what is the symbol of density in physics
Density The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is
Ä Ä (lower case ä) is a character that represents either a letter from several extended Latin alphabets, or the letter A with an umlaut mark or diaeresis.
Planck constant The Planck constant (denoted h, also called Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.
Rate equation k is the first order rate constant, which has units of 1/s or sâˆ’1.