In a new system of units called star units, 1 kg* = 10 kg , 1m* = 1km and 1s*= 1minute, what will be the value of 1J of energy in the new system?

Explanation

Joule is a unit of energy, `[M^1L^2 T^(-2)]`
`:. 1J = (1kg(1m)^2)/((1s)^2) = (((1)/(10)kg*)((1)/(1000)m*)^2)/((1)/(60)s*)^2`
`= 3.6xx10^(-4) kg* m*^2 s*^(-2)`
`= 3.6xx10^(-4)J*`