
Physics Formulas and Concepts
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Physics
12th Grade

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20 questions
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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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