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Semenov [28]
3 years ago
12

When you look out the window you can see constantly moving air. Air is cycled in order to reach equilibrium. Answer the followin

g questions:
A. what are the two major characteristic that change when air is heated and cooled?
B. how does these characteristics change the movement of air?
C. what is the name of the cycle that develop during these changes?
D. why do the changes you describe in part B provide an example of a cycle?
Physics
2 answers:
svet-max [94.6K]3 years ago
5 0
So base on your question about the moving air and its is cycled in order to reach equilibrium the answer of the questions are the following 
A. what are the two major characteristic that change when air is heated and cooled? 
-temperature and molecular structure/ phase of the matter

<span>B. how does these characteristics change the movement of air? 
</span>-if the air has lower temp the possibility that it will become heavier than with the higher
<span>C. what is the name of the cycle that develop during these changes? Air cycle</span>
<span>D. why do the changes you describe in part B provide an example of a cycle? because of its molecular activity will increase</span>
Bezzdna [24]3 years ago
5 0

She's right you guys!!

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if 6.75g of oxide of lead was reduced to 6.12g of metal, calculate the empirical formula of the oxide​
Solnce55 [7]
Mass lost = weight of oxygen = 6.75 - 6.12 = 0.63 g

0.63 g / 16.0 g/mole = 0.0394 moles O
6.12 g / 207.2 g/mole = 0.0295 moles Pb

Ratio being roughly 3:4, the empirical formula is Pb3O4 (which is one of the mixed oxides of lead).
6 0
4 years ago
You are driving along the New York State Thruway in a line of cars all travelling at a constant speed of 108.5 km/hr. The car in
IgorC [24]

Answer:

Car first should be 30.13 m behind the second car.

Explanation:

Given that,

Constant speed = 108.5 Km/hr

Time = 1 sec

Let the distance covered by second car S and by first car S'

We need to calculate the distance covered by second car

Using equation of motion

S=ut-\dfrac{1}{2}at^2.....(I)

The distance covered by first car to avoid collision

S''=S'+S

Put the value into the formula

S'+S=ut+ut-\dfrac{1}{2}at^2...(II)

We need to calculate the distance covered by first car

Using equation (I) and (II)

S'=ut

Put the value into the formula

S'=108.5\times\dfrac{5}{18}\times1

S'=30.13\ m

Hence, Car first should be 30.13 m behind the second car.

7 0
3 years ago
What is the maximum kinetic energy of ejected electrons when photons of wavelength 300 nm hit a metal that has a work function o
Sonja [21]

Explanation:

Given that,

Wavelength of the photon, \lambda=300\ nm=3\times 10^{-7}\ m

Work function of the metal, \phi=1.13\ eV=1.81\times 10^{-19}\ J

We need to find the maximum kinetic energy of the ejected electrons. It can be calculated using Einstein's photoelectric equation as :

hf=E_k+\phi

E_k=hf-\phi

E_k=h\dfrac{c}{\lambda}-\phi

E_k=6.63\times 10^{-34}\times \dfrac{3\times 10^8}{3\times 10^{-7}}-1.81\times 10^{-19}

E_k=4.82\times 10^{-19}\ J

E_k=3.01\ eV

or

E_k=3\ eV

So, the maximum kinetic energy of the ejected electrons is 3 ev. Hence, this is the required solution.          

3 0
3 years ago
A particle experiences a constant acceleration for 12 second after starting from rest. If it travels a distance s1 in the first
pentagon [3]

Answer:

The last option is correct

ΔT1 = 4 sec       ΔT2 = 4 sec          ΔT3 = 4 sec

S = V0 t + 1/2 a t^2

S1 = 1/2 a t^2 = 8 a      where V0 is the speed at the start of the interval

During any interval (of 4 sec) the particle travels 1/2 a t^2 = 8 a    due to its acceleration - and you need to include the speed at the start of  the interval

S1 = 8a

S2 = 8 a + 8 a = 16 a

S3 = 16 a + 8 a = 24 a

Note: V2 = V1 + a t       for any interval

V2 - V1 = V1 + a t - V1 = a t

and a = (V2 - V1) / t = a   the speed increase is constant during the interval

7 0
2 years ago
A teacher used a Geiger-Muller(GM)tube to measure the background radiation in her laboratory.
nexus9112 [7]
It changes because radiation always differs in the atmosphere because of the nuclear plants and of pollution around us. Even though it is indoors.
5 0
3 years ago
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