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Title: Lessons in physics
Description: Lessons in physics and nuclear transformations. And summaries of professors
Description: Lessons in physics and nuclear transformations. And summaries of professors
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ا
ا
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ت اة ا رة:
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53
: 17 Clر
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61
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1 H
: 1H
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و
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ا دة ا و :
آ وي
ا
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r
ا
3 ρ = 2
...
ن
وي 002
-IIا
O
957,99
ro = 1,2 × 10 −15 m
نا
61
8
71
8
81
8
و
ا
ا
:
1
3
r = ro A
m = 1,7 × 10 −27 Kg
:
ا
وا
M
m
...
m
=ρ
=
=
=
اة 3 ≈ 2
...
r 3 4π
...
A 4π
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:
2(
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نا
A
A
X →Z11 Y + Z22 P
ا
⇐ Z
ا ظ
⇐ A
ا ظ
ا
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ا
:
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ا
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ون e
0
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ل
ى
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ا
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ث
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...
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ة
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:
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اة
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ا اة
:
ر ا دة ا
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نا
: NOد ى ا
ا طا
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د
اة، و
ون دا
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ة
ن ا اة ا
:
ا
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ل اة
ى ، وه ا إ أن
...
t
:
ا
ا
0 =
...
τ
3
دا ىا
ن
...
t
τ
τ
−
N(t =τ ) = NOe = NOe−1 = 0,37NO
...
ىا
...
t1 / 2
2
t1 / 2 =
ln 2
λ
NO
2
و
،τ=
1
λ
λ=
ln 2
:
t1 / 2
ا
t = t1 / 2 :
و د ل دا
1
= e −λ
...
t1 / 2
λ
ا
ا
N = f (t )
t = n
...
nT
T
N(t) = NO e
1
−nln2
= N0 e
−ln2n
ln n
2
= NO e
= NO e
t = n
...
t
(1 ) N ( t ) = N O e
ا
ة
ه ا
t1 / 2 =
ا
= τ
...
t
أن :
) d ( N O e − λ
...
t
= −NO
ن: ) = −λN O
...
t = −λ
...
t
= NOe
t
ط
إذن
) a ( t ) = −λ
...
NO
: a(t) = ao
...
t
) 2(
:
ا
70Kg
م
5( ا ر
ت
(2 ) a ( t ) = −λ
...
e
ب( أ
را
ا
ا
− λ
...
1012Bq
طا
ا
ا
ا
س ط )أو آ
ر
...
ا
...
ln e = 1
:
و
f
−1
( f ( x) ) = x
6
؟
1
ln e = 1 :آ ن
= ( e1 1 ) أي
ln e 5 = 5 :آ ن
آ
:
و
آ ن
وذ
ا
وأ
ا
e
(ln 5 )
=5
Title: Lessons in physics
Description: Lessons in physics and nuclear transformations. And summaries of professors
Description: Lessons in physics and nuclear transformations. And summaries of professors