Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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Chapter 2, Problem 56P
To determine
The distance between bat and cave when bat received the echo.
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A stone is dropped (from rest) into a deep well. The splash in the water below is heard 4.2 seconds after it is released (when it starts falling from the top of the well). What is the depth of the well? Ignore air resistance and assume the speed of sound is 343m/s
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Chapter 2 Solutions
Physics for Scientists and Engineers, Vol. 1
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- On February 15, 2013, a superbolide meteor (brighter than the Sun) entered Earth's atmosphere over Chelyabinsk, Russia, and exploded at an altitude of 25.75km. Eyewitnesses could feel the intense heat from the fireball, and the blast wave from the explosion blew out windows in buildings. The blast wave took approximately 5minutes 30 seconds to reach ground level. (a) What was the average velocity of the blast wave? b) Compare this with the speed of sound, which is 343 m/s at sea level.arrow_forwardA supersonic jet flying at 20 m/s is accelerated uniformly at a rate of 23.1 m/s² for 19 seconds. (a) What is the jet's final velocity? (b) The speed of sound is 331 m/s in air. How many times the speed of sound is the jets final speed? A new type of gun is being developed by engineers. The gun will be used to launch a rocket as if they were bullets. One of the guns can give a small object a velocity of 5 km/s moving it through only 10 cm. a. What acceleration does the gun give this object? meidong a b. Over what time interval does the acceleration take place?arrow_forwardA soccer player kicks a rock horizontally off a cliff 48.0 m high into a pool of water. If the player hears the sound of the splash 3.30 s later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s. 18.7 m/s O 10.6 m/s 24.1 m/s 0 m/sarrow_forward
- V6arrow_forwardWyle E. Coyote hears a constant “Beep! Beep!” from around the corner of a cliff. Thinking it might be the Road Runner, he scampers up to speed and runs towards the sound to the East. On coming around the corner, he sees that it is not the Road Runner, but a truck coming towards him towards the West. The speed of the truck is 25 m/s. The speed of the Coyote is 100 m/s. The Coyote hears a frequency of 5500 Hz. The temperature of the air is 300 K. The mass of the truck is 1500 kg. The mass of the Coyote is 90 kg. Assume the air is an ideal gas with γ = 1.40 and the air molecules have a mass of 4.8*10-26 kg. The Boltzmann constant is k = 1.38*10-23 J/K. a. What is the speed of sound in this air? b. What is the original frequency of the horn on the truck? c. Assuming a perfectly inelastic collision, what is the final speed and direction of the truck, Coyote conglomerate (ignore any friction with the road)?arrow_forwardA "rock" is dropped from the top of a cliff of unknown height. The sound of the impact below is heard 2.7 seconds after its release. Speed of sound is 340 m/s. What's the height of the cliff?arrow_forward
- Sound travels at 340 m/s. How long does it take the sound of a starter's pistol shot to travel 1.0 x 102 m? The Concorde, supersonic airliner cruises at 2500 km/h. How long does it take to fly from New York City to London England; a distance of 5150 km?arrow_forwardNuclear explosions cause a blast wave, a high-pressure shock wave generated by the heat from the fireball. These shock waves can travel in air at an average speed of 738 mph. (1 mile = 1609 meters). If a nuclear weapon in detonated in Pittsburgh, how far will the blast wave have traveled from the location of detonation 2.39 s after the explosion? (Give your answer in meters)arrow_forward(a) A soccer player kicks a rock horizontally off a 44 m high cliff into a pool of water. If the player hears the sound of the splash 3.19 s later, what was the initial speed given to the rock (in m/s)? Assume the speed of sound in air is 343 m/s. m/s (b) What If? If the temperature near the cliff suddenly falls to 0°C, reducing the speed of sound to 331 m/s, what would the initial speed of the rock have to be (in m/s) for the soccer player to hear the sound of the splash 3.19 s after kicking the rock? m/sarrow_forward
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