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Foam extinguishers : If the burning liquid is in a container the jet should be directed at the inside edge of the vessel or at a vertical surface in order to break the jet and allow the foam to build up and spread across the surface of the liquid (Figure). If this is not possible, the correct procedure is to stand well back (perhaps as far as 6 or 7 m) and to direct the jet with a gentle sweeping movement to allow the foam to drop down and form a layer on the surface of the liquid (Figure). Do not aim the jet directly into the liquid as this will drive the foam under the surface where it will be ineffective in extinguishing the fire and may spread the fire by splashing the liquid on the surroundings.
Figure: Use of foam extinguisher-I. Fig.12.4: Use of foam extinguisher-11.
equilibrium, Physics what is the effect of torque and equilibrium on taps, doors,handle bars and bicycles??
Use of natural resources: you studied about various natural resources such as land, water, soil, minerals etc. You know that these resources are limited and precious. Therefore
2. Explain why KB has a low level of serum ketoacids? (4 points)
What are the Factors Affecting Soil Formation Parent materials formed due to weathering of rocks are transported from the place of their origin and re-deposited before they ar
QUESTION 1 (a) What is the main objective of the Occupational Safety and health Act 2005? (b) State 6 other objectives. Briefly describe them. QUESTION 2 (a) What cr
Calculate the power of a light bulb that uses 36J of electrical energy in 6 seconds.
To show that soil contains air:- Place some soil in a glass jar or bottle and slowly pour water over it. Observe the air bubbles that increase by the water from the soil.
what is the solution of the water polution
Ask quesExplain that your intention is to investigate a variety of combinations of pipe material, insulation material and size which you could potentially consider when deciding on
Explain Maximum Tubular Secretory Capacity The maximum rate at which tubules can transport a substance from the blood vessel to the lumen or from the lumen to the blood vessel
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