a) Determine the net force that acts on the molecule (calculate the magnitude an
ID: 2271780 • Letter: A
Question
a) Determine the net force that acts on the molecule (calculate the magnitude and describe the direction).
b) What would the net force on the molecule be if the field were uniform with a constant magnitude of 4.6 x 107 N/C?
The polar molecule in the diagram below has a positive charge of +19e at one end and a negative charge of -19e at the other. It is immersed in a nonuniform electric field (and aligned with the field direction). The magnitude of the field is 4.6 x 107 N/C at the negative end of the molecule and drops by 3% at the positive end. Determine the net force that acts on the molecule (calculate the magnitude and describe the direction).Explanation / Answer
Net force= E1.q- E2.q=4.6*0.97*10^7*19*1.6*10^-19-4.6*10^7*19*1.6*10^-19=4.20*10^-12N in direction opposite to the field.
b)For a uniform field, the net force would be 0.
c)If the water molecule accelerates in this field, the field is non- uniform because a net force then acts on it. If no net force acts, the field is uniform.
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