Midterms | Formulas Flashcards

1
Q

Decay constant

A

λ = (ln(2) / T1/2)

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2
Q

λ equivalent

A

0.693

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3
Q

Half-life

A

T1/2= (ln(2) / λ)

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4
Q

Final activity

A

Af= A0 * 0.5^(T / T1/2)

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5
Q

number of half-life (n)

A

T / T1/2

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6
Q

REMAINING ACTIVITY equivalent

A

ORIGINAL
ACTIVITY (0.5^n)

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7
Q

Relationship of the types of hald-life

A

1 / Te = (1 / T1/2) + (1 / Tb)

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8
Q

Coulomb’s Law

A

F= k (Q1*Q2 / d^2)

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9
Q

Constant of proportionality

A

K= ( 8.99 * 10^9N ) * (m^2 / C^2)

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10
Q

Ohm’s Law

A

V= IR
R= V/I
I= V/R

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11
Q

Series Circuit Rules

A

o Rt= R1+ R2+ R3
o Vt= V1+ V2+ V3
o It= I1= I2= I3

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12
Q

Parallel circuit rules

A

o It = I1 + I2 + I3
o Vt = V1 = V2 = V3
o 1/Rt = 1/R1 + 1/R2 + 1/R3

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13
Q

Power

A

P= IV

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14
Q

Power loss

A

P= I^2*R

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15
Q

1m

A

10^(-3)

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16
Q

A

10^(-6)

17
Q

1k

A

10^3

18
Q

1G

A

10^9

19
Q

kg to lb

A

1kg = 2.2 lbs

20
Q

Transformer Law

A

(Vs / Vp) = (Ns / Np)

21
Q

Turns ratio

A

Ns / Np

22
Q

Change in voltage

A

Vs / Vp