Bats use echolocation to navigate and find food by emitting sound waves that are reflected off...

Bats use echolocation to navigate and find food by emitting sound waves that are reflected off their surroundings. If something nearby is moving, the reflected wave will return to the bat with a different frequency. Take the temperature of air to be 18 °

a. A bat is hanging from the roof of a cave and emits a sound pulse every 0.6 seconds trying to find a bug to eat. If it takes 2.1 seconds for a pitch of 1.61 Hz to return, how far away is the bug and what is its velocity?

b. How fast must the bat fly towards this bug to receive a pitch two octaves higher than its own emitted pitch?

c. Flying at this speed, how long does it take for the bat to catch the bug?
Note: you will need to utilize relative velocity and take into account the time it takes for the sound to return to the bat before it takes off

d. Is this reasonable for a regular bat or do we need a mutant bat?

Expert Solution

genius_generous answered 2 years ago

Bats are not blind, but they can hunt in complete darkness, using ultrasonic sound waves to...

Bats are not blind, but they can hunt in complete darkness, using ultrasonic sound waves to detect both the position and the motion of their prey. (“Ultrasonic” means at a higher frequency than humans can hear. “Supersonic” means faster than the speed of sound.) High-intensity, high-frequency sound pulses are emitted from their snouts, and they hear echoes from sound waves reflected from the prey. This process is known as echolocation. a) Suppose the friendly and graceful bat pictured above tries...

Two speakers spaced emitting identical sound waves in phase with each other of wavelength 1.00 m...

Two speakers spaced emitting identical sound waves in phase with each other of wavelength 1.00 m are spaceced 5.00 m from eachother. At what minimal distance (in m) from one of them should an observer stand to hear almost nothing (the first minimum)(__________)? The first maximum after this minimum (__________)? Second minimum (__________)? Second maximum (__________)? Third minimum (__________)? Third maximum (__________)? How many minima overall can be observed (__________)? How many maxima (__________)?

When a sound wave travels directly toward a hard wall, the incoming and reflected waves can...

When a sound wave travels directly toward a hard wall, the incoming and reflected waves can combine to produce a standing wave. There is an antinode right at the wall, just as at the end of a closed tube, so the sound near the wall is loud. You are standing beside a brick wall listening to a 80Hz tone from a distant loudspeaker. How far from the wall must you move to find the first quiet spot? Assume a sound...

Use Huygens' Principle to explain how waves propagate, why incident and reflected waves are equal angles,...

Use Huygens' Principle to explain how waves propagate, why incident and reflected waves are equal angles, and why light changes direction when it refracts

Like all our lab exercises, the waves and sound lab will use a PhET simulator. Some...

Like all our lab exercises, the waves and sound lab will use a PhET simulator. Some of these simulators require you to enable Java or Flash. You can download and use the simulator on your desktop, or for some labs you can run it in your browser. Preferred browser settings and system requirements can be found at the “Running Sims” FAQ: https://phet.colorado.edu/en/help-center/running-sims (Links to an external site.) For this lab, we’ll use the “Sound Waves” simulator: https://phet.colorado.edu/en/simulation/legacy/sound (Links to an external...

((marketing in Healthcare)) 7-In terms of off-label use, Food and Drug Administration regulations: A. have not...

((marketing in Healthcare)) 7-In terms of off-label use, Food and Drug Administration regulations: A. have not addressed the issue of off-label benefits. B. prohibit promotion of off-label benefits. C. allow companies to promote off-label benefits if they specifically state in the advertisements the drug was not tested for that specific condition. D. allow for promotion of its benefits. 8- True or False? The “service recovery paradox” shows it is good for a company to have service failure. True False 9-...

Prosimians (lemurs, lorises, and tarsiers) use their sense of smell to find food, have a pronounced...

Prosimians (lemurs, lorises, and tarsiers) use their sense of smell to find food, have a pronounced snout, are quadrupedal, and have a long tail used for balance. Apes have a flattened face, no tail, use their sight for finding food, and are quadrupedal. Humans are bipedal, use sight to find food, have a flattened face, and have no functional tail. Monkeys have a flattened face, use their eyesight to find food, are quadrupedal, and have a functional tail. If the...

Sketch the graph off by hand and use your sketch to find the absolute and local maximum and minimum values of f.

Sketch the graph off by hand and use your sketch to find the absolute and local maximum and minimum values of f. (Enter your answers as a comma-separated list. If an answer does not exist. enter DNE.) f(x) = 1/4(7x - 1), x≤3 absolute maximum value _______ absolute minimum value _______ local maximum values) _______ local minimum values) _______

Question