3 years ago

As its speed increases, what happens to its energy of motion?

Physics

1 answer:

irina [24]3 years ago

5 0

Answer:

The energy of motion increases

Explanation:

The reason the energy of motion increases is because as the speed increases there is more motion and more energy

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A 12 kg block is accelerating at the rate of 9.0 m/s? while being acted on by two forces.

Aliun [14]

Answer:

See below

Explanation:

F = ma

F = 12 * 9 = 108 N

108 N needed <u> add 30 N more east </u>

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1 year ago

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fiasKO [112]

Answer:

8m/s^2

Explanation:

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2 years ago

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worty [1.4K]

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3 years ago

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How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 3.33Ã—Ã—10âˆ

AlekseyPX

Answer:

There are 756.25 electrons present on each sphere.

Explanation:

Given that,

The force of repression between electrons, $F=3.33\times 10^{-21}\ N$

Let the distance between charges, d = 0.2 m

The electric force of repulsion between the electrons is given by :

$F=k\dfrac{q^2}{r^2}$

$q=\sqrt{\dfrac{Fr^2}{k}}$

$q=\sqrt{\dfrac{3.33\times 10^{-21}\times (0.2)^2}{9\times 10^9}}$

$q=1.21\times 10^{-16}\ C$

Let n are the number of excess electrons present on each sphere. It can be calculated using quantization of charges. It is given by :

q = ne

$n=\dfrac{q}{e}$

$n=\dfrac{1.21\times 10^{-16}}{1.6\times 10^{-19}}$

n = 756.25 electrons

So, there are 756.25 electrons present on each sphere. Hence, this is the required solution.

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3 years ago

20. The triple-point of water occurs at 273.16 K (0.01 °C) and a vapor pressure of 0.0060373 atm). At this point water can be __

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Answer:

E i think.

Explanation:

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3 years ago