Aclassic piagetian test of formal reasoning is the

The classic piagetian test for formal reasoning is called the pendulum problem. In this test, psychologists will see how the children experiment.  It will use a pendulum, or a pendulum-like type and the amount of swing will depend on the height and the weight of the pendulum and how high it is. 

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

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i truly dont know the answer wait i do its 1,3,4