Key Physics Equations Overview

Questions and Answers

What is the formula for Wave Speed?

Wavelength + Frequency

Wave Frequency - Wavelength

Wavelength / Frequency

Frequency x Wavelength (correct)

What is the formula for Refractive Index?

Sin i / Sin r

What is the formula for Sin C?

1 / Refractive index

What is the formula for Efficiency?

Useful energy out / Total energy in Signup and view all the answers

What is the formula for Work Done?

Force x Distance moved Signup and view all the answers

What is the formula for Gravitational Potential Energy?

Mass x Gravitational field strength x Height Signup and view all the answers

What is the formula for Kinetic Energy?

1/2 x Mass x Speed squared Signup and view all the answers

What is the formula for Density?

Mass / Volume Signup and view all the answers

What is the formula for Pressure?

Force / Area Signup and view all the answers

What is the formula for Pressure Difference?

Height x Density x Gravitational field strength Signup and view all the answers

What is the formula for Momentum?

Mass x Velocity Signup and view all the answers

What is the ratio Input Voltage / Output Voltage?

Primary Turns / Secondary Turns Signup and view all the answers

What is the formula for Average Speed?

Distance travelled / Time taken Signup and view all the answers

What is the formula for Acceleration?

Change in Velocity / Time taken Signup and view all the answers

What is the formula for Force?

Mass x Acceleration Signup and view all the answers

What is the formula for Weight?

Mass x Gravitational field strength Signup and view all the answers

What is the formula for Moment?

Force x Perpendicular distance from pivot Signup and view all the answers

What is the formula for Power?

Current x Voltage Signup and view all the answers

What is the formula for Input Power?

Output Power Signup and view all the answers

What is the formula for Voltage?

Current x Resistance Signup and view all the answers

What is the formula for Charge?

Current x Time Signup and view all the answers

Study Notes

Key Physics Equations

Wave Speed: Calculated as the product of frequency and wavelength, crucial in understanding wave mechanics.
Refractive Index: The ratio of the sine of the angle of incidence to the sine of the angle of refraction; important in optics.
Sin C: Represents the inverse of the refractive index, providing another method to analyze light behavior in different mediums.
Efficiency: Defined as the ratio of useful energy output to total energy input, reflecting energy conversion effectiveness.
Work Done: The result of force applied over a distance, essential for calculating energy transfer in mechanical systems.
Gravitational Potential Energy: Determined by mass, height, and gravitational field strength, representing energy due to an object's position.
Kinetic Energy: Expressed as half the product of mass and the square of speed, indicating the energy of moving objects.
Density: The quotient of mass and volume, crucial for understanding material properties and buoyancy.
Pressure: Defined as force applied over an area, significant in fluid mechanics and surface interactions.
Pressure Difference: Calculated using height, density, and gravitational field strength, important in hydrostatics.
Momentum: The product of mass and velocity, reflecting an object's motion and resistance to change.
Input Voltage/Output Voltage: A ratio involving primary and secondary turns, essential in transformer operation and voltage conversion.
Average Speed: Determined by distance traveled divided by time taken, providing a measure of movement over intervals.
Acceleration: The change in velocity over time, indicating the rate of change of speed in objects.
Force: The product of mass and acceleration, a fundamental principle in dynamics describing motion changes.
Weight: Derived from mass multiplied by gravitational field strength, essential for calculating the force of gravity on an object.
Moment: The product of force and perpendicular distance from a pivot point, critical in torque and rotational dynamics.
Power: Defined as the product of current and voltage, representing the rate of energy transfer or conversion.
Input Power: Equal to output power in an ideal system, reflecting energy conservation principles.
Voltage: Calculated as current multiplied by resistance, a fundamental concept in electrical circuits.
Charge: Derived from current and time, related to the flow of electricity and fundamental in understanding circuits.

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Description

This quiz covers essential physics equations that are fundamental to understanding various concepts in mechanics and optics. Topics include wave speed, refractive index, efficiency, work done, and energy types such as gravitational potential and kinetic energy. Test your knowledge on these pivotal formulas and their applications in real-world scenarios.