Physics Formulas Overview
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Questions and Answers

What is the formula for weight in physics?

w = m g

How do you calculate mass in terms of weight and gravitational field strength?

m = w / g

How do you calculate gravitational field strength in terms of mass and weight?

g = w / m

What is Newton's Second Law of Motion?

<p>F = m a</p> Signup and view all the answers

How do you calculate acceleration in terms of force and mass?

<p>a = F / m</p> Signup and view all the answers

How do you calculate mass in terms of force and acceleration?

<p>m = F / a</p> Signup and view all the answers

What is the formula for the speed of a wave?

<p>v = f λ</p> Signup and view all the answers

How do you calculate frequency in terms of speed and wavelength?

<p>f = v / λ</p> Signup and view all the answers

How do you calculate wavelength in terms of speed and frequency?

<p>λ = v / f</p> Signup and view all the answers

What is the formula for the area of a rectangle?

<p>A = l h</p> Signup and view all the answers

What is the formula for the volume of a rectangular prism?

<p>V = l h w</p> Signup and view all the answers

What is the formula for density?

<p>ρ = m / V</p> Signup and view all the answers

How do you calculate volume in terms of mass and density?

<p>V = m / ρ</p> Signup and view all the answers

How do you calculate mass in terms of density and volume?

<p>m = ρ V</p> Signup and view all the answers

What is the formula for current?

<p>I = Q / t</p> Signup and view all the answers

How do you calculate charge in terms of current and time?

<p>Q = I t</p> Signup and view all the answers

How do you calculate voltage in terms of charge and energy?

<p>V = E / Q</p> Signup and view all the answers

How do you calculate energy in terms of voltage and charge?

<p>E = V Q</p> Signup and view all the answers

What is the formula for average speed?

<p>average speed = distance / time</p> Signup and view all the answers

What is the formula for acceleration?

<p>acceleration = change of speed / time</p> Signup and view all the answers

What is the formula for uniform acceleration?

<p>a = (v - u) / t</p> Signup and view all the answers

How do you calculate final speed in terms of acceleration, time, and initial speed?

<p>v = at + u</p> Signup and view all the answers

What is the formula for pressure?

<p>pressure = force / area</p> Signup and view all the answers

How do you calculate force in terms of pressure and area?

<p>force = pressure x area</p> Signup and view all the answers

How do you calculate area in terms of pressure and force?

<p>area = force / pressure</p> Signup and view all the answers

What is the formula for resistance?

<p>R = V / I</p> Signup and view all the answers

How do you calculate voltage in terms of current and resistance?

<p>V = R I</p> Signup and view all the answers

What is the formula for power?

<p>power = work done / time taken</p> Signup and view all the answers

How do you calculate power in terms of voltage and current?

<p>P = I V</p> Signup and view all the answers

What is the formula for efficiency?

<p>efficiency = (useful output / total input) * 100%</p> Signup and view all the answers

What is the formula for refractive index?

<p>n = (speed of light in air) / (speed of light in medium)</p> Signup and view all the answers

What is the formula for work done?

<p>work done = force x distance in direction of force</p> Signup and view all the answers

What is the formula for potential energy?

<p>Ep = m g h</p> Signup and view all the answers

How do you calculate height in terms of potential energy, mass, and gravitational field strength?

<p>h = Ep / (m g)</p> Signup and view all the answers

What is the formula for kinetic energy?

<p>KE = 1/2 mv^2</p> Signup and view all the answers

What is Hooke's Law?

<p>F = k x</p> Signup and view all the answers

How do you calculate the spring constant in Hooke's Law?

<p>k = F / x</p> Signup and view all the answers

What is the formula for magnification?

<p>M = I / A</p> Signup and view all the answers

How do you calculate image size in terms of magnification and actual size?

<p>I = A M</p> Signup and view all the answers

How do you calculate actual size in terms of image size and magnification?

<p>A = I / M</p> Signup and view all the answers

How do you calculate volume in terms of concentration and moles?

<p>V = n / C</p> Signup and view all the answers

How do you calculate moles in terms of volume and concentration?

<p>n = C V</p> Signup and view all the answers

What is the formula for moles of a gas?

<p>n = V / 24</p> Signup and view all the answers

How do you calculate volume in terms of moles of a gas?

<p>V = n * 24</p> Signup and view all the answers

How do you calculate moles in terms of mass and relative molecular mass?

<p>n = m / Mr</p> Signup and view all the answers

How do you calculate mass in terms of moles and relative molecular mass?

<p>m = n * Mr</p> Signup and view all the answers

How do you calculate relative molecular mass in terms of mass and moles?

<p>Mr = m / n</p> Signup and view all the answers

How do you calculate relative molecular mass in terms of relative atomic mass?

<p>Mr = Ar</p> Signup and view all the answers

Study Notes

Physics Formulas

  • Weight (w): w = m * g
    • m: Mass
    • g: Gravitational field strength
  • Mass (m): m = w / g (from weight formula)
  • Gravitational field strength (g): g = w / m (from weight formula)
  • Force (F): F = m * a
    • a: Acceleration
  • Acceleration (a): a = F / m (from force formula)
  • Mass (m): m = F / a (from force formula)
  • Speed of wave (v): v = f * λ
    • f: Frequency
    • λ: Wavelength
  • Frequency (f): f = v / λ (from speed formula)
  • Wavelength (λ): λ = v / f (from speed formula)
  • Area (A): A = l * h
    • l: Length
    • h: Height
  • Volume (V): V = l * h * w
    • w: Width
  • Density (ρ): ρ = m / V
    • m: Mass
    • V: Volume
  • Volume (V): V = m / ρ (from density formula)
  • Mass (m): m = ρ * V (from density formula)
  • Current (I): I = Q / t
    • Q: Charge
    • t: Time
  • Charge (Q): Q = I * t (from current formula)
  • Voltage (V): V = E / Q
    • E: Energy
  • Energy (E): E = V * Q (from voltage formula)
  • Average Speed: average speed = distance / time
  • Velocity: velocity = displacement / time
  • Acceleration: acceleration = change in speed / time
  • Uniform Acceleration: a = (v - u) / t
    • v: Final speed
    • u: Initial speed
  • Final Speed (v): v = a * t + u (from uniform acceleration)
  • Moment: moment = force * perpendicular distance from fulcrum
  • Pressure (P): P = F / A
    • F: Force
    • A: Area
  • Force (F): F = P * A (from pressure formula)
  • Area (A): A = F / P (from pressure formula)
  • Resistance (R): R = V / I
    • V: Voltage
    • I: Current
  • Voltage (V): V = R * I (from resistance formula)
  • Power (P): P = work done / time taken
  • Power (P): P = I * V (from power definition)
  • Efficiency: efficiency = (useful output / total input) * 100%
  • Refractive Index (n): n = (speed of light in air) / (speed of light in medium)
  • Work Done: work done = force * distance in the direction of force
  • Potential Energy (Ep): Ep = m * g * h
    • h: Height
  • Height (h): h = Ep / (m * g) (from potential energy formula)
  • Kinetic Energy (KE): KE = 0.5 * m * v²
  • Force (Hooke's Law): F = k * x
    • k: Spring constant
    • x: Displacement
  • Spring constant (k): k = F / x (from Hooke's Law)

Chemistry Formulas

  • Concentration (C): C = n / V
    • n: Moles
    • V: Volume
  • Volume (V): V = n / C (from concentration formula)
  • Moles (n): n = C * V (from concentration formula)
  • Moles (n): n = V / 24 (for gases)
    • V: Volume
  • Volume (V): V = n * 24 (for gases)
  • Moles (n): n = m / Mr
    • m: Mass
    • Mr: Relative molecular mass
  • Mass (m): m = n * Mr (from moles formula)
  • Relative molecular mass (Mr): Mr = m / n (from moles formula)
  • Relative Molecular Mass (Mr): Mr = sum of relative atomic masses (Ar)

Biology Formulas

  • Magnification (M): M = Image size / Actual size
    • I: Image size
    • A: Actual size
  • Image size (I): I = M * A (from magnification formula)
  • Actual size (A): A = I / M (from magnification formula)

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Description

Test your understanding of key physics formulas including weight, mass, and force equations. This quiz covers essential relationships in mechanics and wave physics, providing a solid foundation for further studies in physics. Perfect for students looking to reinforce their knowledge of physics concepts.

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