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arsen [322]
3 years ago
5

a gas is placed inside a very cold box . The gas molecules transfer heat to the walls of the box. Which best describes what happ

ens to the gas as it cools down?
Physics
1 answer:
insens350 [35]3 years ago
8 0
As the gas cools down, particle movement slows down with it, and so does the temperature of the gas. This is because the more heat or thermal energy a gas has, the faster the particles move. This is why absolute zero, or 0 degrees Kelvin is defined as zero particle movement, because it has zero energy.
Hope this helps
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A 50-V de voltage source was connected in series with a resistor and capacitor. Calculate the current in A to two significant fi
Naddik [55]

Answer:

Current through circuit will be 0.2706\times 10^6A

Explanation:

We have given source voltage v = 50 volt

Resistance R=25Mohm=25\times 10^6ohm

Capacitance C=0.1\mu F=0.1\times 10^{-6}F

Time t = 5 sec

Time constant of RC circuit is given by \tau =RC=25\times 10^6\times 0.1\times 10^{-6}=2.5sec

We know that voltage across capacitor is given by v_c=v_s(1-e^{\frac{-t}{\tau }})

v_c=50(1-e^{\frac{-5}{2.5 }})=43.2332v

So current will be =\frac{v_s-v_c}{R}=\frac{50-43.2332}{25\times 10^{-6}}=0.2706\times 10^6A

So current through circuit will be 0.2706\times 10^6A

4 0
4 years ago
Light shines through a single slit whose width is 5.7 10-4 m. A diffraction pattern is formed on a flat screen located 4.0 m awa
polet [3.4K]

Answer: 557nm

Explanation:

Visible light has been known to have its wavelengths in the range between 400 to 700 nanometres (nm), or 4*10^-7 to 7*10^-7 m. This wavelength is between infrared and ultraviolet. Infrared has longer wavelengths and while on the other hand ultraviolet has shorter wavelengths. The wavelength of visible light has a frequency of approximately 430 to 750 terahertz (THz).

tanΦ= 0.0039/4 = 9.75*10^-4

Φ= tan^-1 (9.75*10^-4)

Φ= 0.056

λ= (5.7*10^-4) * sin 0.056

λ= 5.57*10^-7m

λ= 557nm

5 0
4 years ago
PLEASE ANSWER QUICK GIVING BRAINLIEST TO THE ONE WHO ANSWERS
dedylja [7]

Answer:  Iron combines with oxygen to produce rust, which is the compound named iron oxide.

Explanation:  Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.

Hope This Helps :)

4 0
3 years ago
Read 2 more answers
What happens to water when it changes to ice?
Vinvika [58]

Answer:

Its density decreases, and its volume increases

Explanation:

Density is defined as Mass/Volume. What happens when water transforms into ice is that its density decreases because the volume the molecules now occupy increases.

The denominator of the rational expression \frac{Mass}{Volume} is now larger (while the numerator stays the same), so the quotient gives a smaller number.

3 0
3 years ago
Read 2 more answers
Electrons of wavelength 1.5 nm are emitted from a material when light of wavelength 350nm is incident on it. What is the work fu
krok68 [10]

Answer:

3.5434 eV

Explanation:

For a particle with kinetic energy E and mass m , the wavelength  associated is given by the following relation,

\lambda=\frac{h}{\sqrt{2mE} }

E = \frac{h^2}{2m\lambda^2}

Putting the values  we get

E = \frac{(6.6\times(10^{-34})^2}{2\times9.1\times10^{-31\times(1.5\times10^{-9})^2}}

=1.063 x 10⁻²¹ J

= .0066 eV.

Energy of¹light in terms of eV

= 1244 / 350 = 3.55 eV.

Work function = 3.55 - 0.0066 = 3.5434 eV.

7 0
4 years ago
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