The International Bureau of Weights and Measures, BIPM, is the international organization, with headquarters outside Paris France, which maintains internationally agreed definitions for multiples and sub-multiples as prefixes, and the choice and definition of the standard unitsupon which the SI system is founded. Their web pages contain much of interest.
To measure, or measuring is the use of units to find a size of quantity
No. "Dimensionless" means there are NO units involved.
When you take the logarithm of a quantity, the units of the quantity are removed.
No, a quantity cannot have units and still be dimensionless. The dimensions of a quantity are determined by its units, so if a quantity has units, it has dimensions. Dimensionless quantities are those without any units.
Energy has units of joules.
No, the magnitude of a quantity does not change with a change in the system of units. The numerical value representing the quantity may change based on the system of units used, but the magnitude itself remains constant.
To calculate a 1.3 sales lift in quantity, you first need to determine the baseline sales quantity. Multiply this baseline quantity by 1.3 to find the new sales quantity after the lift. For example, if your baseline sales are 100 units, a 1.3 sales lift would result in 100 x 1.3 = 130 units sold. This indicates a 30% increase in sales compared to the original quantity.
Electric current is considered a fundamental quantity in physics. It is measured in units of amperes (A) and is one of the seven base SI units.
If the quantity demanded is 200 units and the quantity supplied is 250 units, there is a surplus in the market. This surplus of 50 units occurs because suppliers are offering more goods than consumers are willing to buy at the current price. To address this surplus, suppliers may need to lower prices to encourage more demand.
Density
If a quantity is "dimensionless", that means it has no units, and it's just a number.
Kilometers