Water in the swimming pool a good model of Earth's interior?
How is it a poor model? (Hint:
Consider both temperature
and pressure in your answer.)

The deeper you go in both Earth's interior and the swimming pool the greater the pressure grows. The difference is the swimming pool contains, mostly liquid and Earth's interior contains mostly solid.

The nuclide is

Explanation: We are given a radioactive nuclide having 46 protons and 62 neutrons.

In an element,

Atomic number = number of protons = number of electrons

Hence, Atomic number = 49

and, Atomic mass = number of neutrons + number of protons

Atomic mass = 62 + 49 = 111

An element having atomic number 49 is Indium (In).

Representing an element = where, X = element

A = Atomic mass

Z = Atomic number

Radioactive isotope used to label blood platelets is