Answer:
Explanation:
I1 = 3 A right
I2 = 6.8 A left
Let the distance is r from both the wires on the same side.
The formula for the magnetic field is given by
As the direction of current in both the wires is opposite to each other
so the net magnetic field is
B = B2 - B1
I would say C because extra friction would make the machine work more and therefore create more heat.
The work that is done when twice the load is lifted twice the distance is
four times as much
The net work performed by forces acting on an object equals the change in kinetic energy, according to the work-energy theorem.
when an item slows down, the net work applied to it decreases, its change in kinetic energy is negative, and its ultimate kinetic energy is less than its starting kinetic energy. When an item accelerates, positive net work is done on it. All the forces acting on an item must be taken into consideration when determining the net work. You will obtain an incorrect result if you exclude any forces that affect an item or if you add any forces that do not affect it.
Hence The work that is done when twice the load is lifted twice the distance is four times as much
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