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
ololo11 [35]
4 years ago
8

A piece of copper wire is formed into a single circular loop of radius 18 cm. A magnetic field is oriented parallel to the norma

l to the loop, and it increases from 0 to 0.54 T in a time of 0.57 s. The wire has a resistance per unit length of 4.9 x 10-2 /m. What is the average electrical energy dissipated in the resistance of the wire
Physics
1 answer:
MA_775_DIABLO [31]4 years ago
3 0

Answer:

0.0956431731568 J

Explanation:

N = Number of turns = 1

r = Radius = 18 cm

A = Area = \pi r^2

\dfrac{dB}{dt}=\dfrac{0.54}{0.57}

Induced voltage is given by

V=NA\dfrac{dB}{dt}\\\Rightarrow V=1\times\pi 0.18^2\times \dfrac{0.54}{0.57}\\\Rightarrow V=0.096430359767\ V

Resistance is

R=2\pi rR/m\\\Rightarrow R=2\pi 0.18\times 4.9\times 10^{-2}\\\Rightarrow R=0.0554176944093\ \Omega

Power is given by

P=\dfrac{V^2}{R}\\\Rightarrow P=\dfrac{0.096430359767^2}{0.0554176944093}\\\Rightarrow P=0.167795040626\ W

Energy

E=Pt\\\Rightarrow E=0.167795040626\times 0.57\\\Rightarrow E=0.0956431731568\ J

The average electrical energy dissipated is 0.0956431731568 J

You might be interested in
A _______ satellite records reflected wavelengths from Earth's surface
masha68 [24]
<span>A Landsat satellite records reflected wavelengths from Earth's surface<span /></span>
3 0
4 years ago
Read 2 more answers
PLEASE!!!!!!HELP!!!!!!!
REY [17]
DNA Polymerase proofreads and corrects bases added during replication.
6 0
3 years ago
The mechanism that establishes the medullary osmotic gradient depends most on the permeability properties of the ________.
jeyben [28]

Answer:

<em>Loop of Henle.</em>

Explanation:

<u>Loop of Henle</u><em> is a mechanism that establishes the medullary osmotic gradient, that depends on its important application in day to day life. </em>

Moreover the loop of Henle is very very essential for concentrating the urine, they do not work at all alone. Loop of Henle looks like U shaped and it is long and it is present in birds, reptiles, and as well as mammals.

3 0
4 years ago
A 10cm spring is hung from a clamp stand. With 1N of force it measures 12.2cm long and with 3N of force it measures 16.4cm long.
solmaris [256]

Answer:

0.48 N/cm

Explanation:

The original length is 10cm so with a force of 10cm, the extension will be 12.2-10=2.2 cm when force of 1N is exerted. Similarly, with a force of 3N, the extension is 16.4-10=6.4cm

The slope will be given by change in force/ change in extension and this is equivalent to the stiffness.

Change in force is 3-1=2 N

Change in exgension is 6.4-2.2=4.2 cm

The slope will be 2/4.2=0.4761904761904 N/cm

Rounded off, the slope is 0.48 N/cm and this is the stiffness of the spring.

7 0
4 years ago
A ball is dropped from the top of a building that is known to be 400 feet high. The formula for finding the height of the ball a
Ira Lisetskai [31]

Answer:

3 seconds

Explanation:

Height of the building = 400 feet

Height of the ball from the ground is given by

h=400−16t²

This formula has been derived from

s=ut+\frac{1}{2}at^2

a = Acceleration due to gravity = 32 ft/s²

u = Initial velocity = 0

t = Time taken

Substituting all the values we get

s=0t+\frac{1}{2}32t^2\\\Rightarrow s=16t^2

This is the height of the ball from the top of the building

The height of the ball from the ground will be

h = 400-s

⇒h = 400−16t²

When h = 256 ft

256=400-16t^2\\\Rightarrow t=\sqrt{\frac{256-400}{-16}}\\\Rightarrow t=3\ s

Time taken by the ball to reach a height of 256 feet above the ground is 3 seconds

4 0
4 years ago
Other questions:
  • The compressed-air tank ab has a 250-mm outside diameter and an 8-mm wall thickness. it is fitted with a collar by which a 40-kn
    11·1 answer
  • Which temperature is warmer than the freezing point of water
    6·1 answer
  • A static charge that is produced by a nearby objet is an?
    5·1 answer
  • 1. Choose two forces and compare and contrast these forces. You must provide two ways that they are alike and two ways that they
    5·2 answers
  • A parallel-plate capacitor is connected to a battery. The space between the two plates is empty. If the separation between the c
    14·1 answer
  • What are some common measurements that are given as a rate?
    7·1 answer
  • The wall is 500 sq. feet. A gallon of paint covers 160 sq. feet. What is an appropriate conversion factor to help determine how
    11·1 answer
  • Q1. What is the frequency of rotation of 1000 loop coil of area 20cm2 in a magnetic field of 5T to
    10·1 answer
  • Which symbol and unit of measurement are used for electric current?
    10·1 answer
  • Name two units for measuring the diameter of nucleus atom.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!