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Rama09 [41]
3 years ago
15

One statement of the first law of thermodynamics is that:___________.

Physics
1 answer:
blagie [28]3 years ago
6 0

Answer:

a. the amount of work done on a system is dependent of pathway

Explanation:

The first law of thermodynamics states that the change in internal energy of a system equals the net heat transfer into the system minus the net work done by the system.

ΔU = Q - W

Where;

Q, the net heat transfer into the system depends on the pathway

W, the net work done by the system also depends on the pathway

But, ΔU, the change in internal energy is independent of pathway

Therefore, the correct option is "A"

a. the amount of work done on a system is dependent of pathway

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How does a model differ from a theory?
yuradex [85]

Answer:

Explained

Explanation:

A model is practical representation of reality with help of various tools called model. It is more purposeful, appealing and provide greater understanding of the specific phenomenon called modeling.

Theory on the other hand are set of written statement which is more generalized and aimed to explain the phenomenon. Theory is developed through the process of abstraction, experimentation, and deduction.

A model is often is used to describe an application of a theory for a specific case.

4 0
3 years ago
Suppose the wavelength of the light is 450 nm . how much farther is it from the dot on the screen in the center of fringe e to t
lbvjy [14]

Since you are looking at a right fringe, the answer is all the time a multiple of the wavelength for the reason that the light makes constructive intrusion. If you are looking at the center (zeroth) fringe, the difference is (450)(0) = 0. For the first maximum, the difference is 450 nm. For the second, it is 450 x 2 = 900 nm. Basically, for the nth maxima, the difference is 450n. 

8 0
3 years ago
A river flows at a speed vr = 5.88 km/hr with respect to the shoreline. A boat needs to go perpendicular to the shoreline to rea
Elodia [21]

Answer:

is is a

Explanation:

4 0
3 years ago
Why do humans to experience the four seasons
Tcecarenko [31]

Answer:

As the earth spins on its axis, producing night and day, it also moves about the sun in an elliptical (elongated circle) orbit that requires about 365 1/4 days to complete. The earth's spin axis is tilted with respect to its orbital plane. This is what causes the seasons.

Explanation:

5 0
2 years ago
A DC current of 60 mA can cause paralysis of the body's respiratory muscles and hence interfere with breathing, but only 15 mA (
Liula [17]

To solve this problem it is necessary to apply the concepts related to Ohm's Law to find the voltage in the case of direct current. While for the Alternate current we use the concept of RMS voltage.

PART A) In the case of DC we have to,

V=IR

Where,

I = Current

R = Resistance

Where the current is 60mA y the resistance is 1000\Omega , then the potential would be

V=(60mA)(1100\Omega)

V = 66V

In the case of DC we have that the current and the RMS voltage is,

I_{rms} = 15 mA

R = 1100 \Omega

V_{rms} = 16.5 V

The potential in AC then is,

V_o = \sqrt{2}V_{rms}

V_o = \sqrt{2}(16.5)

V_o = 23.3345 V

3 0
3 years ago
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