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
Phoenix [80]
3 years ago
13

A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.70 cm wide and 12.0 m long. Between the sheets is a mic

a strip of the same width and length that is 0.0225 mm thick.
What is the maximum charge that can be stored in this capacitor? (The dielectric constant of mica is 5.4, and its dielectric strength is 1.00 \times 10^8 \;{\rm{V}}/{{\rm{m}}})

Qmax= ??mC
Physics
1 answer:
KIM [24]3 years ago
4 0

Answer:

2.121876 mC

Explanation:

\epsilon_0 = Permittivity of free space = 8.85\times 10^{-12}\ F/m

A = Area = 0.037\times 12\ m^2

d = Thickness = 0.0225 mm

E = Dielectric strength = 1\times 10^8\ V/m

k = Dielectric constant = 5.4

Capacitance is given by

C=\dfrac{k\epsilon_0A}{d}\\\Rightarrow C=\dfrac{5.4\times 8.85\times 10^{-12}\times 0.037\times 12}{0.0225\times 10^{-3}}\\\Rightarrow C=9.43056\times 10^{-7}\ F

Maximum voltage is given by

V_m=E_md\\\Rightarrow V_m=1\times 10^8\times 0.0225\times 10^{-3}\\\Rightarrow V_m=2250\ V

Maximum charge is given by

Q_m=CV_m\\\Rightarrow Q_m=9.43056\times 10^{-7}\times 2250\\\Rightarrow Q_m=0.002121876\ C=2.121876\ mC

The maximum charge that can be stored in this capacitor is 2.121876 mC

You might be interested in
How did early chemists determine which substances were elements
Jlenok [28]
Chemistry deals with the study of elements-- their properties, chemical reactions and their compounds. This science includes the study of how these elements or compounds are formed. The history of chemistry is divided to 4 periods. 
Black Magic, Alchemy, Traditional Chemistry and Modern Chemistry comprised these periods.
How did the early chemists determine which of the substances are elements? Long time ago, chemists knew which substances could not be broken down and that mixtures are broken down through chemical means. Through the said process, they were able to identify which are elements from the substances they have tested.

6 0
3 years ago
If an automobile's velocity changes from 25 m/s to 15m/s in 2s, then what is its acceleration?
tekilochka [14]
Hey!

u=25m/s
v=15m/s
t=2s
a=?

v-u=at
15-25=a×2
-10=2a
-10/2=a
a=-5m/s^2

Hope it helps...!!!
8 0
4 years ago
A solenoid with a ferromagnetic core is called a circuit.
FrozenT [24]
It's False. Because it's electromagnet NOT circuit. I'd go with False if I were youSorry if you  get it wrong. Hope this helps.
5 0
3 years ago
A cylindrical tube has an inner radius of r1 and an outer radius of r2. Using the heat equation, derive an expression for the st
PIT_PIT [208]

Answer:

see attachment

Explanation:

7 0
3 years ago
Car a is heading north with a velocity of 14 m/s. car b is traveling north also, with a velocity of 19 m/s. what is the relative
kicyunya [14]
a.)  Relative velocity = velocity of car B - velocity of car A
                             = 19 - 14
                             = 5 m/s
Hope this cleared your doubt, feel free to ask any question regarding this and have a nice day ahead! :)
6 0
4 years ago
Read 2 more answers
Other questions:
  • A large, cylindrical water tank with diameter 2.40 m is on a platform 2.00 m above the ground. The vertical tank is open to the
    15·1 answer
  • Which example illustrates a chemical change?
    11·2 answers
  • A person pushes horizontally with a force of 180. N on a 67.0 kg crate to move it across a level floor. The coefficient of kinet
    5·1 answer
  • How does luminosity and temperature correlate to the mass of a star?
    13·1 answer
  • Issac newton developed the universal law of
    9·1 answer
  • Why do most weather systems in the United States move from west to east?
    8·2 answers
  • Which is a characteristic of projectile motion?
    5·2 answers
  • Explain how a submarine<br> floats on the water surface<br> and dives down into water.
    7·1 answer
  • The Moon's appearance as seen from Earth during the 28-day lunar cycle. You can see how the changes happen by looking at the Sun
    8·2 answers
  • A baseball is thrown at angle of 65 degrees with an initial velocity of 45 m/s. How long will the baseball remain in the air?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!