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
34kurt
3 years ago
14

A budding electronics hobbyist wants to make a simple 1.3 nF capacitor for tuning her crystal radio, using two sheets of aluminu

m foil as plates, with a few sheets of paper between them as a dielectric. The paper has a dielectric constant of 4.5, and the thickness of one sheet of it is 0.20 mm. If the sheets paper measures 27 cm x 36 cm and she cuts the aluminum foil to the same dimensions, how many sheets of paper should she use between her plates to get the proper capacitance?
Physics
2 answers:
steposvetlana [31]3 years ago
6 0

Answer:

13 sheets

Explanation:

Capacitance of capacitor C = εA/d where C = 1.3 nF = 1.3 ×10⁻⁹ F, ε = permittivity of paper = 4ε₀, ε₀ = 8.854 × 10⁻¹² C²N⁻¹m⁻¹ , A =area of paper sheets = 27 cm x 36 cm = 972 cm ² = 0.0972 m² and d = distance between aluminium foils = number of sheets,n × thickness of sheet, t = nt , t = 0.20 mm = 0.2 × 10⁻³ m

C = εA/d = 4ε₀A/nt

n = 4ε₀A/Ct = 4 × 8.854 × 10⁻¹² C²N⁻¹m⁻¹ × 0.0972 m²/(1.3 ×10⁻⁹ F × 0.2 × 10⁻³ m) = 13.24 ≅ 13 sheets

Marizza181 [45]3 years ago
3 0

Answer:

15sheets

Explanation:

Formula fie calculating the capacitance of a capacitor is expressed as;

C =εA/d where;

C is the capacitance of the capacitor = 1.3nF = 1.3 × 10^-9F

ε is the permittivity of the paper

If ε₀ = permittivity of free space = 8.854 × 10⁻¹² C²N⁻¹m⁻¹

ε = 4.5ε₀ = 4.5×8.854 × 10⁻¹² C²N⁻¹m⁻¹

ε = 39.843× 10⁻¹² C²N⁻¹m⁻¹

A is the area of the plates

A = 27cm×36cm

A = 0.27×0.36

A = 0.0972m²

d is the distance between the plates.

d = number of paper between the plates n × thickness t

d = nt

If t = 0.2mm

t = 0.0002m

d = 0.0002n

Substituting the given datas into the formula to get n, we have;

1.3×10^-9 = 39.843 × 10⁻¹²(0.0972)/0.0002n

1.3×10^-9 × 0.0002n = 39.843 × 10⁻¹² × 0.0972

2.6×10^-13n = 3.87×10⁻¹²

n = 3.87×10⁻¹²/2.6×10^-13

n = 1.49×10¹

n = 14.9/approximately 15sheets

You might be interested in
A transformer is designed to convert the voltage from 240 V to 12 V, and has 4000 turns on its primary coil. The turns on its se
harkovskaia [24]

Answer:

yaayyaysysysa

Explanation:

gsgssggsgsgsysyshehsh

4 0
2 years ago
Suppose you had the same laser and diffraction grating from the previous question but now you had a flat detection screen. You w
kolezko [41]

Answer:

measuring the zero intensity point, we can deduce the movement of the screen.

The distance from the center of the pattern to the first zero is proportional to the distance to the screen,

Explanation:

The expression for the diffraction phenomenon is

           a sin θ = m λ

for the case of destructive interference. In general the detection screen is quite far from the grid, let's use trigonometry to find the angles

           tan θ = y / L

     

in these experiments the angles are small

          tan θ = sin θ / cos θ = sin θ

          sunt θ = y / L

we substitute

          a \frac{y}{L}= m  λ

           y = m L λ / a

therefore, by carefully measuring the zero intensity point, we can deduce the movement of the screen.

 

The distance from the center of the pattern to the first zero is proportional to the distance to the screen, so you can know where the displacement occurs, it should be clarified that these displacements are very small so the measurement system must be capable To measure quantities on the order of hundredths of a millimeter, a micrometer screw could be used.

4 0
2 years ago
Name two things that the people standing on the street corner would say are in motion
timurjin [86]
People, and cars
is the right answer!!!!!!!!!!!!!!!!!!!!!!!!!!
8 0
3 years ago
On sunday a strong gale blows near beth’s house. the best estimate for the wind speed is ____ miles/hour.
Rufina [12.5K]

Answer:

B. 47-54 miles/hour

Explanation:

Gale is a strong wind which is depicted by red warning flag. According to U.S. National Weather Service gale is a sustained surface wind. It is also used to refer winds from tropical coastal areas.

On the basis of force of wind gale is divided in four groups:

  1. Near gale   - 32-38 mph
  2. Gale            - 39-46 mph
  3. Strong gale - 47-54 mph
  4. Storm           - 55-63 mph
8 0
3 years ago
Jaden has a mass of 45 kilograms on Earth. Jupiter has more gravity than the Earth. On Jupiter, Jaden's mass will be O more than
Dovator [93]

Answer:

m = 45 kg

Explanation:

Given that,

Mass of Jadan, m = 45 kg on Earth

Jupiter has more gravity than the Earth.

Mass of an object is the amount of matter contained inside an object. We need to tell about the mass of Jaden on Jupiter. The mass of the object remains same everywhere.It does not change in any of the location.

Hence, Jaden's mass will be 45 kg on Jupiter.

7 0
2 years ago
Other questions:
  • Homework 7 Adaptive Follow-Up Problem 25.68 Item 4 Constants A cylindrical copper cable 3.30 km long is connected across a 220.0
    13·1 answer
  • Which sets of data show a wave with the shortest wavelength? A. Speed=100 million m/s and frequency = 50 million Hz. B. Speed=15
    12·1 answer
  • 3 similar things between HIIT,CrossFit y Bodyweight
    14·1 answer
  • Space-faring astronauts cannot use standard weight scales (since they are constantly in free fall) so instead they determine the
    10·1 answer
  • A major difference between AC and DC electricity is that A) the current in AC electricity varies in magnitude and direction. B)
    9·2 answers
  • Please help with my geology hw
    11·1 answer
  • Based on the graph, which data point is most likely to have experimental
    6·1 answer
  • A stalled car is being pushed up a hill at constant velocity by three people. The net force on the car is Group of answer choice
    8·1 answer
  • Diagram... At which location would the moon most likely be in a FULL MOON phase (all of the lit side visible)? *
    11·1 answer
  • How do magnets work and what effect do they have on their surroundings?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!