Saqlanish qonunlari (impuls, energiya, ish, quvvat)

1. Kinetik energiya formulasi qaysi?

1. A) E = mgh
2. B) E = mv²/2
3. C) E = mc²
4. D) E = kx²/2

Javobni ko'rish

To'g'ri javob: B) E = mv²/2

2. Potensial energiya (yer sirtida) qanday hisoblanadi?

1. A) E = mv²/2
2. B) E = mgh
3. C) E = Fs
4. D) E = ma

Javobni ko'rish

To'g'ri javob: B) E = mgh

3. Foydali ish koeffitsiyenti (FIK) har doim...

1. A) 100% dan katta
2. B) 100% dan kichik
3. C) 100% ga teng
4. D) 0% ga teng

Javobni ko'rish

To'g'ri javob: B) 100% dan kichik

4. 1 kVt soat qancha Joulga teng?

1. A) 3,600 J
2. B) 3,600,000 J
3. C) 1,000 J
4. D) 60,000 J

Javobni ko'rish

To'g'ri javob: B) 3,600,000 J

5. 5 m/s tezlik bilan sirpanishsiz harakatlanayotgan g‘ildirakni kinetik energiyasini anqilang (J)? G‘ildirak massasi 2 kg bo‘lib, hamma massa uning gardishida mujassamlashgan.

1. A) 25
2. B) 100
3. C) 12,5
4. D) 50

Javobni ko'rish

To'g'ri javob: D) 50