Which of the following observations indicate an atom has neutrons

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at