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
Korolek [52]
3 years ago
9

Which of these events is an example of the Doppler shift?

Physics
2 answers:
garik1379 [7]3 years ago
5 0
The intensity of an electromagnetic wave increases with the field strength.
Rina8888 [55]3 years ago
4 0
<h3><u>Answer;</u></h3>

The intensity of an electromagnetic wave increases with the field strength.

<h3><u>Explanation;</u></h3>
  • <em><u>Doppler shift also Doppler effect occurs when the source of a wave form sends out waves at a regular rate or frequency, but there is a constant relative motion between the source and the observe, thus causing a change in frequency.</u></em>
  • Electromagnetic waves are waves that do not require a material medium for transmission. Energy in electromagnetic waves is transferred through vibrations of electric and magnetic fields.
  • The strength of electric and magnetic field increases the intensity of an electromagnetic wave, which is an example of Doppler shift.
You might be interested in
Why did the following change occur? the snow that covered the ground all winter began to melt, temperatures rose, and flowers st
FromTheMoon [43]

Answer:C

Explanation:

8 0
2 years ago
Read 2 more answers
A pail in a water well is hoisted by means of a frictionless winch, which consists of a spool and a hand crank. When Jill turns
Sveta_85 [38]

Answer:

182.28 W

Explanation:

Here ,

m = 7.30 Kg

distance , d= 28.0 m

time , t = 11.0 s

average power supplied = change in potential energy/time

average power supplied = m×g×d/time

average power supplied = 7.30×9.81×28/11

average power supplied = 182.28 W

the average power supplied is  182.28 W

6 0
2 years ago
Use the motion map to answer the question.
Lana71 [14]

Answer:

The object starts away from the origin and then moves toward the origin at a constant velocity. Next, it stops for one second. Finally, it moves away from the origin at a greater constant velocity.

3 0
3 years ago
The ratio of output power to input power, in percent, is called
kow [346]

That ratio is called"efficiency".  It doesn't need to be a percent. 
It can just as well be a fraction or a decimal number.

3 0
2 years ago
When the current in a toroidal solenoid is changing at a rate of 0.0240 A/s , the magnitude of the induced emf is 12.4 mV . When
Gemiola [76]

Answer:

The number of turns in the solenoid is 230.

Explanation:

Given that,

Rate of change of current, \dfrac{dI}{dt}=0.0240\ A/s

Induced emf, \epsilon=12.4\ mV=12.4\times 10^{-3}\ V

Current, I = 1.5 A

Magnetic flux, \phi=0.00338\ Wb

The induced emf through the solenoid is given by :

\epsilon=L\dfrac{dI}{dt}

or

L=\dfrac{\epsilon}{(di/dt)}........(1)

The self inductance of the solenoid is given by :

L=\dfrac{N\phi}{I}.........(2)

From equation (1) and (2) we get :

\dfrac{\epsilon}{(di/dt)}=\dfrac{N\phi}{I}

N is the number of turns in the solenoid

N=\dfrac{\epsilon I}{\phi (dI/dt)}

N=\dfrac{12.4\times 10^{-3}\times 1.5}{0.00338 \times 0.024}

N = 229.28 turns

or

N = 230 turns

So, the number of turns in the solenoid is 230. Hence, this is the required solution.

3 0
2 years ago
Other questions:
  • The glowing of a neon light is caused by electrons emitting energy as they (1 point)
    10·2 answers
  • What is a constellation as astronomers define it today? What does it mean when an astronomer says, “I saw a comet in Orion last
    11·1 answer
  • In a certain region of space, a uniform electric field is in the x direction. A particle with negative charge is carried from x
    11·1 answer
  • Sound in water travels at a velocity governed by the relation v = √(B/rho) where B is the bulk modulus and rho is the density. F
    5·1 answer
  • Does air defy gravity?
    15·1 answer
  • When an 8 V battery is connected to a resistor, a 2 A current flows in the resistor. What is the resistor's value?
    15·1 answer
  • A car of mass 1270 kg makes a 15.0 m radius turn at 11.8 m/s on flat ground. How much centripetal force acts on it?
    13·1 answer
  • What is The substance that dissolves the solute.
    11·1 answer
  • NEED HELP!! PHYSICS PROBLEM
    7·1 answer
  • if a horse exerts a pulling force on a cart, is the reaction force the force of friction between the horse's feet and the road?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!