What is necessary when applying fire fighting foam?

What is necessary when applying fire fighting foam? This means that before being used, they must be proportioned (mixed with water) and aerated (mixed with air). Four elements are necessary to produce a quality foam blanket. These elements include: foam concentrate, • water, • air, and • aeration (mechanical agitation). How do you make mechanical […]

What is ideal source voltage?

What is ideal source voltage? By definition, an ideal voltage source is a two-terminal element with the property that the voltage across the terminals is specified at every instant in time. This voltage does not depend on the current through the source. That is, any current in any direction could possibly flow through the source. […]

Are mice secondary consumers?

Are mice secondary consumers? The mouse is the secondary consumer because it eats the grasshopper, which is the primary consumer. What would happen if secondary consumers were removed from an ecosystem? Secondary consumers are an important part of the food chain. They control the population of primary consumers by eating them for energy. If there […]

How long does it take to break down a diaper?

How long does it take to break down a diaper? 500 years Do diapers ever break down? For decomposition, disposable diapers must be exposed to sunlight and oxygen. These diapers do not decompose well in landfills. Almost more than 500 years are required for disposable diapers to decompose. Millions of tons of untreated plastic waste […]

What oils can spontaneously combust?

What oils can spontaneously combust? Carbon-based animal or vegetable oils, such as linseed oil, cooking oil, cottonseed oil, corn oil, soybean oil, lard and margarine, can undergo spontaneous combustion when in contact with rags, cardboard, paper or other combustibles. Can cooking oil spontaneously combust? Most people don’t realize cooking oil is moderately to highly susceptible […]

What are the route surveys?

What are the route surveys? The term route survey refers to surveys necessary for the location and construction of lines of transportation or communication that continue across country for some distance, such as highways, railroads, open-conduit systems, pipelines, and power/telecom lines. What are the two basic measurement involved in surveying? The five common types of […]

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