Ans to the even-numbered assigned problems in Ch 30

The following is a list of the answers to the even-numbered assigned problems. IF YOU SUSPECT THAT THERE IS AN ERROR IN THIS LIST, PLEASE LET ME KNOW RIGHT AWAY!

Chapter 30

30.10
(b) 19 keV

30.12 1720 yr

30.18
(a) 4.92 × 10⁻¹⁸ s⁻¹
(b) 2.99 × 10³ kg
(c) 1.24 × 10⁵ decays/s

30.20 2.29 × 10⁴ yr

30.64
(a)⁵⁶Co decays into ⁵⁶Fe
(b) beta+ (positron) decay
(c) 3.55 MeV

Lewis Ford
Physics Department
Texas A&M University
ford@physics.tamu.edu

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