Bahodirov Xusniddin 922-22 7-maruza. Molekulyar fizika
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5-maruza.Energiya. Mexanik ish . Bahodirov Xusniddin 922-22
Bahodirov Xusniddin 922-22 7-maruza. Molekulyar fizika 1. Mexanik energiya necha xil boladi ? A) 3 xil ; B) 4 xil ; C) 2 xil ; D) 5 xil ; 2. 20 g massali po’lat sharcha 1 m balandlikdan po’lat taxtachaning ustiga tushib, undan 81 sm balandlikgacha sakraydi. Urilish vaqtida taxtachaning olgan kuch impulse topilsin. A) 0.17 J ; B) 5 J ; C) 2.1 J ; D) 3 J ; 3. Agar jismning kinetic energiyasi 1 J, ipulsi 1 kg*m/s bolsa , uning massasini toping ? A) 1 kg ; B) 0.5 kg ; C) 2 kg ; D) 5 kg ; 4. 3.32*10-19 J energiya bilan xarakatlanayotgan a zarrachaning tezligini toping . m = 6.64*10-27 A) 2000 ; B) 8000 ; C) 6000 ; D) 10000 ; 5. Uzunligi 5 sm bo’lgan prujina 40 N kuch tasirida 1 sm ga chozildi . Prujinani patensial energiyasini toping . A) 0.2 ; B) 0.4 ; C) 0.6 ; D) 1.2 ; 6. 2 kj kintik energiyaga ega 10 kg massali jismning tezligini toping . A) 0.2 ; B) 2 ; C) 20 ; D) 10 ; 7. Kinetic energiya jismni qanday energiyasi hisoblanadi ? A) harakat energiyasi ; B) holat energiyasi ; C) tinchlikdagi energiya ; D) TJY ; 8. 50 kg massali jism 10 m balandlikka 20 s vaqt bilan tekis kotarildi. Bajarilgan ish topilsin ? A) 15 kj ; B) 10 kj ; C) 25 kj ; D) 5 kj ; 9. 4 s da 2000 J ish bajara oladigan divagatelning quvvati qanchaga teng . A) 500 ; B) 400 ; C) 800 ; D) 300 ; 10. Quyidagi keltirilgan kuchlarning qaysi biri ish bajarmaydi . A) arximed kuchi ; B) ishqalanish kuchi ; C) larens kuchi ; D) amper kuchi ;
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