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An infinitely long wire carries a current of three amps. The magnetic field outside the wire:
a) Points radially away from the wire
b) Points radially inward
c) Circles the wire
d) is zero.
Ans:
An infinitely long wire carries current of 3 amps. Outside the wire circles the magnetic field circles the wire.
Total height of the gymnast just before falling back down is=(2+.3)=2.3m Energy gained at that point = m*g*h(m=mass, g=gravitational force, h=height) =55*9.8*2.3=1239.7 J
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