Question

1 Joule of energy is to be converted into new system of units in which length is measured in 10 metre, mass in 10kg and time in 1 minute. The numerical value of 1joule in the new system is?

Answer 1

1 New Joule = 0,27 J

Explanation:

Joule is a derivatet unity of measure whose value is:
`1 J = 1 Kg xx 1 m^2 xx 1 s^(-2)`
so if you put the new units you have
`1 "New Joule" = 10 kg xx (10m)^2 xx (60 s)^-1=1000/3600 J =0,27 J`