calculate the wavelength associated with an electron (mass 9.1 ×10^-3 kg) moving with a velocity of 10^3ms^-1 (n= 6.626 × 10^-34 kg m^2s^-1)
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Saline soils usually have an EC of more than 4 mmho cm-1. Salts generally found in saline soils include NaCl (table salt), CaCl2, gypsum (CaSO4), magnesium sulfate, potassium chloride and sodium sulfate.
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