EXERCISE 7 - Rotational Kinematics and circular motion 1. A wheel has a radius of 4.1 m. How far (path length) does a point on the circumference travel if the wheel is rotated through angles of 30°‚ 30 rad‚ and 30 rev‚ respectively? 2.1m‚ 1.2x102 m‚ 7.7. x102m 2. A centrifuge in a medical laboratory rotates at an angular speed of 3 600 rev/min. When switched off‚ it rotates through 50.0 revolutions before coming to rest. Find
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constant. If a ball is attached to the end of string and swung at a constant speed (i.e. only the direction of the velocity is changing not the magnitude) then there must still be an acceleration. The acceleration is directed towards the center of the motion. This acceleration is call centripetal acceleration! 2.6.2 State the expression for centripetal acceleration. The acceleration of any object moving in a circle at a constant speed is given by the equation: (1) a⃗ =v2r It is important to note
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10. Pluto-Sized Eris Rocks Solar System Discovery of Eris in 2005 by Mike Brown‚ a minor body that is 27 percent bigger than Pluto. Eris had trumped Pluto and become the 9th largest body known to orbit the sun. The finding became the trigger that changed the face of our solar system‚ defining the planets and adding Pluto to a growing family of dwarf planets in 2006 by International Astronomical Union (IAU) 9. T. rex Tissue Dug from Bone the discovery of what appeared to be soft tissues - blood
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The verse narrative entitled Gilgamesh written by Herbert Mason presents the theme of self discovery. Gilgamesh is the unrighteous demigod ruler of Uruk. His moral compass can be questioned as he gives his people intensive labour and will sexually harass the women. Consequently‚ he becomes unaware of his limitations because he has absolute power. Inevitably‚ this changes when he meets his near equal Enkidu. They embark on a journey into the forest which holds Humbaba. Enkidu’s fear of death intensifies
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In Graham Robb’s Discovery of France‚ Robb chronicles the social‚ geographical‚ and economic changes in France from the pre-revolutionary period until the first World War. Prior to new governmental policy and dramatic physical changes to the landscape‚ France was far from the unified nation state that is recognizable today. Much of the nation had yet to be discovered‚ nor had it been sufficiently recorded by a cartographer. The rich diversity of culture and language accounted by Robb attempts to
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created by heating limestone. Before the discovery of calcium‚ a man named Antoine Lavoisier classified the lime as “earth” because it was very difficult‚ almost impossible to reduce it further‚ he felt that it was the oxide of an unknown element. But in 1808‚ that is when Humphry Davy tried to reduce moist lime by a process called electrolysis. Humphry Davy tried the same process again but this time with
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Do mistakes lead to discoveries? I think that mistakes do lead to discoveries like‚ when Percy Spencer was standing near the Magnetron and his candy bar was melted then realized that the Magnetron was heating the area up then‚ he asked for some popcorn kernels and put them close to the Magnetron and they popped minutes later‚ so then the microwave was created about 20 years later through many mistakes. In “Lost Cities‚ Lost Treasure” a man named Heinrich Schliemann was digging in the ground of
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The Manhattan Project was a turning point in discovery and weapons. But how do atomic bombs work? Why were they made? And how had it changed us as humans? Nuclear energy has changed humans. It started in 1939 when Albert Einstein‚ a German scientist‚ found out that the Nazis were trying to build a powerful bomb. He warned President Roosevelt about it and persuaded him to try to build one before they did. It would change history. Although he did warn them‚ he was denied “because the left-leaning
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law of motion: For every action‚ there is an equal and opposite reaction. How this applies to our bottle rockets that we constructed‚ is that when we release‚ the water and air pressure comes out of the bottom. That pushes against the ground‚ the equal and opposite reaction is the earth pushing back up. Whatever object has less mass moves. In this case‚ the rocket has less mass than what it is pushing against; the earth. When we created our rockets‚ we had to keep all 3 laws of motion in mind
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LIBERTY UNIVERSITY BAPTIST THEOLOGICAL SEMINARY David: The Sin of a King Analysis of 2 Samuel 11:1-27 Submitted to Dr. Adeeb Mickahail‚ in partial fulfillment of the requirements for the completion of the course OBST 515-D18 Old Testament Orientation 1 by Lisa Campbell December 3‚ 2013 The story of David and Bathsheba as found in 2 Samuel11:1-27 tells us about King David’s sin. How can we as Christians apply the model from this story to our own lives? There are many
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