PHY Review

Front

What is a positive charge?

Back

A positive charge is a type of electric charge that repels other positive charges and attracts negative charges. It is carried by protons.

Front

What is buoyancy?

Back

Buoyancy is the upward force that acts on an object submerged in a fluid, allowing it to float or rise against the force of gravity.

Front

How is buoyant force calculated?

Back

Buoyant force = density of fluid x acceleration due to gravity x volume of displaced fluid.

Front

What instrument is used to measure air pressure?

Back

A barometer is used to measure air pressure.

Front

What condition allows an object to float in a fluid?

Back

An object will float if the buoyant force is greater than or equal to its weight.

Front

What is the relationship between buoyant force and weight?

Back

If the buoyant force equals the weight of the object, the object will float; if the buoyant force is less, the object will sink.

Front

What is the principle of Archimedes?

Back

The principle of Archimedes states that any object submerged in a fluid experiences a buoyant force equal to the weight of the fluid displaced.

Front

What happens to the buoyant force if the volume of displaced fluid increases?

Back

If the volume of displaced fluid increases, the buoyant force also increases.

Front

What is the role of density in buoyancy?

Back

Density determines whether an object will float or sink; objects with lower density than the fluid will float.

Front

What is a neutral charge?

Back

A neutral charge is when an object has an equal number of protons and electrons, resulting in no overall electric charge.