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Ad libitum [116K]
3 years ago
15

The three main phases of matter (not including plasma) are solids, liquids, and gases. They have different properties concerning

the arrangement of particles. Choose all of the statements that are true.
Physics
2 answers:
Reil [10]3 years ago
7 0

Answer:

The statements to choose from are not shown in your question, but find below some characteristics of these three main phases, which may help you choose the right answers you are seeking.

Explanation:

Solid: The matter that constitutes it maintains a fixed volume and shape, with the particles that compose it close together and relatively fixed into place.

Liquid: The matter that constitutes it maintains a fixed volume, but has a variable shape that adapts to fit its container. Its particles are still close together but move freely.

Gas: The matter that constitutes it has both variable volume and shape, adapting both to fit its container. Its particles are neither close together nor fixed in place.

Vladimir79 [104]3 years ago
6 0

Answer:

solids have the most tightly-packed particle arrangement

liquids are closely-packed but with no regular arrangement

gases are loosely-packed and have no regular arrangement

Explanation:

usatestrep

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alukav5142 [94]

Answer:

a)V=18.35 m/s (South -East)

b) t =7.41 m/s

c)D= 66.70 m

Explanation:

Given that

Velocity of boat in east direction = 16 m/s

Velocity of river = 9 m/s

a)The resultant velocity V

V=\sqrt{16^2+9^2}\ m/s

V=18.35 m/s (South -East)

b)

We know that

Distance = Velocity x time

Lets t time takes to cross the river

136 = 18.35 x t

t =7.41 m/s

c)

   The distance covered downstream  

We know that

Distance = Velocity x time

t= 7.41 s

D= 7.41 x 9 m

D= 66.70 m

3 0
3 years ago
Give one example of a thermodynamic cycle that does not account for the carnot efficiency.
Arturiano [62]

Thermo-Electrochemical converter (UTEC) is a thermodynamic cycle that does not account for the Carnot Efficiency.

The Carnot cycle is a hypothetical cycle that takes no account of entropy generation. It is assumed that the heat source and heat sink have perfect heat transfer. The working fluid also remains in the same phase, as opposed to the Rankine cycle, in which the fluid changes phase. A practical thermodynamic cycle, such as the Rankine cycle, would achieve at most 50% of the Carnot cycle efficiency under similar heat source and heat sink temperatures.

<h3>What is Thermo-Electrochemical converter?</h3>

In a two-cell structure, a thermo-electrochemical converter converts potential energy difference during hydrogen oxidation and reduction to heat energy.

It employs the Ericsson cycle, which is less efficient than the Carnot cycle. In a closed system, it converts heat to electrical energy. There are no external input or output devices.

This means there will be no mechanical work to be done, as well as no exhaust. As a result, Carnot efficiency is not taken into account in this cycle. Carnot efficiency is accounted for by other options such as turbine and engine.

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3 years ago
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What is a combination of two or more simple machines?
Anna [14]

A compound

Explanation:

A compound machine is the combination of two or more simple machines.

An example is bicycle.

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The mass of an object is 4kg and it has a density of 5gcm^-3. what is the volume ​
Andru [333]

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volume=800 cm^-3

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