A particle, which remains at rest, is acted on by three forces: F, G & H. The force F has a magnitude of 45N and is directed to the left and down making an angle of 45 degrees with the vertical. The force G is directed horizontally right and H is directed to the right and up making an angle of 30 degrees with the vertical. Find the magnitude of the vectors G and H to 1 d.p.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.