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2025 Physics Questions and Answers Graded A+
1.Two Uncharged Rods Question: Either one or both of the rods are
permanent magnets
2.Caused by interference between two sound waves of slightly different
fre- quencies: Beats
3.Primarily determined by the fundamental frequency of a sound wave: Pitch
4.Difference in sound that makes a given note played on a piano
distinguish- able from the same note played on a guitar: Timbre (Quality)
5.If a body on which three forces are acting is in equilibrium,: The vector
sum of the three forces is zero
6.Oersted observed that a current-carrying wire caused a nearby compass
needle to be deflected. This experimental result is interpreted as evidence
that the current: Created a MAGNETIC field
7.When the bulb of an ordinary thermometer made of mercury in glass
is warmed, the mercury rises in the stem because: The coefficient of
volume expansion of mercury is greater than that of glass
8.Electric field (positive and negative charge): Flow from positive to
negative
