Two alarm sirens are emitting a loud note: at points between the two sirens the sound is very loud, but at other points it is much fainter. what wave phenomena described
The wave phenomena described in this scenario is known as interference.
Interference occurs when two or more waves interact with each other, resulting in the reinforcement or cancellation of the waves at certain points in space.
In this case, the two alarm sirens are emitting sound waves that are overlapping and interfering with each other. When the waves from the sirens are in phase, meaning their peaks and troughs align, constructive interference occurs. Constructive interference leads to the amplification of the sound waves, resulting in a louder sound at points between the two sirens.
On the other hand, when the waves from the sirens are out of phase, meaning their peaks and troughs are misaligned, destructive interference occurs. Destructive interference leads to the cancellation of the sound waves, resulting in a fainter sound at points where the waves interfere destructively.
The loud and faint regions of sound between the two sirens are a result of the constructive and destructive interference of the sound waves emitted by the sirens, respectively.
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Explain,'The Theory of Relativity' briefly.
Answer:
The theory of Relativity state that :Special relativity applies to all physical phenomena in the absence of gravity and General relativity explains the law of gravitation and its relation to other forces of nature.
[ You're welcome,my past self!]
How to calculate net force of circular motion
Answer:
follow this steps so you can find the answer of your question
Explanation:
To calculate the centripetal force for an object travelling in a circular motion, you should:
Find the square of its linear velocity, v² .
Multiply this value by its mass, m .
Divide everything by the circle's radius, r .
all 3 of these examples (Volt, Newton, Tesla) are units that come from other metric units true or false?
Answer:
False
Explanation:
because Only Volt and Newton are units come from metric units, however, the Tesla is not come from Metric units.
Use the drop-down menus to indicate the stage of technological design in which each action would occur.
Establish criteria and prepare the initial design. = Design a solution.
Redesign and retest as necessary. = Evaluate a solution.
Define a need and research related information. = identify a problem.
Build and test a prototype. = implement a solution
Engineering design has to do with the overall process of the design and the production of new products.
What are the stages in engineering design?
Engineering design has to do with the overall process of the design and the production of new products. Now the process of engineering design involves many components and all these are taken into account when a new product is being designed.
As such, the stage of technological design in which each action would occur is;
Define a need and research related information- identify a problem
Establish criteria and prepare the initial design - Design a solution
Build and test a prototype - implement a solution
Redesign and retest as necessary - Evaluate a solution
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answer: 1 design a solution 2 evaluate a solution 3 identify a problem 4 implement a solution
Explanation: i know
when a car suddenly stops,the objects in the backseat are thrown forward.this is explained by-
A.Newton's first law of motion
B.Newton's second law of motion
C.Newton's third law of motion
D.the universal law of gravitation
Answer:law of interia(1st law)
Explanation:
20 swings takes 5 seconds in the pendulum. calculate the periodic time of the swing
Answer:
0.25s
Explanation:
5/20 = 0.25s
This might be correct
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Explanation:
Refer the explanation in the picture
Why is light wave not considered a mechanical wav?
A.A light wave is visible to humans.
B.A light wave moves faster than most waves.
C.A light wave does not have a wavelength.
D.A light wave travels through the vacuum of space.
how fast is the cheetah running in m/s
With 4.3 m/s velocity, is the cheetah running.
velocity= distance/time
distance=27.6 m
time=6.3 s
velocity=27.6 m/6.3 s
velocity=4.3 m/s
A vector number known as velocity describes "the pace at which an item changes its location." Imagine a person moving quickly, taking one stride ahead, one step back, and then beginning from the same place each time. A vector quantity is velocity. As a result, velocity is aware of direction. One must consider direction while calculating an object's velocity. Saying that an item has a velocity of 55 miles per hour is insufficient. The direction must be included in order to adequately characterize the object's velocity. Simply said, the velocity vector's direction corresponds to the motion of an item.
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What is the cat's displacement t=0.5s to 1.5s,
Answer:
3.75m
Explanation:
area under graph
5+2.5=7.5
7.5/2=3.75
3.75x0.5=1.875
1.875x2=3.75m
What is important when it comes to winning
Answer:
satisfaction, enjoyment and fair play
Answer:
It is important to be a good sport, and even if you do not win still be happy about being able to participate, and congratulate the person that did win.
Explanation:
Hope this helped Bye!
Calculating the Magnitude of the Resultant Vector
R
13 m
5m
What is the magnitude of the resultant vector? Round
your answer to the nearest tenth.
m
The magnitude of the resultant vector is 13.9m.
The size of the resulting vector can be determined using the Pythagorean theorem. As you can see from these two examples, the result of adding three or more rectangular vectors is easy to determine using the Pythagorean theorem. The vectors should be added in a different order. Equation 2 Subtracts the vectors in opposite directions from each other to get the resulting vector.
Where vector B is in the opposite direction to vector A and R is the resulting vector. The resulting vector is defined as a single vector that produces the same effect as many vectors produced together. The size of a vector is the length of the vector. The absolute value of vector a is represented by |a|. For more information on vector sizes, see Vectors overview. The formulas for the sizes of 2D and 3D vectors in terms of coordinates are derived on this page.
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Two students sit in a sled and slide down a hill which gives them an initial horizontal velocity of 9.2 m/s. Their combined mass is 120 kg and the coefficient of friction between the sled and the snow is 0.23. How far will they slide horizontally before coming to a stop?
The sled will slide horizontally a distance of 18.94 m before coming to a stop.
The horizontal motion of the sled is under the influence of frictional forces acting opposite to the direction of motion. When the sled comes to rest, the frictional force would have done work to bring the sled to a halt.
To find the distance the sled would move, use the work-energy theorem which states that the work done by all the forces acting on a body is equal to the change in the kinetic energy of the body.
Kinetic energy = 1/2mv²where m is the mass and v is the velocity of the body
Initial velocity of the sled = 9.2 m/s
Mass of the sled and students = 120 kg
Coefficient of friction = 0.23There is no vertical motion so the potential energy remains constant and is ignored.The sled starts with kinetic energy equal to the work done by all the forces acting on it. The frictional force does negative work and removes the kinetic energy and bring the sled to a stop.Work done by friction = force × distance.
The force of friction is proportional to the normal force acting on the sled. We do not know the normal force acting on the sled, but we know the gravitational force acting on the sled and this gives the normal force.Force of gravity = mass × acceleration due to gravity = mg.
The normal force = force of gravity × cos (0) = mg × cos (0) = mg.
The angle between the horizontal and the slope is zero, so the angle of inclination is zero.
Work done by friction = force of friction × distance
Work done by friction = frictional force × distance
Work done by friction = μmg × distance
Work done by friction = kinetic energy at start of slide = 1/2mv²
Work done by friction = (1/2)(mass)(initial velocity)²
Work done by friction = (1/2)(120 kg)(9.2 m/s)²
Work done by friction = 5 137.6 J
Frictional force = μmg
Frictional force = (0.23)(120 kg)(9.8 m/s²)
Frictional force = 270.96 N270.96 N × distance = 5 137.6 J
distance = 5 137.6 J/270.96 N
distance = 18.94 m
Therefore, the sled will slide horizontally a distance of 18.94 m before coming to a stop.
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Two swimmers competed in a race. The graph shows how the position of both swimmers
changed over time during the race.
Two swimmers competed in a race. The graph shows how the position of both swimmers
At what rate of speed did Swimmer 1 travel throughout the race?
Answer:
2m/s
Explanation:
Calculate the slope at any point as the line is linear. i.e. 20/10 = 2/1 m/s
Starting from rest, a marble first rolls down a steeper hill, then down a less steep hill of the same height. For which is it going faster at the bottom?.
The first and second marble have the same speed at the bottom.
We need to know about the conservation of energy to solve this problem. The energy can not be created or destroyed, the only way is to change to another form. It can be written as
Ei = Ef
where Ei is initial energy and Ef is the final energy
The potential energy of the first marble is the same as the second marble because they have the same height. According to conservation of energy, the potential energy will be converted to kinetic energy and the speed of the marbles will same at the bottom.
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If two waves in the same space interfere completely constructively, which of
the following occurs?
A. The amplitude decreases.
OB. The amplitude increases.
OC. The wave speed decreases.
OD. The wahe speed increases
If two waves in the same space interfere completely constructively, the amplitude increases.
What is amplitude of a wave?
It is the maximum displacement moved by the wave from its point of equilibrium.
The constructive interference in the two waves occurs when both the waves come together and this results in them being in phase with each other. This means that the oscillation at the given point are in the same direction and due to this the resulting amplitude is larger than the amplitude of the particular wave. Constructive interference can produce a significant increase in the amplitude. For example: if 100 waves of equal amplitude interfere constructively, then the amplitude is 100 times more than the actual amplitude of the wave.
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Need help with this!!!
15 points!!!!
Answer:
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Explanation:
As the name states, the cars of a roller coaster really do coast along the tracks. A motor pulls the cars up a high hill at the beginning of the ride. After the hill, however, the motion of the car is a result of gravity and inertia. As the cars roll down the hill, they must pick up the speed that they need to whiz through the rest of the curves, loops, twists, and bumps in the track. To learn more about designing roller coasters, read the interview with Steve Okamoto.
How did you become a roller coaster designer?
I have been fascinated with roller coasters ever since my first ride on one. I remember going to Disneyland as a kid. My mother was always upset with me because I kept looking over the sides of the rides, trying to figure out how they worked. My interest in finding out how things worked led me to study mechanical engineering. What sort of training do you have I earned a degree in product design. For this degree, I studied mechanical engineering and studio art. Product designers consider an object's form as well as its function.They also take into account the interests and abilities of the
product's consumer. Most rides and parks have some kind of theme, so I must consider marketing goals and concerns in my designs.
What is the nature of your work?
To design a roller coaster, I study site maps of the location. Then, I go to the amusement park to look at the actual site.Because most rides I design are for older parks (few parks are built from scratch), fitting a coaster around, above, and in
between existing rides and buildings is one of my biggest challenges. I also have to design how the parts of the ride will work together. The towers and structures that support the ride have to be strong enough to hold up a track and speeding cars that are full of people. The cars themselves need special wheels to keep them locked onto the track andseat belts or bars to keep the passengers safely inside. It's
like putting together a puzzle, except the pieces haven't
been cut out yet.
What advice do you have for a student who is interested in designing
roller coasters?
Studying math and science is very important. To design a successtulcoaster, I have to understand how energy is converted from one form to another as the cars move along the track. I have to calculate speeds and accelerations of the cars on each part of the
track. They have to go fast enough to make it up the next hill! I rely on my knowledge of geometry and physics to create the roller coaster's curves.loops, and dips. Sammrazie in two paragraphs
The summary of the interview with Steve Okamoto a roller coaster designer highlighted how he developed a fascination for rollercoasters and how he successfully learned how to build them.
What is the summary of the interview with Steve Okamoto?The summary of the interview with Steve Okamoto is given below.
In an interview with Steve Okamoto, a roller coaster designer, he explained that his fascination with roller coasters began at a young age, and his interest in finding out how they worked led him to study mechanical engineering and product design. As a roller coaster designer, Okamoto's work involves studying site maps, designing how the parts of the ride will work together, and fitting coasters around existing rides and buildings. He also has to consider marketing goals and concerns in his designs, as most parks have some kind of theme. Okamoto recommends that students interested in designing roller coasters should focus on studying math and science, and understanding how energy is converted from one form to another as the cars move along the track.
Overall, Okamoto's work as a roller coaster designer involves a combination of mechanical engineering, product design, and consideration for marketing goals and existing park infrastructure. To design a successful roller coaster, he relies on his knowledge of math, science, geometry, and physics to calculate speeds, accelerations, and the coaster's curves, loops, and dips. His advice for students interested in designing roller coasters is to focus on studying math and science, and understanding how energy is converted throughout the coaster's track.
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A researcher studies the amount of trash (in kgs per person) produced by households in city X. Previous research suggests that the amount of trash follows a distribution with density fe (2) --1/7 torz
The researcher is studying the amount of trash (in kgs per person) produced by households in city X, and previous research suggests that the amount of trash follows a distribution with density force fe (2) --1/7 torz.
The density function fe (2) --1/7 torz indicates the probability distribution of the amount of trash produced by households in city X. This means that the researcher can use this distribution to make predictions about the amount of trash that is likely to be produced by households in the city. The density function can be used to calculate the probability of producing a certain amount of trash per person, given the distribution.
A probability density function is a function that describes the likelihood of a continuous random variable taking on a specific value within a given range. In this case, the continuous random variable is the amount of trash (in kgs per person) produced by households in city X. The pdf provided in the question, f(e) = 1/7 for 2 ≤ e ≤ 9, indicates that the amount of trash follows a uniform distribution between 2 and 9 kgs per person.
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PLEASE HELP ME I AM TIMED!
Answer:
Well my good friend the other person did not give U a good answer, it is actually the third one
Explanation: well it is the most logical of all the answers if you think about it and a lot of the creatures we have in the water today are thought of to have once lived on land based on the fossils we still find to this very day my friend
Which shows the use of a fulcrum? Choose all that apply.
Choose all answers that are correct.
Question options:
Hands opening a bottle with bottle opener
Man moving rock with a lever
Boy using an ax to cut wood in forest
Answer:
Hands opening a bottle with bottle opener
A cart of mass m is moving with speed v on a smooth track when it encounters a vertical loop of radius r, as shown above. the cart moves along the inside of the entire loop without leaving the track. all frictional forces are negligible.Which of the following must be true for the cart to remain on the track when it is at point P?
Therefore for cart to stay here on track when it arrives at point P, the net force applied to it must be greater or equal than for the heaviness of the cart.
Describe force.The force is an impact that has the power to alter an object's motion. A mass-containing object's velocity can be altered by a force. An obvious way to describe force is as a pushed or a pull. A vector quantity is called a force since it has both strength and the direction.
Which force is the most crucial?The strongest force in existence is thought to be the strong force. The gravitation, weak, and electromagnetism forces come after it in lowest to highest.
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a Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is switched on. Based on their electron configurations, predict whether these elements are paramagnetic or diamagnetic. He, Be, C, N
Based on their electron configurations, He, Be, C, and N are predicted to be as follows:
He (Helium) is predicted to be diamagnetic.
Be (Beryllium) is predicted to be diamagnetic.
C (Carbon) is predicted to be diamagnetic.
N (Nitrogen) is predicted to be paramagnetic.
Paramagnetic substances have unpaired electrons in their electron configurations, which can align with an external magnetic field, causing an increase in magnetic susceptibility and an increase in mass reading on a Gouy balance when the field is switched on. Diamagnetic substances, on the other hand, have all their electrons paired and do not exhibit magnetic properties.
He (Helium) has a 1s² electron configuration with all its electrons paired, making it diamagnetic. Be (Beryllium) has a 1s²2s² electron configuration with all its electrons paired, also making it diamagnetic.
C (Carbon) has a 1s²2s²2p² electron configuration with all its electrons paired, making it diamagnetic as well. N (Nitrogen), however, has a 1s²2s²2p³ electron configuration with one unpaired electron in its 2p subshell, making it paramagnetic.
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With what speed would a rock of mass 115g
have to be thrown if it were to have a
wavelength of 2.03 × 10−34 m?
Planck’s constant is 6.63 × 10−34 J · s.
Answer in units of m/s.
The speed of the rock is 56.8 m/s.
Wavelength, λ = 2.03 x 10⁻³⁴m
Mass of the rock, m = 115 x 10⁻³kg
So, the kinetic energy,
1/2 mv² = hc/λ
v = √(2hc/mλ)
v = √(2 x 6.63 x 10⁻³⁴/115 x 10⁻³x2.03 x 10⁻³⁴)
v = 56.8 m/s
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What is magnetic force??
O A. A force between protons
O B. A force between two poles
O C. A force caused by air particles
O D. A force between objects with mass
Answer:
I believe it's B.
Explanation:
The force that a magnet exerts on certain materials, including other magnets, is called magnetic force. The force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other.
When a ray of light enters a glass lens surrounded by air, it slows down.
Part A:As it leaves the glass, does its speed increase, decrease, or stay the same?
Part B:Choose the best explanation from among the following:
The speed will stay the same because the speed of light is a universal constant.
The speed decreases because the speed of light decreases whenever light moves from one medium to another.
Its speed increases because the ray is now propagating in a medium with a smaller index of refraction.
Answer:
Its speed increases because the ray is now propagating in a medium with a smaller index of refraction.
Explanation:
the maximum speed of light (in a vacuum) is an universal constant in our universe (as even that is a specific medium : the space-time-continuum). not its actual speed at a specific moment and place (and medium).
so, it can never ever go faster than that. but it will adjust down and then back up again, when it enters and leaves a different medium.
see it that way : the light we see today was generated at the core of the sun. it had to literally squeeze through the rest of the sun to reach the sun's surface. it took it at least 4000 years (!) but up to hundreds of thousands of years to get there. because of the medium that is the sun.
once it reached the surface of the sun and the open vacuum of space, it broke free, "cheered" in relieve and went light speed. and then almost 8.5 minutes later it reached Earth (depending on the season or where the Earth is on its elliptical path around the sun).
When a ray of light enters a glass lens surrounded by air, it slows down due to the change in its direction caused by refraction. As the ray of light exits the glass lens and returns to the air, its speed increases.
This is because the refractive index of air is lower than that of glass, and therefore the speed of light is faster in air. The best explanation for this is: "Its speed increases because the ray is now propagating in a medium with a smaller index of refraction." This statement is consistent with the laws of refraction and the relationship between the speed of light and the refractive index of a material. In summary, when a ray of light enters a glass lens surrounded by air, it slows down due to refraction. As it exits the lens and returns to air, its speed increases due to the difference in refractive indices between the two media. Understanding the behavior of light in different media is important for a wide range of scientific and technological applications.
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Continue taking reading until the water starts to be boil
Answer:
pogggs
Explanation:
The change in frequency of a wave as its source moves in relation to an observer.
A)
Ultrasound
B)
Frequency
C)
Doppler Effect
D)
Echo
Answer: B) Frequency
Explanation:
what would be the period of the system with the original mass, but with a spring that had a stiffness constant that was two times the stiffness constant of the original spring?
The period of the system with the original mass, but with a spring that had a stiffness constant that was two times the stiffness constant of the original spring would be half of the original period.
This is because the stiffness of a spring is inversely proportional to its period, so doubling the stiffness of the spring will halve the period of the system.
When a spring is attached to a mass, the period of the system is determined by the mass and the stiffness of the spring. The period of the system is the time it takes for the mass to complete one full cycle of oscillation. As the stiffness of the spring increases, the period of the system decreases.
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