Question

13. Explain how CO2 is able to control fire
14. The sound from a mosquito is produced when it Vibrates its wings at an average
rate of 500 vibrations per second. What is the time period of the vibration?​

Answer 1

Explanation:

1.Carbon dioxide extinguishes work by displacing oxygen, or taking away the oxygen element of the fire triangle. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.

2.requency = 500 vibrations/second.

Time Period = (Time Taken)/ (Number of Oscillations)

= (1/500) = 0.002 sec.

Answer 2

Answer:

13.Carbon dioxide does not itself react to extinguish fire but it cuts the supply of oxygen by replacing or displacing it. Carbon dioxide covers the fire and cut-off the contact of oxygen and fuel. This is because carbon dioxide is heavier than the oxygen

14.ANSWER

Time period =

Frequency

1

=

500

1

=0.002s