(b) A specimen of an alloy of silver and gold, whose densities 10.50 and 18:90g/eme respectively, weighs 35.20g in air
and 33.13 g in water. Find the composition, by mass of the
alloy,
assuming that there has been no volence change in the
preess of prodhing the alloy.​

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.to decide whether this is a large or a small current density, compare it to the current density of a 7.0 a current in a 2.0-mm-diameter wire.