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
ollegr [7]
3 years ago
13

A parallel-plate capacitor has plates of area A. The plates are initially separated by a distance d, but this distance can be va

ried. The capacitor is connected to a battery.
a) What should the plate separation be if you want to halve the capacitance.

b)What should the plate separation be if you want to halve the capacitance.

c)What should the plate separation be if you want to halve the charge stored?

d) What should the plate separation be if you want to halve the charge stored?

e)What should the plate separation be if you want to halve the energy stored?

f)What should the plate separation be if you want to halve the energy stored?

g)What should the plate separation be if you want to halve the energy density?
Physics
1 answer:
makkiz [27]3 years ago
3 0

Answer:

a) In a parallel plate capacitor the capacitance is

C = \frac{Q}{V} = \epsilon_0\frac{A}{d}

So, in order to halve the capacitance the plate separation should be twice the original distance.

b) Same question as (a).

c) According to the above equations, the charge stored in a capacitor is directly proportional to the plate separation.

\frac{Q}{V} = \frac{A}{d}

In order to halve the charge stored the plate separation should be half the original distance.

d) Same question as (c).

e) The energy stored in a capacitor is

U = \frac{1}{2}CV^2 = \frac{1}{2}\epsilon_0\frac{A}{d}(Ed)^2 = \frac{1}{2}\epsilon_0AE^2d

In order to halve the energy stored in the capacitor, the plate separation should be twice the original distance.

f) Same question as (e).

g) The energy density is given by the following equation

u = \frac{\frac{1}{2}CV^2}{Ad} = \frac{\frac{1}{2}\epsilon_0\frac{A}{d}(E^2d^2)}{Ad} = \frac{1}{2}\epsilon_0E^2.

As it turns out, the energy density is independent from the geometric factors. This makes sense, because the electric field in a parallel field capacitor is independent from the distance.

You might be interested in
Consider an experiment in which slow neutrons of momentum ¯hk are scattered by a diatomic molecule; suppose that the molecule is
madreJ [45]

Answer:

Check the explanation

Explanation:

When we have an object in periodic motion, the amplitude will be the maximum displacement from equilibrium. Take for example, when there’s a back and forth movement of a pendulum through its equilibrium point (straight down), then swings to a highest distance away from the center. This distance will be represented as the amplitude, A. The full range of the pendulum has a magnitude of 2A.

position = amplitude x sine function(angular frequency x time + phase difference)

x = A sin(ωt + ϕ)

x = displacement (m)

A = amplitude (m)

ω = angular frequency (radians/s)

t = time (s)

ϕ = phase shift (radians)

Kindly check the attached image below to see the step by step explanation to the question above.

3 0
3 years ago
The law of inertia applies to objects
Anestetic [448]

Answer:

<em>at</em><em> </em><em>rest</em><em> </em><em>and</em><em> </em><em>in</em><em> </em><em>motion</em>

Explanation:

<em>The</em><em> </em><em>law</em><em> </em><em>of</em><em> </em><em>inertia</em><em> </em><em>applies</em><em> </em><em>to</em><em> </em><em>objects</em><em> </em><em>at</em><em> </em><em>rest</em><em> </em><em>and</em><em> </em><em>in</em><em> </em><em>motion</em>

6 0
3 years ago
Read 2 more answers
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station
katrin2010 [14]

Answer:

4462.0927 W

Explanation:

\epsilon = Emissivity of the panel = 1

\sigma = Stefan-Boltzmann constant = 5.67\times 10^{-8}\ W/m^2K^4

T = Temperature = (273.15+6)

Area of the panel is given by

A=2\times 1.8\times 3.6\\\Rightarrow A=12.96\ m^2

The power radiated is given by

P=\epsilon \sigma AT^4\\\Rightarrow P=1\times 5.67\times 10^{-8}\times 12.96\times (273.15+6)^4\\\Rightarrow P=4462.0927\ W

The power radiated from each panel is 4462.0927 W

5 0
3 years ago
1) Which of the following is the best definition of the scientific method?
zysi [14]
D is the correct answer
5 0
3 years ago
How does a resistor affect the speed of the current that passes through it?
Maksim231197 [3]
A resistor DECREASES the speed of current as a resistors job is to resist the flow of electrons
8 0
3 years ago
Read 2 more answers
Other questions:
  • A pipe of length 6.8 m is closed at one end and sustains a standing wave at its second overtone. determine the distance between
    13·1 answer
  • The vector quantity that defines the distance and direction between two positions. It is a change in your position.
    15·1 answer
  • Argon, neon, and xenon are examples of
    9·1 answer
  • Scientists believe that there are three genes that contribute to skin color in humans. Which of these best describes the inherit
    5·2 answers
  • Greg is in a car at the top of a roller-coaster ride. The distance, d, of the car from the ground as the car descends is determi
    11·1 answer
  • What occurred while the surface rocks of the Moon were impacted, creating a fine dust?
    11·2 answers
  • Why do atoms form bonds? A. to decrease the number of electron shells in an atom B. to increase the number of electrons orbiting
    11·1 answer
  • A ball is thrown so that its initial vertical and horizontal components of velocity are 30 m/s and 15 m/s, respectively. Estimat
    7·1 answer
  • When a substance easily dissolves in a liquid, it has high solubility in that liquid. When a substance does not easily dissolve
    7·1 answer
  • What would be the acceleration in a bus moving with uniform velocity and why​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!