Answer:
The answer is Stroboscopic movement
Explanation:
Stroboscopic movement occurs when we do not see a motion continuously but in discrete shots. It is an effect in which we see an object at one place and after another instant the object seems to have shifted it's position.
Auto kinetic effect is an effect in which a stationary point of light appears to move.It occurs as our brains can perceive motion relative to some other object and cannot observe ,motion along a featureless terrain or environment.
Phi effect causes an observer to perceive motion in stationary objects.
A) Records of the dates and quantities of refrigerant recovered and recycled are unnecessary
Answer:
- import statistics
- def st_dev(file_name):
- with open(file_name) as file:
- data = file.readlines()
- numList = []
- for x in data:
- numList.append(int(x))
-
- return statistics.pstdev(numList)
- print(st_dev("text1.txt"))
Explanation:
The solution code is written using Python.
To ease the calculation task, we can import Python statistics module to use the pstdev method to calculate the population standard deviation of a list of numbers (Line 1).
Next, create a st_dev function that take single argument file_name (Line 3). In the function, it will open the input file and read the data line by line (Line 4-5). Create a for loop to traverse through each line of the data which is an integer and append it to numList (Line 7-8). We can pass the numList to pstdev method (Line 10) and return the resulting standard deviation value as output.
We test the function by passing a file which hold a list of integer values in each line (Line 12).
8
9
12
11
21
15
16
10
7
13
And the output we shall get is 4.019950248448356
Answer:
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