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3 years ago

Measure if how far an object has moved.

1 answer:

5 0

You can't really measure how far an object has moved. If you weren't
watching it the whole time, you can only measure how far it <em>IS</em> now from
where it started, but you don't know what route it traveled to get there.

The distance between where it started and where it ended up is called
the object's "displacement". That's the length of the straight line between
those two points. And it's also the shortest possible distance the object
could have moved in order to get to where it is now.

Funny thing: When you walk all the way around a yard, a track, or a building,
or drive a car one lap around the track, your <em>displacement</em> is zero, because
you end up in the same place you started from, and the distance is zero.
If somebody saw you before and after, but didn't see you walk or drive,
they wouldn't know that you had moved at all.

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2 years ago

Read 2 more answers

A parallel-plate capacitor is connected to a battery. After it becomes charged, the capacitor is disconnected from the battery a

Inessa [10]

Answer:

The potential difference between the plates increases

Explanation:

As we know that the capacitance of the capacitor is given by:

$q = CV$ (1)

where

q = charge

C = capacitance

V = Voltage or Potential Difference

Also, the capacitance of a parallel plate capacitor is given as:

$C = \frac{\epsilon_{o}A}{D}$ (2)

where

$\epsilon_{o} = permittivity of free space or vacuum$

A = Area of the plates

D = Separation distance between the plates

Now, from eqn (1) and (2):

$V = \frac{qD}{A\epsilon_{o}}$

Now, from the above eqn we can say that:

Potential difference depends directly on the separation distance between the plates of the capacitor and is inversely dependent on the area of the plates of the capacitor.

Therefore, after disconnecting, if the separation between the plates is increased the potential difference across it also increases.

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2 years ago