A light bulb is an example of an electrical device, not a simple machine.
Work is calculated by multiplying force by distance.
Rubber is a good insulator, unlike aluminum, copper, or silver.
Copper is a good conductor of electricity, unlike rubber, glass, or wood.
Ohm is the unit electrical resistance, measured in ohms (Ω).
A pulley is a simple machine that consists of a wheel with a groove around its circumference and a rope or belt that moves in the groove. It is commonly used to lift heavy objects vertically by applying force downward.
The gear with 12 teeth will have to rotate twice to make the larger gear complete one rotation due to the difference in the number of teeth.
When a rubber band is stretched, it stores potential energy due to its stretched position.
The SI unit of force is the Newton (N).
In a second-class lever, the load is between the fulcrum and the effort, like in a wheelbarrow