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- Reaction forces
- Kinematics
- Circular Motion
- Projectile motion
- Applied Force
- Gravity and freefall
- Work, Energy and Power
- Turning effects
- Distance and Displacement
- Newton's Laws of Motion
- Speed and Velocity
- Air Resistance and Terminal Velocity
- Law of Gravitation
- Force
- Centripetal and Centrifugal Forces
- Momentum
- Acceleration

- Waves and Oscillations
- Astrophysics and Relativity
- Mechanics
- Biology
- Nuclear and Particle Physics
- Electromagnetism
- Energy
- Units and Measures
- Light and Optics

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Mathematics is the most important tool of science. The quest to understand the world and the universe using mathematics is as old as civilisation, and has led to the science and technology of today. Learn about the techniques and history of mathematics on ScienceLibrary.info.

Question: A girl counts the number of matches in each box of a new packet of 12 boxes (her TV is being repaired). The manufacturer claims that the boxes should contain 50 matches each, but she finds this claim has an accuracy of ± 4%. What is the lower bound of the number of matches in total?

Go to the article about: Number Realms

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