Resposta :
Epg = m.g.h
1) Epg = 1*9,8*20 = 196J
.
2) Epg = 4*1,6*1 = 6,4J
.
3) Epg = 30*10*10 = 3000J
.
4) Epg = 1,5*1,6*10 = 24J
.
5) Epg = 5*1,6*0,5 = 4J
.
By: ="WETE"=
1) Epg = 1*9,8*20 = 196J
.
2) Epg = 4*1,6*1 = 6,4J
.
3) Epg = 30*10*10 = 3000J
.
4) Epg = 1,5*1,6*10 = 24J
.
5) Epg = 5*1,6*0,5 = 4J
.
By: ="WETE"=