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mina [271]
4 years ago
14

Why should photons emitted by a hotter gas have, on average, shorter wavelengths than photons emitted by a cooler gas?

Physics
1 answer:
harkovskaia [24]4 years ago
7 0

According to wein's law,

wavelength has inverse relation with temperature

so that's why hotter gas has shorter wavelength than cooler gas.

hope this answer is correct ....

You might be interested in
A gas initially at 2.8 bar and 60oC is compressed to a final pressure of 14 bar in an isothermal internally reversible process.
Gekata [30.6K]

The work and heat transfer isothermal internally reversible process.

An isothermal procedure is a thermodynamic procedure in which the temperature of a gadget stays consistent. The transfer of heat into or out of the gadget occurs so slowly that thermal equilibrium is maintained. The melting of ice at 0 diploma is an example of isothermal technique. The reaction in a warmth pump is an example of isothermal manner. In Isothermal manner temperature is constant for the duration of the procedure and follows Boyles regulation.

Given,

Gas at initially P1= 2.8 bar

                       P2 = 14 bar

isothermal reversible process,

Compressed pressure at 60°C

(a) R = 134a

  For Refrigerant 134a R134a

At P1 = 14 bar T1 = 600C

S1 = 0.9389 KJ/Kg K

V1 = 264.64 KJ/kg

At  

P2 = 2.8 bar T2 = 600C

S2 = 1.1142 KJ/Kg K

V2 = 278.56 KJ/kg

T = 60 + 273 = 333K

Q= 2 Tds

2 Q=T ſ ds

= T(S2-S1)

= 333 ( 1.1142 - 0.9389 )

= 58.3749 KJ/Kg

Heat transfer Q =  58.3749 KJ/Kg

(b) air as an ideal gas.

Q= 2 Tds

2 Q=T ſ ds

= T(S2-S1)

 =T-R In P2 P1

 = 333 * -0.287 In 2.8 14

= 153.81 KJ/Kg

Heat transfer Q   = 153.81 KJ/Kg

W = Q - ΔV

= 28.3749 - (278.56-264.64)

= 14.4549 KJ/Kg

Work W  = 14.4549 KJ/Kg

Learn more about  isothermal  process here:-brainly.com/question/17097259

#SPJ4

8 0
2 years ago
PLEASEE HELPPLook at the diagram of two students pulling a bag of volleyball equipment. The friction force between the bag and t
mars1129 [50]

Answer:

The net force is 21 N, and the bag will go to the right.

Explanation:

You can find the net force by adding both values of the boy and the girl, and then subtracting four from it. You can also figure out which direction its moving by looking at which side is exerting the most force, which would be the right side.

<em>Hope </em><em>it </em><em>helps</em><em>!</em>

7 0
3 years ago
How to calculate density
Marizza181 [45]

Answer:

The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

Explanation:

have a beautiful day ahead

4 0
3 years ago
Read 2 more answers
What voltage would be measured across the 15 ohm resistor?
Alona [7]

Answer: That depends on what other components are in the same circuit

along with the 15-ohm resistor.

If there's nothing else, and the battery is connected across the 15-ohm

resistor, then when you measure the voltage across the 15-ohm resistor,

your voltmeter is also connected straight across the battery, and you read

10 volts.

Explanation:

6 0
3 years ago
A stationary horn emits a sound with a frequency of 228 Hz. A car is moving toward the horn on a straight road with constant spe
stiks02 [169]

Answer: 26.84 m/s

Explanation:

Given

Original frequency of the horn f_o=228\ Hz

Apparent frequency f'=246\ Hz

Speed of sound is V=340\ m/s

Doppler frequency is

\Rightarrow f'=f_o\left(\dfrac{v+v_o}{v-v_s}\right)

Where,

v_o=\text{Velocity of the observer}\\v_s=\text{Velocity of the source}

Insert values

\Rightarrow 246=228\left[\dfrac{340+v_o}{340-0}\right]\\\\\Rightarrow 366.84=340+v_o\\\Rightarrow v_o=26.8\ m/s

Thus, the speed of the car is 26.84\ m/s

4 0
4 years ago
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