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
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5
, 9.A negatively charged rod is held near end X of an uncharged metal object
mounted on an insulated stand. Under these conditions, which of the
following must be true?: Ends X and Y are at the same electric potential
10.A nucleus at rest undergoes a radioactive decay in which a beta particle
(an electron) is emitted. The total momentum of the electron and the
nucleus remaining after the decay is not zero. This can be explained by
which of the following?: ANOTHER PARTICLE besides the electron was
emitted during the decay
11.A string of length L is fixed at both ends. The speed of waves on this
string is v. Which of the following expressions gives the lowest frequency
for which a standing wave can exist on the string?: f = (v) / (2L)
12.Change in kinetic energy of the object: W = Change in Kinetic Energy
F*s
13.A wire loop of area A and resistance R is located in a magnetic field
directed into the page, as shown above, whose initial magnitude is Bo. The
field then increases by an amount B in as time interval T. The current
induced in the loop depends on all of the following EXCEPT: Bo --> Doesn't
matter!
14.Which quantity relates heat input and the corresponding increase in tem-
2/
5
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
1/
5
, 9.A negatively charged rod is held near end X of an uncharged metal object
mounted on an insulated stand. Under these conditions, which of the
following must be true?: Ends X and Y are at the same electric potential
10.A nucleus at rest undergoes a radioactive decay in which a beta particle
(an electron) is emitted. The total momentum of the electron and the
nucleus remaining after the decay is not zero. This can be explained by
which of the following?: ANOTHER PARTICLE besides the electron was
emitted during the decay
11.A string of length L is fixed at both ends. The speed of waves on this
string is v. Which of the following expressions gives the lowest frequency
for which a standing wave can exist on the string?: f = (v) / (2L)
12.Change in kinetic energy of the object: W = Change in Kinetic Energy
F*s
13.A wire loop of area A and resistance R is located in a magnetic field
directed into the page, as shown above, whose initial magnitude is Bo. The
field then increases by an amount B in as time interval T. The current
induced in the loop depends on all of the following EXCEPT: Bo --> Doesn't
matter!
14.Which quantity relates heat input and the corresponding increase in tem-
2/
5
