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2. 700=420.000/t
t=600 s :60 = 10 menit
3.p= 60.000x8:120=4.000 watt =4 kw
diketahui
t= 1 menit= 60 sekon
W= 6.600 Joule
ditanya
P=...?
jawab
P= W/t
P= 6.600/60
P= 110 watt
2)
diketahui
P= 700 watt
W= 420 kJ= 420.000 Joule
ditanya
t dalam menit
jawab
t= W/P
t= 420.000/700
t= 600 sekon= 10 menit
3)
diketahui
m= 60 ton= 60.000 kg
h= 8 m
t= 2 menit= 2 × 60= 120 sekon
ditanya
P=...?
jawab
W= Ep= m.g.h
= 60.000 × 10 × 8
= 4.800.000 Joule
P= W/t
P= 4.800.000/120
P= 40.000 watt