Physics, 04.07.2019 00:20 jason9394

Acharged particle that is moving in a static uniform magnetic fielda) may experience a magnetic foce, but its speed will not changeb) may experience a magnetic foce, but its direction of motion will not changec) may experience a magnetic force which will cause its speed to changed) will always experience a magnetic force, regardless of its direction of motione) none of the above statements are true

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Answer from: bskyeb14579

A) may experience a magnetic foce, but its speed will not change

Explanation:

A charged particle moving in an uniform magnetic field experiences a force given by:

$F=qvB sin \theta$

where

q is the charge of the particle

v is the velocity of the particle

B is the magnitude of the magnetic field

$\theta$ is the angle between the direction of v and B

From the formula we notice that:

- if the particle is moving parallel to the field, $\theta=0$ , so force experienced by the particle is zero --> so we can exclude option D)

Moreover, the magnetic force experienced by the particle is perpendicular to the direction of motion. This means that:

- The direction of motion of the particle will change --> so we can exclude option B)

In addition, we can notice that since the magnetic force is perpendicular to the direction of motion of the particle, the work done by the force on the particle is zero: this means that the kinetic energy of the particle does not change, so the speed of the particle does not change. So we can exclude also option C, therefore the only correct option is

A) may experience a magnetic foce, but its speed will not change

Answer from: Quest

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

Answer from: Quest

less than one you can't create energy

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Acharged particle that is moving in a static uniform magnetic fielda) may experience a magnetic foce...