Explanation:
Parameters
Number of oscillation = 40 oscillations
Time of oscillation = 128s
Formular
Period (T) = <u>No of oscillation</u>
Time taken
T = <u>128</u>
40
T=3.2s
Plant material in the soil called organic carbon can't decompose, or rot away.
Force on a moving charge is given by

Given that
q = 6.8 C

B = 1.4 T
angle = 15 degree



Answer:
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