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
The _________ specifies the station that sent the frame.
german

<span>Ans: The source Address field specifies the station that sends the frame. 

The format of an Ethernet frame includes a destination address at the beginning which contains the address of the device which is sending the frame. And, the source address tells us which station the information is received from. </span>

3 0
3 years ago
What are the factors that effect the strength of a frictional force???
seropon [69]

If you write down the formula for friction, you will get an answer.

Ff = u * N               Where N is a push down force that an object experiences.

                              u (mu) is a constant and has no units

It may not be accelerating and still experience friction. A is not correct.

Color and Density will not affect the frictional force. B is not so.

Buoyant forces are a different thing altogether. Generally friction has nothing to do with them. C is incorrect.

The last one is your answer. Technically mg should be the answer and not mass, but the second part is correct.

5 0
3 years ago
how much does a bookshelf weigh if the movers are pushing it at a speed of 10 m/s^2 by applying 100 N force
Delicious77 [7]

Answer:

10 kg

Explanation:

Assuming a frictionless surface, then force F=ma where F is the applied force, m is the mass and a is acceleration. Making m the subject of the formula then m=\frac {F}{a}

Substituting 100 N for the applied force F and 10 m/s^2 for acceleration a then the value of m will be m=\frac {100}{10}=10\ kgs

Therefore, in terms of kilograms, the bookshelf weighs 10 Kg

7 0
3 years ago
An instrument that measures air pressure using a partially evacuated chamber is called a(n ________ barometer.
Jet001 [13]
The appropriate response is the Aneroid barometer. This kind of gauge has an incompletely cleared chamber that progressions shape, packing as barometrical weight increments and growing as weight declines.

I hope the answer will help you. 
6 0
3 years ago
Part of a neutralization reaction between an acid and a base is shown below. What is the second product of the reaction?
icang [17]
Salt compound. it is a double displacement
8 0
3 years ago
Read 2 more answers
Other questions:
  • An automobile with a radio antenna 1.0 m long generates an emf, V1, since it is traveling at 100.0 km/h in a location where the
    14·2 answers
  • In an overhead camshaft engine, the lobes make direct contact with the 
    15·2 answers
  • The force needed to keep a car from skidding on a curve varies jointly as theweight of the car and the square of the car’s speed
    7·1 answer
  • PLEASE HELP Which landforms can be associated with the three types of plate boundaries?
    7·1 answer
  • After four half-lives of decay, what is the ratio of radioactive parent isotope to stable daughter isotope?
    6·1 answer
  • "A hiker starts at point P and walks 2.0 kilometers due east and then 1.4 kilometers due north. The vectors in the diagram below
    12·1 answer
  • A ball is projected upward at time t = 0.0 s, from a point on a roof 90 m above the ground. The ball rises, then falls and strik
    5·1 answer
  • How long would it take for a car to travel 22km if it has an average speed of 55 km/hr
    12·1 answer
  • A consequence of yo-yo dieting is what
    7·1 answer
  • How would you measure the volume of an oddly shaped object
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!