Electromagnetism and Mechanics

total potential energy provided by a power source

This power outlet delivers 120V, but your device needs 240V.

an electrical component designed to limit or control the flow of electric current in a circuit, typically by providing resistance

In electronic circuits, resistors are commonly used to regulate the flow of current and protect sensitive components.

the complete circle through which an electric current flows, typically consists of the source of electric energy

The electrical circuit is designed to power the light bulb when the switch is turned on.

a conductor made with semiconducting material

a phenomenon where certain materials conduct electricity without resistance when cooled to extremely low temperatures

Scientists are researching new materials to achieve superconductivity at higher temperatures.

to suddenly and intensely excite someone

The rock concert electrified the crowd with its energy.

a conductor through which electricity travels to or from an object, such as batteries

a form of electricity generated by friction between two materials, resulting in an imbalance of electric charges on their surfaces

When you shuffle your feet on a carpet, static electricity builds up, causing a shock when you touch a doorknob.

(of a battery or device) capable of being supplied with electrical power again

The flashlight runs on rechargeable batteries.

a machine that produces electricity by converting mechanical energy into electrical energy

The hydroelectric generator harnesses the power of flowing water to produce electricity for nearby communities.

a positively charged electrode in an electrical device where oxidation occurs, resulting in the release of electrons

The anode of the X-ray tube emits electrons when heated, producing X-rays for medical imaging.

a negatively charged electrode within an electrical device, from which electrons flow out into the external circuit

The cathode of the battery supplies electrons to the external circuit when the device is in use.

a device that converts the energy of the sun into electricity

A solar cell, also known as a photovoltaic cell, converts sunlight directly into electricity.

the amount of solar energy received per unit area on Earth's surface

energy transmitted through space or matter in the form of waves or particles

The sun emits radiation that warms the Earth.

related to the technology that turns sunlight directly into electricity

Solar panels use photovoltaic cells to convert sunlight into electricity.

referring to the combined interaction of electric and magnetic fields, often associated with waves or radiation

Light is an electromagnetic wave that can travel through a vacuum.

an invisible area around a magnetic object where magnetic forces can attract or repel other objects

The Earth has a magnetic field that helps guide the navigation of compasses.

a long rigid bar that is put under a heavy object in order to move it

He used a lever to lift the heavy rock from the ground.

a point or support on which a lever pivots or rotates in order to lift or move objects

The plank acted as a fulcrum for the seesaw, allowing the children to take turns going up and down.

the rapid back-and-forth movement of an object

The vibration of the phone on the table alerted her to an incoming call.

a rotational force measured in newton-meters or foot-pounds

The wrench applied torque to loosen the stubborn nut on the bolt.

a measure of a spring's stiffness, indicating how much force is needed to stretch or compress it

a mass used to provide balance to another mass

The elevator uses a counterweight to help lift and lower the car smoothly.

having a speed greater than that of sound

The fighter jet can travel at supersonic speeds, making it highly agile in aerial combat.

the rate at which a vehicle increases its speed over a specific distance or time

The driver's car showed impressive acceleration coming out of the corner.

the constant speed reached by a falling object when the drag force equals the gravitational force pulling it downward, resulting in no further acceleration

Skydivers reach terminal velocity during their freefall before deploying their parachutes.

the aggregation of a country's military aircraft

a branch of science and engineering that deals with the mechanical properties of liquids, particularly their behavior in confined spaces and under pressure

Many agricultural implements, like tractors and plows, use hydraulics for performing various tasks on the field.

an area of technology that is concerned with the study or use of robots

(physics) the universal force of attraction between any pair of objects with mass

Gravity is what keeps the planets in orbit around the Sun and the Moon in orbit around the Earth.