Questions

A rotameter is a flow meter that measures volumetric flow of liquids and gases.

Rust is formed from iron and oxygen.

Lord Kelvin, working in Scotland, developed the Kelvin scale in 1848. His scale uses molecular energy to define the extremes of hot and cold. Absolute zero, or 0 K, corresponds to the point at which molecular energy is at a minimum. The Kelvin scale is preferred in scientific work, although the Celsius scale is also commonly used. Temperatures measured on the Kelvin scale are reported simply as K, not °K.

T (in °C) + 273.15 = T (in K)

T (in K) − 273.15 = T (in °C)

Macroeconomics is the study of overall aggregate changes, behavior and performance of the economy of the country i.e, unemployment, GDP, inflation, etc...