In order for plants to go through photosynthesis, they must use a. x rays. b. visible light. c. infrared rays. d. ultraviolet light.

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.

Which metals are called noble metals

To separate a mixture of hard candies nd marbles the most efficient method would be