fizika 9-sinf olimpiada
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fizika 9-sinf olimpiada materiallari har bir topshiriq uchun 0.9 balldan baholanadi i variant 1.nyutonning birinchi qonuni ifodasini ko’rsating? a)a=const v=const b) a=0 v =const c) a=0 v=0 d) a=const v=0 2. bosim deb nimaga aytiladi? a) yuza birligiga ta’sir etuvchi kuchga b) yuzani kuchga ko’paytmasiga c) bajarilgan ishga d) yuzani kuchga nisbatiga 3. tekis harakatda tezlanish moduli......... a) o’zgarmas bo’ladi b) nolga teng bo’ladi c) o’zgaruvchan bo’ladi d) birday oshib boradi 4. aylana bo’ylab tekis harakat qilayotgan jism 10 minutda 3000 marta aylangan bo’lsa, aylanishlar davrini toping? a) 2s b) 20s c)0,2 s d)300s 5. sportchi aylana uzunligi 400 metr bo’lgan maydonni to’rt marta aylanib, harakat boshlagan joyiga kelib to’xtadi. sportchining ko’chishi va bosib o’tgan yo’lini toping...
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