Physics

Contents

1. 01

   Motion

   গতি

   Describing how things move: displacement, velocity, acceleration and the equations that connect them.

   Begin 8

   • Scalars and vectors 2 q uncharted Uncharted
   • Velocity and acceleration 2 q uncharted Uncharted
   • Equations of motion 2 q uncharted Uncharted
   • Falling bodies 2 q uncharted Uncharted
2. 02

   Force

   বল

   Newton's laws, momentum and friction — why things start, stop and change direction.

   Begin 7

   • Newton's laws of motion 3 q uncharted Uncharted
   • Momentum 2 q uncharted Uncharted
   • Friction 2 q uncharted Uncharted
3. 03

   Work, power and energy

   কাজ, ক্ষমতা ও শক্তি

   How energy is transferred by forces, stored, and converted with more or less efficiency.

   Begin 5

   • Work and power 2 q uncharted Uncharted
   • Kinetic and potential energy 2 q uncharted Uncharted
   • Efficiency 1 q uncharted Uncharted
4. 04

   Waves and sound

   তরঙ্গ ও শব্দ

   How vibrations travel as waves, and how sound behaves as it moves, reflects and is heard.

   Begin 5

   • Properties of waves 2 q uncharted Uncharted
   • Sound and hearing 2 q uncharted Uncharted
   • Echo 1 q uncharted Uncharted
5. 05

   Refraction of light

   আলোর প্রতিসরণ

   Light bending as it crosses boundaries — lenses, critical angles and optical fibres.

   Begin 5

   • Laws of refraction 1 q uncharted Uncharted
   • Lenses 2 q uncharted Uncharted
   • Total internal reflection 2 q uncharted Uncharted
6. 06

   Current electricity

   চল বিদ্যুৎ

   Charge in motion: Ohm's law, combining resistors and paying for electrical energy.

   Begin 7

   • Ohm's law 3 q uncharted Uncharted
   • Combining resistors 2 q uncharted Uncharted
   • Electric power and energy 2 q uncharted Uncharted