4.

(a) Let the reading on the Celsius scale be x and the reading on the Fahrenheit scale be y. Then

y =

9
5

x + 32. If we require y = 2x,then we have

2x =

9

5

x + 32

=

⇒ x = (5)(32) = 160

◦

C

which yields y = 2x = 320

◦

F.

(b) In this case,we require y =

1
2

x and find

1

2

x =

9

5

x + 32

=

⇒ x = −

(10)(32)

13

≈ −24.6

◦

C

which yields y = x/2 =

−12.3

◦

F.

Document Outline

• Main Menu
• Chapter 1 Measurement
• Chapter 2 Motion Along a Straight Line
• Chapter 3 Vectors
• Chapter 4 Motion in Two and Three Dimensions
• Chapter 5 Force and Motion I
• Chapter 6 Force and Motion II
• Chapter 7 Kinetic Energy and Work
• Chapter 8 Potential Energy and Conservation of Energy
• Chapter 9 Systems of Particles
• Chapter 10 Collisions
• Chapter 11 Rotation
• Chapter 12 Rolling, Torque, and Angular Momentum
• Chapter 13 Equilibrium and Elasticity
• Chapter 14 Gravitation
• Chapter 15 Fluids
• Chapter 16 Oscillations
• Chapter 17 Waves—I
• Chapter 18 Waves—II
• Chapter 19 Temperature, Heat, and the First Law of Thermodynamics
  • 19.1 - 19.10
    • 19.1
    • 19.2
    • 19.3
    • 19.4
    • 19.5
    • 19.6
    • 19.7
    • 19.8
    • 19.9
    • 19.10
  • 19.11 - 19.20
    • 19.11
    • 19.12
    • 19.13
    • 19.14
    • 19.15
    • 19.16
    • 19.17
    • 19.18
    • 19.19
    • 19.20
  • 19.21 - 19.30
    • 19.21
    • 19.22
    • 19.23
    • 19.24
    • 19.25
    • 19.26
    • 19.27
    • 19.28
    • 19.29
    • 19.30
  • 19.31 - 19.40
    • 19.31
    • 19.32
    • 19.33
    • 19.34
    • 19.35
    • 19.36
    • 19.37
    • 19.38
    • 19.39
    • 19.40
  • 19.41 - 19.50
    • 19.41
    • 19.42
    • 19.43
    • 19.44
    • 19.45
    • 19.46
    • 19.47
    • 19.48
    • 19.49
    • 19.50
  • 19.51 - 19.60
    • 19.51
    • 19.52
    • 19.53
    • 19.54
    • 19.55
    • 19.56
    • 19.57
    • 19.58
    • 19.59
    • 19.60
  • 19.61 - 19.70
    • 19.61
    • 19.62
    • 19.63
    • 19.64
    • 19.65
    • 19.66
    • 19.67
    • 19.68
    • 19.69
    • 19.70
  • 19.71 - 19.80
    • 19.71
    • 19.72
    • 19.73
    • 19.74
    • 19.75
    • 19.76
    • 19.77
    • 19.78
    • 19.79
    • 19.80
  • 19.81 - 19.90
    • 19.81
    • 19.82
    • 19.83
    • 19.84
    • 19.85
    • 19.86
    • 19.87
    • 19.88
    • 19.89
    • 19.90
  • 19.91 - 19.100
    • 19.91
    • 19.92
    • 19.93
    • 19.94
    • 19.95
    • 19.96
    • 19.97
    • 19.98
    • 19.99
    • 19.100
  • 19.101 - 19.110
    • 19.101
    • 19.102
    • 19.103
    • 19.104
    • 19.105
    • 19.106
    • 19.107
    • 19.108
    • 19.109
    • 19.110
• Chapter 20 The Kinetic Theory of Gases
• Chapter 21 Entropy and the Second Law of Thermodynamics
• Chapter 22 Electric Charge
• Chapter 23 Electric Fields
• Chapter 24 Gauss’ Law
• Chapter 25 Electric Potential
• Chapter 26 Capacitance
• Chapter 27 Current and Resistance
• Chapter 28 Circuits
• Chapter 29 Magnetic Fields
• Chapter 30 Magnetic Fields Due to Currents
• Chapter 31 Induction and Inductance
• Chapter 32 Magnetism of Matter: Maxwell’s Equation
• Chapter 33 Electromagnetic Oscillations and Alternating Current
• Chapter 34 Electromagnetic Waves
• Chapter 35 Images
• Chapter 36 Interference
• Chapter 37 Diffraction
• Chapter 38 Special Theory of Relativity
• Chapter 39 Photons and Matter Waves
• Chapter 40 More About Matter Waves
• Chapter 41 All About Atoms
• Chapter 42 Conduction of Electricity in Solids
• Chapter 43 Nuclear Physics
• Chapter 44 Energy from the Nucleus
• Chapter 45 Quarks, Leptons, and the Big Bang