Uy » Online olimpiada » Fizika olimpiada » 9-sinf Fizika olimpiada №5 Fizika olimpiada 9-sinf Fizika olimpiada №5 InfoMaster Yanvar 9, 2023 160 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 0 2 12345678910111213141516171819202122232425 9-sinf Fizika olimpiada №5 03.01.2023 yil oo.uzedu.uz Online olimpiada savollari! 1 / 25 Granata 45 m balandlikda tezligi 0 ga teng bo’lgan vaziyatda teng ikki qismga bo’linib portladi. Bunda birinchi qism 200 g massaga ega bo’lib, portlashdan so’ng yuqoriga tik ravishda ko’tarilib, 9 s dan (portlashdan so’ng) so’ng yerga tushdi. Granataning portlashdan oldingi ichki energiyasi to’liq mexanik energiyaga aylanadi deb olib, granataning dastlabki “ichki+mexanik” energiyasini (J)toping. ? = 10 ?/?^2 A) 2500 B) 50 C) 500 D) 600 2 / 25 Piyodaning tezligi υ₁=6km/h Undant₁=45 minut keyin yo’lga chiqqan velosipedchi piyodani t₂=9 minutda quvib yetishi uchun qanday υ2(km/h)tezlik bilan harakatlanishi kerak? A) 12 B) 24 C) 42 D) 18 3 / 25 Bir hil kuchlanishga mo’ljallangan 50 W, 100 W va 150 W nominal quvvatli lampalar mavjud. Qaysi lampaning qarshiligi eng kichik? A) 150 B) Barchasiniki bir hil C) 50 D) 100 4 / 25 Jism yer sirtidan tik yuqoriga 50 m/s tezlik bilan uloqtirildi. Shu jism 10 s da qanday yo’l (m) o’tishini toping. ? = 10 m/s² A) 25 B) 150 C) 250 D) 36 5 / 25 Elektrolizda buyumni nikellash t vaqt davom etib, buyum m massasi nikel bilan qoplandi. Elektroliz vaqtidagi tokning qiymatini toping. k – nikelning elektrokimyoviy ekvivalenti. A) m/kt B) mt/k C) mk/t D) mkt 6 / 25 A) C B) B C) D D) A 7 / 25 A) D B) C C) A D) B 8 / 25 A) A B) C C) B D) D 9 / 25 A) D B) B C) C D) A 10 / 25 A) A B) B C) D D) C 11 / 25 A) B B) C C) D D) A 12 / 25 A) B B) A C) C D) D 13 / 25 A) B B) C C) A D) D 14 / 25 A) B B) D C) A D) C 15 / 25 A) B B) A C) C D) D 16 / 25 A) D B) A C) B D) C 17 / 25 A) A B) B C) C D) D 18 / 25 A) C B) A C) B D) D 19 / 25 A) C B) B C) A D) D 20 / 25 A) D B) C C) B D) A 21 / 25 A) B B) C C) D D) A 22 / 25 A) B B) D C) A D) C 23 / 25 A) D B) A C) B D) C 24 / 25 A) C B) A C) B D) D 25 / 25 A) B B) D C) A D) C 0% Testni qayta ishga tushiring Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz