Introduction to Health Physics: Fourth Edition - Ruang Baca FMIPA UB

ANSWERS TO
PROBLEMS
2.1 0.53 m/s to the left
2.2 a. 6.25 × 10 5 m/s 2
b. 3.125 × 10 4 N
c. 25 (kg m)/s
d. 25(kg m)/s
2.3 6.02 × 10 24 kg
2.4 17.4 km/h @ 9.5 ◦ to
auto’s direction
2.5 0.0017 radian
2.6 2 × 10 −4 C
2.7 9.8 × 10 −8 C
2.8 1.44 V
2.9 a. 0.73 × 10 7 m/s
1.03 × 10 7 m/s
b. 1.16 × 10 −6 N
2.10 electron: v/c = 0.941
m/m0 = 2.96
proton: v/c = 0.046
m/m0 = 1.001
2.11 2.77 × 10 −13 m
2.12 1.4 × 10 −8 m
2.13 3.73 eV
2.14 5.4 × 10 −10 m
2.15 a. 816 V
b. 0.83 MeV
c. 1.24 MeV
2.16 1.92 × 10 −5 m/s
2.17 a. 1.88 × 10 7 m/s
b. 1.07 × 10 −9 s
2.18 a. 1.9 × 10 7 m/s
b. 1.65 × 10 −9 s
2.19 1.04 × 10 −18 J
2.20 1500 W
2.21 1 × 10 −4 C
2 × 10 −4 C
2.22 a. 45.55 V
b. 4 × 10 6 m/s
2.23 1.42 × 10 −10
2.24 a. 0.8 kg
b. 2.7 × 10 9 kg
2.25 a. 3.83 × 10 26 W
b. 4.3 × 10 6 tonnes/s
2.26 10.5 MeV
2.27 a. 0.39 ˚A
b. 6.614 × 10 −24 m
c. 2.86 × 10 −14 m
2.28 a. 1.05 × 10 3 J/Btu
b. 4186 J/(kg ◦ C)
2.29 a. 0.73 A/m
b. 194.5 V/m
c. 10 mW/cm 2
2.30 a. 1.33 × 10 −6 mW/cm 2
b. 2.65 × 10 −4 A/m
2.31 a. 1.59 × 10 −7 mW/cm 2
b. 3.5 × 10 −2 V/m
c. 9.1 × 10 −5 A/m
2.32 714 V/m, 1.89 A/m
2.33 1.61 × 10 5 m 3
2.34 a. 6.8 × 10 7 m/s
b. 2.65%
2.35 a. 8.375 × 10 −16 J
b. 8.37 5 × 10 −9 erg
c. 5234 eV
2.36 a. 3.077 m/s
b. 4.9 × 10 −12 N
2.37 a1. 2.1 × 10 6 m/s
a2. 2.999 × 10 8 m/s
b. 50
3.1 4.3 × 10 −14 m
3.2 3.29 × 10 22 atoms
3.3 a. 2.49 × 10 −11 cm
b. 2.8 × 10 3 eV
3.4 54.4 eV
3.5 1.1 mA
3.6 0.0075
3.7 1.1 × 10 5 per cm
3.8 1.46 × 10 −15 g(cm/s)
0.4 MeV
3.9 193 nm
3.10 a. 5.7 × 10 11 J
b. 0.48 MeV
3.11 Be: 2.3 × 10 14 g/cm 3
Pb: 2.3 × 10 14 g/cm 3
3.12 K: 2e, L: 8e, M: 3e
3.13 13.6 eV
3.14 0.42 eV
3.15 a. 2.93 × 10 6 m/s
b. 50.7 nm
3.16 3.19 × 10 16 photons/s
3.17 7.587 MeV
3.18 102.3 nm, 12.11 eV
2.93 × 10 15 s −1 ,97nm
12.78 eV, 3.085 × 10 15 s −1
3.19 VH = 2.2 × 10 6 m/s
VHe = 4.5 × 10 6 m/s
3.20 2. 6 eV
3.21 15.99937 amu
3.22 35.45273 amu
3.23 Na: 9.27 × 10 19
Cl: 9.27 × 10 19
H: 6.69 × 10 22
O: 3.34 × 10 22
3.24 2 × 10 4 phot/cm 2 /s
3.25 4.14 MeV
3.26 6.69 × 10 22
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