1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zhuklara [117]
3 years ago
15

How much energy is stored in the electric field of a 50-μm-diameter cell with a 7.0-nm-thick cell wall whose dielectric constant

is 9.0?
Physics
2 answers:
Nady [450]3 years ago
7 0
:<span>  </span><span>Under the assumption that a cell is made up of two concentric spheres you find the surface are of the inside sphere which will be your A. 

You already have your separation and dielectric constant so just use the formula you stated towards the end of your question and you get 8.93x10^-11 Farads which is about 89pF</span>
hichkok12 [17]3 years ago
3 0

The capacitance of the capacitor will be \boxed{8.9\times10^{-11}\text{ F}} or \boxed{89\text{ pF}}.

Explanation:

Given:

The diameter of the plates of the capacitor is 50\,\mu\text{m}.

The distance between the plates is 7\text{ nm}.

The dielectric constant of the medium is 9.0.

Concept:

The two conducting plates kept parallel to each other and placed at a particular distance from one another are considered to be the parallel plate capacitor.

The capacitance of the parallel plates capacitor formed by the two plates is given by the expression:

\boxed{C=\dfrac{K\epsilon_0A}{d}}

Here, C is the capacitance of the plates, K is the dielectric constant of the medium, \epsilon_0 is the permittivity of free space, A is the area of the plates and d is the distance between the plates.

The area of the plates is:

\begin{aligned}A&=\pi R^2\\&=3.14\times(25\times10^{-6})^2\\&=1.96\times10^{-9}\text{ m}^2\end{aligned}

Substitute the values in equation of capacitance.

\begin{aligned}C&=\dfrac{9.0\times8.85\times10^{-12}\times1.96\times10^{-9}}{7.0\times10^{-9}}\\&=8.9\times10^{-11}\text{ F}\\&=89\text{ pF}\end{aligned}

Thus, The capacitance of the capacitor will be \boxed{8.9\times10^{-11}\text{ F}} or \boxed{89\text{ pF}}.

Learn More:

1. Change in momentum due to its collision: brainly.com/question/9484203  

2. Type of mirror used by dentist: brainly.com/question/997618  

3. Energy density of the energy stored between the plates of capacitor brainly.com/question/9617400

Answer Details:

Grade: Senior School

Subject: Physics

Chapter: Capacitor

Keywords:

capacitor, capacitance, electric, parallel, plates, particular distance, dielectric constant, permittivity, area of the plates.

You might be interested in
List examples of how the Bill of Rights protects you:<br> .<br> .<br> .<br> .<br> .
Naya [18.7K]

guaranteeing freedom of speech, press, assembly, and exercise of religion

4 0
2 years ago
What is the weight of a spring balance when the point is 30​
andrezito [222]

Answer:

A 30 lb weight is attached to the end of a spring. The spring is stretched 6 in. Find the equation of motion if the weight is released from rest a point 3 inches above equilibrium position 。x(,) =-2 sin(81) 32 x(t) =-32 cos(80 O x(r) =-icos(81)

Explanation:

8 0
2 years ago
5. A 10 kg ball is traveling at the same speed as a 1 kg ball. Compared to the 10 kg ball, the 1 kg ball has (2 points)
suter [353]
What’s the rest of the question or is that it?
4 0
3 years ago
What is happening in the brain, because people are so rude?
Masteriza [31]
That's a good question.
8 0
3 years ago
Read 2 more answers
If you cannot get a chair to move across the floor, it is because ___ friction opposes your push.
denis-greek [22]
If you cannot get a chair to move across the floor, it is because static friction opposes your push. When you say static or kinetic friction the two object that facing each other are opposing each other. That's why you're having a hard time pushing the chair.
7 0
3 years ago
Other questions:
  • The velocity component with which a projectile covers certain horizontal distance is maximum at the moment of? a) Hitting the gr
    15·1 answer
  • If a constant force acts on two objects of different masses which object will accelerate more?
    10·1 answer
  • A force of 7.0 N acts on a block of wood at an angle of 50 degrees above the horizontal as the block moves a distance of 6.4 met
    9·1 answer
  • A force that causes an object to change its motion is called?
    8·1 answer
  • If a species can adapt to a changing environment, or ____, its descendants will survive.
    5·1 answer
  • If a gun is fired straight up and has a muzzle velocity of 424 m/s how long will it take the bullet to reach its maximum height?
    15·1 answer
  • What is a situation where you can observe both kinetic and potential energy, shifting from one form to the other?
    13·1 answer
  • Find analytically the velocity of the object at the end point of the inclined plane for a certain angle Ө
    8·1 answer
  • 6.8. A marble with a mass m of 3.00 g is released from rest in a bottle of syrup. Its terminal speed vt is 1.79 cm/s. (a) Presum
    6·1 answer
  • The peak magnetic field strength in a residential microwave oven is 9. 2 x 10-5 t. what is the intensity of the microwave?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!