Misc Problems

Gauge pressure is the difference between the absolute pressure and the atmospheric pressure.

Absolute pressure is the total pressure at a point, including the atmospheric pressure.

The pressure measured using a barometer. It is equivalent to the weight of the air column above the point of measurement.

A device used to measure atmospheric pressure. It typically consists of a column of mercury that rises or falls with changes in atmospheric pressure.

The process of converting a pressure measurement from one unit to another. This often involves understanding the relationship between different pressure units.

It describes the force exerted by a fluid (liquid or gas) per unit area. It can be measured in various units, such as Pascal (Pa) or pounds per square inch (psi).

The weight of an object or system. It is calculated by multiplying the mass of the object by the acceleration due to gravity.

A device used to measure the pressure difference between two points. It consists of a U-shaped tube filled with a fluid, such as mercury or water.

The density of a substance is its mass per unit volume. It is often expressed in kg/m³.

The thermal energy contained within a system. It is related to the temperature of the system and its specific heat capacity.

The transfer of thermal energy from a hotter object to a colder object. It occurs until both objects reach thermal equilibrium.

The temperature at which a substance transitions from a solid to a liquid state.

The temperature at which a substance transitions from a liquid to a gaseous state.

The temperature scale in which 0°C corresponds to the freezing point of water and 100°C corresponds to the boiling point of water.

The temperature scale in which 0 K (absolute zero) corresponds to the theoretical point where all molecular motion ceases.

The temperature scale in which 0°F corresponds to the freezing point of a salt-water solution.

The temperature scale in which 0°R corresponds to absolute zero (-459.67°F).

A device designed to measure temperature. It uses the principle of thermal expansion or contraction.

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

A closed system is an isolated system that does not exchange any mass or energy with its surroundings.

The process of transferring thermal energy through the vibration of molecules in direct contact.

The process of transferring thermal energy through the movement of fluids (liquids or gases) due to differences in density.

The process of transferring thermal energy through electromagnetic radiation. It does not require a medium to travel.

A change in temperature of a system. It can be expressed in Celsius, Fahrenheit, Kelvin, or Rankine.

The ratio of the change in length of a material to its original length for a given temperature change.

A process where a system interacts with its surroundings through the exchange of heat and work.

The study of how energy is transferred and transformed in physical systems, particularly at the macroscopic level involving heat, work, temperature, and entropy.