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  1. ... requried to balance the increased air resistance to keep the object moving at constant speed. For example, given an object of volume V m3(=A.L, where...

  2. 1) reduce electricites. For example, schools could try to use fans instead of air conditioner during summer. 2) decrease fuel efficiency. For instance, schools...

  3. ...asthma and bronchial infections have soared in recent years due to reduced air quality 4. Health issues had increased due to the...

    分類:科學及數學 > 天氣 2015年03月30日

  4. ... the acceleration due to gravity After integration... is given in the following...http://www.engineeringtoolbox.com/ air -altitude-pressure-d_462.html Q:Is there an air buoyant force acting...

  5. ...due to the increasing resistance? The opening of the parachute gives an upward force to the skydiver because of air resistance. If we take the downward direction (i.e. the falling direction of...

  6. ... issue organization As an Indoor Air Quality IAQ and Water... - (Innotech Group) strive to provide consultations, services and...

    分類:社會及文化 > 語言 2007年01月14日

  7. ...reactant or indicator used. - Give explaination for each step if the...39; Here is an example of theoratical essay, ... related to their bong and structure...in a laboratory to show that air is necessary for ...

  8. Trapped air is air confined in an eclosed space. 2012-02-27 13:49:07 補充: Your suppl. question: You need to know the given condition under which the temperature increases. An increase of temperture may...

  9. ...the government plant more trees.(It help to absobe the carbon dioxide in the air ) -suguest the government to set up laws to limit the pollutants that produced by the...

    分類:社會及文化 > 語言 2010年12月15日

  10. 記得約十年新聞有報導過 以前因為水務條例不容許用食水作空調冷卻用途(以前香港食水珍貴,供應不穩定,供應穩定後無改例)。海水冷卻要近海才可行。其實以前很多工廠都偷偷用食水作空調冷卻的,你看以前工廠區後巷幾多水塔就知。現在工業北移所以小了。相反商業大廈因外觀問題...

    分類:科學及數學 > 工程學 2007年04月28日