on a molecular scale, what is the difference between an acid and a base?

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.

What energy is it when you flip on a switch on a lamp

Complete each row of the table below by filling in the missing prefix or missing exponent.