Two ideal solenoids of radii r and 4r, respectively, have n turns per meter and each carries a current i. both currents flow in the same direction. the small radius solenoid is placed inside the large radius solenoid so that their axes of symmetry are parallel and separated by a distance d = 2r . neglecting any magnetic screening effects, express anaytically the magnetic field strength on the axis of the small-radius solenoid in terms of the quantities given above and the magnetic permeability of a vacuum, μ0.

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem