It turns out that there are at three simple machines found in a bicycle: lever, pulley, and wheel-and-axle. There are three more kinds of simple machines: an inclined plane, a wedge and a screw. When a machine is comprised of more than one type of simple machine, it is called a compound machine.
Obviously the bicycle’s front and rear wheels are examples of a simple ...
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Black boxes are virtually indestructible because they are manufactured to withstand flames up to 2,000 degrees and an impact velocity of about 310 mph. There are usually two of them in an airplane. One is the flight data recorder box and the other is the cockpit voice recorder box. The flight data recorder captures and stores information on the engine performance and other flight ...
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If a hot air balloon runs out of hot air, the balloon will no longer be able to stay in the air and it will fall to the ground. The hot air keeps the balloon afloat because air is a gas and when it is heated, the molecules in the air expand and become less dense or lighter than the air outside the balloon. A person piloting a hot air balloon can control the landing by letting the air inside ...
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Yes, parachutes can get stuck in electrical wires and it has happened more times than you would probably believe, although it is probably not as common as parachutes getting stuck in trees. I think the most recent publicized incident of a parachute getting stuck in electrical wires may have been in February, 2016.
During a training exercise, an Army skydiver from Fort Bragg, North ...
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Memorial Day is a holiday in the United States. It was initially celebrated on May 30th, but now it is celebrated on the last Monday in May, regardless of the date. The day may also be referred to as Decoration Day. The purpose of the day is to honor those people who fought for our country and paid the ultimate sacrifice of their lives.
Most people have Memorial Day off, so they see ...
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Memorial Day is a federal holiday in the United States. It is celebrated on the last Monday in May. The day is meant to celebrate those who have died while serving our country. Most people have the day off, so there are many ways they can celebrate. In respects to honoring the fallen soldiers, a person can participate in a Memorial Day parade. Another way to honor them is to go to the ...
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Memorial Day is a federal holiday celebrated in the country of United States. As we know the day now, it is celebrated in May, on the last Monday of that month. It is to celebrate those who have died while they served our country and fought for our freedoms.
The day was originally known as Decoration Day. This name came from the fact that after the Civil War, the graves were ...
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Many people in the United States do believe African Americans are treated unfairly by the police. In fact, there is a name for this treatment and it is called racial profiling. The American Civil Liberties Union defines racial profiling as “the discriminatory practice by law enforcement officials of targeting individuals for suspicion of crime based on the individual's race, ethnicity, ...
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The foreign policy strategy of the Swiss government for their 2012-2015 legislative period perhaps explains how they handle diplomatic solutions so well. Their strategy has four priorities: (1) maintain and develop relations with neighboring states with a special emphasis on border regions, (2) adjust and strengthen relations with the EU while safeguarding the Swiss scope of political and ...
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The Korean civil war began in June of 1950 when the North Korean army attacked South Korea by crossing the 38th parallel, the artificial dividing line that separated the north from the south. North Korea claimed they were attacking in response to an attack by South Korea. However most historians agree this was probably a lie and was actually a premeditated offensive with the backing and ...
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