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lana [24]
3 years ago
8

The Doppler effect is a change in the ________________ frequency of sound caused by the motion of either their listener or the s

ound source.
Physics
2 answers:
lyudmila [28]3 years ago
6 0
The answer is
 B) Apparent
nikklg [1K]3 years ago
5 0

Answer: The correct answer is an apparent.

Explanation:

Doppler effect is a phenomenon in which there is a increase or decrease in the frequency when there is relative motion between an observer and the source.

When the observer and the listener are moving towards each other then there will be increase in frequency. When the observer and the listener are moving away from each other then there will be decrease in the frequency.

Therefore, The Doppler effect is a change in the apparent frequency of sound caused by the motion of either their listener or the sound source.

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Dierdre drew a diagram to compare the three types of mirrors.
Sholpan [36]

<em>Labels that belong in the marked ares X, Y & Z include;</em>

X: Curves outward

Y: Image may be smaller than object

Z: Image is always virtual

<u>Since the rays never meet, the images formed by convex mirrors are always virtual and smaller than the object, and since they are smaller, the images appear to be further than they actually are.</u>

8 0
3 years ago
A ball is spun around in circular motion such that it completes 50 rotations in 25 s.
Leokris [45]

Answer:

(A) The period of its rotation is 0.5 s (2) The frequency of its rotation is 2 Hz.

Explanation:

Given that,

a ball is spun around in circular motion such that it completes 50 rotations in 25 s.

(1). Let T be the period of its rotation. It can be calculated as follows :

T=\dfrac{25}{50}\\\\T=0.5\ s

(2). Let f be the frequency of its rotation. It can be defined as the number of rotations per unit time. So,

f=\dfrac{50}{25}\\\\f=2\ Hz

Hence, this is the required solution.

3 0
3 years ago
Plane a travels at 900km/h and plane b travels at 250/5.which plane travels faster
vesna_86 [32]

Explanation:

We have,

Speed of plane a is 900 km/h

Plane b is moving at a rate of \dfrac{250\ km}{5\ h}=50\ km/h

It is required to find which plane is faster. To find which plane is faster, we need to compare their speeds.

Speed of a plane a is 900 km/h and that of plane b is 50 km/h. So, we can say that plane a is moving faster.

5 0
3 years ago
Can an argon atom undergo vibrational motion?
azamat
No. the answer to the question if can an argon atom undergo vibrational motion is no. it can not even spin either. the argon atom, or the argon is a chemical element that is the third most abundant gas in the earth's atmosphere. it is ore than twice as abundance as water vapor. Thank you for this question.
5 0
3 years ago
What is a force that opposes tje movement of energy?
Oksanka [162]
Air resistance is the answer
4 0
3 years ago
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