Ultrasounds are becoming a common diagnostic procedure in the medical field because they can measure and detect abnormalities. Ultrasound instruments which are also known as sonographic instruments operate by using high frequency sound waves. These sound waves operate using a frequency range of 1 to 18 megahertz that can be used for imaging. These high-frequency sound waves are out of range of human hearing. The lower frequency of the sound waves produce less resolution but can produce images
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Conducted by the German Football Association‚ in conjunction with Sports University of Cologne on 6-10 year olds. • 1992 - 11v11 on 68x95 yard fields • 1994 - 4v4 and 7v7 on 40x30 and 50x70 yard fields respectively • 1995 - 6v6 and 7v7 Games on 40x36yard and 36x55 yard fields respectively • 2 x 5 yard wide goals used in all cases 11v11 On Smaller (68x95) Field • High Lactate Levels Over 4200 yards covered in 50 minutes • Ball contacts - 38 average in midfield‚ only 20 on defense • Tactics and rules
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John McCrae: A Canadian Poet “In Flanders fields the poppies blow Between the crosses‚ row on row‚ That mark our place‚ and in the sky‚ The larks‚ still bravely singing‚ fly Scarce heard among the guns below.”(McCrae‚ 1). John McCrae was born in Guelph‚ Ontario Canada. He was the second son of Scottish immigrants‚ David McCrae and Janet Simpson Eckford McCrae. His father was a woollen manufacturer. He began to write in Guelph College Institute. John was always a remarkable natural attraction
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most important uses for electromagnetism is in electronic motors. The main components are a core rod and many copper wires coiling around the iron rod. The coils rotate around the iron rod because of the magnetic force caused by a certain magnetic field on an electric current. While doing so‚ this turns electrical energy into mechanical energy. When this happens‚ normally a gear is attached to the end of the rod. That Gear is connected to another gear and that can be linked to anything you want to
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that highlights this difference. Imagine that both the ideal conductor and superconductor are above their critical temperature‚ Tc. That is‚ they both are in a normal conducting state and have electrical resistance. A magnetic field‚ Ba‚ is then applied. This results in the field penetrating both materials. Both samples are then cooled so that the ideal conductor now has zero resistance. It is found that the superconductor
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actually saying that it is able to be acted upon by a magnetic field. When electricity flows through a circuit‚ it creates a magnetic field.When a magnet cuts across a circuit‚ a voltage is produced. 2. Discuss the relationship between electric and magnetic fields. (HINT: Be sure to discuss what happens when electric current is applied to a magnetic field.) The relationship that exists between an electric field and a magnetic field is one of electromagnetic interaction as a consequence of associating
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Fairy Fields is never quiet‚ with fairies playing and dancing their protector‚ the dragon Orville played his old guitar. The oldest fairy Opaline‚ sang alongside him‚ And those who lived there lived in joy with their song. Their music made almost everyone happy‚ all but one And today‚ the tune echoed through his domain louder than ever. Who else but the Devil‚ who lived down below‚ Would seethe in anger at the sound of their joy. What horrible noise! This must end right now! He cried. I can’t stand
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such as iron‚ nickel‚ cobalt‚ and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs when no electric current is passed through the test object‚ but a magnetic field is applied from an outside source. The magnetic lines of force are perpendicular to
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into a ferromagnetic phase under the application of magnetic field‚ which results in a field-induced metamagnetic transition (FIMMT). The FIMMT is accompanied by release of latent heat and temperature of the sample as evidenced from differential scanning calorimetry and thermal analysis experiments. A large magnetic entropy change of DSm ¼ À 7.2 J kg À 1 K À 1 at T¼ 212.5 K and refrigeration capacity of 228 J kg À 1 are found for a field change of DH¼ 5 T. It is suggested that destruction of magnetic
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Magnets. How do they work? How does the number of coils affect electromagnetism? Hypothesis: When there is a flow of moving electrons‚ a magnetic field is created. We use the equation F = NIlB (Force = Number of coils x Current x Length of Wire x Magnetic Field Strength) to work out the magnetic force produced in a wire when there is an electric current present. Using this equation we can see that increasing the length of the wire (amount of coils) gives a larger force. So increasing the amount
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