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agasfer [191]
2 years ago
5

PLEASE HELP TOPIC - CONVECTION

Physics
1 answer:
STALIN [3.7K]2 years ago
5 0

Answer:

SO ANSWER AGRE AS FOLLOWS:

Explanation:

A. Wind is the movement of air, caused by the uneven heating of the Earth by the sun and the Earth's own rotation. Winds range from light breezes to natural hazards such as hurricanes and tornadoes.

B.At night, the roles reverse. The air over the ocean is now warmer than the air over the land. The land loses heat quickly after the sun goes down and the air above it cools too. ... This causes the low surface pressure to shift to over the ocean during the night and the high surface pressure to move over the land.

<h2><em><u>HOPE THIS IS CORRECT </u></em></h2>
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The train slows down at the railroad crossing. Is that acceleration, velocity, speed, of none of the above?​
Vlad [161]

Answer:

none of the above

Explanation:

im pretty positive this is the answer tell me if i am wrong please

4 0
3 years ago
Two stars, both of which behave like ideal blackbodies, radiate the same total energy per second. The cooler one has a surface t
Blizzard [7]

Answer:

Explanation:

Let hotter star has surface area of A . The cooler star would have surface area 9 times that of hotter star ie 9A , because its radius is 3 times hot star. Let temperature of hot star be T ₁.

Total radiant energy is same for both the star

Using Stefan's formula of black body radiation,

For cold star E = 9A x σ T⁴

For hot star E = A x σ T₁⁴

A x σ T₁⁴ = 9A x σ T⁴

T₁⁴ = (√3)⁴T⁴

T₁ = √3T .

b )

Let the peak intensity wavelength be λ₁ and λ₂ for cold and hot star .

As per wein's law

for cold star , λ₁ T = b ( constant )

for hot star  λ₂ √3T = b

dividing

λ₁ T / λ₂ √3T = 1

λ₂  / λ₁ =  1 / √3

7 0
3 years ago
Can someone help me with these problems? ​
Paladinen [302]
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3 0
1 year ago
What colors form the spectrum of visible light?
USPshnik [31]

Answer:

Explanation:

ROYGBIV

Red

Orange

Yellow

Green

Blue

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3 0
3 years ago
Read 2 more answers
An engineer examining the oxidation of SO 2 in the manufacture of sulfuric acid determines that Kc = 1.7 x 108 at 600 K:
kozerog [31]

Answer: p_{SO_2}=0.017atm

Explanation:

We are given:

K_c=1.7\times 10^8

Relation of K_p with K_c is given by the formula:

K_p=K_c(RT)^{\Delta ng}

Where,

K_p = equilibrium constant in terms of partial pressure = ?

K_c = equilibrium constant in terms of concentration

R = Gas constant = 0.0821\text{ L atm }mol^{-1}K^{-1}

T = temperature = 600K

2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)

\Delta ng = change in number of moles of gas particles = n_{products}-n_{reactants}=2-3=-1

Putting values in above equation, we get:

K_p=1.7\times 10^8\times (0.0821\times 600)^{-1}\\\\K_p=3.4\times 10^6

The chemical reaction follows the equation:

                 2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)

The expression for K_p for the given reaction follows:

K_p=\frac{(p_{SO_3})^2}{ p_{O_2}\times {(p_{SO_2})^2}}

We are given:

p_{SO_3}=300atm   p_{O_2}=100atm

Putting values in above equation, we get:

3.4\times 10^6=\frac{(300)^2}{100\times {(p_{SO_2})^2}}

p_{SO_2}=0.017atm

Hence, the partial pressure of the SO_2 at equilibrium is 0.017 atm.

3 0
3 years ago
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