Alength of copper wire carries a current of 14 a, uniformly distributed through its cross section. the wire diameter is 2.5 mm, and its resistance per unit length is 3.3 /km.

a) what is the energy density of the magnetic field at the surface of the wire in j/m^3 ?

b)of the electric field?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy

Describe cytokinesis in plants and animals. in animals: in plants.