A construction worker taps her hammer on one end of a steel bridge. Her coworker places their ear against the opposite end of the steel bridge and hears the hammer tapping. If the bridge is 2970 meters long and it takes .5 seconds for the tapping to cross from one end to the other, how fast does sound travel in the steel bridge? O 979 m/s O 2450 m/s O 6120 m/s O 5940 m/s

Q: A spaceship is approaching a space station at a speed of 1.95 x 105 m/s. The space station emits…

A: Write the given values of the problem- speed(u) u=1.95×105 ms frequency of source(fs)fs=5.99×1014 Hz

Q: You may use a calculator. A 5.0 m solid iron rod is at 25°C. How long would it take sound to move…

A: Write the given values with the suitable variables. L=5 mT=25 °C Here, L is the length and T is the…

Q: At a factory, a noon whistle is sounding with a frequency of 298 Hz. As a car traveling at 85.0 km/h…

A:

Q: An ambulance moving with a speed of 31.0 Km/h is  emitting a sound of 850 Hz as it approaches a…

A: speed of ambulance is vs 31.0 km/h v s= 31.0 x 5/18 m/s . v s= 8.61 m/s . The frequency of sound…

Q: A group of hikers hears an echo 2.00 s after shouting. How far away is the mountain that reflected…

A: Given: time after which echo is heard, t = 2.0 s  speed of sound wave, v = 346 m/s

Q: The average person can hear sound waves ranging in frequency from 20 Hz to 20 kHz. Determine the…

A:

Q: A source emits sound with a characteristic frequency of 545 Hz. Calculate the observed frequency and…

A:

Q: The speed of sound in vacuum at 250 degree C is: O a. 1.17 m/s O b. 200.275 m/s O C. 386.87 m/s O d.…

A:

Q: There was an accident, and NASA engineers are trying to sort out where two of their Mars Rovers,…

A: Tango measures speed of air which is less than that measured by Foxtrot. When the temperature of…

Q: A spaceship is approaching a space station at a speed of 3.30 ✕ 105 m/s. The space station has a…

A: in this problem, the given data-   the speed of spaceship is v=3.30×105m/s frequency of light f=…

Q: A dolphin located in sea water at a temper- ature of 26°C emits a sound directed toward the bottom…

A: Given information: Here, d is the distance of the bottom level of the ocean from the current…

Q: For sound waves propagating in a specific medium, one of the following is true: O a. The intensity…

A: For sound wave propagating in a specific medium, the intensity is inversely proportional to the…

Q: A police siren has a frequency of 500 Hz. An observer moving East with 20 m/s heard it as with…

A: This problem is related to Doppler effect of sound. It states that if the source or the observer or…

Q: Mr. Alaniz is on the edge of a majestic canyon with his guitar as he sings a power ballad of the…

A: Data Given: Speed of sound in air (V) = 343 m/s Time (t) = 1.41 seconds

Q: A stationary bat sends a sound wave that travels at a speed of 344m/s. How much time will it take…

A: Velocity of A with respect to B is given B VAB = VA - VB

Q: Apolice car emits sound with a frequency of 900.0 Hz is moving at 400 m/s towards an observer moving…

A: Given: The frequency of the sound is 900 Hz. The speed of the police car is 40.0 m/s. The speed of…

Q: An airplane traveling at v = 159 m/s emits a sound of frequency 5.00 kHz. At what frequency does a…

A: Traveling speed of aeroplane v = 159 m/s Frequency of sound f = 5 KHz = 5000 Hz Speed of sound = 344…

Q: A car moving at 35 m/s approaches a stationary whistle that emits a 220 Hz sound. The speed of sound…

A: Given that:- f0=Observer frequency of sound=?fs=Actual frequency of sound waves =220 Hzv=Speed of…

Q: The horn in your car produces sound with a frequency of 80 Hz. While sitting at rest, you honk your…

A:

Q: There was an accident and NASA engineers are trying to sort out where two of their Mars Rovers,…

A: Recall VαTSpeed of sound is proportional to square root of temperature.

Q: An airplane traveling at v = 164 m/s emits a sound of frequency 5.90 kHz. At what frequency does a…

A:

Q: A spaceship is approaching a space station at a speed of 1.60 ✕ 105 m/s. The space station has a…

A: For doppler effect of lightf=f01+β1-β when source is moving towards observer

Q: A police car with its siren on approaches a stationary observer at a speed of 33 m/s. The frequency…

A:

Q: 2. A 2.0 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal…

A: frequency from source ϑ=2 MHz, Beat frequency ∆ϑ=85 s-1=85 Hz and speed of sound Vs=1500 m/s We need…

Q: A police car with its siren on approaches a stationary observer at a speed of 33 m/s. The frequency…

A:

Q: sound waves in air ( v = 343 m/s ) has a frequency of 320 Hz. In ocean water, its wavelength is…

A: Speed of sound in air  Va = 343 m/s fa = 320 Hz  Wavelength in the sea water is λ = 4.875 m Let the…

Q: You are on the relaxing on the beach (not moving). A speedboat honking its 450 Hz horn is coming…

A:

Q: If the velocity of blood flow in the aorta is about (0.32 m/s), what is the pulse frequency you…

A: The following problem lies in the topic of Doppler's effect and related to beat frequency. It is…

Q: A supersonic airplane has a speed of 1.5 times the speed of sound. If an observer is 5 km from the…

A: A supersonic airplane has a speed of 1.5 times the speed of sound. If an observer is 5 km from the…

Q: An object explodes and its sound wave propagates through the sea where the temperature is 37°C. It…

A: given,temperature, T1=37°C =37°+273 K                        =310 KT2=30° =30+273T2=303 K

Q: Two small speakers emit sound waves of different frequencies equally in all directions. Speaker A…

A:

Q: The speed of sound in vacuum at 100-degree C is: O a. 1.17 m/s O b. 200.275 m/s O c. 386.87 m/s O d.…

A: The speed of sound in vacuum needs to be told.

Q: An airplane traveling at half the speed of sound emits a sound of frequency 4.52 kHz. (a) At what…

A: Given data: Frequency of the sound, fs=4.52 kHz = 4.52×103 Hz Let the speed of sound be v,…

Q: There was an accident and NASA engineers are trying to sort out where two of their Mars Rovers…

A: In this question we have to determine the location of landing of the rovers of NASA based on the…

Q: How far away is a lightning strike if you hear the thunderclap 6.0 s after you see the lightning…

A: Given- time between lightning  and thunderclap , t = 6.0 s speed of sound , vsound = 340 m/s speed…

Q: What is the velocity of sound in dry air for a temperature change of 370C? Group of answer choices…

A: Given, Temperature change of 37° C  We know that velocity of sound at 0° C is 331 m/s . And velocity…

Q: A sound wave has a speed of 340 m/s and a wavelength of 15 m. What is the frequency of the sound…

A:

Q: A light wave and sound wave travelling through air both have the same frequency (4000 Hz). Which…

A: Given data:  Light wave and sound wave have same frequency Frequency (f) = 4000 Hz Speed of sound…

Q: A wave has a speed of 1700 m/s and a frequency of 75 Hz. What is its approximate wavelength?   a.…

A: speed = v = 1700 m/s Frequency = f = 75 Hz The relation between the speed, frequency and the…

Q: An echocardiogram can measure the Doppler shift of the sound reflected from flowing blood. A sound…

A:

Q: A 2.00 MHz sound wave travels through a pregnant woman’s abdomen and is reflected from the fetal…

A:

Q: An ambulance whose siren emits a sound wave of frequency 800.0 Hz passes you while you are standing…

A: Frequency of siren = 800 HzObserved frequency of siren = 715.8 HzSpeed of observer = 0 m/s (at rest)…

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.