Objects in orbit appear to be weightless because they are in free fall around Earth

A. True
B. False

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

An experimental procedure requires a 10 ml of acid to be dissolved

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.