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The horn must be loud enough to hear at a minimum distance of feet?
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Human ear can hear minimum and maximum?
20
What are the conditions necessary to hear echo?
The reflecting surface must be sufficiently smooth and shaped such that the sound is reflect back and not dispersed. Sound travels at approx 340 metres per second and the average human brain easily can distinguish sounds that are 1/2 second apart. That means the sound must travel at least 170 metres so that the reflecting surface must be half that distance away. While a greater distance will create a more distinctive echo, the strength of the returning sound fall off rapidly (at twice the square of the distance to the reflecting surface). In normal circumstances 170 metres (= approx 500 feet) is a good distance. A cave or convex reflecting surface will allow a greater distance.
Songs with yard feet or miles in them?
Santa Catalina sings about 26 miles. If you miss the train I'm on...you'll hear the whistle blow a hundred miles
Distance X time is equal to what?
(Distance) x (Time) is a number that has the dimensions of [ L T ]. It would be expressed in units such as "kilometer-hours" or "foot-seconds". It has no physical significance and is altogether quite meaningless. Which may be a big part of the reason that we never hear it used.
How long will the the first trumpet judgment last in the book of revelation?
There is no indication as to how long the first trump will last, but assuredly it will last long enough for all peoples of the world to hear it.
The horn must be loud enough to hear at a minimum distance of how many feet in California?
200 ft
How long distance can a lion hear?
a lion can at least hear up to about 7 feet away
A horn must be loud enough to hear within how many feet?
http://wiki.answers.com/Q/A_horn_must_be_loud_enough_to_hear_within_how_many_feet"
What is the minimum distance to get an echo?
Depends on the quality of the sound. The minimum distance to hear an echo will be partly based upon the observers ability to resolve different sounds (i.e. so that they can distinguish between the actual noise, and the arrival of the reflected sound - a little 100 year old lady may not be as good as a 15year old!). This will vary between observers, as their auditory reaction times vary In the perfect Physics world though: Assuming a sharp sound (like a gunshot) the minimum distance (d=vt) to hear distinct echo is 17.2m considering the speed of sound to be 344ms. In general the "minimum echo distance" is always equal to half a wavelength from the reflector.
What is the minimum distance of the obstacle from the source to hear an echo?
About 17 meters.It may slightly changes with speed of sound.this is because sound resumes in ear for 0.1s.
What is the minimum distance of echo?
Depends on the quality of the sound. The minimum distance to hear an echo will be partly based upon the observers ability to resolve different sounds (i.e. so that they can distinguish between the actual noise, and the arrival of the reflected sound - a little 100 year old lady may not be as good as a 15year old!). This will vary between observers, as their auditory reaction times vary In the perfect Physics world though: Assuming a sharp sound (like a gunshot) the minimum distance (d=vt) to hear distinct echo is 17.2m considering the speed of sound to be 344ms. In general the "minimum echo distance" is always equal to half a wavelength from the reflector.
Can you hear a plane at 5000 feet?
yes, you can hear planes at 35000 feet.
Do cats hear with their feet?
No, cats hear very well with their ears. They do not hear with their feet. They may also react to anything that causes the ground to rumble, and may feel that with their feet, but that is not the same as hearing with their feet.
What should be on your feet for when you hear it?
5 feet
How tall do have to be to ride the hulk?
As tall as he wants you to be. I hear he prefers girls 8-14, but with enough money can be bribed into anything.
When you hear it should hear it on your feet?
The answer is the National Anthem.
What Is The Origin Of Hear a pin drop?
On a railroad, a pin drops whenever cars couple together. Sometimes, if the engineer was moving carefully enough, he could hear the pin drop from hundreds of feet away.
