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
Effectus [21]
3 years ago
7

Suppose a capacitor is fully charged by a battery and then disconnected from the battery. The positive plate has a charge +q and

the negative plate has a charge −q.The plate area is doubled, and the plate separation is reduced to half its initial separation.
a) What is the new charge on the negative plate?
Physics
1 answer:
dimaraw [331]3 years ago
8 0

Answer:-q

Explanation:

Given

Capacitor is charged to a battery and capacitor acquired a charge of q i.e.

+q on Positive Plate and -q on negative Plate.

If the plate area is doubled and the plate separation is reduced to half its initial separation then capacitor becomes four times of initial value because capacitor is given by

c=\epsilon_0 \cdot \frac{A}{d}

where A=area of capacitor plate

d=Separation between plates

This change in capacitance changes the Potential such that new charge on the negative plate will remain same -q

You might be interested in
A cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces.
laiz [17]

Answer:

The electric flux is zero through four cube surfaces given that a cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces.

Explanation:

Assuming the charged filament is quite long and you are not near the edges, the two opposing sides that the filament travels through have no flux. If the charge filament is long, which you may assume is indefinitely long, then there is the equal amount of charge on the left and right of where you are, therefore the electric field has no preference for left or right. This implies that the electric field can only travel in or out of the filament. No field lines run through the two faces of the cube that the filament goes through if the electric field is not moving left or right. There are electric field lines on the four sides of the filament.

To learn more about cubical gaussian surface and electric flux. Click brainly.com/question/13003911

#SPJ4

7 0
2 years ago
_______is stored energy
Lyrx [107]

Answer:

Kenetic

Explanation:

Potentiak is at the start

kenetic is stores energy being released

6 0
2 years ago
Read 2 more answers
Unpolarized light is passed through an optical filter that is oriented in the vertical direction.
VashaNatasha [74]

In order to solve this problem it is necessary to apply the concepts related to intensity and specifically described in Malus's law.

Malus's law warns that

I = I_0 cos^2\theta

Where,

\theta= Angle between the analyzer axis and the polarization axis

I_0 =Intensity of the light before passing through the polarizer

The intensity of the beam from the first polarizer is equal to the half of the initial intensity

I = \frac{I_0}{2}

Replacing with our the numerical values we get

I = \frac{46}{2}

I = 23W/m^2

Therefore the  intensity of the light that emerges from the filter is 23W/m^2

5 0
3 years ago
Which way does wind blow
prisoha [69]
I think it blows vertically and horizontally cause wind can blow different directions
5 0
3 years ago
Read 2 more answers
A grasshopper leaps into the air at a 62° angle above the horizontal, and follows a parabolic arc in free fall after it leaves t
harina [27]

Answer:

d. None of the above.

Explanation:

In a parabolic motion, you have that in the complete trajectory the component velocity is constant and the vertical component changes in time. Then, the total velocity vector is not zero.

In the complete trajectory the gravitational acceleration is always present. Then, the grasshopper's acceleration vector is not zero.

At the top of the arc the grasshopper is not at equilibrium because the gravitational force is constantly acting on the grasshopper.

Then, the correct answer is:

d. None of the above.

5 0
3 years ago
Other questions:
  • A mining crew extracted two different types of minerals from underground. Then, they transferred the same amount of energy into
    11·2 answers
  • The automobile has a weight of 2700 lb and is traveling forward at 4 ft>s when it crashes into the wall. If the impact occurs
    10·1 answer
  • How does a merry go round use potential and kinetic energy
    7·1 answer
  • If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the
    10·2 answers
  • If two objects collide and one is initially at rest, is it possible for both to be at rest after the collision? Is it possible f
    7·1 answer
  • A car starts moving after waiting for a traffic light to turn green. It is able to travel a distance of 300 meters in 10 seconds
    14·2 answers
  • A point charge of 6.30 uC is lecated 15.0 cm from a second point charge of-4.80 yC. The force on the 6.30 juC charge is
    15·1 answer
  • Who proposed the idea that gravity could actually bend light?
    8·1 answer
  • Cuando es más confiable el valor central de una medición
    10·1 answer
  • Identify the energy transformation that occurs in the light bulb of a lamp:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!