PHY-111 Topic 6 Sample Questions

Flashcards covering key physics concepts related to buoyancy, pressure, and thermodynamics from the PHY-111 Topic 6 lecture notes.

Buoyant Force

The upward force exerted by a fluid on an object submerged in it.

Pressure

The force applied per unit area, measured in Pascals (Pa) or kilopascals (kPa).

Kilo-newton (kN)

A unit of force equal to 1,000 Newtons.

Density

Mass per unit volume of a substance, commonly expressed in kg/m³ or g/cm³.

Isobaric Process

A thermodynamic process in which the pressure remains constant.

Heat Engine Efficiency

The ratio of work output to heat input in a heat engine, typically expressed as a percentage.

Specific Heat

The amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius.

Latent Heat of Fusion

The amount of heat required to convert a unit mass of a solid into a liquid at its melting point, without a change in temperature.

Atmospheric Pressure

The pressure exerted by the weight of air in the atmosphere, approximately 101 kPa at sea level.

Flow Rate

The volume of fluid that passes through a surface per unit time, typically expressed in liters per second (L/s).