An experiment to determine the Young's modulus of the beam using bending beams.

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an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

i need with 1.3.2 investigate cycling o2 and co2 apex

we need to see it

3. dark matter

empty space could also be a simple vacuum