David Sang and Darrell Hamilton Solutions for Chapter: Radioactivity, Exercise 4: Exercise 23.4
David Sang Physics Solutions for Exercise - David Sang and Darrell Hamilton Solutions for Chapter: Radioactivity, Exercise 4: Exercise 23.4
Attempt the free practice questions on Chapter 23: Radioactivity, Exercise 4: Exercise 23.4 with hints and solutions to strengthen your understanding. Physics for Cambridge IGCSE workbook solutions are prepared by Experienced Embibe Experts.
Questions from David Sang and Darrell Hamilton Solutions for Chapter: Radioactivity, Exercise 4: Exercise 23.4 with Hints & Solutions
State the radioactive decay.
Describe radioactive decay. In your description, include
The types of decay
Their effect on the parent nucleus
Nuclear equations as appropriate.
A sample of a radioactive substance contains undecayed atoms. Its half-life is years. Calculate the number that will remain undecayed after years.
A radioactive substance has a half-life of years.
Calculate the time it will take for the number of undecayed atoms in a sample to fall to one-eighth of their original number.
The table shows the activity of a radioactive sample changed as it decayed.
| Time h | |||||
| Activity counts per second |
On the grid, draw a graph of activity against time and use it to deduce the half-life of the substance.
Show your method on the graph.
The half-life is approximately .
A source contains two different elements with unstable nuclei. Isotope has a half-life of hours, isotope has a half-life of hours. The count rate from each is per second, to begin with. Calculate the count rate after hours.
