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
Sergeu [11.5K]
3 years ago
10

An AM radio station broadcasts isotropically (equally in all directions) with an average power of 3.80 kW. A receiving antenna 7

5.0 cm long is at a location 4.00 mi from the transmitter. Compute the amplitude of the emf that is induced by this signal between the ends of the receiving antenna.
Physics
1 answer:
Alecsey [184]3 years ago
7 0

Answer:0.1759 v

Explanation:

Intensity of wave at receiver end is

I=\frac{P_{avg}}{A}

I=\frac{3.80\times 10^3}{4\times \pi \times \left ( 4\times 1609.34\right )^2}

I=7.296\times 10^{-6} W/m^2

Amplitude of electric field at receiver end

E_{max}=\sqrt{2I\mu _0c}

Amplitude of induced emf

=E_{max}d

=\sqrt{2\times 7.29\times 10-6\times 4\pi \times 3\times 10^8}\times 0.75

=17.591\times 10^{-2}=0.1759 v

You might be interested in
Two small space probes have been slowed to 10m/s as they approach the moon from the same direction. Probe 1 has a mass of 86kg a
bulgar [2K]

Answer:

B

Explanation:

B

4 0
2 years ago
A hair dryer uses 1200 watts of power. Current flow through
KonstantinChe [14]
The answer is: 120V

Power is the rate at which energy is supplied/transformed in time:
we can write:

V ddp in Volts represents Energy/Charge i.e. energy carried by each coulomb;

I current in Amperes represents Charge/time or coulombs passing each seconds.

combining them we have:

Power = energy/time = V • 1

or

1200 = V ⋅ 10
V = 1200/10 = 120V
6 0
3 years ago
Read 2 more answers
Since monsoons are storms that usually occur during a specific time of year in certain regions, you could not compare them to th
sweet [91]
In the given statement: "<span>Since monsoons are storms that usually occur during a specific time of year in certain regions, you could not compare them to thunderstorms. </span>" is false. Therefore, among the given choices, the correct answer is B. False.
4 0
3 years ago
Read 2 more answers
Please Help with this
Tresset [83]

Answer: c is correct

Explanation: i did this

3 0
2 years ago
Calculate the force of a particle with a net charge of 170 coulombs traveling at a speed of 135 meters/second perpendicular to t
amm1812

Answer:

F=1.14N j

Explanation:

The magnitude of the magnetic force over a charge in a constant magnetic field is given by the formula:

|\vec{F}|=|q\vec{v} \ X\ \vec{B}|=qvsin\theta  (|)

In this case v and B vectors are perpendicular between them. Furthermore the direction of the magnetic force is:

-i X k = +j

Finally, by replacing in (1) we obtain:

\vec{F}=(170C)(135\frac{m}{s})(5.0*10^{-5}T)=1.14N\ \hat{j}

hope this helps!

6 0
2 years ago
Read 2 more answers
Other questions:
  • When a particle vibrates and passes to the next vibration what happens?
    7·1 answer
  • Look at the divisions between 2 and 4. What level of precision does this stopwatch have based on the divisions marked on its fac
    8·1 answer
  • Pls answer ....................................
    5·1 answer
  • An acceleration of 2m/s^2 is produced on a body by applying an effort of 50N. calculate mass of the body​
    10·2 answers
  • Question 2 help me and i'll give u brainlest
    6·1 answer
  • An object travels a distance d with acceleration a over a period of time t according to the equation: d = at² After 2.3 seconds
    8·1 answer
  • Direction of wind: from to​
    6·1 answer
  • What are the answers is a quiz
    10·1 answer
  • If a 75 W lightbulb is 15% efficient, how many joules of light energy does the bulb produce every minute?
    11·1 answer
  • Potential energy is the energy an object has due to its:
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!