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tensa zangetsu [6.8K]
3 years ago
6

Which segment shows the substance changing from a gas to a liquid

Physics
2 answers:
STALIN [3.7K]3 years ago
8 0

Answer:

Y-X

Explanation:

- For any substance, solid is the state with least temperature (because the particles have less energy: in fact, they are bond together, so they are not free to move), gas is the state with highest temperature (because particles have more energy, since they are totally free to move), while liquid state lies in the middle.

- In the graph, we can therefore associate U with the solid state (least temperature), W with the liquid state, and Y with the gas state (largest temperature).

- The section labelled with V corresponds to the solid-liquid transition, where the temperature remains constant (during phase transitions, temperature does not change). Similarly, the section labelled with X corresponds to the liquid-gas transition.

- The problem is asking us for the segment representing the change from gas to liquid. According to all the things we have written above, we can say that this is represented by the Y-X segments. In fact, in Y the substance is still a gas: by removing heat, the temperature decreases (we are going towards the left in the graph), until we reach segment X, which represents the transition from the gas to liquid state.

Evgesh-ka [11]3 years ago
6 0
The answer would be w-x 
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Answer: Yes, on many slate-roofed homes as temperatures change, such as cooling at night or heating during the day, thermal expansion or contraction of the slates may cause movement that in turn causes snapping, popping, or cracking noises, even bangs and clanks or clicks from the roof.

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Two pieces of amber are hung from threads. Piece A is charged by rubbing piece A with fur. Piece B is charged by rubbing piece B
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Answer:

ieces A and B must also have the same type of charges

Explanation:

In electrostatics, charges of the same sign repel and charges of different signs attract.

If we apply this to our case, we have that part A and C repel each other, therefore they have the same type of charge.

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3 years ago
amping equipment weighing 6.0 kN is pulled across a frozen lake by means of ahorizontal rope. The coecient of kinetic friction i
Harman [31]

Answer:

Work done = 422.45 kJ

Explanation:

given,                                  

weight of equipment = 6 kN      

coefficient of kinetic friction = 0.05          

distance up to which it is pulled = 1000 m

constant acceleration = 0.2 m/s²                    

Work done by the camper = ?                

actual acceleration acting a'      

m a = m a' - μ mg            

a' = a + μ g                      

a' = 0.2 + 0.05 x 9.8                

a' = 0.69 m/s²                              

Work done = Force x distance

F = m a'                                                            

F = \dfrac{6000}{9.8} \times 0.69

F = 422.44897 N                            

Work done = F x d                          

Work done = 422.44897 x 1000

Work done = 422449 J                  

Work done = 422.45 kJ            

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3 years ago
As denizens of the surface of a spinning planet, we are always in uniform circular motion. Imagine you are in Nairobi (on the Ea
Klio2033 [76]

Answer:

6.02 radian

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3 years ago
One particular descent goes from 2100m to 1600m. Assuming work done against friction is 90% of the potential energy change of th
alisha [4.7K]

Answer:

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V = 31.1 m/s / (.278 m/s / km /hr)= 112 km/hr

7 0
2 years ago
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