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ExtremeBDS [4]
4 years ago
14

How to measure potential energy of a ball?

Computers and Technology
1 answer:
Ronch [10]4 years ago
8 0
The formula for potential energy is PE=mgh
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How many times will an infinite loop repeat?
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3 years ago
Choose the output result of the below code.
SIZIF [17.4K]

Answer:

B

Explanation:

When you initialize an instance of FunEvent(tags, year) and assign it to bc. The instance variables in this case are: self.tags = ["g", "ml"] and self.year = 2022. But then you alter tags, which will also change self.tags, since self.tags is a reference to the list you passed in as an argument. This is not the case when you do year=2023 because, first of all, integers are not mutable, and also because even if somehow integers were mutable, you're not changing the object in-place, you're simply changing the where the "variable" is pointing to. So for example if you did tags = ["g", "ml", "bc"] instead of tags.append("bc"), it would also not change the value of the instance variable "tags", because you wouldn't be changing the object in-place. So when you print(bc), the instance variables will be ["g", "ml", "bc"] and 2022. When you try to print an object, it call try to convert it into a string using the __str__  magic method. In this case it will return a string formatted as "Event(tags={self.tags}, year={self.year}) which will output "Event(tags=['g', 'ml', 'bc'], year=2022)" So the correct answer is B

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2 years ago
A tornado may be approaching if you observe which of the following?
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Networks can provide a fire wall. What are the choices.
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