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Answers
Answer:
iv. efficiency = (work output / work input) x 100% efficiency = ([load force x load distance] x [effort force x effort distance]) x 100% efficiency = (500 N x 1.0 m) / (100 N x 10 m) x 100%
v. When energy is transformed from one form to another, or moved from one place to another, or from one system to another there is energy loss. This means that when energy is converted to a different form, some of the input energy is turned into a highly disordered form of energy, like heat.
vi. The work done by each person is,
W=50kg×10m/s
2
×2m
=1000 J
Power is equal to work done per unit time
Power of first person will be,
=
10sec
1000J
=100W
Power of second person will be
=
50sec
1000J
=20W
Explanation:
Youth unemployment is the situation of young people who are looking for a job, but cannot find a job, with the age range being that defined by the United Nations as 15–24 years old. An unemployed person is defined as someone who does not have a job but is actively seeking work. In order to qualify as unemployed for official and statistical measurement, the individual must be without employment, willing and able to work, of the officially designated "working age" (often from the teens to the mid-60s) and actively searching for a position. Youth unemployment rates tend to be higher than the adult rates in every country in the world.
Young people protest about youth unemployment in Hamburg.
Youth unemployment has largely been described as a major, if not the primary catalyst for revolution, political and societal upheaval, and conflict towards the system and state. It has historically been associated with upheaval and change or overthrow of the political establishment and mass societal change. With conflicts such as the Arab Spring, Russian civil war and the French revolution all largely being caused by large scale youth unemployment.[1