9 Odd | Zbirka Zadaci Po Fizika Za

На тело со маса 2 kg дејствува сила од 8 N, а силата на триење е 2 N. Најди го забрзувањето. ( F_net = 8 - 2 = 6 , \textN ) → ( a = 6 / 2 = 3 , \textm/s^2 )

Воз од мирување забрзува со ( 0.5 , \textm/s^2 ). Колкава брзина достигнува по 20 секунди? ( v = a \cdot t = 0.5 \cdot 20 = 10 , \textm/s ) (36 km/h)

Истите отпорници се врзани паралелно на 30 V. Најди: ( \frac1R_eq = \frac110 + \frac120 = \frac320 ) → ( R_eq = 20/3 \approx 6.67 , \Omega ) Струја низ секој: ( I_1=3A, I_2=1.5A ) → вкупно ( I=4.5A )

Тело паѓа слободно од висина 80 m. За кое време ќе падне на земја? (( g = 10 , \textm/s^2 )) ( t = \sqrt\frac2hg = \sqrt\frac16010 = \sqrt16 = 4 , \texts )

Што е алфа-распад? Напиши пример. ( ^238 92U \rightarrow ^234 90Th + ^4_2He )

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