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Yakvenalex [24]
9 months ago
14

this problem occurs in petroleum firefighting when fire streams are applied to the burning liquid surface at such an angle that

hot and / or burning oil is forced over the edge of the tank. the oil then flows down the side of the tank and you are now confronted with a fire on the ground as well as the one in the tank. this best defines which problem?
Physics
1 answer:
shutvik [7]9 months ago
7 0

Petroleum has less density than water. So, when fire streams are applied to the burning liquid surface at such an angle that hot and / or burning oil is forced over the edge of the tank, the oil then flows down the side of the tank and you are now confronted with a fire on the ground as well as the one in the tank.

<h3>What are the reasons not to use fire streams during deal with  burning oil?</h3>

When you spray water on a regular fire, you're attempting to lower the flame's temperature and contain the fire.

Fuel for an oil fire is oil. Temperature and oxidizer are present in a fire (oxygen). Due to the fact that oil is lighter than water, an explosion may result if it floats above water while water sinks beneath oil.

Consequently, water shouldn't be used to put out oil fires.

Learn more about density here:

brainly.com/question/15164682

#SPJ1

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Please help Need good grade
ivann1987 [24]

Answer:

The other angle is 120°.

Explanation:

Given that,

Angle = 60

Speed = 5.0

We need to calculate the  range

Using formula of range

R=\dfrac{v^2\sin(2\theta)}{g}...(I)

The range for the other angle is

R=\dfrac{v^2\sin(2(\alpha-\theta))}{g}....(II)

Here, distance and speed are same

On comparing both range

\dfrac{v^2\sin(2\theta)}{g}=\dfrac{v^2\sin(2(\alpha-\theta))}{g}

\sin(2\theta)=\sin(2\times(\alpha-\theta))

\sin120=\sin2(\alpha-60)

120=2\alpha-120

\alpha=\dfrac{120+120}{2}

\alpha=120^{\circ}

Hence, The other angle is 120°

6 0
3 years ago
"Force is applied to an object and the object is moved over a distance in the same direction of the applied force" is the defini
DaniilM [7]
I believe this is gravitational force

8 0
3 years ago
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What is the displacement of the armadillo between 0s and 24s ?
Ann [662]

Answer:

Displacement: 6 meters

Distance: 24 meters

Explanation:

4 0
2 years ago
A bungee jumper feels weightless as she falls toward the earth.what accounts for her weightless feeling when she fall freely?1.
Ann [662]

The feel of weight comes due to the normal reaction force given by the support. Hence, the condition of weightlessness is when the normal reaction force becomes zero. So, during free fall there is no support which can provide the normal reaction. Hence, the bungee jumper feels weightless as she falls towards the earth because of the lack of support force that balances gravity.

Hence, the answer is 3.

8 0
3 years ago
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The black board appears black because:
marishachu [46]

Answer:

I think its C All visible light wavelengths (ROYGBV) are absorbed by the board

8 0
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