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.
Young people may try a number of substances, including alcohol, household chemicals (inhalants), prescription and over-the-counter medicines, illegal drugs, and cigarettes. They use alcohol more than any other substance. Marijuana is the illegal drug that young people use most often. Young people use these substances for many of the same reasons that adults doâto relax or feel good. But they may also have other reasons for using substances.