Firefighters have been called to the scene of a warehouse fire. The battalion chief informs the crew that the warehouse is used to store cleaning fluids, which are highly flammable. What should the firefighters use to extinguish the fires with these types of fuels?


A.) Class A foams

B.) Class B foams

C.) water

D.) oxygen

ANSWER: B

Answer:

Option C (80 ohms) is the right answer.

Explanation:

The given values are:

Current,

I = 1.5 A

Voltage,

V = I20 V

As we know,

⇒  [tex]V=IR[/tex]

or,

The resistance will be:

⇒  [tex]R=\frac{V}{I}[/tex]

On substituting the values, we get

⇒      [tex]=\frac{120}{1.5}[/tex]

⇒      [tex]=80 \ ohms[/tex]

Explanation:

1140 miliohms.

resistance = resistivity×length /area

= 0.0000000171 ohms x 100 meters / 1.5 mm^2

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Answer:

thank you :)

Explanation:

B and D
hope this helped

B) feeder cables that is your answer

The correct option is d. Grounded bus.

The following information should be considered:

For the balanced loads, there should be the zero current.But for the unbalanced one there should be the current in the neutral wire. So connecting neutral to the ground in subpanel will permit the current and due to this there should be the risk of shocks. For preventing this, neutral bus should be completely isolated from the grounded bus.

Learn more: brainly.com/question/17429689

Answer:

The factors according to the given topic are summarized below.

Explanation:

The biggest aspect becomes G forces but instead if they are handled by that of the living organism.Coasters were already continually changing, becoming special than it's ever been and year by year they hit unprecedented levels of tremendous growth. Higher, more quickly, prolonged although innovative components have been utilized.

Answer:

Explanation:

This may be incomplete but here are some pairs that can be used to calculate all other parameters:

L and N

L and f-s

L and f-Ny

N and f-s

N and f-Ny

Answer:

d. reducing the amount of recourses spent on one want to spend more on another want

brainliest? plz!

Answer:

the answer is B. replacing one resource with another resource to satisfy a want

Answer:

true

Explanation: Fire extinguishers do need water buckets on sand on the other hand sand is also true so that means the awnser is true!

Answer:

Explanation:

A conservator with a(n) guardianship background and knowledge of foreign languages will have more job opportunities because they broaden the scope of work a conservator can undertake.

The Robot washes the dishes cause it programed to do so

Answer:

Switches control the flow of electricity in a circuit.

Answer:

switches

Explanation:

switches because it a device used to control electric circuit regarding whether current should flow or not.

The Earth's average temperature is about 15C but has been much higher and lower in the past.
There are natural fluctuations in the climate but scientists say temperatures are now rising faster than at many other times.
This is linked to the greenhouse effect, which describes how the Earth's atmosphere traps some of the Sun's energy.
Solar energy radiating back to space from the Earth's surface is absorbed by greenhouse gases and re-emitted in all directions.
This heats both the lower atmosphere and the surface of the planet. Without this effect, the Earth would be about 30C colder and hostile to life.
The greenhouse gas with the greatest impact on warming is water vapour. But it remains in the atmosphere for only a few days.
Carbon dioxide (CO2), however, persists for much longer. It would take hundreds of years for a return to pre-industrial levels and only so much can be soaked up by natural reservoirs such as the oceans.
Most man-made emissions of CO2 come from burning fossil fuels. When carbon-absorbing forests are cut down and left to rot, or burned, that stored carbon is released, contributing to global warming. The world is about one degree Celsius warmer than before widespread industrialisation, according to the World Meteorological Organization (WMO).
It says the past five years, 2015–2019, were the warmest on record.
Across the globe, the average sea level increased by 3.6mm per year between 2005 and 2015.
Most of this change was because water increases in volume as it heats up. However, melting ice is now thought to be the main reason for rising sea levels. Most glaciers in temperate regions of the world are retreating.
And satellite records show a dramatic decline in Arctic sea-ice since 1979. The Greenland Ice Sheet has experienced record melting in recent years.
Warmth shatters section of Greenland ice shelf
Satellite data also shows the West Antarctic Ice Sheet is losing mass. A recent study indicated East Antarctica may also have started to lose mass.
The effects of a changing climate can also be seen in vegetation and land animals. These include earlier flowering and fruiting times for plants and changes in the territories of animals.
The change in the global surface temperature between 1850 and the end of the 21st Century is likely to exceed 1.5C, most simulations suggest.
The WMO says that if the current warming trend continues, temperatures could rise 3-5C by the end of this century.
Temperature rises of 2C had long been regarded as the gateway to dangerous warming. More recently, scientists and policymakers have argued that limiting temperature rises to 1.5C is safer. There is uncertainty about how great the impact of a changing climate will be.
It could cause fresh water shortages, dramatically alter our ability to produce food, and increase the number of deaths from floods, storms and heatwaves. This is because climate change is expected to increase the frequency of extreme weather events - though linking any single event to global warming is complicated. As the world warms, more water evaporates, leading to more moisture in the air. This means many areas will experience more intense rainfall - and in some places snowfall. But the risk of drought in inland areas during hot summers will increase. More flooding is expected from storms and rising sea levels. But there are likely to be very strong regional variations in these patterns. Poorer countries, which are least equipped to deal with rapid change, could suffer the most.
Plant and animal extinctions are predicted as habitats change faster than species can adapt. And the World Health Organization (WHO) has warned that the health of millions could be threatened by increases in malaria, water-borne disease and malnutrition. As more CO2 is released into the atmosphere, uptake of the gas by the oceans increases, causing the water to become more acidic. This could pose major problems for coral reefs.
Global warming will cause further changes that are likely to create further heating. This includes the release of large quantities of methane as permafrost - frozen soil found mainly at high latitudes - melts.
Responding to climate change will be one of the biggest challenges we face this century.

Answer:

Life cycle analysis

Explanation:

Answer:

Cool song

Explanation:

Ur hot also

Answer:

True

Explanation:

Microstructure is the very small scale structure of a material, defined as the structure of a prepared surface of material as revealed by an optical microscope above 25× magnification. ...

Answer:

Microstructure is the very small scale structure of a material, defined as the structure of a prepared surface of material as revealed by an optical microscope above 25× magnification. ... These properties in turn govern the application of these materials in industrial practice.

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