Chapter 01
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A Heat
1
Chapter 1 Temperature, Heat and Internal Energy
Temperature, Heat and Internal Energy
Practice 1.1 (p. 11)
10
T
°
1
T °
°
2
− −
3 4 5
11
° °
° (a) (b)
12
(c)
T=
° ° x− −
° 8
= °
x°
6 7
−T − −T
=
T
° °
9
− −
= = x=
T ° − −
= T=
Practice 1.2 (p. 18) 1 2 3 4 5 6
7
New Physics at Work (Second Edition)
1
E t E = Pt = = E P= t E t= = P P=
× × = .
=
−T − −T
=
=
Oxford University Press 2006
°
A Heat
Chapter 1 Temperature, Heat and Internal Energy
8
6
T E = Pt = mc∆T × × = . × × T− = T− + T=
9 10 (a) B (b) E = Pt A
=
E××
7
. °
c E = mc∆T
B E×× m c ∆T = m c ∆T ×c×
(c)
−
Practice 1.3 (p. 32)
. = × . c= c=
× −
. − °
−
1 2
×°
3 4
8
Cmc×°−
T E = mc∆T
5
° °
m c ∆T = m c ∆T ×
×
−T − T T T
= × = T− = = . °
× T−
9
New Physics at Work (Second Edition)
2
Oxford University Press 2006
A Heat
Chapter 1 Temperature, Heat and Internal Energy
Revision exercise 1
(b) P =
Multiple-choice (p. 35) Section A
E t ×
1 2 3
3
(a) Emc∆T E××−
Section B 4 5
(b) °
6
Emc∆T
7
××− − −
=
l −l l −l
t
×l−l l−l
t=
ll−l
=
8 9
4
10
PCPD∆TA ∆TB E = Pt = mc∆T
11 12
PC × t = mA×c×∆TA................................................................
.......
PD × t = mB×c×∆TB....................................................................
Conventional (p. 36) Section A 1
m PC m Ac∆TA = PD mB c∆TB
E = Pt = mc∆T ××m××
PC P m A ∆TA ∆T = = C × B P mB ∆TA PD D ∆TB
m m 2
(a) Emc∆T E××−
New Physics at Work (Second Edition)
=
3
PC ∆TB × = PD ∆TA
×
=
Oxford University Press 2006
...
A Heat
Chapter 1 Temperature, Heat and Internal Energy
Section B 5
.
×
T／
C
(a) E = mc∆T E×× (b) P =
E t
× −T . − . T . T T
= . × = . T− = . = . °
× T−
(b)
P=
×
8
(a)
(c) E = mc∆T 80
E××
P=
70
E t E t= P
60 50 40
6
30
(a) E = mc∆T E
20
×× 10 t／s
(b) m 0
E = mc∆T = m× = m× m= . (c) P =
P=
×
20
40
60
80
100
120
−
E t
×
(d) °° 7
(a) TE = mc∆T
New Physics at Work (Second Edition)
4
Oxford University Press 2006
A Heat
Chapter 1 Temperature, Heat and Internal Energy
(b) (i)
°
E = Pt
t × ° tt (ii) Emc∆T
9
(a) T
××− ××T− ××−T
tt
T°
(iii) −
° (b) T (c) (i)(ii) T／
×××−T
C
××T− T°
(ii)
80
° (c)
70 60 50
10 (a) Att
(i)
t
40 T／ 30
t t
C
(b) (i) 20
60
10
50
E = Pt ×
t／s
A°°
40 0
20
40
60
80
100
120 30
(ii)
20 New Physics at Work (Second Edition)
5
10
0
Oxford University Press 2006 t／s 30
60
90
120
150
180
A Heat
Chapter 1 Temperature, Heat and Internal Energy
15
(a)
(i) ° (ii) °
(b) E = mc∆T E× × ° (c) (d) Emc∆T ° °Emc∆T
(c) A A ABA 11 12 (a) (b) (i) (ii) (c) 13 14 (a) E = Pt P = VI E = VIt ××× (b) (i)
E = mc∆T ×× c° °
(ii)
(A) (B)
New Physics at Work (Second Edition)
6
Oxford University Press 2006
A Heat
Chapter 1 Temperature, Heat and Internal Energy
Physics in articles (p. 41) (a) (b) (i) ×× × ×× (ii) E mc∆T E××× × E P= t E t= = P
×
(c) (d)
New Physics at Work (Second Edition)
7
Oxford University Press 2006
1
Chapter 1 Temperature, Heat and Internal Energy
Temperature, Heat and Internal Energy
Practice 1.1 (p. 11)
10
T
°
1
T °
°
2
− −
3 4 5
11
° °
° (a) (b)
12
(c)
T=
° ° x− −
° 8
= °
x°
6 7
−T − −T
=
T
° °
9
− −
= = x=
T ° − −
= T=
Practice 1.2 (p. 18) 1 2 3 4 5 6
7
New Physics at Work (Second Edition)
1
E t E = Pt = = E P= t E t= = P P=
× × = .
=
−T − −T
=
=
Oxford University Press 2006
°
A Heat
Chapter 1 Temperature, Heat and Internal Energy
8
6
T E = Pt = mc∆T × × = . × × T− = T− + T=
9 10 (a) B (b) E = Pt A
=
E××
7
. °
c E = mc∆T
B E×× m c ∆T = m c ∆T ×c×
(c)
−
Practice 1.3 (p. 32)
. = × . c= c=
× −
. − °
−
1 2
×°
3 4
8
Cmc×°−
T E = mc∆T
5
° °
m c ∆T = m c ∆T ×
×
−T − T T T
= × = T− = = . °
× T−
9
New Physics at Work (Second Edition)
2
Oxford University Press 2006
A Heat
Chapter 1 Temperature, Heat and Internal Energy
Revision exercise 1
(b) P =
Multiple-choice (p. 35) Section A
E t ×
1 2 3
3
(a) Emc∆T E××−
Section B 4 5
(b) °
6
Emc∆T
7
××− − −
=
l −l l −l
t
×l−l l−l
t=
ll−l
=
8 9
4
10
PCPD∆TA ∆TB E = Pt = mc∆T
11 12
PC × t = mA×c×∆TA................................................................
.......
PD × t = mB×c×∆TB....................................................................
Conventional (p. 36) Section A 1
m PC m Ac∆TA = PD mB c∆TB
E = Pt = mc∆T ××m××
PC P m A ∆TA ∆T = = C × B P mB ∆TA PD D ∆TB
m m 2
(a) Emc∆T E××−
New Physics at Work (Second Edition)
=
3
PC ∆TB × = PD ∆TA
×
=
Oxford University Press 2006
...
A Heat
Chapter 1 Temperature, Heat and Internal Energy
Section B 5
.
×
T／
C
(a) E = mc∆T E×× (b) P =
E t
× −T . − . T . T T
= . × = . T− = . = . °
× T−
(b)
P=
×
8
(a)
(c) E = mc∆T 80
E××
P=
70
E t E t= P
60 50 40
6
30
(a) E = mc∆T E
20
×× 10 t／s
(b) m 0
E = mc∆T = m× = m× m= . (c) P =
P=
×
20
40
60
80
100
120
−
E t
×
(d) °° 7
(a) TE = mc∆T
New Physics at Work (Second Edition)
4
Oxford University Press 2006
A Heat
Chapter 1 Temperature, Heat and Internal Energy
(b) (i)
°
E = Pt
t × ° tt (ii) Emc∆T
9
(a) T
××− ××T− ××−T
tt
T°
(iii) −
° (b) T (c) (i)(ii) T／
×××−T
C
××T− T°
(ii)
80
° (c)
70 60 50
10 (a) Att
(i)
t
40 T／ 30
t t
C
(b) (i) 20
60
10
50
E = Pt ×
t／s
A°°
40 0
20
40
60
80
100
120 30
(ii)
20 New Physics at Work (Second Edition)
5
10
0
Oxford University Press 2006 t／s 30
60
90
120
150
180
A Heat
Chapter 1 Temperature, Heat and Internal Energy
15
(a)
(i) ° (ii) °
(b) E = mc∆T E× × ° (c) (d) Emc∆T ° °Emc∆T
(c) A A ABA 11 12 (a) (b) (i) (ii) (c) 13 14 (a) E = Pt P = VI E = VIt ××× (b) (i)
E = mc∆T ×× c° °
(ii)
(A) (B)
New Physics at Work (Second Edition)
6
Oxford University Press 2006
A Heat
Chapter 1 Temperature, Heat and Internal Energy
Physics in articles (p. 41) (a) (b) (i) ×× × ×× (ii) E mc∆T E××× × E P= t E t= = P
×
(c) (d)
New Physics at Work (Second Edition)
7
Oxford University Press 2006
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