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Question : The model of the hydrogen atom I showed consisted of one proton and one orbiting electron. Would the atom still be hydrogen if the proton were joined by a neutron to make it a two-particle nucleus? Defend your answer.

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Question : Which contributes more to an atom's mass electrons or protons? Which contributes more to an atom's size electrons or protons?

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Question : Suppose you dunk your head a certain distance into a barrel-full of water. You'll feel water pressure against your ears. How would this pressure compare if you dunked your head the same distance into a barrel-full of salt water?

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Question : If liquid pressure were the same at all depths in water, would there be a buoyant force on a boulder beneath the surface of water? Why or why not?

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Question : If one of the gondolas carriednoboat, only water, would the two gondolas be balanced? Defend your answer.

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Question : Suppose a submarine is submerged at a particular depth in a body of seawater ofconstant densityfrom the surface to the ocean floor. How would the buoyant force on the submarine compare if it were at rest appreciably deeper? More, less, or the same? Defend your answer.