Examlex
Evaluate the double integral by first identifying it as the volume of a solid.
Element
A substance consisting of atoms which all have the same number of protons, fundamentally the simplest substances that cannot be broken down using chemical methods.
Isotope
Variants of a particular chemical element that differ in neutron number, and consequently in nucleon number, but have the same number of protons.
Protons
Positively charged particles located in the nucleus of an atom, contributing to the atom's mass and charge.
Isotope
Atoms of the same element with the same number of protons but different numbers of neutrons, leading to different atomic masses.
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