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Mkey [24]
3 years ago
12

I’LL MARK YOU BRAINIEST IF U ANSWER IT

Physics
1 answer:
Veronika [31]3 years ago
6 0
I think it’s A because it makes the most sense
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Two very small spheres are initially neutral and separated by a distance of 0.30 m. Suppose that 2.50 1013 electrons are removed
quester [9]

Answer:

F = - 1,598 10⁻³ N

Explanation:

Electic strength is given by Coulomb's law

          F = k q₁ q₂  / r²

Where k is the Coulomb constant that is worth 8.99 10⁸ N m²/C², q₁ and q₂ are the charges and r is the distance that separates the electric charges

In this case the charge of the two spheres is the same and of a different sign since when you remove the charge of a sphere that was initially neutral, it is left with that charge removed but of the opposite sign

       q₁ = q₂ = 2.50 10¹³ electrons = 2.50 10¹³ 1.6 10⁻¹⁹

       q₀ = 4.0 10⁻⁶ C

Let's calculate

       F = - 8.99 10⁸ (4.0 10⁻⁶)² / 0.30²

       F = - 1,598 10⁻³ N

4 0
4 years ago
a bat experts a 120 N force on a 0.134 kg baseball for 0.04 seconds. what impolse is excerted on the bat
musickatia [10]
The impulse exerted by a force F on an object in a time \Delta t is given by
I = F \Delta t
In our problem, we have a force of 120 N: F=120 N, applied to the baseball for a time of \Delta t=0.04 s. Therefore the impulse is
I=F \Delta t = (120 N)(0.04 s)=4.8 Ns
3 0
3 years ago
19. A sample of an element has a volume of 78.0 mL and a density of 1.85 g/mL. What is the mass in grams of the sample? identify
sineoko [7]

Answer:

<h3>The answer is 144 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 78.0 mL

density = 1.85 g/mL

We have

mass = 78 × 1.85 = 144.3

We have the final answer as

<h3>144 g</h3>

Hope this helps you

6 0
3 years ago
HiA stone of mass 2.0kg is attached to one end of
jenyasd209 [6]

Answer:

41.38

Explanation: You take the 3.14 and multiply it with the

4 0
2 years ago
A polarized light that has an intensity I0 = 52.0 W/m² is incident on four polarizing disks whose planes are parallel and center
IceJOKER [234]

Answer:

The transmitted intensity through all polarizers = 34.73

Explanation:

Given :

Incident intensity = 52 W/m^2

Angle between the transmission axis and polarizer optic axis = 18°

According to the malus law, when unpolarized or polarized light passes through polarizing disk, the intensity of the transmitted light is directly proportional to the square of the cosine of angle between the transmission axis and polarizer optic axis.

∴ I = I' cos^2\alpha

Where I= transmitted intensity, I'= incident intensity, \alpha = angle between the transmission axis and polarizer optic axis.

Here, there are four polarizing disks so that.

from first disk,

∴ I₁ = 52 (cos)^2 18°

       = 52×0.904

       = 47.01

Now I₁  behave as an incident light for second polarizer so we only multiply

cos^218 term

so we write,

∴ I₂ = 47.01×0.904

      = 42.495

From third polarizer,

∴ I₃ = 42.495×0.904

       = 38.415

From forth polarizer,

∴ I₄ = 38.415×0.904

       = 34.73

Therefor, the the transmitted intensity through forth polarizer = 34.73 W/m^2.

5 0
3 years ago
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