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
tigry1 [53]
2 years ago
10

The diameter of 0-gauge copper wire is 8.252 mm. Find the resistance of a 1.00-km length of such wire used for power transmissio

n.
Physics
1 answer:
Dafna1 [17]2 years ago
5 0

Answer:

The value is R = 0.321 \ \Omega

Explanation:

From the question we are told that

   The diameter is  d =  8.252 \  mm  =  0.008252 \  m

    The length of the wire is  l =  1.0 \  km  =  1000 \  m

   Generally the cross sectional area of the copper wire is mathematically represented as

           A  = \pi * \frac{d^2}{4}

=>        A  =  3.142  * \frac{ 0.008252^2}{4}

=>         A  =  5.349 *10^{ - 5} \  m^2

Generally the resistance is mathematically represented as

      R =  \frac{\rho  *  l }{A }

Here \rho is the resistivity of copper with the value  \rho =  1.72*10^{-8} \ \Omega \cdot m

=>    R =  \frac{1.72 *10^{-8}  *   1000 }{5.349 *10^{ - 5}  }

=>    R = 0.321 \ \Omega

You might be interested in
Why do we see the color black?
Inessa [10]
We see black colour in absence of light. Black colour absoorbs all the light, ( just opposite of white) and hence we do not see any colour. Black colour is also related to darkness.
5 0
3 years ago
What is number 14 please tell me
UNO [17]
<span>a thin fibrous cartilage between the surfaces of some joints, e.g., the knee.</span>
3 0
3 years ago
Phobos's Orbit. Phobos orbits Mars at a distance of 9,380 km from the center of the planet and has a period of 0.3189 days. Assu
Elenna [48]

Answer:

Explanation:

The relation between time period of moon in the orbit around a planet can be given by the following relation .

T² = 4 π² R³ / GM

G is gravitational constant , M is mass of the planet , R is radius of the orbit and T is time period of the moon .

Substituting the values in the equation

(.3189 x 24 x 60 x 60 s)²  = 4 x 3.14² x ( 9380 x 10³)³ / (6.67 x 10⁻¹¹ x M)

759.167 x 10⁶ = 8.25 x 10²⁰ x 39.43 / (6.67 x 10⁻¹¹ x M )

M = .06424  x 10²⁵

= 6.4 x 10²³ kg .

4 0
2 years ago
A ball is projected with an initial velocity of 40 meter per second and reached maximum height of 160 meters calculate tge angle
Andru [333]

There's a problem with the question as given. Even with a maximum projection angle of <em>θ</em> = 90°, the initial velocity is not large enough to get the ball up in the air 160 m. With angle 90°, the ball's height <em>y</em> at time <em>t</em> would be

<em>y</em> = (40 m/s) <em>t</em> - 1/2 <em>g t</em> ²

Set <em>y</em> = 160 m, and you'll find that there is no (real) solution for<em> t</em>, so the ball never attains the given maximum height.

From another perspective: recall that

<em>v </em>² - <em>v</em>₀² = 2<em>a </em>∆<em>y</em>

where

• <em>v</em>₀ = initial velocity

• <em>v</em> = final velocity

• <em>a</em> = acceleration

• ∆<em>y</em> = displacement

At its maximum height, the ball has zero vertical velocity, and ∆<em>y</em> = maximum height = 160 m. The ball is in free fall once it's launched, so <em>a</em> = -<em>g</em>.

So we have

0² - (40 m/s)² = -2<em>g </em>(160 m)

but this reduces to

(40 m/s)² = 2 (9.8 m/s²) (160 m)

1600 m²/s² ≠ 3136 m²/s²

7 0
3 years ago
The unit meters corresponds to what variable
Sati [7]

Do you have any options? My guess would be distance but I could be wrong.

7 0
3 years ago
Other questions:
  • Two masses, A and B, are attached to different springs. Mass A vibrates with an amplitude of 8 cm at a frequency of 10 Hz and ma
    12·1 answer
  • Changing your toilet can reduce water pollution because _______.
    14·2 answers
  • When you go for a walk which of the following forces is paired with the force of friction on your shoe
    13·1 answer
  • Each ball has a negligible size and a mass of 11.5 kg and is attached to the end of a rod whose mass may be neglected. The rod i
    8·1 answer
  • A 0.200-m uniform bar has a mass of 0.795 kg and is released from rest in the vertical position, as the drawing indicates. The s
    15·1 answer
  • Use the drop-down menus to complete the paragraph,
    5·2 answers
  • The largest watermelon ever grown had a mass of 118 kg. Suppose this watermelon were exhibited on a platform 5.00 m above the gr
    10·1 answer
  • what is the position of centre of curvature for concave and convex mirror show with the help of diagram if you can​
    5·1 answer
  • ...
    15·1 answer
  • A bullet is shot from a rifle with a speed of 3,015 feet per second. Assuming the billet moves at a constant velocity what is th
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!