The fluid pressure 10 ft underwater is the fluid pressure 5 ft underwater

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

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