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mestny [16]
3 years ago
13

23. Challenge: A gas is heated so that it expands from a volume of 1.0L to a volume of 1.5 l. If the

Physics
1 answer:
Natali [406]3 years ago
5 0

<u>417 K is the “final temperature” of the gas</u>.

<u>Explanation</u>:

According to “Charles law” the change in “volume” of a given mass of gas expanded is “directly proportional” to the “temperature” of the given gas expanded. When we keep “pressure” of the gas as constant. Mathematically,

v \alpha T

\frac{v}{T}=\text { constant }

If gas is expanded from initial volume to final volume and initial temperature to final temperature then,

\frac{v_{1}}{T_{1}}=\frac{v_{2}}{T_{2}}

\begin{array}{l}{\text { Where, } v_{1} \text { and } v_{2} \text { are the initial and final volumes of the gas expanded recpectively,}} \\ {T_{1} \text { and } T_{2} \text { are the initial and final temperatures of the gas expanded recpectively }}\end{array}

Given that,

Initial volume is 1.0L

Final volume is 1.5L

\text { Initial temperatureis } 5.0^{\circ} \mathrm{C}=5+273=278 \mathrm{K}

To find final temperature of the gas

Substitute the given values,

\frac{1}{278}=\frac{1.5}{T_{2}}

T_{2}=1.5 \times 278

T_{2}=417 K

Therefore, <u>final temperature of the gas after expanding is 417 K</u>.

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Starting from rest, a 2.1x10^-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exert
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Answer:

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Explanation:

Hi

<u>Knwons</u>

Mass m=2.1\times 10^{-4} kg, Work W=3.7\times 10^{-4} J and Force F=0.41N

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a) Here we are going to use W=mgh, so h=\frac{W}{mg}= \frac{3.7\times 10^{-4} J}{(2.1\times 10^{-4} kg)(9.8m/s^{2})} =0,1797m or 18cm approx.

7 0
3 years ago
Why would you expect sodium (Na) to react strongly with chlorine (Cl)?
Snowcat [4.5K]
3. is the answer, <span>Sodium needs to lose one electron, and chlorine needs to gain one electron. This is because Sodium's row always wants to give away an electron, while Chlorine's row wants to gain an electron.</span>
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Read 2 more answers
A 2.5 m -long wire carries a current of 8.0 A and is immersed within a uniform magnetic field B⃗ . When this wire lies along the
leva [86]

Answer:

Explanation:

Let the magnetic field be B = B₁i + B₂j + B₃k

Force = I ( L x B )  , I is current , L is length and B is magnetic field .

In the first case

force = - 2.3 j N

L = 2.5 i

puting the values in the equation above

- 2.3 j = 8 [ 2.5 i x ( B₁i + B₂j + B₃k )]

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comparing LHS and RHS ,

20B₃ = 2.3

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In the second case

L = 2.5 j

Force = I ( L x B )

2.3i−5.6k = 8 ( 2.5 j x (B₁i + B₂j + B₃k )

=  - 20 B₁ k + 20B₃ i

2.3i−5.6k = - 20 B₁ k + 20B₃ i

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So magnetic field B = .28 i + .115 B₃

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Part B

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8 0
3 years ago
A material will float on the surface of a liquid if the material has a density less than that of the liquid. given that the dens
Arisa [49]
We will first convert lb to grams and in³ to milliliters. 
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Answer: A block of material will float.
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