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Suppose that 8.50 g of a nuclide of mass number 105 decays at a rate of $6.24 \times 10^{11}$ Bq. What is its half-life? (Hint: Use the fact that $\Delta N / \Delta t=-\lambda N .$ You are given $\Delta N / \Delta t$ and can figure out $N$ knowing the mass number and mass of your sample.)

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$A$ As in a $\beta$ decay, only the atomic number increases by one unit.

Physics 103

Chapter 30

Nuclear and High-Energy Physics

Atomic Physics

Nuclear Physics

Particle Physics

University of Michigan - Ann Arbor

Hope College

University of Sheffield

Lectures

02:42

Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and the processes by which these arrangements change. The theory of quantum mechanics, a set of mathematical rules that describe the behaviour of matter and its interactions, provides a good model for the description of atomic structure and properties.

02:26

In physics, nuclear physics is the field of physics that studies the constituents and interactions of atomic nuclei. The most commonly known applications of nuclear physics are nuclear power generation and nuclear weapons technology, but the research has provided application in many fields, including those in nuclear medicine and magnetic resonance imaging, ion implantation in materials engineering, and radiocarbon dating in geology and archaeology.

05:43

Suppose that a $8.50 \math…

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Suppose that a 8.50 g of a…

01:07

The radioactive nuclide ha…

04:40

Suppose that a 9.50 g of a…

01:55

A sample containing $_{88}…

03:04

The nuclide ${ }^{18} \mat…

05:47

02:44

Calculate the mass of a sa…

01:10

A certain radioactive nucl…

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