Odpowiedź :
n=30
t=5 min = 300 s
R= 10 m
T=?
f=?
s=?
f=n/t
f=0,1 Hz
T=1/f
T=10 s
s=2*π*R*n
s=2*π*10*30
s=1885 m
[tex]dane:\\n = 30\\t = 5 \ min = 5\cdot60 \ s = 300 \ s\\r = 10 \ m\\szukane:\\T = ?\\f = ?\\s = ?\\\\Rozwiazanie\\\\Okres:\\T = \frac{t}{n}\\\\T = \frac{300 \ s}{30}\\\\T = 10 \ s\\\\Czestotliwosc:\\f = \frac{1}{T}\\\\f = \frac{1}{10 \ s} = 0,1 \ Hz\\\\Droga:\\s = n\cdot2\pi r\\\\s = 30\cdot2\cdot3,14\cdot10 \ m\\\\s = 1 \ 884 \ m[/tex]