Identical to that of a piece of string, but not as thick.
depends on the piece of lead.
Lump
A lump
log
It is, a lump or small piece - a nub of coal or a nub of pencil
Far from it. A piece of moon rock has about the same reflectivity of a lump of coal.
log
A 16 mil piece of plastic is as thick as 0.04 centimeters. 16 mil would equal 0.016 inches. As you can see, this piece of plastic would not be very thick.
piece, block, mass, portion, lump, slab, hunk, nugget
piece, bar, mass, brick, lump, chunk, hunk, ingot
Typically, cardboard is lass than 0.4 cm thick.