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klasskru [66]
4 years ago
9

Do forces really exist or are they just a way of describing situations?

Physics
1 answer:
SVETLANKA909090 [29]4 years ago
8 0

Answer: According to a website that I learned from, forces DO exist!!

Explanation:

According to RevisionWorld, "Forces can have different effects; they can cause objects to start moving, stop moving, stay in the same place or rotate. They can also be of different types; gravitational forces are caused by and affect objects with mass, friction forces oppose relative motion and the force pushing up on you at the moment, the normal contact force, is due to compression of the material that you are sat on. In this context ‘normal’ means ‘at right angles to the surface’."

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3 years ago
The diagram below shows a light ray striking Medium A and Medium B at the same angle.
zepelin [54]

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3 years ago
What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight?Use 1.67×
vazorg [7]

The electric force on the proton is:

F = Eq

F = electric force, E = electric field strength, q = proton charge

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Since the electric force and gravitational force balance each other out, set their magnitudes equal to each other:

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Given values:

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E(1.60×10⁻¹⁹) = 1.67×10⁻²⁷(9.81)

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