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
damaskus [11]
3 years ago
12

Two 10cm diameter metal disks separated by a 0.63mm thick piece of pyrex glass are charged to a potential difference of 1000V. D

ialectric constant for pyrex is K=4.7. What is the surface charge density on the disks?
Physics
1 answer:
inessss [21]3 years ago
5 0
Parallel-plate capacitor has there fore formula is

<span>C=(<span>ϵ0</span>A)/d
putting values</span>C=(8.85*10^-12*pi*.05^2)/.00063
=1.1*10^-10F then Q=CV=1.1*10^-10*1000=1.1*10^-7C 
as
<span>η=Q/A</span><span>therefore
(1.1*10^-7)/(pi*.05^2)
=1.4*10^-5C/m^ our answer
hope this helps</span>
You might be interested in
A 1.0 × 10^3 kg sports car is initially traveling at 15 m/s. The driver then applies the brakes for several seconds so that -25
algol13

Answer:

Ea = 112500[J]

Eb = 87500[J]

Explanation:

To solve this problem we must use the principle of energy conservation which tells us that the energy of a body plus the work done or applied by the body equals the final energy of a body.

This can be easily visualized by the following equation:

E_{A}+E_{friction}=E_{B}

Now we must define the energies at points A & B.

<u>For point A</u>

At point A we only have kinetic energy since it moves at 15 [m/s]

So the kinetic energy

E_{A}=\frac{1}{2}*m*v_{A}^{2}  \\E_{A}=\frac{1}{2} *1000*(15)^{2} \\E_{A}=112500[J]

The final kinetic energy can be calculated as follows:

112500-25000=E_{B}\\E_{B}=87500[J]

8 0
3 years ago
When a scale goes by so fast we almost can't hear the individual notes, it's called
atroni [7]
It's called d. a glissando (glissando means "to slide" - which is how you play one)
6 0
3 years ago
Read 2 more answers
Which parts of an electric generator are connected?
Anna71 [15]

Answer:

the armature and commutator          

Explanation:

An electric generator converts mechanical energy to electrical energy. It is based on the principle that when a conducting coil rotates in the magnetic field, an electric current is generated.

The rotating part is known as Armature. Commutator is cylindrical in shape and connected to armature which rotates with it. It also connects the armature to the external circuit by brushes.

Slip rings are connected to armature coil to maintain an electrical contact with the brushes.

7 0
3 years ago
Read 2 more answers
What is Matter? write its types​
Rus_ich [418]

According to definition of general chemistry matter is any substance which has atleast a mass and occupies a volume.

Matter is of three types

  1. Solid
  2. Liquid
  3. Gas
7 0
2 years ago
A gust of wind pushes a beach ball with a force of 9 newtons. the ball rolls 10 meters in 3 seconds. what is the power of the wi
guajiro [1.7K]
P = W/t

P power
W work
t Time

6 0
3 years ago
Read 2 more answers
Other questions:
  • With what scientific discovery is sir isaac newton most commonly associated? the theory of gravity boyle's law heliocentrism
    11·2 answers
  • A.
    6·1 answer
  • Where do Earth’s convection currents occur
    7·1 answer
  • Higher mass protostars enter the main sequence: at the same rate, but at a higher luminosity and temperature. slower and at a lo
    7·1 answer
  • We had an experiment that is entitled "balloon rocket" it is an experiment using the force of balloon to make the straw move. it
    5·1 answer
  • A projectile is fired vertically from Earth's surface with an initial speed v0. Neglecting air drag, how far above the surface o
    7·1 answer
  • Rama's weight is 4okg: She is carrying a load of 20kg up to a height of 20 meters.what work does she do?Also mention its type of
    11·1 answer
  • Optimists usually have a higher degree of wellness than pessimists.<br> O True<br> False
    15·1 answer
  • Part D
    7·1 answer
  • 1. A drag racer accelerates from rest at 18ft/sec^2. How long does it take to acquire a speed of 60mph? What is required?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!