Can I see the graph so I can help you
Atoms of the same element having equal numbers of protons, but different numbers of neutrons is called isotope.
This is possible due to self-discharge. Very small internal currents inevitably occur in these cells over time and they will eventually exhaust the chemistry.
Answer:(a) 2.40 (b) horizontal distance. (c) 0.630. (d) 6.50
Explanation:that's all is talking about a speed and distance and time right