How to convert one joule to erg by using kinetic energy formula? pls. help!!
Answers
Answer:
Explanation:
Joule is the unit for energy
Dimension Formula for Joule is [M¹L²T⁻²]
Let n1(joule)=n2(erg)
n1(M₁¹L₁²T₁⁻²]=n2[M₂¹L₂²T₂⁻²]
n2=n1(M₁¹L₁²T₁⁻²] /M₂¹L₂²T₂⁻²]
=n1x(M1/M2)¹x(L1/L2)²x(T1/T2)⁻²
=1x(1kg/gm)¹x(1m/1cm)²x(1s/1s)⁻²
=1x(1000g/gm)x(100cm/1cm)²x(1s/1s)⁻²
=10⁷
Therefore n1(joule)=n2(erg)
∴1 Joule=10⁷erg
Answer:
A joule (J) is a derived unit of energy, work, and amount of heat in the International System of Units SI. The joule is equal to the energy expended or work done in applying a force of one newton through a distance of one meter (1 newton meter or N·m). By another definition, the joule is equal to the energy required to pass an electric current of one ampere through a one ohm resistor for one second. Yet another definition states that the joule is equal to the work required to move an electric charge of one coulomb through an electric potential difference of one volt. In everyday life, one joule of energy is required to lift a small (102 g) tomato one meter straight up.
An erg (symbol erg) is a unit of energy and mechanical work in the centimeter-gram-second (CGS) system of units. An erg is the amount of work done by a force of one dyne when moving an object through a distance of one centimeter in the direction of the force. In the CGS base units, it is equal to one gram centimeter squared per second squared (g·cm²/s²). It is thus equal to 100 nanojoules (nJ) in SI units. An erg is a very small unit of energy. The impact energy of a small mosquito flying into a wall is equal to about 1 erg.