CHAP 22 ( 35) A current path shaped as shown in Figure, produces a magnetic field at P, the center of the are. f the 'are subtends an angle of e = 30' and the rad ius of the are is bm, what are the magnitude and direction of the field produced at Pif the curvent is 3A? uSE BIOT - SANAKT LAW dB = M, Idsxf 030° %3D 6: 300 I = 3A = 4T X 10 %3D

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.