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Sonja [21]
3 years ago
8

Which interaction contributes to the greenhouse effect?

Physics
2 answers:
allochka39001 [22]3 years ago
7 0

Answer:

A

Explanation:

Yuki888 [10]3 years ago
6 0

Answer:

A

Explanation:

Gases in the atmosphere absorb heat.

You know when you have a blanket around you and some heat gets trapped in but some still gets out. Thats basically what it is.

Plus I got it right in multiple questions including the test!

I hope that reassured you!

Have a good night!

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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
1 year ago
For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The larg
jeyben [28]

Answer:

<h2>Magnetic field strength in that region is 1.2 T</h2>

Explanation:

As we know by the formula of radius of charge moving in external field is given as

R = \frac{mv}{qB}

so we will have

R = 25 cm

m = 1.6 \times 10^{-27} kg

q = 1.6 \times 10^{-19} C

v = 0.10 \times 3 \times 10^8 m/s

now we have

0.25 = \frac{(1.6 \times 10^{-27})(3\times 10^7)}{(1.6 \times 10^{-19})B}

now we have

B = 1.2 T

8 0
3 years ago
Two locomotives approach each other on parallel track. Each has speed of 95 km/h with respect to the ground.If they are initiall
irinina [24]

Answer:

It will take 2.68 minutes for them to reach each other.

Explanation:

We use the two following kinematic equations, making the final position the same (for the moment they meet each other):

locomotive 1 -->  x_f=v*t

locomotive 2 -->  x_f=8.5\,-\,v*t

we make the two xf equal, and solve for the time (t) using v = 95 km/h:

95*t=8.5-95*t\\2*95*t=8.5\\t=8.5/(190)\\t = 0.0447\,\,hours

converting the hours into minutes by multiplying this value times 60;

t = 2.68 minutes

3 0
3 years ago
What is the rms current flowing through a light bulb that uses an average power of 30.0 W when it is plugged into a wall recepta
Amiraneli [1.4K]

Answer:

0.125 A

Explanation:

From the question given above, the following data were obtained:

Power (P) = 30 W

rms voltage (Vrms) = 240 V

rms Current (Irms) =?

The power in an electric circuit is given by the following equation:

Power (P) = current (I) × voltage (V)

With the above formula, we can obtain the rms current flowing through the bulb as shown below:

Power (P) = 30 W

rms voltage (Vrms) = 240 V

rms Current (Irms) =?

P = Irms × Vrms

30 = Irms × 240

Divide both side by 240

Irms = 30 / 240

Irms = 0.125 A

Thus, the rms current flowing through the light bulb is 0.125 A

7 0
3 years ago
[BWS.02]If the same experiment is repeated in different parts of the world by different scientists,
guajiro [1.7K]

Answer:

the results will be the same.it may be

7 0
3 years ago
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