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Blizzard [7]
3 years ago
5

A summary short about fire saftey

Physics
1 answer:
pentagon [3]3 years ago
3 0

Answer:

Fire safety is the set of practices intended to reduce the destruction caused by fire. Fire safety measures include those that are intended to prevent ignition of an uncontrolled fire, and those that are used to limit the development and effects of a fire after it starts.

Explanation:

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8. do the earth and the moon always cast shadows? what do we call the occurrence where the earth passes within the shadow of the
Oduvanchick [21]

Yes, they both cast shadows. A  eclipse occurs when one enters the shadow of the other.

Solar eclipse: Earth in shadow of Moon.

Lunar eclipse: Moon in shadow of Earth.

A solar eclipse is the result of one celestial body being completely or partially obscured by another celestial body along the line of sight of an observer. A solar eclipse occurs when the moon passes between the earth and the sun, obscuring all or part of the sun's disk. A lunar eclipse occurs when the Moon passes through the Earth's shadow, making the Moon's surface completely or partially obscured.

Learn more about solar:

https://brainly.in/question/5629706

#SPJ4

8 0
1 year ago
Please help asap. I'm terrible with atoms
11Alexandr11 [23.1K]
<span>Correct answer: more, smaller</span>
6 0
3 years ago
Read 2 more answers
At 20∘C20 ∘ C, the hole in an aluminum ring is 2.500 cm in diameter. You need to slip this ring over a steel shaft that has a ro
Feliz [49]

Answer:

238.75⁰C .

Explanation:

coefficient of linear thermal expansion of aluminum and steel is  23 x 10⁻⁶ K⁻¹ and 12 x 10⁻⁶ K⁻¹ respectively .

Rise in temperature be Δ t .

Formula for linear expansion due to heat is as follows

l = l₀ ( 1 + α x Δt )

l is expanded length , l₀ is initial length , α is coefficient of linear expansion and  Δt is increase in temperature .

For aluminum

l = 2.5 ( 1 +  23 x 10⁻⁶ Δt )

For steel

l = 2.506 ( 1 + 12 x 10⁻⁶ Δt )

Given ,

2.5 ( 1 +  23 x 10⁻⁶ Δt ) = 2.506 ( 1 + 12 x 10⁻⁶ Δt )

1 +  23 x 10⁻⁶ Δt = 1.0024 ( 1 + 12 x 10⁻⁶ Δt )

1 +  23 x 10⁻⁶ Δt = 1.0024   + 12.0288 x 10⁻⁶ Δt

10.9712 x 10⁻⁶ Δt = .0024

Δt = 218.75

Initial temperature = 20⁰C

final temperature = 218.75 + 20 = 238.75⁰C .

8 0
3 years ago
Will the centripetal force on the bob be different on the moon
ivanzaharov [21]
Hello
I think some details of the question are missing. However, I believe you are referring to a bob following some circular path. Therefore, the answer is "no": in fact, the centripetal force is equal on the earth and on the moon. 

Keep in mind that the centripetal force is given by
F=m \frac{v^2}{r}
where m is the mass, v the tangential velocity and r the radius of the circular motion. The mass m of the bob is the same on the earth and on the moon, so the centripetal force is the same.
5 0
3 years ago
How many "big c" calories does it take to raise the temperature of 2.00 l of water from 22.0 c to 40.0 c?
nignag [31]

given that

mass of water = 2 L = 2000 gram

now we can use

heat required to raise the temperature

Q = mC\Delta T

C = 1 cal/g C

\Delta T = 40 - 22 = 18

now from above formula

Q = 2000* 1 * 18

Q = 36000 Cal

so above is the heat required to raise the temperature

7 0
4 years ago
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