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.
Looking over the past 10 years, data show that more and more teens are saying no to drugs, period. They are not even trying them once. Still, to answer the question, statistics from 2009 (PDF, 362.76KB) show that the drug most often abused by teens in 8th, 10th, and 12th grades is alcohol, followed by marijuana. The third most abused drug varies by gradeâfor 8th graders, itâs inhalants.