<em>Introduction:</em>
The majority of high school students do not get enough sleep each night, and this trend has increased in recent years. A policy that is gaining traction is that of delaying school start time in order to allow students to sleep more hours each night.
<em>Body 1: </em>
Based on this assumption, the Seattle School District decided to delay school start time by nearly an hour during the 2016-2017 academic year. Instead of beginning the school day at 7:50, now students were able to begin the day at 8:45 am. This was done in order to counteract a trend that is common in industrialised societies. Adolescents operate best when they get nine hours of sleep. However, few students enjoy this.
<em>Body 2:</em>
According to the publication Science Advances, this change allowed students to enjoy 34 minutes of extra sleep on average each day. The total nightly sleep increased from six hours and 50 minutes to seven hours and 24 minutes. This meant that most students were sleeping longer than they were before. By sleeping longer hours, they were also more likely to be aware at school. It also reverses the trend on sleep deprivation in students.
<em>Body 3:</em>
I believe that this is a good change. The Seattle School District has proven that delaying school time does help students get more sleep. In turn, when students get closer to their recommended sleep time, they are more likely to perform better at school, feel less anxious, handle stress better and build positive relationships with people. I believe this is a change that should be implemented all over the country.
<em>Conclusion:</em>
In conclusion, evidence shows that delaying school start times can increase the time that students sleep, and in turn this can increase their overall health and well-being. This measure should be implemented all over the country.
Answer:
Input
Explanation:
Making a block of cheese into shredded cheese with a cheese grater
Input is the block of cheese
The output is the shredded cheese
Answer:
,
Explanation:
The process is modelled after the First and Second Law of Thermodynamic:
The properties of the fluid are obtained from steam tables:
Inlet
Outlet
The heat transfer is:
Lastly, the entropy production is:
Answer:
False
Explanation:
The spiral gearing is the application that is commonly used in any vehicle where the drive from the shaft will turn perpendicular to the drive of the wheel.
The two parallel and coplanar shafts are connected by gears having helical teeth perpendicular to the axis of the shaft.
Spiral gearing application is appropriate for any machine or vehicle with a demand of great velocity and large torque power.
When two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft, the arrangement is known as spiral gearing is therefore false.