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Physics Formulas and Concepts

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Physics

12th Grade

Physics Formulas and Concepts
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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Bước sóng de Broglie

λ = h / (m v)

λ = m v / h

λ = h v / m

λ = m / (h v)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Suất điện động cảm ứng

e = -dΦ/dt = ωBSsin(ωt)

e = dΦ/dt = ωBScos(ωt)

e = -ωBScos(ωt)

e = dΦ/dt = -ωBSsin(ωt)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tổng n số hạng đầu của CSC

S_n = n(u_1 + u_n) / 2

S_n = n(u_1 - u_n) / 2

S_n = (u_1 + u_n) / n

S_n = n^2(u_1 + u_n)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cảm ứng từ dây dẫn thẳng dài

B = 2 × 10−7 I / r

B = 4 × 10−7 I / r

B = 2 × 10−6 I / r

B = 1 × 10−7 I / r

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cường độ dòng điện

I = n e v S

I = n e v + S

I = n e / v S

I = n + e v S

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phương trình dao động điều hòa

x = A cos(ωt + φ)

x = A sin(ωt + φ)

x = A cos(φ)

x = A sin(ωt)

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Điều kiện sóng dừng 2 đầu cố định

L = k λ / 2

L = k λ

L = 2k λ

L = k λ / 4

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