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
fgiga [73]
3 years ago
6

In terms of the dc current I, how much magnetic energy is stored in the insulating medium of a 3- m-long, air –filled section of

a coaxial transmission line, given that the radius of the inner conductor is 5 cm and the inner radius of the outconductor is 10 cm? Use two methods. One is to take the coaxial line an inductor and calculate the energy using . The other is integrate the energy density over the volume.
Physics
1 answer:
Alexxandr [17]3 years ago
6 0

Answer:

The answer is 138.5

Explanation:

STEP 1:

The inductance per unit length of a coaxial transmission line is

L′=L<em>/ </em>I

 =Ø/H

=μoI/2π In (b/a)

In this a is the radius of inner conductor

b is the radius of outer conductor

I is the coaxial transmission

μ is the magnetic permeability

Since the transmission of the charge exists in air, the value of the relative permeability is μr= I and permeability of free space is μo=  4π x 10-7 H/m . So the magnetic permeability will be

μ = μoμ r

μ =μ o(I) 4π x 10-7 H/m

L′= μoI/2π In (b/a)

  = (4π x 10-7 ) (2)/2π In (10/5)

  =2.77 x 10-7 H

STEP 2:

Obtain the magnetic energy stores in the magnetic field H of a volume of the coaxial transmission line containing a material with permeability μ, by using the formula given below:

Wm= 1/2 LI^2

      = 1/2 (2.77x 10^-7 I^2

      = 138.5 X 10^-9 I^2 J

      Now we will simplify the equation

Wm= 185.5<em>I</em>^2 nJ

So, the magnetic energy stored in insulating medium is 185.5<em>I</em>^2 nJ

You might be interested in
When sediment created by weathering and moved by erosion settles in a different location due to gravity
Stolb23 [73]

Answer:

Deposition

Explanation:

3 0
3 years ago
Read 2 more answers
Which of the following employs the use of an external combustion engine?
just olya [345]
The answer should be ''all the above''
7 0
4 years ago
A hammer is used to hit a nail into a board. Which statement is correct about the forces at play between the nail and the hammer
Montano1993 [528]

Answer:

reviewing the final statements, the correct one is the quarter

The nail exerts an equal force on the hammer in the opposite direction.

Explanation:

This is an action-reaction problem or Newton's third law, which states that forces in naturals occur in pairs.

This is the foregoing, the hammer exerts a force on the nail of magnitude F and it will direct downwards, if we call this action and the nail exerts a force on the hammer of equal magnitude but opposite direction bone directed upwards, each force is applied in one of the bodies.

The difference in result that each force is that the force between the nail exerts a very high pressure (relation between the force between the nail area), instead the area of ​​the hammer is much greater, therefore the pressure is small.

When reviewing the final statements, the correct one is the quarter

The nail exerts an equal force on the hammer in the opposite direction.

6 0
3 years ago
If a 15kg mass weighs 372 N on Jupiter, what is Jupiter's gravitational acceleration?
Dimas [21]

Answer:

Jupiter's gravitational acceleration is 24.8 m/s^2

Explanation:

Recall that the weight under the influence of a gravitational acceleration G is defined as:

Weight = m * G

Then, in our case we have

372 N = 15 kg * G

G = 372/15  m/s^2

G = 24.8 m/s^2

3 0
3 years ago
A force F = (cx - 3.00x^2)i^ acts on a virus as the virus moves along an x axis, with F measured in Newtons, x in meters, and c
Ket [755]

Answer:

c = 4

Explanation:

From work-energy theorem KE = workdone.

Given F = (cx - 3.00x²)i

W = ∫Fdx = ∫(cx - 3.00x²)dx = cx²/2 –3.00x³/3 + A

W = cx²/2 –x³ + A

Where A is a constant

At x = 0, KE = 20J

So W = 20J at x = 0

20 = c×0 - 0 +A

A = 20

So W = cx²/2 –x³ + 20

Also when x = 3.00m, W = KE = 11J

So

11 = c×3²/2 – 3³ + 20

11 = 4.5c – 7

4.5c = 11 + 7

4.5c = 18

c = 18/4.5 = 4

c = 4

6 0
4 years ago
Other questions:
  • Helpppp meeee pleaseeee
    13·1 answer
  • If the radio waves that are sent from the speed gun have a frequency of 400,000,002 Hz and the radio waves reflected off an appr
    14·1 answer
  • You stand17.5 m from a wall holding a baseball. You throw the baseball at the wall at an angle of 20.5∘ from the ground with an
    8·1 answer
  • Anna will wear a black dress when she attends her cousin’s wedding. Which color(s) does the dress absorb?
    8·2 answers
  • a square loop of wire side 3.0 cm carries 3.0 A of current. A uniform magnetic field of magnitude 0.67 T makes an angle of 37 de
    12·1 answer
  • a rollercoaster car is moving 19.8 m/s on flat ground when it’s hits the brakes. it decelerates at -3.77 m/s^2 over the next 45.
    11·1 answer
  • What are three ways in which people use microwaves
    7·2 answers
  • The product of voltage times amperage is known as what?
    8·1 answer
  • An car battery sends an electrical current one direction through a circuit in the car. Based on this, what type of current is a
    12·1 answer
  • A forklift raises a 72-kg crate onto a shelf 3.6 meters above the floor. How much gravitational potential energy does the crate
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!