Periodic Waves - AP Physics 2

$T = 4$ s. Using $T = \frac{1}{f} = \frac{1}{0.25} = 4$ s.

$f = \frac{1}{T}$. Frequency is the reciprocal of period.

Meters per second (m/s). Standard SI unit for velocity measurements.

Frequency is halved, assuming constant speed. From $v = f\lambda$, if $\lambda$ doubles and $v$ constant, $f$ halves.

$\nu = 5$ m. Using $\lambda = \frac{v}{f} = \frac{10}{2} = 5$ m.

Wave with oscillations perpendicular to wave direction. Particle motion is at right angles to wave propagation.

Wave with oscillations parallel to wave direction. Particle motion is along the direction of wave travel.

Multiples of $2\text{π}$ radians. Waves are in phase for maximum reinforcement.

$v = 8$ m/s. Using $v = \frac{\lambda}{T} = \frac{4}{0.5} = 8$ m/s.

Odd multiples of $\text{π}$ radians. Waves are out of phase for cancellation.

Meters (m). Amplitude is a distance measurement.

A point of zero amplitude. Location of destructive interference in standing waves.

Meters (m). Amplitude is a distance measurement.

Number of cycles per second. Measures how often the wave pattern repeats.

$T = 0.2$ s. Using $T = \frac{1}{f} = \frac{1}{5} = 0.2$ s.

They are reciprocals: $T = \frac{1}{f}$. Frequency and period are inverse quantities.

Intensity is proportional to amplitude squared. Energy carried by wave depends on amplitude squared.

Meters (m). Standard SI unit for distance measurements.

$\nu = 5$ m. Using $\lambda = \frac{v}{f} = \frac{20}{4} = 5$ m.

Change in frequency due to relative motion of source and observer. Apparent frequency shift due to motion.

A point of maximum amplitude in a standing wave. Location of constructive interference in standing waves.

$f = \frac{1}{T}$. Frequency is the reciprocal of period.

$v = 8$ m/s. Using $v = \frac{\lambda}{T} = \frac{4}{0.5} = 8$ m/s.

Multiples of $2\text{π}$ radians. Waves are in phase for maximum reinforcement.

Wave with oscillations parallel to wave direction. Particle motion is along the direction of wave travel.

Approximately 343 m/s. Standard reference value for sound wave calculations.

$P = I \times A$. Power equals intensity times area.

Meters per second (m/s). Standard SI unit for velocity measurements.

$\nu = 5$ m. Using $\lambda = \frac{v}{f} = \frac{10}{2} = 5$ m.