Vibrations and Waves
This is the law that relates the force on a spring to the distance it is stretched.
Hooke's Law
This is the quantity that denotes the intensity of sound as perceived by the ear. It is measured in decibels.
Loudness
This is when the luminous flux, the rate at which a light source produces light, falls on a given surface area at any instant.
Illuminance
When you add a 45-kg load to the trunk of your new car, you notice the back two shock springs compress 1.0cm. What is the spring constant of each of the springs?
22,000 N/m
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Piano
The period of a pendulum solely relies on these two quantities.
Length, Gravity
This is the physics phenomenon of something vibrating at its fundamental frequency. It is what creates standing waves of air in brass and woodwind instruments and standing waves along the strings of stringed instruments.
Resonance
The speed of light was first calculated by the Danish astronomer, Ole Roemer, by using the orbital period of this moon of Jupiter as it emerged from the planet's shadow.
Io
5.33 microseconds compared to 4.66 seconds
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Trombone
The energy of a wave is determined by the measurement of this wave property.
Amplitude
This type of instrument only allows multiples of standing waves in fourths. This causes odd numbers of frequencies/harmonics e.g. fundamental, third harmonic, fifth harmonic, etc.
This is the production of light that has a certain pattern of oscillation. Reflections have this pattern.
Polarization
If you drop a stone into a well that is 122.5m deep, how long after you drop the stone will it take for you to hear it hit the bottom of the well?
5.4s
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Flute
Refraction
The sound emitted by bats has a wavelength of 3.5mm. What is the frequency of this wave? Remember, humans can detect frequencies through a range of 20Hz - 20,000Hz.
98,000Hz
Find the illumination 4.0m below a 405-lm lamp.
2.0 lx
A trumpet player sounds the note A (440Hz) while riding on a train. At the same time a trumpet plays the same note while standing next to you train station platform. You hear a beat frequency of 3.0Hz. How fast is the train moving toward you?
2.3 m/s
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Cello
The time needed for a water wave to change from the equilibrium level to the crest is 0.18s.
What fraction of a wavelength is this?
What is the period and frequency of the wave?
1/4th
0.72s and 1.4Hz
A vertical tube is filled with water and a tuning fork vibrates over the top of it. As the water level is lowered, resonance is heard at the 17cm and 49cm marks. What is the frequency of the tuning fork?
540Hz
Light from the burning hydrogen of a distant star is known to have a wavelength of 434. If this wavelength is redshifted by 6.50 percent, how fast is the galaxy moving away from Earth?
1.95 x 10^7 m/s
Because the sun rotates on an axis, its edges move toward and away from the Earth. The sun fully rotates in 25 days and has a diameter of 1.4 x 10^9 m. If the wavelength of light from the sun is 487 nm, what is the change in wavelength observed at the edges moving toward and away from the Earth? Give your answer in nm.
0.00324 nm (Not enough to be an observable shift)
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Timpani