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d) wyznaczmy S
p=F/S /*S
pS=F /:p
S= F/p
e) wyznaczmy m
d=m/V /*V
m=d*V
f) wyznaczmy g
Q=mg /:m
g= Q/m
g) wyznaczmy P
V= Ph /:h
P= V/h
h) wyznaczmy U
P=UI /:I
U=P/I
i) wyznaczmy R
c=5R/2M /*2M
2Mc= 5R /:5
R= 2Mc/5
Zad 69
a) P=RI^2 /:I^2
R= P/I^2
b) P=U^2/R /*R
PR = U^2 /:P
R = U^2/P
c) F=mv^2/R /*R
FR= mv^2 /:v^2
m= FR/v^2
FR= mv^2 /:F
R= mv^2/F
d) E=mv^2/2 /*2
2E = mv^2 /:v^2
m= 2E/v^2