Fizika 6-sinf

Test raqami	1	2	3	4	5	6	7	8	9
10
Javob
Ball

Nazorat ishining bali – bahosi:

3- NAZORAT ISHI

Mavzu: Mexanik hodisalar

Nazorat shakli: Yozma ish

I variant

1. 
   Massasi 48 kg, oyoq kiyimi ostgi qismining yuzi 320 sm² bo‘lgan bolaning yerga ko‘rsatadigan bosimi qanday?
   
2. 
   Asosining yuzi 1,5 m², hajmi 6 m³ marmar ustunning yerga ko‘rsatadigan bosimi qanday? (=2.7 g/sm³)?
   
3. 
   O‘lchamlari 4,5x1, 5x0,2 m bo‘lgan temir beton plita butunlay suvga botirilgan. Plitaga ta’sir qiluvchi Arximed kuchi qanday? p_suv=1000 kg/m³.
   

II variant

1. Massasi 50 kg bo‘lgan o‘quvchining har bir oyoq kiyimi tagining yuzi 160 sm². O‘quvchining yerga ko‘rsatadigan bosimini toping.

2. Og‘irligi 32 N ga teng bo‘lgan g‘isht o‘zi turgan sirtga 800 Pa bosim bermoqda. Shu g‘ishtning yuzi qancha?

3. O‘lchamlari 3,5x1,5x0,2 m bo‘lgan temir beton plita butunlay suvga botirilgan. Plitaga ta’sir qiluvchi Arximed kuchi qanday? p_suv=1000 kg/m³

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