What is the measure of disorder in a system called? A. efficiency B. Enthalpy C. Work D. Entropy

Physics

2 answers:

lorasvet [3.4K]3 years ago

7 0

D.) Entropy
Entropy is the measure of disorder in the universe.

pentagon [3]3 years ago

3 0

Answer : The correct option is, (D) Entropy

Explanation :

Entropy : It is defined as the measurement of randomness or disorderedness in a system.

The order of entropy will be,

As we are moving from solid state to liquid state to gaseous state, the entropy will be increases due to the increase in the disorderedness.

As we are moving from gaseous state to liquid state to solid state, the entropy will be decreases due to the decrease in the disorderedness.

Enthalpy : It is defined as the amount of heat added or removed from the system.

Work : It is the product of force and distance of an object.

Efficiency : It is defined as the percent ratio of output to input energy.

Hence, the measure of disorder in a system called entropy.

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(1) Differentiate EN with respect to r, and then set the resulting expression equal to zero, since the curve of EN versus r is a

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Which of the following would be used in luminosity calculations?

Daniel [21]

Answer:

1) joule

2) $kgm^{2}/s^{2}$

3) $10\%$

Explanation:

1) Luminosity is the <u>amount of light emitted</u> (measured in Joule) by an object in a unit of<u> time</u> (measured in seconds). Hence in SI units luminosity is expressed as joules per second ( $\frac{J}{s}$ ), which is equal to Watts ( $W$ ).

This amount of light emitted is also called radiated electromagnetic power, and when this is measured in relation with time, the result is also called radiant power emitted by a light-emitting object.

Therefore, if we want to calculate luminosity the Joule as a unit will be used.

2) Work $W$ is expressed as force $F$ multiplied by the distane $d$ :