When using science to investigate physical phenomena, which characteristic of the event must exist? predictable
measurable
provable
readable
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The correct answer is B. Measurable

Explanation:

The use of science to investigate a phenomenon implies using measurements and observations to better understand a phenomenon or test a hypothesis. Moreover, science focuses on natural phenomena that can be objectively studied through measurement instruments such as a thermometer, balance, hydrometer, etc.

In this context, for a phenomenon to be studied by science this needs to be measurable because the use of precise instruments as wells as numbers allow scientist to analyze and understand a phenomenon. Moreover, phenomena that depend on personal perspectives and cannot be measure is considered as non-scientific.

this is poiselle's equation from fluid mechanic in physics. mech eng

the best answer for these questions would be:

1.            c. is smaller

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4.            a) parents who reason openly with children can limit a child’s cognitive ability.