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.
Marijuana use ranks second behind alcohol in regards to the most commonly abused drugs by teenagers. There has been an increase in marijuana use among teenagers due to the increasing societal attitudes towards tolerance and perceptions that marijuana is not a dangerous drug.
Study: Teens see binge drinking as no big deal. The results revealed that 78 percent of U.S. teens had drank alcohol, and 47 percent of the group said they'd consumed 12 or more drinks in the past year.When it came to drug use, 81 percent of teens said they had the opportunity to use illicit substances, with 42.5 percent actually tried them.tudy: Teens see binge drinking as no big deal. The results revealed that 78 percent of U.S. teens had drank alcohol, and 47 percent of the group said they'd consumed 12 or more drinks in the past year.