Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 1.31 cm in diameter and carries a current of 39 A. If the bird’s feet are 8.12 cm apart, what is the potential difference across its body? Copper’s resistivity is 1.68 × 10−8 Ω m . Answer in units of µV.

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

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