i will give the brainliest answer to whoever answers this. how did Sir William Gilbert support his theory of magnetic fields

whan he observed that magnetic forces often produced circular motions,he began to connect the phenomenon of magnetism with the rotation of the earth.This led to his discover of the earth's own magnesium,and provided the theoretical foundation for the science of geomagnetism.

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answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2