Physics, 25.11.2019 21:31 cefindley14

The earth's magnetic field, with a magnetic dipole moment of 8.0×1022am2, is generated by currents within the molten iron of the earth's outer core. suppose we model the core current as a 3000-km-diameter current loop made from a 1000-km-diameter "wire." the loop diameter is measured from the centers of this very fat wire.

a. what is the current in the current loop?

b. what is the current density j in the current loop?

c. to decide whether this is a large or a small current density, compare it to the current density of a 3.0 a current in a 2.0-mm-diameter wire.

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 14:30, sross8799

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?

Answers: 2

continue

Physics, 23.06.2019 02:30, bombo99

Anthropology is the study of the effects of disease on the body, while forensic anthropology studies the disease of crime a.) true b.) false

Answers: 2

continue

Physics, 23.06.2019 02:30, Andrewecolt1993

Aforce is a vector quantity because it has both?

Answers: 1

continue

Physics, 23.06.2019 09:30, cynayapartlow88

When you notice something that is happening, what are you making? a. an observation b. a law c. a theory d. an experiment