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4 years ago

Is it possible to compress an ideal gas isothermally in an adiabatic piston–cylinder device? explain?

1 answer:

3 0

<span>Answer: Since, Q = U+W (Q-W = U) With adiabatic, Q =0 If some work is done then, U will be non zero. And since U is internal energy change it should result in a temperature change. With isothermal process we are also saying U=0 but that would imply that W=0. However we did work since compression requires work to be done. So it is not possible.</span>

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Rocks A and B are located at the same height on top of a hill. The mass of rock A is twice the mass of rock B. How does the pote

Ronch [10]

Potential energy is defined by formula

$U = mgh$

here

m = mass

g = acceleration due to gravity

h = height

Now here two different stones are located at same height

while mass of stone A is twice that of stone B

so here we can say potential energy of A is

$U_a = (2m)gh$

Similarly potential energy of B is

$U_b = mgh$

now if we take the ratio of two energy

$\frac{U_a}{U_b} = 2$

so we can say potential energy of stone A is two times the potential energy of B

7 0

3 years ago

To provide the pulse of energy needed for an intense bass, some car stereo systems add capacitors. One system uses a 1.6FF capac

Hoochie [10]

Answer:

Energy stored at 12 volt will be 115.2 J and energy stored at 24 volt will be 460.8 volt

Explanation:

We have given capacitance of capacitor C = 1.6 F

Normal voltage V = 12 volt

And system uses 2 volt to charge the system

We know that energy stored in the capacitor is equal to $E=\frac{1}{2}CV^2$

So energy stored at 12 volt will be equal to $E=\frac{1}{2}\times 1.6\times 12^2=115.2j$

And energy stored at 24 volt will be equal to $E=\frac{1}{2}\times 1.6\times 24^2=460.8j$

So energy stored at 12 volt will be 115.2 j and energy stored at 24 volt will be 460.8 j

6 0

3 years ago

Read 2 more answers

The density of paper is 1.20 g/cm3. what is the mass of the paper in a notebook that is 76 mm thick, 215.9 mm wide, and 279.4mm

bixtya [17]

<span>Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. To determine the mass, we calculate the volume of the paper and multiply to the density. We do as follows:

Volume = 76 mm x 215.9 mm x 279.4 mm = 4584506.96 mm^3 or 4584.51 cm^3

Mass = 1.20 g/cm^3 ( 4584.51 cm^3 ) = 5501.41 g</span>

6 0

4 years ago

How does an increase in thermal energy affect molecules?

zimovet [89]

The molecules tend to speed up and move faster throughout the substance once thermal energy increases. This is evident whenever we heat up water as its molecules tend to move faster throughout the water as thermal energy tends to increase.

4 0

3 years ago

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Which of the following is true about ALL energy conversions?

iogann1982 [59]

Answer:

d I think

Explanation:

hope this helps

8 0

3 years ago

Read 2 more answers