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.
Marijuana is the most commonly used illicit drug, according to federal statistics. The most prevalent time for people to experiment with it happens to coincide with their childbearing years. Almost half of all Americans ages 18 to 25 have used marijuana at some point in their lives, and about 15% are current users.