Eight solid plastic cubes, each 3.00 cm on each edge, are glued together to form each one of the objects (i, ii, iii, and iv) shown in Figure P23.37.
(a) Assuming each object carries charge with uniform density 400 nC/m3 throughout its volume; find the charge of each object.
(b) Assuming each object carries charge with uniform density 15.0 nC/m2 everywhere on its exposed surface; find the charge on each object.
(c) Assuming charge is placed only on the edges where perpendicular surfaces meet, with uniform density 80.0 pC/m, find the charge of each object.

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(iv)