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4 years ago

What is the formula for electrostatic force?

Physics

2 answers:

Nonamiya [84]4 years ago

7 0

F = k $\frac{q1 q2 }{ r^{2} }$

k - coefficient
q1 and q2 - charge
r - distance btw them

Feliz [49]4 years ago

4 0

$\huge\rm Electrostatic \:force$

This is a type of force, which causes attraction or repulsion between two particles due to Electric Charges.

Like charges repel and unlike charges attract.

Example :- Rubbing a scale on oily hair, attracts pieces of paper, here both of them accumulate Unlike Charges, as paper has Negative charge while scale has Postive charge

<h2><u>Additional Information</u></h2>

Electrostatic Force is a non contact Force, because it doesn't require contact with other body, they push or pull objects without getting touched

Electrostatic Force is also called Coulomb Force or Coulomb interaction.

It is named after a French Physicist Charles - Augustin de Coulomb.

The electrostatic force acts in about, one-tenth of the diameter of atomic nucleus.

Electrostatic Force is $\bf 10^{36}$ times, greater than Gravitational Force.

Electrostatic follows Inverse Square laws that is it is inversely proportional to the square of the distance from the source.

<h2><u>Coulomb's Law Formula:-</u></h2>

$\huge \bf F = k \dfrac{q_{1} q_{2} }{r^{2} }F=k$

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The weight of a body of certain mass become zero in space.why?<br>

Nady [450]

Answer:

There is no force in space.

Explanation:

Weight is the gravitational force acting on the mass as in space there is no gravity so weight appeares as zero

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4 years ago

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If you swim from one point at the edge of the pool to another, along a straight line, what is the longest distance d you can swi

densk [106]

The longest distance that a person can swim is 5.64 m.

<h3>What is the longest distance?</h3>

We know that the diameter of a circle is a line that is drawn from one point to another in the circle. Now we are told that the pool is circular in nature. That implies that the longest that a person can swim could be obtained form the diameter of the circle.

Given that;

A = πr^2

A = area of teh circular pool

r = radius of the pool

r = √A/ π

r = √25/3.142

r = 2.82m

Diameter of the circular pool = 2 r = 2 (2.82 cm) = 5.64 m

Learn more about circle:brainly.com/question/11833983

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Missing parts;

An ad for an above-ground pool states that it is 25 m2. From the ad, you can tell that the pool is a circle. If you swim from one point at the edge of the pool to another, along a straight line, what is the longest distance d you can swim? Express your answer in three significant figures.

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2 years ago

Calculate the potential energy of a +1.0μC point charge sitting 0.1m from a -5.0μC point charge.

AfilCa [17]

Answer:

P.E. = -0.449 J

Explanation:

Potential energy of a charge particle in any electrostatic field is defined as the amount of work done ( in negative ) to bring that charge particle from any position to a new position r.

Now Potential energy is defined by this formula,

P.E. = k q₁ q₂/ r

where P.E. is the potential energy.

k = 1/( 4πε₀) = 8.99 × 10⁹ C²/ ( Nm²)

q₁ = charge of one particle = +1.0μC

q₂ = charge of another particle = -5.0μC

r = distance = 0.1 m

Now , P.E. = 8.99 × 10⁹C²/ ( Nm²) * ( -5.0 × 10⁻⁶ C ) × ( 1 × 10⁻⁶ C ) / 0.1 m

P.E. = -0.449 J

8 0

3 years ago

A circular tube is subjected to torque T at its ends. The resulting maximum shear strain in the tube is 0.005. Calculate the min

TEA [102]

Answer:

The minimum shear strain in the tube is $4.162\times10^{-3}$

The shear strain at the median line of the tube section is $9.15\times10^{-3}$

Explanation:

Given that,

Maximum shear strain = 0.005

We need to calculate the minimum shear strain

Using formula of maximum shear strain

$\gamma_{max}=\dfrac{d_{2}}{2}\times\theta$

$\theta=\dfrac{2\times\gamma_{max}}{d_{2}}$

Where, $\gamma_{max}$ =maximum shear strain

$\theta$ =angle of twist

$d_{2}$ = diameter

Put the value into the formula

$\theta=\dfrac{2\times0.005}{3}$

$\theta=0.00333\ rad$

$\theta=3.33\times10^{-3}\ rad$

Now, Using formula of minimum shear strain

$\gamma_{min}=\dfrac{d_{1}}{2}\times\theta$

Put the value into the formula

$\gamma_{min}=\dfrac{2.5}{2}\times3.33\times10^{-3}$

$\gamma_{min}=0.0041625$

$\gamma_{min}=4.162\times10^{-3}$

We need to calculate the shear strain at the median line of the tube section

Using formula of shear strain at the median line

$\gamma=\dfrac{d_{1}+d_{2}}{2}\times\theta$

Put the value into the formula

$\gamma=\dfrac{2.5+3}{2}\times3.33\times10^{-3}$

$\gamma=0.0091575$

$\gamma=9.15\times10^{-3}$

Hence, The minimum shear strain in the tube is $4.162\times10^{-3}$

The shear strain at the median line of the tube section is $9.15\times10^{-3}$

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4 years ago

Which describes the process of conduction?

fenix001 [56]

I think the correct answer from the choices listed above is option A. The process of conduction is described by the heat energy is transferred from the land to the air by direct contact. Conduction is the process of heat transfer that happens through the collisions between molecules.

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3 years ago