To answer your question, you need to specify which book you're asking about. For example:
* A specific physics textbook: The number of pages in a physics textbook can vary greatly depending on the level (high school, college, etc.) and the scope of the topics covered.
* A book with "The Laws of Physics" in the title: There are many books with similar titles. You'll need to be more specific.
Please provide more information so I can help you find the answer. 😊