Jawabanmu

2014-02-25T20:54:31+07:00
2014-02-25T21:04:50+07:00
Α = Δl/lo.Δt
α = 0,24 cm/200cm.100 c
α = 0,24m/2m.100 c
α = 0,24/200
α = 0,000012