Fluids
Which property of a fluid does not change even if it moves from one point to another with different velocities and areas according to conservation of mass?
Velocity
Density (for an ideal incompressible fluid)
Temperature
Pressure
If a charged particle moves perpendicular to a uniform magnetic field, what path will it follow?
Parabolic trajectory due to constant acceleration.
Straight line as the magnetic field has no effect.
Circular path due to the Lorentz force.
Helical path with increasing radius over time.
When pushing against a solid object at rest with constant force and it doesn’t move, what type of energy exchange takes place?
Radiant energy from muscle exertion is absorbed by the object's surface.
No work or heat exchange since there’s no displacement or temperature change.
Heat is generated due to friction between surfaces in contact.
Work is done on the object converting mechanical to thermal energy.
In an ideal fluid flowing through a closed system where no fluid is lost or added, how does density change with varying cross-section areas along the flow path?
It remains constant since mass cannot be created or destroyed.
INCORRECTORGUNITCT answers are NOT outside related directlyto those that are plausible and relevant could appear on an exam; they also contain only information that would be known by someone familiar enough with physics principles at this level – avoiding any advanced associations beyond scope/AP curriculum guidelines.
If the temperature within a closed system increases while the volume remains constant, how does this affect the internal energy of the system?
The internal energy of the system remains unchanged
The internal energy alternates between increasing and decreasing
The internal energy of the system decreases
The internal energy of the system increases
How does adding resistors in parallel affect overall resistance and total power dissipation if voltage across all components remains constant?
Resistance stays the same because adding more paths does not change individual resistors' values; however, power dissipation goes up thanks to added contributions from each new path even though they each individually follow rule where =current & =voltage drop across given resistor path).
Overall resistance decreases while total power dissipation increases due to more pathways for current flow and increased total current through parallel resistors respectively.
Both overall resistance and power dissipation decrease since each individual resistor dissipates less power when others share carrying some portion of total current load .
Overall resistance increases but power dissipation decreases due to splitting voltage between resistors evenly reducing effective voltage drop per resistor leading to reduced power per Ohm's law .
When a syringe plunger is pulled back slowly, how does this affect the velocity and pressure inside the syringe assuming an ideal fluid?
Velocity decreases and pressure decreases.
Velocity decreases and pressure increases.
Velocity increases and pressure remains unchanged.
Velocity remains unchanged and pressure increases.

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If an electron exhibits wave-like behavior, which of the following phenomena could it display when passing through two closely spaced slits?
An interference pattern on a detector screen.
A curved path in a uniform electric field perpendicular to its velocity.
A decrease in speed due to frictional forces.
A trajectory consistent with classical projectile motion.
When liquid flows from a wider section to a narrower section of a horizontal pipe, how does the velocity of the liquid change?
The velocity increases.
The velocity decreases.
The velocity remains unchanged.
The velocity fluctuates randomly.
If two capacitors with different capacitances and are connected in series, how would the effective capacitance of the equivalent combination compare to the sum of the individual capacitances when charged with the same potential difference across them both together concurrently?
Lower than the sum due to the fact that one acts as a bottleneck, limiting the charge that can be stored by the other.
Greater simply by combining the storing capacities, hence an additive relationship.
Equal to the average of the two amounts, considering the balance of charge distribution between them during the simultaneous charging process.
Smaller than either or because the series connection causes the reciprocals to add, giving a lower overall value.