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homework

 
 
Reply Wed 13 Nov, 2013 01:44 pm
if a whistle produces a sound of 50,000 vibrations a second, what is the frequency of the sound in hertz?
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Type: Question • Score: 5 • Views: 486 • Replies: 12
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contrex
 
  1  
Reply Wed 13 Nov, 2013 02:00 pm
@chloewashere1207,
chloewashere1207 wrote:

if a whistle produces a sound of 50,000 vibrations a second, what is the frequency of the sound in hertz?


You really need to ask this?
chloewashere1207
 
  -1  
Reply Wed 13 Nov, 2013 02:24 pm
@contrex,
Please give me the answer
timur
 
  1  
Reply Wed 13 Nov, 2013 02:27 pm
@chloewashere1207,
One Hertz is a "vibration" per second..
0 Replies
 
contrex
 
  1  
Reply Wed 13 Nov, 2013 02:57 pm
@chloewashere1207,
chloewashere1207 wrote:

Please give me the answer


Are you sure this course is right for you?

By the way, it's Hertz with a capital H.
dalehileman
 
  0  
Reply Wed 13 Nov, 2013 03:00 pm
@chloewashere1207,
We suppose Chloe the whistle represents a sinewave. A more irregular sound would be found at other frequencies besides 50 kilohertz, for instance clicking of the rattle

Quote:
By the way, it's Hertz with a capital H.
Con are you quite sure

https://www.google.ca/#q=when+is+hertz+capitalized


Chloe without revealing anything critical to your ID I wonder if you could tells us about yourself; age, sex (presumably f), ed., nat'l, fam, motives, etc
contrex
 
  1  
Reply Wed 13 Nov, 2013 03:06 pm
@dalehileman,
dalehileman wrote:

Quote:
By the way, it's Hertz with a capital H.
Con are you quite sure


When it's a rental car making the sound?

(You're right, it's the abbreviation that has the capital H.)


roger
 
  1  
Reply Wed 13 Nov, 2013 03:11 pm
@contrex,
That brings up an old question that I've never gotten a solid answer to. Should more or less generic words that derive from proper names always be capitalized, even though they are what I would call generic? The word Diesel comes to mind though there are many others.

Thanks in advance.
timur
 
  1  
Reply Wed 13 Nov, 2013 03:12 pm
@contrex,
Who cares, anyway?

That frequency is inaudible for humans.
roger
 
  1  
Reply Wed 13 Nov, 2013 03:41 pm
@timur,
Maybe the tree in the forest didn't really fall, then.
timur
 
  1  
Reply Wed 13 Nov, 2013 03:44 pm
@roger,
If nobody is there to acknowledge it, it's not real. Wink
ossobuco
 
  1  
Reply Wed 13 Nov, 2013 03:47 pm
@timur,
Then no one will get hurtsie.
0 Replies
 
contrex
 
  1  
Reply Wed 13 Nov, 2013 03:51 pm
@roger,
roger wrote:

That brings up an old question that I've never gotten a solid answer to. Should more or less generic words that derive from proper names always be capitalized, even though they are what I would call generic? The word Diesel comes to mind though there are many others.

Thanks in advance.


I don't know if there is a "rule" about Diesel, Zeppelin etc, but as for units of measure, in English, French and Spanish that I know of, the units are deemed to be common (not proper) nouns. Before 1948, the writing of metric quantities was haphazard. In 1948, the ninth Comité International des Poids et Mesures approved the first formal recommendation for the writing of symbols in the metric system when the basis of the rules as they are now known was laid down. Names of units follow the grammatical rules associated with common nouns (e.g., newton, hertz, pascal), even when the symbol for the unit begins with a capital letter. This also applies to "degrees Celsius", since "degree" is the unit. In German, however, the names of units, as with all German nouns, start with capital letters. I don't know about other languages.
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