They can be stopped by a piece of paper.
The Heisenberg uncertainty principle listed above states that it’s impossible to determine with high precision both the momentum and position of an electron simultaneously.
Improper or incomplete usage of citations can lead to plagiarism.
Without proper usage of citations, teachers or whoever is looking over your work, may think because you do not hold acceptable citations, that they will think it is plagiarized. Plagiarism is taking another person's work or ideas without citing it. Citation or direct quotation could save you from plagiarism.
120 Fahrenheit -32 x 5/9 +273.15 = 322