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7-sinf uchun Aylanish effektlari

Authored by Azamat Yuldoshev

Physics

7th Grade

Used 3+ times

7-sinf uchun Aylanish effektlari
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Rasmda keltirilgan kuchlarning qaysilari jismni faqat ilgarilanma harakatga keltiradi? (O–massalar markazi.)

1, 4, 5

1, 3, 5

4, 5

1, 2

2, 3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

1 m uzunlikdagi bir jinsli sterjenning og‘irlik markazini 20 cm surish uchun uning bir uchidan necha cm uzunlikdagi qismini kesib olish kerak?

10

20

30

40

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Kuch 2 marta kamaytirilib, yelka 4 marta orttirilsa, kuch momenti qanday o‘zgaradi?

4 marta kamayadi.

2 marta kamayadi.

4 marta ortadi.

2 marta ortadi.

4.

MULTIPLE CHOICE QUESTION

5 mins • 2 pts

Media Image

Prujina uzunligi o‘zgarishining unga qo‘yilgan kuchga bog‘lanish grafigi rasmda keltirilgan. Prujinaning bikrligini aniqlang (N/m).

10

100

30

1000

5.

MULTIPLE CHOICE QUESTION

3 mins • 2 pts

Berilgan sim bo‘lagining bikrligi 𝑘 ga teng. Shu sim bo‘lagi yarmining bikrligi nimaga teng?

k

k/2

2k

Javob yo'q

6.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Agar yerda yotgan sterjenning bir uchidan 12 N kuch bilan ko‘tarish mumkin bo‘lsa, sterjenning massasi qanday (kg)?

0.6

1.2

2.4

4.8

7.

MULTIPLE CHOICE QUESTION

2 mins • 3 pts

800 g massali yuk ta’sirida prujina 2 cm cho‘zildi. Prujinaning bikrligi qanday (N/m)?

4

40

400

4000

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