4 years ago

If an objects speed is constant and the direction is in a straight line what type of velocity does the object have

Physics

2 answers:

mash [69]4 years ago

5 0

It moves with constant speed and accelaration zero.

storchak [24]4 years ago

3 0

That's unaccelerated motion, and constant velocity.

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3 years ago

A wire of radius R has a current I uniformly distributed across its cross-sectional area. Ampere's law is used with a concentric

MrMuchimi

Answer:

Please refer to the figure.

Explanation:

The crucial point here is to calculate the enclosed current. If the current I is flowing through the whole cross-sectional area of the wire, the current density is

$J = \frac{I}{\pi R^2}$

The current density is constant for different parts of the wire. This idea is similar to that of the density of a glass of water is equal to the density of a whole bucket of water.

So,

$J = \frac{I}{\pi R^2} = \frac{I_{enc}}{\pi r^2}\\I_{enc} = \frac{Ir^2}{R^2}$