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STatiana [176]
3 years ago
6

Which of the following is an observation? A. The baby was crying very loudly; therefore, he must have been hungry. B. Jason star

ed at his computer screen for 2 minutes and then starting typing on the keyboard very rapidly. C. Stella must have been very upset when she left the room and slammed the door behind her. D. John was jumping up and down because he was excited about his new puppy.
Physics
2 answers:
Serga [27]3 years ago
8 0
B.
An observation is only what you can see/observe.
To make an assumption of anything does not make it an observation,but a prediction.
Hope this helps!
Marianna [84]3 years ago
3 0
B is an observation
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Answer:

F_x = -\frac{6 C_6}{2^7}

Attractive

Explanation:

Data provided in the question

The potential energy of a pair of hydrogen atoms given by \frac{C_6}{X_6}

Based on the given information, the force that one atom exerts on the other is

Potential energy μ = \frac{C_6}{X_6}

Force exerted by one atom upon another

F_x = \frac{\partial U}{\partial X} = \frac{\partial}{\partial X}  (-\frac{C_6}{X^6})

or

F_x = \frac{\partial}{\partial X}  (\frac{C_6}{X^6})

or

F_x = -\frac{6 C_6}{2^7}

As we can see that the C_6 comes in positive and constant which represents that the force is negative that means the force is attractive in nature

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