Important formulas for science for Class 10:
Physics
1. Distance = Speed × Time (d = s × t)
2. Speed = Distance / Time (s = d / t)
3. Acceleration = Change in Velocity / Time (a = Δv / t)
4. Force = Mass × Acceleration (F = m × a)
5. Energy = Work Done (E = W)
6. Power = Work Done / Time (P = W / t)
7. Pressure = Force / Area (P = F / A)
8. Density = Mass / Volume (ρ = m / V)
9. Velocity = Displacement / Time (v = s / t)
10. Momentum = Mass × Velocity (p = m × v)
Chemistry
1. Atomic Mass = Number of Protons + Number of Neutrons (A = p + n)
2. Molecular Mass = Sum of Atomic Masses of Atoms in a Molecule (M = ΣA)
3. Number of Moles = Mass of Substance / Molar Mass (n = m / M)
4. Molarity = Number of Moles / Volume of Solution (M = n / V)
5. Percentage Composition = (Mass of Element / Mass of Compound) × 100 (P = (m / M) × 100)
Biology
1. Photosynthesis Equation: 6CO2 + 6H2O → C6H12O6 + 6O2
2. Respiration Equation: C6H12O6 + 6O2 → 6CO2 + 6H2O
3. Mitosis Formula: 2n → 2n (number of chromosomes remains the same)
4. Meiosis Formula: 2n → n (number of chromosomes is halved)
Important Constants
1. Speed of Light (c) = 3 × 10^8 m/s
2. Gravitational Constant (G) = 6.67 × 10^-11 N m^2 kg^-2
3. Avogadro's Number (NA) = 6.022 × 10^23 mol^-1
4. Gas Constant (R) = 8.314 J K^-1 mol^-1
These formulas and constants are essential for solving problems and understanding concepts in Class 10 science.
