A proton (q=1.06 x 10^-19) tzveis east through a downward (into the page) magnetic field of 0.024 Tat a speed of 18 x 10'6 mis. What is the magnitude of the force acting on the proton

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Explanation:

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Hi,

I believe, all that apply to: For what reasons could a theory be changed or" replaced?," are:

- New technology is developed that provides more information about the theory.
- New experimental methods are designed to test a theory.
- New information is discovered that does not support the theory. 

*Note: I am not for sure, though. Please understand if I was not fully correct.*

Faith xoxo