Answer:
B. Only wavelengths between infrared and ultraviolet
Explanation:
That is the visible spectrum if you look up a diagram of the light spectrum.
Answer:
0.906 N
Explanation:
Formula for magnetic force acting on current carrying cable:

Where I = 345A is the current in the wire, B =
is the magnetic magnitude generated by Earth. L = 46.9 m is the cable length.
is the angle between vector B and cable direction.


magnetic field due to a finite straight conductor is given by

here since it forms an equilateral triangle so we will have

also the perpendicular distance of the point from the wire is

now from the above equation magnetic field due to one wire is given by



now since in equilateral triangle there are three such wires so net magnetic field will be

Answer:
= 1.9792 × 10^10
Significant Figures= 5
Explanation:
Look at the attachment below
Hope this helps (: