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A sphere is charged to 20 µC. Find the potential at the following points. A, B and C (A point is at the center of the sphere, B is at the surface and C is 4cm from the surface.) AB r1=2cm, BC r2=4cm
How much load will be raised when an effort of 200N is applied at the input piston?
You drop a rock into a well and count the seconds before you hear a splash. If you counted 10 seconds before you heard the splash, how deep is the well?
the left at 55° above the horizontal, 81.4 N to the left at 30° below the horizontal and 24.0 N to
the right at 50° below the horizontal.
72.4 m, 32^o east of south
57.3 m, 36^o south of west
17.8 m straight south
What is the magnitude and direction of the resultant?
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