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Phoenix [80]
3 years ago
11

A cylinder which is in a horizontal position contains an unknown noble gas at 4.63 × 104 Pa and is sealed with a massless piston

. The piston is slowly, isobarically moved inward 0.163 m, while 1.95 × 104 J of heat is removed from the gas. If the piston has a radius of 0.272 m, calculate the change in internal energy of the system.
Physics
1 answer:
AleksandrR [38]3 years ago
3 0

Answer:

The change in internal energy of the system is -17746.78 J

Explanation:

Given that,

Pressure P=4.63\times10^{4}\ Pa

Remove heat \Delta U= -1.95\times10^{4}\ J

Radius = 0.272 m

Distance d = 0.163 m

We need to calculate the internal energy

Using thermodynamics first equation

dU=Q-W...(I)

Where, dU = internal energy

Q = heat

W = work done

Put the value of W in equation (I)

dU=Q-PdV

Where, W = PdV

Put the value in the equation

dU=-1.95\times10^{4}-(4.63\times10^{4}\times3.14\times(0.272)^2\times(-0.163))

dU=-17746.78\ J

Hence, The change in internal energy of the system is -17746.78 J

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Pluto’s diameter is approximately 2370 km, and the diameter of its satellite Charon is 1250 km. Although the distance varies, th
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Answer:

r_{cm} = 2520.5 km

Explanation:

As we know that mass is the product of volume and density

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so we will have

\frac{M_p}{M_c} = (\frac{r_p}{r_c})^3

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now let the position of Pluto is at origin so we have

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r_{cm} = \frac{19700}{6.81 + 1}

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A student throws a ball upward with a velocity of 35 m/s. What is the acceleration of the ball as it rises to the top of its arc
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Answer:

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Besides, the gravitational acceleration in the Earth and, in consequence, the acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

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Speed, frequency and wavelength is related as:

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Increasing the wavelength of a wave doesn’t change its speed. That’s because when wavelength increases, wave frequency decreases. As a result, the product of wavelength and wave frequency is still the same speed.

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An inventor is applying for a patent. He claims his new heat engine can produce 1,200 J of work for every 1,800 J of heat applie
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<h3>Efficiency of the heat engine</h3>

The efficiency of the heat energy is determined by taking the ratio of the output energy to input energy as shown below;

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Learn more about efficiency here: brainly.com/question/15418098

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