what is the si unit for power which equals joules per second
Watt The watt (symbol: W) is a derived unit of power in the International System of Units (SI) defined as 1 joule per second[1] and can be used to quantify the rate of energy transfer. Power has dimensions of    M L  2   T  − 3   {\displaystyle {\mathsf {ML}}^{2}{\mathsf {T}}^{-3}} .
Centimetre–gram–second system of units In measurements of purely mechanical systems (involving units of length, mass, force, energy, pressure, and so on), the differences between CGS and SI are straightforward and rather trivial; the unit-conversion factors are all powers of 10 as 100 cm = 1 m and 1000 g = 1 kg. For example, the CGS unit of force is the dyne which is defined as 1 g⋅cm/s2, so the SI unit of force, the newton (1 kg⋅m/s2), is equal to 100,000 dynes.