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vagabundo [1.1K]
3 years ago
14

The atmospheric temperature decreases when snow starts melting because the snow releases thermal energy from the atmosphere to m

elt. Answers
Physics
2 answers:
Umnica [9.8K]3 years ago
6 0

Answer:

The thermal energy gets absorbed!

Hope this helps :))

Explanation:

Sergeeva-Olga [200]3 years ago
5 0

Answer:

This assertion is false

Explanation:

It can be a said that when snow melts to liquid, then at that phase certain amount of energy was needed to change it from its solid state to liquid. The energy needed is given as:

Q=mL

Where m is the mass of snow.

L is latent heat of fusion.

So when there is the melting of snow from solid to liquid, thermal energy gotten from the surrounding gets absorbed so as to convert it into liquid phase.

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Suppose that a siren makes a sound reaching 120 decibels, but a wolf’s howl only reaches 90 decibels. 120 dB is how many times l
MakcuM [25]

Answer:

I₁/I₂ = 1000

Thus, the sound of siren is 1000 times louder than the sound of wolf's howl.

Explanation:

First, we need to calculate the intensity of both the sounds. The formula for sound level is given as:

L = 10 log[I/I₀]

where,

L = Sound Level in dB

I = Intensity of sound

I₀ = Reference intensity = 10⁻¹² W/m²

<u>FOR SOUND OF SIREN:</u>

L = 120 dB

I = I₁ = ?

Therefore,

120 = 10 log[I₁/10⁻¹²]

log[I₁/10⁻¹²] = (120)/10

log[I₁/10⁻¹²] = 12

I₁/10⁻¹² = 10¹²

I₁ = (10¹²)(10⁻¹²)

I₁ = 1

<u>FOR SOUND OF WOLF'S HOWL:</u>

L = 90 dB

I = I₂ = ?

Therefore,

90 = 10 log[I₂/10⁻¹²]

log[I₂/10⁻¹²] = (90)/10

log[I₂/10⁻¹²] = 9

I₂/10⁻¹² = 10⁹

I₂ = (10⁹)(10⁻¹²)

I₂ = 10⁻³

Now, we divide the intensities:

I₁/I₂ = 1/10⁻³

I₁/I₂ = 10³

<u>I₁/I₂ = 1000</u>

<u>Thus, the sound of siren is 1000 times louder than the sound of wolf's howl.</u>

4 0
3 years ago
This is Yolanda's desk. What could Yolanda do to increase the amount of force needed to change the motion of the desk?
Stella [2.4K]

Yolanda might put more items to the desk to make it heavier, requiring more force.

We need to learn more about the force acting on an object in order to locate the solution.

<h3>How can the force that is required to modify the motion be increased?</h3>
  • We are aware that the word for force is,

                            F=ma

where m denotes the object's mass and an its acceleration

  • There are two ways to increase the force required to alter the motion of the table.
  • One is to increase the mass, and the other is to accelerate it more quickly.
  • Otherwise, there will be a lot of friction between the surfaces, making it difficult to move without exerting a lot of force.

We can infer from this that Yolanda could add items to the desk to increase its mass, necessitating the use of additional force.

Learn more about the force here:

brainly.com/question/4075805

#SPJ1

8 0
2 years ago
What is da answer please i need help
jolli1 [7]

Answer:

Air and water i think

Explanation:

Cause Air =25% and water=25% so that equals 50%

8 0
3 years ago
William finds a piece of pure iron in his garden. After a few days, the iron begins to rust. What are the two types of substance
nordsb [41]
Answer: an element; a compound
A compound is a molecule with at least two kinds of atoms. Since iron is only containing Fe then it shouldn't be a compound.
After iron got rust reaction, it will have oxygen make it become iron oxide. The iron oxide having Fe and O so it is a compound.
8 0
3 years ago
Two students are on a seesaw. Student B is bigger than student A, so the seesaw is not balanced. How could the seesaw be bounced
DIA [1.3K]
With another person on student A’s side. I’m sorry if I wasn’t able to help. Im trying my best from the information given. :)
3 0
2 years ago
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