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Q. A 1.39 V potential difference is maintained across a 1.2 m length of tungsten wire that has a cross-section area of .81mm square and the resistivity of tungsten is 5.6 times ten to the negative 8 ohms. what is the current in the wire?

Q. An airplane needs to reach a velocity of 226 km/h to take off. On a 2000 m runway, what is the minimum acceleration necessary for the plane to take flight?

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