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
Alecsey [184]
3 years ago
10

Which statement does NOT explain the concept of the Doppler Effect? A) As an observer approaches a stationary sound, the sound w

aves are compressed, making the pitch higher. B) As an observer moves away from a stationary sound, the sound waves are stretched making the pitch lower. C) As a sound source approaches a stationary object, the sound waves are compressed, making the pitch higher. D) As a sound source moves away from a stationary object, the sound waves are compressed, increasing the pitch.
Physics
1 answer:
mixer [17]3 years ago
7 0
The answer is <span>D) As a sound source moves away from a stationary object, the sound waves are compressed, increasing the pitch.  This statement does not explain the concept of Doppler Effect.  </span><span>Due to the Doppler effect, the pitch decreases as the sound moves away from you.</span>
You might be interested in
Create a list of three questions that are good science questions.
masya89 [10]

Answer:

what is speed

how to tell what speed an objeckt is moveing

vlocity

Explanation:

5 0
4 years ago
A sphere of uniform density with mass 21 kg and radius 0.8 m is spinning, making one complete revolution every 0.8 s. the center
kompoz [17]
Using the equation;
TE = 1/2mv^2(1+2); where k = 2/5 for a solid sphere; V is the velocity, and m is the mass.
Total energy = 0.5 × 21 × 8² (7/5)
                    = 940.8 J
The rotational kinetic energy of the sphere is 940.8 J

8 0
4 years ago
The area of a piston of a force pump is 8 X 10⁴m². What force must be
prisoha [69]

Answer:

Force of 37.44 * 10^{8} Kgm/s^2 must be  applied to the piston to raise oil to a height of 6.0 m

Explanation:

As we know,

Pressure is the force per unit area

Or P = \frac{F}{A}

Force = P * A

Pressure is the product of density, gravitational constant and height

P = 780 * 10 * 6

Force

= P * A\\= 780 * 10*6*8*10^4\\= 37.44 * 10^{8}Kgm/s^2

5 0
3 years ago
a 63 kg object needs to be lifted 7 meters in a matter of 5 seconds. approximately how much horsepower is required to achieve th
Natali [406]
Power is defined as the rate of doing work or the work per unit of time. The first step to solve this problem is by calculating the work which can be determined by the equation:

W = Fd

where:

F = force exerted = ma
d = distance traveled
m = mass of object
a = acceleration

Acceleration is equivalent to the gravitational constant (9.81 m/s^2) if the force exerted has a vertical direction such as lifting.

W = Fd = mad = 63(9.81)(7) = 4326.21 Joules

Now that we have work, we can calculate power.

P = W/t = 4325.21 J / 5 seconds = 865.242 J/s or watts

Convert watts to horsepower (1 hp = 745.7 watts)

P = 865.242 watts (1hp/745.7 watts) = 1.16 hp

3 0
3 years ago
Read 2 more answers
Could you please help me on number four
sleet_krkn [62]
What is it asking? It is sort of blurry
3 0
3 years ago
Other questions:
  • please solve this for me ,A garden roller is pulled with a force of 200N acting at an angle of 50 degree with the ground level.f
    11·1 answer
  • Mechanical advantage is a measure of how much a machine multiplies the input
    13·1 answer
  • What is the electric field (given as a vector) at coordinates (x,y,z) = (1m,2m,2m) produced by a point charge of 4 μC sitting at
    5·1 answer
  • What is the S.I unit of weight​
    5·2 answers
  • Compare and contrast the dark zone of the ocean with the forest floor of a tropical rain forest.What living or nonliving factors
    13·1 answer
  • The world energy consumption was about 6*10^22 J. How much area must a parallel plate capacitor need to store this energy Assume
    11·1 answer
  • Can someone answer these
    9·1 answer
  • What are the types of energy sources based on<br>time of replacement ? write down their names <br>​
    13·2 answers
  • Non renewable resources example ​
    11·1 answer
  • Suppose that when spring was wound, 100J of work was done but 15J escaped to the surrounding as heat. The change in internal ene
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!