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
notka56 [123]
1 year ago
8

Two parallel square metal plates that are 1.6 cm apart and 24 cm on each side carry equal but opposite charges uniformly spread

out over their facing surfaces. How many excess electrons are on the negative surface if the electric field between the plates has a magnitude of 18,000 N/C
Physics
1 answer:
Fiesta28 [93]1 year ago
8 0

The amount of extra electrons present on the negative surface is

57.2 x 10^{10}.

Distance =1.6 cm

Side = 24 cm

Electric field = 18000 N/C

Calculating the capacitance in the metal plates is necessary.

Using the capacitance formula

C=\frac{e_{0}A }{d}

Putting the value

C = 8.85 x 10^{-12}x (24 x 10^{-2})^{2}/1.6 x 10^{-2}

C = 0.318 x 10^{-10} F

<h3>Calculation of potential</h3>

V = Ed

V = 18000 x 1.6 x 10^{-2} V

V = 288 V

<h3>Calculation of charge</h3>

Q = CV

Q = 0.318 x 10^{-10} x 288

Q = 91.54 x 10^{-10} C

Charge on the both the plates

Q = +91.54 x 10^{-10}

Q = - 91.54 x 10^{-10}

Calculation of excess electrons on the negative surface:

n = q/e

n = 91.54 x 10^{-10}/ 1.6 x 10^{-19}

n = 57.2 x 10^{10} electrons

Hence, the number of excess electrons on the negative surface is

57.2 x 10^{10}.

Learn more about capacitance here:

brainly.com/question/14746225

#SPJ4

You might be interested in
Which of the following types of radiation can penetrate through paper but not through wood?
andrew-mc [135]
The type of radiation that can penetrate through paper, but not through wood is called beta rays. Beta rays can penetrate paper and air, but a thin piece of alimony can stop it. Gamma can cut through anything except lead and many inches of concrete. Alpha can be stopped by paper and not penetrated. The correct answer is B.
4 0
3 years ago
Read 2 more answers
A mars prototype carrying scientific instruments has a mass of 1060kg. a net force of 52000 n is applied to this roverat a test
Nitella [24]

F = 52000 N

m = 1060 kg

a= F/m = 52000 N/1060 kg = 49.0566 m/s^2

8 0
3 years ago
At a certain instant, the earth, the moon, and a stationary 1160 kg spacecraft lie at the vertices of an equilateral triangle wh
Afina-wow [57]

Answer:

W = 1.22 \times 10^9 J

Explanation:

Initial potential energy of the given spacecraft is given as

U = -\frac{GM_e m}{r} - \frac{GM_m m}{r}

so we have

U = - \frac{Gm}{r}(M_e + M_m)

so we have

M_e = 5.98 \times 10^{24} kg

M_m = 7.35 \times 10^{22} kg

m = 1160 kg

r = 3.84 \times 10^8 m

U = - \frac{(6.67 \times 10^{-11})(1160)}{3.84 \times 10^8}(5.98 \times 10^{24} + 7.35 \times 10^{22})

U = -1.22 \times 10^9 J

now total work done to move it to infinite is given

W = 0 - U

W = 1.22 \times 10^9 J

6 0
3 years ago
Science is the human endeavor to understand the natural world true or flase
hjlf
True yes TRUE
Science may also be defined as the study of surroundings
4 0
3 years ago
Receiving delicious food is to escaping electric shock as ________ is to ________.
natita [175]

Answer:

positive reinforcer; negative reinforcer

Explanation:

positive reinforcer; negative reinforcer

Receiving delicious food can be seen as a positive reinforcer while escaping electric shock can be seen as a negative reinforcer.

6 0
3 years ago
Other questions:
  • A car accelerates from rest to 12 m/s in 4 seconds. What is its acceleration?
    12·1 answer
  • A woman exerts a horizontal force of 4 pounds on a box as she pushes it up a ramp that is 10 feet long and inclined at an angle
    7·1 answer
  • What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?
    15·2 answers
  • A ray diagram is shown
    8·2 answers
  • A person pushes on a 57-kg refrigerator with a horizontal force of 267 N; the - sign indicates that the force points in the +x d
    5·1 answer
  • A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 7.3 m/s . When the balloon is 24 m abo
    10·1 answer
  • A 0.50 mm-wide slit is illuminated by light of wavelength 500 nm.What is the width of the central maximum on a screen 2.0m behin
    8·1 answer
  • Adding heat to matter causes the atoms to _____.
    9·1 answer
  • A man ran a 5 mile race. The race looped around a city park and back
    11·1 answer
  • If a child pulls a sled through the snow with a force of 50 N exerted at an angle of 38° above
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!