Monday
What is the formula for the speed of light using Temperature?
(331.5 + 0.6 x T) m/s
A disturbance in matter that transfers energy through the matter.
Mechanical Waves
An indication of how high or low a sound is, which is primarily determined by the frequency of the sound wave.
Pitch
A wave in which the vibration of the medium is parallel to the direction the wave travels.
Longitudinal Waves
What is the other formula for speed?
Speed = Wavelength x Frequency
Any speed that is faster than the speed of sound in the medium of interest.
Supersonic Speed
A wave in which the medium vibrates at right angles to the direction the wave travels.
Transverse Wave
If you were to scream at the top of your lungs in space... would the person 3 feet from you be able to hear your screams?
In a transverse wave, how does the medium vibrate?
at right angles to the wave direction
Do sound wave oscillate parallel to or perpendicular to the direction in which the wave travels?
parallel
A recorder is a woodwind instrument in which the player blows into a tube, setting up a wave in the tube. A musician has 2 recorders. The first one is rather short, and the second one is significantly longer. Which recorder is capable of playing notes with the lowest pitch?
The longer one
For waves moving at a constant speed, if wavelength is doubled, what happens to the frequency?
It is halved
What is the speed of sound in air that has a temperature of 25 degrees Celsius?
346.5 m/s
What sound wave has the longest wavelength?
infrasonic waves
A ship blows its horn. Some of the sound waves travel through the air and then hit the water. Will the sound waves travel faster in water or the air?
The Water
Are the wavelengths of the man's sound waves longer than, shorter than, or the same size as those of a woman?
Are the frequencies of the man's sound waves lower or higher than those of a woman?
Since a man has lower pitch, it has longer frequencies.
Are the amplitude of the sound waves of a man greater than or less than a woman, when the women is singing louder?
Less than
Is the speed of a man's voice or a woman's voice faster?
They are the same
During a thunderstorm, the temperature is 10 degrees Celsius. If you see a lightning strike and then hear the thunder 2.0 seconds later, how far away did the lightning strike?
675 m
A jet travels through 10 degrees Celsius air at Mach 3. What is its speed in meters per second?
1,012.5 m/s
A sound wave traveling through 17 degrees Celsius air has a wavelength of 2 meters. What is the frequency of the sound wave?
170.85 Hz
Toward the siren
An amplifier takes a 30 decibel sound and turns it into an 80 decibel sound. How many times larger is the intensity of the sound waves coming out of the amplifier as compared to the intensity of the sound waves going into the amplifier?
100,000 ties larger after the amplifier as compared to before.