Entropy can only be decreased in a system if

Physics

2 answers:

Marta_Voda [28]3 years ago

8 0

Answer:

Heat is removed

Explanation:

Entropy is measure of chaos or disorder. Entropy of the universe is increasing that means it is positive. Entropy is positive for irreversible process. For entropy to be negative which means for it to decrease, heat must be removed from the system. It will reduce the disorder of the system that is this process will bring order in the system and hence, the entropy would be negative.

Ksenya-84 [330]3 years ago

4 0

heat is removed, because entropy is the thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system

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Can someone help? Thanks.

Lilit [14]

The average speed of Frank's car is 2 m/s and the average speed of Noah's car is 1.8 m/s.

<u>Explanation:</u>

Average speed is the measure of total distance covered at different time period. Since, the formula used for calculating the average speed is the ratio of total distance covered by each car to the time taken to cover that distance.

As there is only one set of data i.e., distance and time, the average speed will be equal to the speed of the car.

So in this case, the total distance covered by franks car is 300 cm = 3 m in 1.5 s. Then, the average speed will be

$Avg. S_{frank} = \frac{Total\ distance\ rolled\ by\ his\ car}{Time\ taken}$