Field
Field
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 BuildingPro 24x36 Modular Building Field Office Trailer US $31,968.00
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 BuildingPro 12x56 Modular Building Field Office Trailer US $21,315.00
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 BuildingPro 12x36 Modular Building Field Office Trailer US $18,416.00
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 NEW 2011 77x 16 OIL FIELD TRASH LANDSCAPE HAUL UTILITY TRAILER US $3,395.00
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 Handheld Recon With Case IH Field Map Software US $1,895.00
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 15 Each 30ft 2 3 8 steel pipe for fence ect WE SELL LOTS OF OIL FIELD PIPE US $1,050.00
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 Ridgid 12 R Pipe Threader 6 Dies 700 tools plumbing oil field hand US $237.50
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 TOTAL STATION FIELD CASE US $195.00
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How to calculate Electric field Strength at a Point between Two charges?
If I have two charges of -4nC and -6nC, and they are 40cm apart, what is the electric field strength at the midpoint between these two charges? How do I know if it's positive or negative? Does it matter?
What if the charges are Made up of a positive charge and a negative charge? Do I add up the individual field strength?
The beautiful thing about electric fields is that they add linearly, this is the law of superposition. So All you have to do is calculate the E-field due to Each charge, and then add them. Use the formula E=kq/r and then Take the sum Over both charges. Since this is a vecor field, r Must be positive for One and negative for the Other. You should find that when the charges are alike, the magnitude of the field is Less than when they are different. Just imagine what a Small positive Test charge would do.
