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Sergeu [11.5K]
1 year ago
11

State coulomb's law mathematically

Physics
1 answer:
Vsevolod [243]1 year ago
7 0

Coulomb's law is express as:

\begin{gathered} F=k\frac{q_1q_2}{r^2} \\ \text{ where} \\ k\text{ is Coulomb's constant} \\ q_1\text{ and }q_2\text{ are the charges} \\ r\text{ is the distance between charges} \end{gathered}

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A 12kg cheetah accelerates 24 m/s". What is the force the cheetah needed to run?
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Answer:

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Explanation:

Given parameters:

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Unknown:

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3 years ago
A billiard ball is moving in the x-direction at 30.0 cm/s and strikes another billiard ball moving in the y-direction at 40.0 cm
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Answer:

53.13 °

Explanation:

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tanα = Dy/Dx

Where:

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At this point we do not need the speed of the first ball after the collision because in that moment is already heading in the direction that we are looking for. Therefore, we just need to use the innitial data to calculate the direction which the first ball will go.

According to this, then:

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α = tan⁻¹(1.3333)

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This means that the final direction of the first ball is 53.13° and in the x axis because the starting momentum of this ball in the x axis has not dissapeared.

Hope this helps

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3 years ago
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