As a liquid is added to a beaker, the pressure exerted by the liquid on the bottom of the beaker . A. Stays the same B. Decreases C. Increases

The pressure exerted by the liquid in the bottom of the beaker increases when a liquid is added to a beaker compared to the liquid near the beaker point. As density rises in increasing type of matter, the pressure increases.

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wavelength divides in half and speed stays the same.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.