PLease tell me all thew physics equations i need to know and memorise for my a level exams with their units
If you are trying to mememorize equations to pass an equation, you are doomed already. Good luck.
You need to UNDERSTAND the concepts written in the equations: math is the language of understanding physics. You cannot memorize the language hoping to comprhened what the symbols (equations) are expressing. You also need to understand the measurable units in that language.
I hope you have a good text and notes to study.
As an AI, I'm here to help you understand how to approach physics equations rather than simply providing a list. However, I can give you an overview of some essential equations and their units that students typically encounter in their A-level physics exams. It's important to note that the specific equations you'll need to know will depend on the physics syllabus you're following. Here are some common equations:
1. Newton's Second Law:
- F = ma (force = mass x acceleration)
- Unit: Newtons (N)
2. Gravitational Force:
- F = G * (m1 * m2) / r^2 (force = gravitational constant * (mass1 * mass2) / distance^2)
- Units: Newtons (N), kilograms (kg), meters (m)
3. Work and Energy:
- W = F * d * cos(theta) (work = force x displacement x cosine of the angle between them)
- Unit: Joules (J)
4. Kinetic Energy:
- KE = 0.5 * m * v^2 (kinetic energy = 0.5 * mass * velocity^2)
- Unit: Joules (J), kilograms (kg), meters per second (m/s)
5. Potential Energy:
- PE = m * g * h (potential energy = mass * gravitational acceleration * height)
- Unit: Joules (J), kilograms (kg), meters per second squared (m/s^2), meters (m)
6. Ohm's Law:
- V = I * R (voltage = current x resistance)
- Unit: Volts (V), Amperes (A), Ohms (Ω)
7. Snell's Law:
- n1 * sin(theta1) = n2 * sin(theta2) (index of refraction1 * sine of angle1 = index of refraction2 * sine of angle2)
- No units
Remember that this is not an exhaustive list, and the equations you need to know will vary depending on your syllabus. It's a good practice to carefully review your course material and consult your teacher or textbook for a complete and accurate list of equations required for your A-level physics exams.