physical quantities si units

Physical Quantity Name of the Unit Symbol Length meter m Mass kilogram kg Time second s Temperature kelvin K Electric current ampere A Luminous intensity candela cd Amount of substance mole mol Usually all small meas..

Abbreviations in Power of 10 (Used in SI units) - Prefixes are used for large and small quantities. The following table gives prefixes, their symbol and their values in powers of 10 used in SI units. Prefix Symbol Power of 10 deci d 10 - 1 deka da(D..

Prefixes are used for large and small quantities. The following table gives prefixes, their symbol and their values in powers of 10, as used in SI units. Prefix Symbol Power of 10 deci d 10 - 1 deka da(D) 10 1 centi c 10 - 2 ..

SI unit of heat is the joule (J) CGS unit of heat is erg and 1 joule = 10 7 erg The most commonly used unit of heat is the calorie. One calorie of heat is the quantity of heat required to raise the temperature of 1 g of water through 1 0 ..

International System of Units - In 1960, the Eleventh General Conference of Weights and Measures recommended an International System of Units (abbreviated as SI) based on the metric system of measurement. When the recommendation was accepted in 1968, it marked the firs..

One lunar month is the time in which the moon completes one revolution around the earth. Units of all other physical quantities can be derived from the basic units and hence are called "derived units". The following table shows the list of various ..

. Speed is scalar quantity. SI unit of speed is m/s. Instantaneous speed: It is the speed which the body possesses at a particular instant of time. The speed of a moving object can be determined by calculating the slope of the S-t graph. The S-t graph tells us about th..

In an athletic meet different participants start running at the same time and cover the same distance. The person who takes the minimum time to cover the distance will be judged as the winner. Suppose Ram and Krishna take 20 minutes and 10 minutes respectively to cover a distance of 1000 m, who is ..

International System of (SI) unit has been adopted for measurement by scientists all over the world. Three fundamental units needed in physics are those of lengths, mass and time. Units of all other physical quantities we..

. Can you tell where each of them would be after say 20 seconds? P and Q can move in any direction. To locate the exact position of P and Q we require their direction of motion als..