@yosh_ustozlar pisa 7 sinf fizika 3 chorak

7-sihf iii-chorak. 1. butun olam tortish qonuni ifodasini toping? a) f=gm1 m2 b) f=k׀q1׀ ׀ q2 ׀ /r2 c) f=gm1 m2 /r2 d) f=mv2/r 2. 60 n kuch jismga 0,8 m/s2 tezlanish beradi. qanday kuch bu jismga 2 m/s2 tezlanish beradi? a) 24 n b) 15 n c) 150 n d) 240 n 3. 5 meganyuton (mn) necha nyutonga teng. a) 5000 b) 5000 000 c) 500 d) 0,5 4. massasi 2 kg bo‘lgan jismga yerning ta’sir kuchini hisoblang. a) 2 n b) 9,8 n c) 19,6 n d) 98 n 5. avtomobil yo‘lning egrilik radiusi 40 m bo‘lgan qayrilish joyiga keldi. agar g‘ildiraklarning yo‘lga sirpanish ishqalanish koeffitsenti 0,25 ga teng bo‘lsa tezligini necha km/soat ga tushirib o‘tish kerak? a) …

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