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3 years ago

15

Two boys wearing roller skates are standing on a smooth surface with the palms of their hands touching and their arms bent, as s

hown above. if boy x pushes by straightening his arms out while boy y holds his arms in the oringinal position, what is the motion of the two boys

1 answer:

vlada-n [284]3 years ago

8 0

Boy X and Boy Y both move backward in opposite directions.

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A charged particle is observed traveling in a circular path in a uniform magnetic field. If the particle had been traveling four

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Answer:

The new radius of the trajectory of the particle is four times the previous radius

Explanation:

In order to know what is the radius of the trajectory of the charged particle, if its speed is four times as fast, you take into account the following formula, which describes the radius of a charged particle in a magnetic field:

$r=\frac{mv}{qB}$ (1)

If the speed of the particle is for time as fast, that is, v' = 4v, you obtain, in the equation (1):

$r'=\frac{mv'}{qB}=\frac{m(4v)}{qB}=4\frac{mv}{qB}=4r$

The new radius of the trajectory of the particle is four times the previous radius

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