Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too much filler, too little content

I wouldn't recommend this book to anyone who already owns an introductory physics text such as Halliday and Resnick or the Feynman Lectures...the quantity of material beyond the scope of those books is very disappointing. The authors seem more interested in pretty pictures and impressive graphs than content. The only chapter I found useful was the chapter on nuclear physics. If you can find this book used for a bargain, it might be worth the money, but at the full price, purchase at your own risk.