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The Doppler effect is a change in the
of sound
waves that occurs wipen the source of the sound waves is
moving relative to a stationary listener.
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Answers
Answer:
The Doppler effect is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener. Sound waves that are closer together have a higher frequency, and sound waves that are farther apart have a lower frequency.
Explanation:
hope it helps you
Related Questions
A car that weighs 40,000 N is driving down a hill at a constant velocity. If the car’s momentum is 80,000 kg∙m/s, how fast is the car moving?
Answers
The velocity of the car is equal to 20 m/s.
Given the following data:
Weight of car = 40,000 Newton.Car’s momentum = 80,000 kg∙m/s.Scientific data:
Acceleration due to gravity = 10 [tex]m/s^2[/tex].To determine the velocity of the car:
How to determine the car's velocity.First of all, we would calculate the mass of the car by using this formula:
[tex]Weight = mg\\\\40000=m \times 10\\\\m=\frac{40000}{10}[/tex]
Mass, m = 4,000 kg.
For the velocity:
Mathematically, momentum is giving by this formula;
[tex]Momentum = mass \times velocity[/tex]
Making velocity the subject of formula, we have:
[tex]Velocity = \frac{Momentum}{Mass}[/tex]
Substituting the given parameters into the formula, we have;
[tex]Velocity = \frac{80000}{4000}[/tex]
Velocity = 20 m/s.
Read more on momentum here: brainly.com/question/15517471
What type of main sequence star is most likely to become a black hole?.
Answers
Box is kicked (given an initial speed), causing it to slide along a level floor. There is friction acting between the box and floor surfaces. What is true about this motion
Answers
Answer:
I would assume that the box slows down due to the frictional force between the floor and the box. In addition, the frictional force points opposite of the boxes motion. As we know, the box was given an initial speed, therefore, having an applied force. Hence, we can conclude that the frictional force opposing the motion of the crate is equal to the applied force but acting in the opposite direction. This frictional force is called static friction. When we increase the applied force (push harder), the frictional force will also increase until it reaches a maximum value.
Hope that helps!
Salem walked 60 m in 5 seconds, his average speed is.
Answers
Answer:
12m/s
Explanation:
60/5=12
Answer:
Explanation:
Solution,
Distance(d)=60m
Time(t)=5sec
Now,
A.speed=d/t
A.speed=60/5=12m/s
what is the relationship between wavelength and frequency ?
Answers
Answer: inverse relationship
Explanation: one increases and the other decreases
Think of an example from real life that can be explained with Newton's Third Law.
Answers
Answer:
when you jump, your legs apply force on the ground that applies an equal and opposite reaction that make you jump
Do loud sounds travel faster than soft sounds?
Answers
Answer: No. Both travel at the same speed.
Explanation:
Answer: no, they all travel at the same speed
Explanation: the amplitude of a sound does not matter for all sound travels at the same speed
How far is one light-year in kilometres? Answer to 2sf.
Answers
Answer:
9.461 trillion kilometers
If the truck has a mass of 2,500 kilograms , what is its momentum ? (V=45m/s) Express your amswer
Answers
Answer:
The answer is 2,500 * 45 = 112500kgm/s
a sound wave coming from a ringing telephone have a frequency of 226 Hz and it’s wavelength is 2 m. what is the speed of the sound wave.
Answers
Answer:
I think this is simple division of the sound wave and the hertz at the same time.
Explanation:
I think you should maybe divide by 2
A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filling clinging to the?
(a) North pole is almost equal to the south pole.
(b) North pole is much more than the south pole.
(c) North pole is much less than the south pole.
(d) Magnet will be same all along its length.
Answers
Answer:
(a) North pole is almost equal to the south pole.
Explanation:
Humans selectively breed cows that produce more meat or milk. This selection is not necessarily helpful
to increase their survival rate. They are just selecting a desirable characteristic. How can growing one
variety affect cows population over many generations?
There will be less genetic diversity in the population.
The cows will produce less milk or less meat over generations.
The cows will be able to survive for a longer time.
There will be more genetic diversity in the population.
Answers
Answer:
The cows will produce less milk or less meat over generations.
how does lightening occur
Can you please tell me me by looking this book picture
Please fast
Answers
Answer:
lightening happens because light is reflectting the inner space of the imagination of dragons
Answer:
When the negative charge in the bottom of cloud are attracted to the positive charge in the ground.Like this lightening occurs.
What is the difference between kinematics and dynamics?.
Answers
What type of mass movement moves the most material, averaged over the earth’s land and over long times?.
Answers
Answer:
the many, small events move the most material.
Explanation:
Davina accelerates a box across a smooth frictionless horizontal surface over a displacement of 18. 0 m with a constant 25. 0 n force angled at 23. 0° below the horizontal. How much work does she do on the box?.
Answers
work and force
w = f cos 23 . d
w = 25 cos 23° . 18
w = 414.23 J
2. Two spherical objects have masses of 1.5 x 109 kg and 8.5 x 10 kg. Their centers are
separated by a distance of 2500 m. Find the gravitational attraction between them.
Answers
music=life=love=GOD
GOD is MUSIC
Explanation:I hope this helps. Not with your mathematical issue. Maybe watch Good Will Hunting?
LOL
God Bless brother. I hope you get it. It takes hard work.
b.
Determine the electric potential energy for the array of three charges in the drawing, relative to its value when the charges are infinitely far away and infinitely far apart.
Answers
Although we do not have the diagram needed to answer this question, we can provide general information in that electrical potential energy is calculated based on the charges and the distance between them.
How do we calculate electric potential energy?This energy can be calculated using the value of the charges along with the distance between them with the formula Energy = [tex]k\frac{q1q2}{r}[/tex] in which q represents the charges whilst r represents the distance of separation. As we can see these values are inversely proportional to one another.
Therefore, we can confirm that we can calculate electric potential energy using the charges and the distance between them, which will be inversely proportional to one another.
To learn more about electrical energy visit:
https://brainly.com/question/863273?referrer=searchResults
A billiard ball collides with another billiard ball, transferring all of its kinetic energy. What will happen after the collision
Answers
Answer: If the cue ball strikes a stationary billiard ball straight on, then the cue ball will stop moving after the collision. It will have transferred all of its kinetic energy to the other ball, which will move forward with the same velocity that the cue ball had before the collision.
Explanation:
A gravitational force of 2.54 x 10^-10 is exerted by two objects that are 0.25 m apart. If the first object has a mass of 0.35 kg, what is the mass of the second object?
Answers
Answer :
what is the answer options?
Explanation:
brainlist nd 20 points
Answers
Answer:
I'm not sure but I think it's 35-39
A learner has a mixture of sand and water. The best method to separate this solution would be ?
Answers
Answer:
An filtration is the answer.
What phase in running is determined when the foot and leg serve as shock absorber, before the foot hits the ground, and the knee flexes ?
Answers
Answer:
it is the stance phase of running where the foot and leg serve as shock absorber
Which wire has the most total charge carriers flowing past a point in the wire during the specified time interval
Answers
The wire 2 has the most charge flowing in it at the given time interval.
Charge flowing in each wireThe total charge flowing in each wire is calculated using the following equation;
Q = It
where;
I is the currentt is the time of current flowCharge in wire 1The charge flowing in wire 1 is calculated as follows;
Q = 1 x 60 = 60 C
Charge in wire 2The charge flowing in wire 2 is calculated as follows;
Q = 2 x 45 = 90 C
Charge in wire 3The charge flowing in wire 3 is calculated as follows;
Q = 3 x 10 = 30 C
Thus, the wire 2 has the most charge flowing in it at the given time interval.
The complete question is below
The current across three identical current carrying wires is measured during a certain time interval. The reading is reported in the table
Current (A) Time Interval (S)
Wire 1 1 60
Wire 2 2 45
Wire 3 3 10
Learn more about quantity of charge in a wire here: https://brainly.com/question/25922783
What is your Momentum traveling 4 m/s with a mass of 70 kg?
Answers
Answer:
280
Explanation:
I used the equation for momentum, p=mv
70 x 4 = 280
name an object that contains all 7 energies, and where those energies are shown.
Answers
Answer:
I don't know what energy is there I think you need to check in you book or note dear
Explanation:
hope you will understand
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If thermal energy is added to a liquid, what is the most likely thing that will happen to the substance?
Answers
Explanation:
When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).
What exerts pressure in all directions?
Answers
Answer: Gases
Explanation: Gases don't have a certain direction, so they go in all directions.
if you are riding on a train that speed past another train moving in a same direction on an adjacent track ti appears that the other train is moving backward why?
Answers
Answer:
If you are traveling with a relativity constant velocity, then you will interpret your reference frame as being at rest. Since you are moving faster than the other train, the other train is moving backwards relative to you. Seeing the other train go past your window from front to rear makes it look like the train is going backwards
Explanation:
On average, how many lunar eclipses are there every year?.
Answers
Answer:
Three lunar eclipses every year.
Explanation:
A lunar eclipse only occurs during a full Moon, when the Sun, Earth and Moon are all aligned. But despite the Moon only taking 29.5 days to orbit Earth and complete a cycle from full Moon to full Moon, there are only on average about three lunar eclipses every year.