M <span>represent mass in kg
</span><span>v represents speed in m/s
</span><span>r represents radius in m
Now, just substitute these into the formula:
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C.half the energy is carried by the electric field and half is carried by the magnetic field.
She does 200J .
We know she uses 20N of force and 10m is the distance. We multiply both numbers and we are given our answer of 200J. Hope this was helpful. :)
Not 100% but i think it'll cause the earth to rotate slightly slower, its definitely not the last one though