioactive radiations
  8. 9.8 Half-lives of radioactive elements
  9. 9.9 Uses of radioactivity
  10. 9.10 Hazards associated with radioactive material
  11. 9.11 Safety precautions on X-rays and radio-active elements

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Beyond the syllabus

Other units in Module V