Sound, a mechanical disturbance from a state of equilibrium that propagates through an elastic material medium. A purely subjective definition of sound is also possible, as that which is perceived by the ear, but such a definition is not particularly illuminating and is unduly restrictive, for it is useful to speak of sounds that cannot be heard by the human ear, such as those that are produced by dog whistles or by sonar equipment.
The study of sound should begin with the properties of sound waves. There are two basic types of wave, transverse and longitudinal, differentiated by the way in which the wave is propagated. In a transverse wave, such as the wave generated in a stretched rope when one end is wiggled back and forth, the motion that constitutes the wave is perpendicular, or transverse, to the direction (along the rope) in which the wave is moving. An important family of transverse waves is generated by electromagnetic sources such as light or radio, in which the electric and magnetic fields constituting the wave oscillate perpendicular to the direction of propagation.
Study the wave motion of sound radiating from a point source
using a suspended spring
Study the wave motion of sound radiating from a point source using
a suspended spring
The propagation of vibrating sound waves is similar to the action
of a vibrating spring.
Sound propagates through air or other mediums as a longitudinal
wave, in which the mechanical vibration constituting the wave
occurs along the direction of propagation of the wave. A
longitudinal wave can be created in a coiled spring by squeezing
several of the turns together to form a compression and then
releasing them, allowing the compression to travel the length of
the spring. Air can be viewed as being composed of layers analogous
to such coils, with a sound wave propagating as layers of air
“push” and “pull” at one another much like the compression moving
down the spring.
Correct :D-The sound waves reach the right and left ear at different time points which determines the location of sound and further away a sound is ,less intense its sound waves are.
Without calces. how can the localive sound waves? The sound waves reach the left and rightears...
If a lightning occurred exactly 1 mile from your location how many seconds will it take for the sound waves created by the thunder to reach your ears at 343 m/s?
Two small loudspeakers emit sound waves of different frequencies equally in all directions. Speaker A has an output of 1.30 mW, and speaker B has an output of 2.00 mW. Two speakers A and B are represented as points which serve as the centers of concentric circles representing sound waves emanating from the speakers. The concentric circles about speaker A are spaced more closely together than the concentric circles about speaker B. The points lie along a horizontal line, and...
PHET Sound Simulation Purpose - To explore sound (a longitudinal wave) and how it can be modeled as a transverse wave Obtain com puter with PHET software on it. Get headphones if possible and plug into sound port. Open PHET simulations and find Sound and Waves simulations. Open the simulation called "Sound". There are 5 tabs. Listen to a Measure Two Source Interference Listen with Interference by Reflection Varying Air Pressure Single Source Open the one called listen to a...
question 4-7 4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 Hz, and that the wave is subject to the following initial conditions: at x 0 and t = 0: y =-1 cm, and, at x = 0 and t : ar = +20 cm/s (this is the velocity of the point on the rope at horizontal...
Races in athletics are started by the sound of a starting gun, traditionally located to one side of the first lane. But are runners disadvantaged if they are further away from the person holding the starting gun? Task Using algebra, investigate whether the distance from the starting gun will impact on a runner’s ability to win a race. Explore which runners would be most disadvantaged if the race was won by 0.1 seconds or 0.01 seconds. Useful information Runners...
Can you please explain all parts I meant to ask this question A block with a speaker bolted to it is connected to a spring having spring constant k = 24.0 N/m and oscillates as shown in the figure below. The total mass of the block and speaker is 3.00 kg, and the amplitude of this unit's motion is 0.500 m. The speaker emits sound waves of frequency 500 Hz. www (a) Determine the highest frequencies heard by the person...
0.48 12. Two astronauts are m apart in their spaceship. One speaks to the other. The conversation is transmined to earth via electromagnetic waves. The time it takes for sound waves to travel at 343 m/'s through the air between the astronauts equals the time it takes for the electromagnetic waves to travel to the earth. How far away from the Earth is the spaceship? (a) 2.30 m (b) 790 m (c) 4.2x10m (d) 6.9x10Fm (e) 4.5x1010 m 13. Two...
Learning Goal: To gain an understanding of constructive and destructive interference. Consider two sinusoidal waves (1 and 2) of identical wavelength ?, period T, and maximum amplitude A. A snapshot of one of these waves taken at a certain time is displayed in the figure below. (Figure 1) Let y1(x,t) and y2(x,t) represent the displacement of each wave at position x at time t. If these waves were to be in the same location (x) at the same time, they...
1) in a fit of physics rebellion, you throw an oscillator tuned to a frequency of 50 hz straight upward from a tall building. how does the frequency you hear change with time as the oscillator return to you. a) The frequency will be lower than 50 Hz but does not change with time. b) The frequency will be higher than 50 Hz but does not change with time. c) The frequency will be lower than 50 Hz and decrease...
QUESTION 5 "After exposing continuously an individual to a sound, during a period of time, how was the sound detected by the individual." louder the same lower not detected in vibrations QUESTION 6 "Choose the best cause for presbyopia, a condition at which becomes more and more difficult to focus on close-up objects." the lens becomes less elastic. the lens becomes more elastic. the ciliary muscle releases tension on the suspensory ligaments. suspensory ligaments stretch the lens. more convexity of...