The density of the blade is constant throughout its length, and so a 10%-mass. fragment will have a cross-sectional area of 10% of the full blade. In practice, the. area of a 10%-mass fragment will vary depending upon its shape, and upon whether. it consists of the only the outer shell or the internal beams as well.
Alcohol is the most commonly used and abused drug among youth in the United States.1. 1  Excessive drinking is responsible for more than 4,300 deaths among underage youth each year, and cost the U.S. $24 billion in economic costs in 2010.2,3.
1 Itâs not a drug to be taken lightly. 2  Prescription drugs: An estimated 20% of teens have used prescription drugs to get high. 3  This growing trend is so troubling because of how easy it is to obtain these drugs; most kids can find them in their parentsâ bathroom cabinet.