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Formulas

Physics

Showing formulas of Physics

Showing 24 of 258 formulas Page 10 of 11

Pressure

Physics → Mechanics → Gravitation → Thrust and Pressure
$$P = \frac{F}{A}$$
Force acting per unit area.
📖 Physics 📚 Gravitation

Frequency (Wave)

Physics → Waves → Sound → Wave Properties
$$f = \frac{1}{T}$$
Number of oscillations per unit time.
📖 Physics 📚 Sound

Magnification (Lens)

Physics → Optics → Light - Reflection and Refraction → Spherical Lenses
$$m = \frac{h'}{h} = \frac{v}{u}$$
Linear magnification produced by a lens.
📖 Physics 📚 Light - Reflection and Refraction

First Equation of Motion

Physics → Mechanics → Motion → Kinematics
$$v = u + at$$
Relates final velocity, initial velocity, acceleration, and time.
📖 Physics 📚 Motion

Second Equation of Motion

Physics → Mechanics → Motion → Kinematics
$$s = ut + \frac{1}{2}at^2$$
Relates displacement, initial velocity, time, and acceleration.
📖 Physics 📚 Motion

Third Equation of Motion

Physics → Mechanics → Motion → Kinematics
$$v^2 = u^2 + 2as$$
Relates final velocity, initial velocity, acceleration, and displacement.
📖 Physics 📚 Motion

Universal Law of Gravitation

Physics → Mechanics → Gravitation → Gravity
$$F = G \frac{m_1 m_2}{r^2}$$
Force of attraction between two masses.
📖 Physics 📚 Gravitation

Buoyant Force (Archimedes)

Physics → Mechanics → Gravitation → Fluids
$$F_b = V \rho g$$
Upward force on an object immersed in a fluid.
📖 Physics 📚 Gravitation

Mechanical Power

Physics → Mechanics → Work and Energy → Power
$$P = \frac{W}{t}$$
Rate of doing work.
📖 Physics 📚 Work and Energy

Snell's Law (Simplified)

Physics → Optics → Light - Reflection and Refraction → Refraction
$$n = \frac{\sin i}{\sin r}$$
The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for a given pair of media.
📖 Physics 📚 Light - Reflection and Refraction

Relative Density

Physics → Mechanics → Gravitation → Properties of Matter
$$R.D. = \frac{\rho_{\text{substance}}}{\rho_{\text{water}}}$$
Ratio of density of a substance to the density of water.
📖 Physics 📚 Gravitation

Radius of Curvature

Physics → Optics → Light - Reflection and Refraction → Spherical Mirrors
$$R = 2f$$
Radius of curvature is twice the focal length for spherical mirrors.
📖 Physics 📚 Light - Reflection and Refraction

Average Speed

Physics → Mechanics → Motion → Kinematics
$$v_{avg} = \frac{\text{Total Distance}}{\text{Total Time}}$$
Total distance traveled divided by the total time taken.
📖 Physics 📚 Motion

Force in Magnetic Field

Physics → Magnetism → Magnetic Effects of Electric Current → Magnetic Force
$$F = BIl \sin \theta$$
Force on a current-carrying conductor in a magnetic field.
📖 Physics 📚 Magnetic Effects of Electric Current

Commercial Unit of Energy

Physics → Electricity → Electricity → Energy
$$1 kWh = 3.6 \times 10^6 J$$
Conversion between kilowatt-hour and Joules.
📖 Physics 📚 Electricity

Heat Capacity (Basic)

Physics → Thermodynamics → Sources of Energy → Thermal Energy
$$Q = mc\Delta T$$
Heat energy required to change temperature of a mass.
📖 Physics 📚 Sources of Energy

Angular Frequency (Wave)

Physics → Waves → Sound → Oscillations
$$\omega = 2\pi f$$
Rate of change of angular displacement.
📖 Physics 📚 Sound

Echo Distance

Physics → Waves → Sound → Reflection of Sound
$$d = \frac{v \times t}{2}$$
Calculating distance of an obstacle based on the time sound takes to return.
📖 Physics 📚 Sound

Transformer Ratio

Physics → Electricity → Magnetic Effects of Electric Current → Induction
$$\frac{V_s}{V_p} = \frac{N_s}{N_p}$$
Relationship between voltages and number of turns in a transformer.
📖 Physics 📚 Magnetic Effects of Electric Current

Efficiency

Physics → General → Sources of Energy → Energy Transformation
$$\eta = \frac{\text{Output Energy}}{\text{Input Energy}} \times 100$$
Ratio of useful work to total energy input.
📖 Physics 📚 Sources of Energy

Coulomb's Law (Intro)

Physics → Electricity → Electricity → Electrostatics
$$F = k \frac{q_1 q_2}{r^2}$$
The electrical force between two charges.
📖 Physics 📚 Electricity

Current in Series

Physics → Electricity → Electricity → Circuit Analysis
$$I_{total} = I_1 = I_2 = I_3$$
In a series circuit, current remains the same at all points.
📖 Physics 📚 Electricity

Voltage in Parallel

Physics → Electricity → Electricity → Circuit Analysis
$$V_{total} = V_1 = V_2 = V_3$$
In a parallel circuit, the potential difference across each branch is the same.
📖 Physics 📚 Electricity

Refractive Index (Apparent Depth)

Physics → Optics → Light - Reflection and Refraction → Refraction
$$n = \frac{\text{Real Depth}}{\text{Apparent Depth}}$$
Why an object underwater appears shallower than it is.
📖 Physics 📚 Light - Reflection and Refraction
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