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IrinaK [193]
3 years ago
11

please hurry In which state of matter has the LEAST kinetic energy? A) gas B) liquid C) plasma D) solid

Physics
2 answers:
anastassius [24]3 years ago
7 0
Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy.
otez555 [7]3 years ago
4 0
The answer is d.
gas has molecules that are far apart, therefore having more room to move around, while solids have molecules close together that cannot move as easily.
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It will always have a zero acceleration

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Consider a current carrying a wire coming out of your computer screen towards you. Which statement below correctly describes the
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1. The magnetic field encircles the wire in a counterclockwise direction

Explanation:

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Ever current carrying conductor produces a magnetic field around it.

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3 years ago
Calculate the standard electrode potential difference (e°) of the daniell cell (at 1 bar) if temperature is 473.15 k.
anzhelika [568]
Missing data in the text of the exercise: The molar concentration of Zinc is 10 times the molar concentration of copper.

Solution:

1) First of all, let's calculate the standard electrode potential difference at standard temperature. This is given by:
E^0=E_{cat}^0-E_{an}^0
where E_{cat}^0 is the standard potential at the cathode, while E_{an}^0 is the standard potential at the anode. For a Daniel Cell, at the cathode we have copper: E_{Cu}^0=+0.34 V, while at the anode we have zinc: E_{Zn}^0=-0.76 V. Therefore, at standard temperature the electrode potential difference of the Daniel Cell is
E^0=+0.34 V-(-0.76 V)=+1.1 V

2) To calculate E^0 at any temperature T, we should use Nerst equation:
E^0(T)=E^0- \frac{R T}{z F} \ln  \frac{[Zn]}{[Cu]}
where 
R=8.31 J/(K mol)
T=473.15 K is the temperature in our problem
z=2 is the number of electrons transferred in the cell's reaction
F=9.65\cdot 10^4 C/mol is the Faraday's constant
[Zn] and [Cu] are the molar concentrations of zinc and in copper, and in our problem we have [Zn]=10[Cu].
Using all these data inside the equation, and using E^0=+1.1 V, in the end we find:
E^0(T)=E^0- \frac{R T}{z F} \ln \frac{[Zn]}{[Cu]}=+1.053 V
8 0
2 years ago
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m_a_m_a [10]

Answer:

C) W = - 190 J

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6 0
3 years ago
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Answer:

The one in the middle

Explanation: i listened to the other person and i got it wrong, this is the answer for edge2020 sience review on energy!!!!

trust me its the middle one!!!!!

And everyone if ur not sure, like 100% sure about an answer dont answer at all cuz for 1: ur taking up a spot for others to answer. for 2: you could make people wrong. And for 3: its annoying. And 4: it makes stuff like this happen!

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