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When Millikan observed oil drops hovering at rest in his chamber, he knew that
Q3: Electrons fired in vintage TV tubes traveled
Q13: After passing through double slits, electrons make
Q46: When an electron de-excites from the third
Q52: Iron absorption lines that occur in the
Q56: If an object has twice as much
Q64: The force of gravity acts on a
Q121: If an elephant grew in proportion to
Q135: The trajectory of a cannonball fired from
Q148: A 100-N little physics tyke hangs on
Q204: The boy plays "solitary seesaw" as shown.