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
kolezko [41]
3 years ago
8

A parallel plate capacitor has two plates has a separation d. If I charge it with a +Q and a ????Q on the two plates, respective

ly, what is the electrostatic energy? What is it if I move to 1/2 d?
Physics
1 answer:
EleoNora [17]3 years ago
5 0

Answer:

Explanation:

Electric energy per unit volume

= (1 / 2) x ε₀ E²

Total energy

= energy per unit volume x volume

=  (1 / 2) x ε₀ E² x A d  , A is plate area

= (1 / 2A) x (ε₀ (σ/ε₀)² x A² d) [ E is electric field ]

(1 / 2A) x (ε₀ (σA/ε₀)² X d)

(1 / 2A) x (ε₀ (Q/ε₀)² X d

= (1 / 2A) x (Q²/ε₀) x d

So total energy is proportional to d , distance between plates

if  d is changed to d/2

total energy also becomes half.

(1 / 2A) x (Q²/ε₀) x d / 2

(1 / 4A) x (Q²/ε₀) x d

=

You might be interested in
Which equals 23 kilograms?
Semmy [17]

Answer:

in pounds if would be 50.7 or 50.7063

3 0
3 years ago
Read 2 more answers
Where do you find cations on the periodic table
saw5 [17]

Answer:

Explanation:

The electronic configuration of many ions is that if a closes noble gas to them in a periodic  table.

An Anion is a ion that has gained one or more electron, acquiring a negative charge.

A Cation is a ion that has lost one or more electron, gaining a positive charge.

5 0
3 years ago
5kg mass is attached to a point by a 35 meter rope. The mass isreleased and falls in a circle. If the only forces acting on the
mr_godi [17]

Answer:

Tension at the bottom of the swing T = 52.794N

Explanation:

Detailed explanation and calculation is shown in the image below

8 0
3 years ago
What is a point of view of an object used to determine another object's motion
Finger [1]
<h2><em>A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. You assume that the reference point is stationary, or not moving.</em></h2>
7 0
3 years ago
A solar eclipse that occurs when the new moon is too far from earth to completely cover the sun can be either a partial solar ec
Sonja [21]
1) <span>A solar eclipse that occurs when the new moon is too far from earth to completely cover the sun can be either a partial solar eclipse or an -->
Answer: ANULAR ECLIPSE. Since the moon is too far, it will cover only a part of the sun, and only the external ring of the moon will be visible; this is called anular eclipse.

2) </span><span>anyone looking from the night side of earth can, in principle, see a -->
Answer: LUNAR ECLIPSE. If the moon is the right position, and the Earth's shadow covers partially or totally the moon, then a lunar eclipse occurs.

3) </span><span>during some lunar eclipses, the moon's appearance changes only slightly, because it passes only through the part of earth's shadow called the -->
Answer: PENUMBRA. 

4) </span><span>a ... can occur only when the moon is new and has an angular size larger than the sun in the sky -->
Answer: TOTAL SOLAR ECLIPSE. When the moon is new, it means it is between the sun and the Earth, and its dark side faces the Earth. If the moon's angular size is also larger than the sun angular size, than it will completely cover the sun, and a total solar eclipse occurs.

5) </span><span>a partial lunar eclipse begins when the moon first touches earth's --> 
Answer: SHADOW. The Earth's shadow will start to cover the moon, and partial lunar eclipse will start.

6) </span><span> a point at which the moon crosses earth's orbital plane is called a(n)  --> 
Answer: NODE. Eclipses occur only when the Moon is at or close to a node, otherwise sun, earth and moon are not "aligned".</span>
5 0
3 years ago
Other questions:
  • You know that you sound better when you sing in the shower. This has to do with the amplification of frequencies that correspond
    11·1 answer
  • Before leaving the house in the morning, you plop some stew in your slow cooker and turn it on Low. The slow cooker has a 160 Oh
    8·1 answer
  • Why should you never use the coarse adjustment on high power
    9·1 answer
  • Which rock is made mostly of dark, fine-grained silicate minerals, chiefly plagioclase feldspar and pyroxene, and magnetite?
    5·1 answer
  • The discovery of photons is an example of which aspect of electromagnetic radiation?
    12·2 answers
  • Describe how a convection cell is created in the mantle of the Earth.
    15·2 answers
  • Someone help me is physics
    7·1 answer
  • Un vagón de 250 kg situado en la cima de una montaña rusa inicia su descenso por una rampa inclinado 60º sobre la horizontal. Si
    5·1 answer
  • Throw a rock horizontally at 22 m/s from a 315 m tall building. How far from the base of the building will it land?​
    14·1 answer
  • The water is flowing through the horizontal constricted pipe. The pressure at one end is 4500Pa, speed is 3m/s and area of cross
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!