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.
Prescription drug misuse has become a large public health problem, because misuse can lead to addiction, and even overdose deaths. For teens, it is a growing problem: After marijuana and alcohol, prescription drugs are the most commonly misused substances by Americans age 14 and older. Teens misuse prescription drugs for a number of reasons, such as to get high, to stop pain, or because they think it will help them with school work.