the national electric code specifies a maximum current of 10 a in 16- gauge (0.129 cm diameter) copper wire. what is the corresponding current density?

Answers

Answer 1

The answer is  761.4 A/cm^2.

To calculate the corresponding current density in the 16-gauge copper wire, we need to determine the cross-sectional area of the wire and divide the maximum current by this area. Here are the steps:

1. Calculate the radius of the wire:

  Radius = (0.129 cm) / 2 = 0.0645 cm

2. Convert the radius to meters:

  Radius = 0.0645 cm = 0.000645 m

3. Calculate the cross-sectional area of the wire using the formula for the area of a circle:

  Area = π * (radius)^2 = π * (0.000645 m)^2

4. Calculate the maximum current density by dividing the maximum current by the cross-sectional area:

  Current Density = Maximum Current / Area

Given:

Maximum Current = 10 A

By substituting the values into the equation, we can calculate the current density:

Current Density = 10 A / (π * (0.000645 m)^2)

By evaluating this expression, you can determine the corresponding current density in the 16-gauge copper wire.

The cross-sectional area of a wire with diameter d is given by:

A = πd^2/4

For a 16-gauge copper wire, the diameter is 0.129 cm. Thus, the cross-sectional area is:

A = π(0.129 cm)^2/4 = 0.01315 cm^2

The maximum current of 10 A corresponds to a current density of:

J = I/A = 10 A/0.01315 cm^2 = 761.4 A/cm^2

Therefore, the corresponding current density is 761.4 A/cm^2.

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Related Questions

3.Minsoo is training for cross-country in the fall. He ran 5 miles east. Then he turned around and ran 4 miles west. Draw and label the vectors that show each segment of his trip and the resultant displacement vector. Find his resultant displacement. (10 points)

Answers

Answer:

...............................

Why is it that a car traveling in the opposite direction as the car in which you are riding on the freeway often looks like it is moving faster than the speed limit?

Answers

It’s because of the theory of special relativity:
Object moving faster than your view actually move through time quicker.
Einstein actually proved this. Pretty neat

mineral salt compounds (calcium chloride, table salt)

Answers

Answer:

Chloride and Salt

Explanation:

that make up table salt, a.k.a. sodium chloride (NaCl). ... As sodium chloride (NaCl) or calcium chloride (CaCl2) dissolve in water, ... the compound formed when a positive ion combines with a negative ion out of solution, but ... waters may have more if there is weathering or leaching from nearby mineral-rich soils and rocks.

The structure of an atom consists of
A. a proton surrounded by neutrons
B. a nucleus surrounded by electrons
C. a nucleus containing protons and electrons
D. a "cloud" of protons, electrons, and neutrons

Answers

Answer:

the correct answer is C

Explanation:

a nucleus of atom is contain protons and electrons

A line with a negative slope on a distance-time graph means the object is?​

Answers

Answer:negative slope or gradient I think

Explanation:

a line with any negative slope on a distance time graph means that the object is moving at a constant speed (if the line is straight) but in the reverse discretion.

difference between the fertility rate and mortality rate of developed and least development countries
3/3 points.​

Answers

Answer:

The replacement fertility rate is indeed only slightly above 2.0 births per woman for most industrialized countries (2.075 in the UK, for example), but ranges from 2.5 to 3.3 in developing countries because of higher mortality rates, especially child mortality. pls give brainlest

What is the kinetic energy of the ball as it is half way through the fall?

Answers

Therefore, the kinetic energy of the ball will be equal to the potential energy of the ball at minus the potential energy of the ball at . i.e. It is a common sense as the ball has fallen halfway, half of its potential energy is converted into the kinetic energy


The greater the mass of an object.

Answers

Answer:

Mass is the measure of an object's matter (what it's made up of). The greater an object's mass, the greater its gravitational force. The earth has a strong attracting force for objects with smaller mass (including the moon), and the sun has an attracting force on the earth and other planets in our solar system.

A box of books weighing 315 N is shoved across the floor by a force of 477 N exerted downward at an angle of 35° below the horizontal. If the coefficient of kinetic friction between the box and the floor is 0.58, how long does it take to move the box 4.20 m starting from rest?

Answers

Answer:

It takes 1.14 s to move the box 4.20 m.

Explanation:

Using Newton's second law we have:

[tex]Fcos(35)-F_{f}=ma[/tex]

[tex]Fcos(35)-\mu mg=ma[/tex]

F is the force exerted and m the mass of the books

[tex]Fcos(35)-\mu mg=ma[/tex]

[tex]477cos(35)-(0.58*315)=\frac{315}{9.81}a[/tex]

So, the books accelerate at:

[tex]a=6.48\: m/s^{2}[/tex]

We know that the initial velocity is zero, so using the kinematic position equation, we have:

[tex]x=\frac{1}{2}at^{2}[/tex]

So, we just need to solve the equation for t.

[tex]4.2=\frac{1}{2}6.48t^{2}[/tex]

[tex]t=\sqrt{\frac{2*4.2}{6.48}}[/tex]

Taking the positive value of t:

[tex]t=1.14\: s[/tex]

Therefore, it takes 1.14 s to move the box 4.20 m.

I hope it helps you!


1. Choose the statement that does not accurately describe observations

Answers

Answer:What are the statements?

Explanation:

Answer:

obtuse, oblique, unaware, over stimulate, distracted, undrewhelmed...

All living things are closely related to their _______________________. Any change in one part of an environment causes a __________________________________________________

Answers

environment, stimulus (or adaptation).

All living things are closely related to their environment. Any change in one part of an environment causes a stimulus.

What is an Environment?

All living or non-living objects that occur naturally, or in this example, without the use of artificial means, are included in the natural surroundings or natural world. The phrase is most frequently used with reference to Earth or certain regions of it.

An environment encompasses all that surrounds us, including both living and dead objects like water, soil, plants, and animals that can adapt to their environment. The gift of nature is what sustains life on Earth.

Environment can be summed up as the effects of every one of the living or non-living things that have an impact on human life. Non-living or abiotic elements include water, land, sunshine, rocks, and air, whereas all live or biotic components are animals, plants, forests, fisheries, and birds.

Thus, all living things are closely related to their environment. Any change in one part of an environment causes a stimulus.

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Semi–conductors are materials that

Answers

Semi-conductors are materials that have conductivity between that of a conductor and a non-conductor (insulator).

Example: Silicon

Look at the equation below. What units are used for W? Give the full name, not the symbol.
Enter your answer
W = m x g

Answers

Answer:

the watt is a unit of power

The symbol W denotes the work done and m is the mass and g is the acceleration due to gravity. If m is in Kg and g has a unit of m/s². Then the unit Kg m/s² is equal to one joule J. That is the unit of work done.

What is work done?

Work done in physics is the dot product of force and displacement. Work done of one joule is equal to the force of one newton, exerted by an object of mass m and acceleration a.

Thus we have F = Ma.

If the acceleration is replaced by acceleration due to gravity g, then force of one Newton is mg, that is the product of mass and acceleration. Force is an external agent act on a body to change its state from rest or motion.

If the force applied causes a displacement of the object, then a work is done on the body. Let the mass is taken in Kg and acceleration due to gravity is in m/s², then one newton  is  Kg m/s² is equal to one joule J. Hence, W has the unit of Kg m/s² or J.

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disordered eating is often __________.

A.

an eating disorder that affects numerous teens

B.

caused by eating irregularly over short periods

C.

a precursor for developing a disorder, but not a disorder on its own

Answers

Answer:

B) caused by eating irregularly over short periods

Explanation:

Disordered eating refers to a range of irregular and unhealthy eating behaviors and attitudes toward food. Disordered eating is often C. a precursor for developing a disorder, but not a disorder on its own

Disordered eating refers to a range of irregular eating behaviors and attitudes towards food that may not meet the full diagnostic criteria for an eating disorder but still involve disturbances in eating patterns, body image, and weight. It can include behaviors such as restrictive eating, binge eating, purging, or excessive exercise.

While disordered eating shares similarities with eating disorders, it is considered a precursor or warning sign that someone may be at risk of developing a diagnosable eating disorder, such as anorexia nervosa, bulimia nervosa, or binge eating disorder. Disordered eating patterns can often progress and become more severe if left untreated, potentially leading to the development of an eating disorder.

Thereofre, disordered eating is often C. a precursor for developing a disorder, but not a disorder on its own.

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what is terrestrial magnetism​

Answers

Answer:

it the phenomenon which deals with earth's magnetic condition

Question 29 of 43
Which is true of infrared waves?
They have shorter wavelengths than X-rays.
They give off more energy than gamma rays.
Ο Ο Ο Ο
o They have longer wavelengths than ultraviolet waves.
They have higher frequencies than visible light waves

Answers

I agree with the first responses

Infrared wave basically have shorter wavelengths than X-rays. The correct option is A.

What is infrared wave?

A section of the electromagnetic radiation spectrum with wavelengths ranging from roughly 700 nanometers (nm) to one millimetre is known as infrared radiation (IR), or simply infrared (mm).

While shorter than radio waves, infrared waves are longer than visible light waves.

Infrared radiation has the ability to ease muscle tension and encourage local blood circulation.

Infrared radiation has been used in conventional medicine to treat conditions including autoimmune diseases and issues with wound healing in addition to relieving muscle pain and tension.

Infrared waves are shorter than radio waves but longer than visible light waves.

Thus, the correct option is A.

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Alli was in the park playing on the equipment. she noticed that on the highest slide she slides down

Answers

Explanation:

veiebrlrkorvziveieviebelebenduvrvr

Alli was in the park playing on the equipment. She noticed that on the highest slide, she slides down with the greatest speed. The correct option is C.

What is the relation between height and speed?

Height is the measurement of someone or something from head to foot or from base to top.

The curved slide is the fastest, despite being longer than the other circuits. This is due to the fact that it is steeper at first, leading the ball to be more affected by gravity and accelerate more quickly before reaching its top speed.

When two items rub against one another, as a slide and a person's bottom, friction is created. A slide would accelerate the rider too quickly without friction, possibly injuring them. Various substances known as lubricants can lessen the impact of friction.

Therefore, the correct option is C) With the greatest speed.

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The question is incomplete. Your most probably complete question is given below:

A) Without friction

B) with the slowest speed

C) With the greatest speed

D) with the same speed as the shortest slide

a golf club is swung and strikes a golf ball with a force of 12.2 N. The golf ball accelerates at 265.2 m/s2. Calculate the mass of the golf ball. Show your work and include the correct unit.

Answers

Answer:

[tex]0.046\ kg[/tex]

Explanation:

[tex]We\ are\ given\ that,\\Acceleration\ produced\ on\ the\ golf\ ball\ due\ to\ Force\ exerted=265.2\ m/s^2\\Magnitude\ of\ the\ Force\ exerted\ over\ the\ Golf-Ball=12.2\ N\\We\ know\ that,\\'The\ force\ acting\ on\ an\ object\ is\ equivalent\ to\ the\ product\ of\ it's\ mass\\ and\ the\ acceleration\ produced'.\\Or,\\F=ma\\Let\ the\ mass\ of\ the\ golf\ ball\ be\ m,\\Hence,\\12.2=265.2\ m\\m=\frac{12.2}{265.2}=0.046\ kg[/tex]

The colors of various main sequence stars are shown below.

Which list correctly ranks these stars in order of increasing temperature?

Answers

Answer:

The answer is B.

Barnard’s star, Sun, Altair, Achernar

Explanation:

Remember the brighter the star the higher the temperature, Red being the oldest of the stars orange middle age, white stars ( getting to its ends can be also a dwarf star), and blue star being the youngest of the stars Also blue is the hottest star

Answer:

B

Explanation:

................produce pollen, which contains the male sex cells, or sperm.

Answers

Answer:

Anther....

My answers

Calculate the amount of charge necessary to exert a force of 35 N in an electric field of 300 N/C.

Question 6 options:
A. 0.117 C
B. 1.17 C
C. 2.12 N/C
D. 0.21 N/C

Answers

Answer:

The amount of charge is "0.117 C" i.e., option A.

Explanation:

The given values are:

Force,

[tex]\vec{F}[/tex] = 35 N

Electric field,

[tex]\vec{E}[/tex] = 300 N/C

Charge,

q = ?

As we know,

⇒  [tex]\vec{F}=q\vec{E}[/tex]

On substituting the given values in the above formula, we get

⇒  [tex]35=q\times 300[/tex]

⇒   [tex]q=\frac{35}{300}[/tex]

⇒   [tex]q=0.117 \ C[/tex]

When the comet passes close to the sun, it has a visible tail. Typically, the comet is only visible for a matter of days while it may be invisible for years. Why does the comet spend so little time close to the sun?

Answers

Answer:

The comet is locked in the Sun's gravity. as it falls deeper in the gravity we'll, its velocity increases. As is travels closer to the Sun, it is trying to break away, but cannot. This transforms into a sideways movement that produces a tight turn. It races further out of the gravity well, and sheds velocity.

What is the current in a circuit that has a resistance of 75Ω and a voltage drop of 120V across the cell? (I'll give brainliest!)

Answers

Resistance  =  (voltage) divided by (current)

                                             =  (120 V)  /  (0.5 Amp)

                                             =          240 ohms .

A bus negotiates a curve of radius 487 m. What force will be exerted on an 80 kg passenger by the outside wall of the bus when it is traveling at 60 km/h?

Answers

Answer:

Centrifugal Force = 45.65N

Explanation:

Given the following data;

Mass, m = 80kg

Radius = 487m

Velocity = 60km/h to m/s = 60*1000/3600 = 16.67m/s

To find the centrifugal force;

Centrifugal Force = mv²/r

Substituting into the equation, we have;

Centrifugal Force = 80*16.67²/487

Centrifugal Force = 80*277.89/487

Centrifugal Force = 2223.12/487

Centrifugal Force = 45.65N

How many electrons would be needed to give a cobalt atom (that has 27 protons and 28 neutrons) a net charge of zero?​

Answers

Answer:

The answer would be 123

Which planet has the least gravitational pull?

Answers

Answer:

Mercury

Explanation:

Which of the following is an example of positive potential energy with reference to the floor? PLS HELP

Answers

Answer:

A

Explanation:

potential energy is usually at rest at the highest point in comparason to the ground

How much mass can be lifted by a weight lifter on the surface of the moon if he can lift 100 kg on the Earth?​

Answers

Answer:

if u have to find mass then it always constant everywhere that is 100kg but if u have to find weight then it 1/6 of earth .

Explanation:

16.6666

I REALLY NEED HELP THIS IS DUE IN AN HOUR

A person records a bird call as an analog wave. The sound is then stored on a computer as a digital signal. When a person wants to listen to the bird call, it needs to be converted back into an analog wave. What is an advantage of storing the bird call as a digital?

Answers

Answer:

In analog technology, a wave is recorded or used in its original form. In digital technology, the analog wave is sampled at some interval, and then turned into numbers that are stored in the digital device. On a CD, the sampling rate is 44,000 samples per second. An analog recording is considered unlimited. Therefore, it can move to a higher and higher resolution without losing its original quality.

An 12 kg object accelerating from 9 m/s to 14 m/s. What is the change in momentum of the object?

Answers

Answer:

Change in momentum = 60kgm/s.

Explanation:

Given the following data;

Mass, m = 12kg

Initial velocity, u = 9m/s

Final velocity, v = 14m/s

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

[tex] Momentum = mass * velocity [/tex]

To find the change in momentum;

Mathematically, change in momentum is given by the formula

[tex] Change \; in \; momentum = m(v - u) [/tex]

Substituting into the equation, we have;

[tex] Change \; in \; momentum = 12(14 - 9) [/tex]

[tex] Change \; in \; momentum = 12*5[/tex]

Change in momentum = 60kgm/s.

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