Answer:
<em>Reason:- We use cotton to make the wick of a spirit lamp because cotton has thread strands which act like fine capillaries and help in drawing up a steady supply of oil in the lamp for burning by capillary action</em>
Explanation:
Answer:
O So you can ask questions about steps you do not understand.
Explanation:
One of the reasons why it is encouraged that the laboratory procedure must be read at the beginning of any type of experiment is familiarize the student with the experimental procedure. Also, questions that can help make the smooth running of the experiment to proceed can be cleared.
- It is to this regard that understanding laboratory procedures is very vital.
- Students must grasp the details of each steps of the experiment before proceeding with their investigation.
- Other critical information needed to set up the experiment can also be brought into the lime light.
The uses of fossil fuel causes:
- <em>A</em><em>l</em><em>l</em><em> </em><em>o</em><em>f</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>a</em><em>b</em><em>o</em><em>v</em><em>e</em>
<u>F</u><u>o</u><u>s</u><u>s</u><u>i</u><u>l</u><u> </u><u>f</u><u>u</u><u>e</u><u>l</u><u>s</u><u> </u><u>b</u><u>u</u><u>r</u><u>n</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>i</u><u>n</u><u>c</u><u>r</u><u>e</u><u>a</u><u>s</u><u>e</u><u>s</u><u> </u><u>i</u><u>n</u><u> </u><u>g</u><u>l</u><u>o</u><u>b</u><u>a</u><u>l</u><u> </u><u>t</u><u>e</u><u>m</u><u>p</u><u>e</u><u>r</u><u>a</u><u>t</u><u>u</u><u>r</u><u>e</u><u> </u><u>b</u><u>e</u><u>c</u><u>a</u><u>u</u><u>s</u><u>e</u><u> </u><u>i</u><u>t</u><u> </u><u>e</u><u>m</u><u>i</u><u>t</u><u>s</u><u> </u><u>g</u><u>r</u><u>e</u><u>e</u><u>n</u><u>h</u><u>o</u><u>u</u><u>s</u><u>e</u><u> </u><u>g</u><u>a</u><u>s</u><u>e</u><u>s</u><u>.</u><u> </u><u>A</u><u>n</u><u>d</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>e</u><u>x</u><u>t</u><u>r</u><u>e</u><u>m</u><u>e</u><u> </u><u>c</u><u>l</u><u>i</u><u>m</u><u>a</u><u>t</u><u>e</u><u> </u><u>c</u><u>h</u><u>a</u><u>n</u><u>g</u><u>e</u><u> </u><u>d</u><u>e</u><u>c</u><u>r</u><u>e</u><u>a</u><u>s</u><u>e</u><u>s</u><u> </u><u>b</u><u>i</u><u>o</u><u>d</u><u>i</u><u>v</u><u>e</u><u>r</u><u>s</u><u>i</u><u>t</u><u>y</u><u> </u><u>and</u><u> </u><u>last</u><u> </u><u>but</u><u> </u><u>not</u><u> </u><u>the</u><u> </u><u>least</u><u> </u><u>it</u><u> </u><u>increases</u><u> </u><u>pollution</u><u> </u><u>because</u><u> </u><u>burning</u><u> </u><u>of</u><u> </u><u>fuels</u><u> </u><u>emit</u><u> </u><u>gases</u><u> </u><u>like</u><u> </u><u>Carbon-dioxide</u><u> </u><u>etc</u><u>.</u><u>.</u><u>.</u><u>~</u>
<h2>Option 1 is correct option .</h2>
Explanation:
The velocity of sound depends upon temperature . The temperature is different at different altitudes .
The velocity of sound has no effect of pressure . Thus at different altitudes , if pressure is different , it makes no difference .
Therefore the speed of sound varies rapidly with altitude , due to variation of temperature .
It also depends on the nature of medium . which also varies with altitude .
Moreover we cannot get distance by dividing time interval with 3 .