cha 5 n.pdf
TRANSCRIPT
7/21/2019 cha 5 n.pdf
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(Pressure) = (Force)
(Area)
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40 000 N 5 m2
(SI) (N)
(m2)
1Nm-2) (1Pa)
Pa
1 Nm-2 = 1 Pa
N m-2= Pa
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= N
5 m2
= 8 000 N/m2 (8 000 Nm-2)
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I.
U
U
X
Y
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Y
U
X Y
U
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II.
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(Hydraulic Jack)
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A, B
B
A
L
B
B A
B A
U
L
A
B
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X
X
X
YY
U
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cm 760 mm / 0.76 m
/
cm
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Sphygmomanometer
(stethescope)
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C
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A
O
OA
AB
A1, A
2, A
A1, B1, A2 B2, A3 B3
AB, A1B
1, A
2B
2, A
3B
3
AB, A1B
1, A
2B
2, A
3B
3
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X
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•
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=
(J)
1m
1m 1J
1 N 2 m
2 J 5 N
2 m
10 J
(Energy)
(J)
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1N 1m
1J
1m
1J
potential energy
kinetic
energy
(Power)
W
1Js-1 = 1W
s J
J
200 Js-1
(J/s)
=
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turbines
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(LP Gas)
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(Non renewable energy sources)
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(CFL)
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i
ii
iii.
iv
(i)
(ii)
(i)
• • • •
(ii)
(iii)
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(i) J
(ii) KW
(iii)
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