Which subatomic particle is found in the nucleus of all isotopes of hydrogen

One Proton is found in all isotopes of hydrogen.

Explanation:

   Proton is a subatomic particle, with a positive electrical charge of + 1e elemental charge and a mass slightly smaller than that of a neutron. Protons and neutrons, having mass of approximately one unit of atomic mass, are collectively referred to as "nucleons", protons are present in the nucleus of an atom. The number of protons in the nucleus is known as atomic number.

 The best known hydrogen isotopes are propium, tritium and deuterium:

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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