Answer:
a. Constructive interference.
b. [tex]0.34\; \rm m[/tex].
c. [tex]0.68\; \rm m[/tex].
d. [tex]1.02\; \rm m[/tex].
Explanation:
Frequency of this sound wave: [tex]f = 250\; \rm Hz = 250\; \rm s^{-1}[/tex].
Speed of this sound wave: [tex]v = 340\; \rm m \cdot s^{-1}[/tex].
Calculate the wavelength of this sound wave:
[tex]\begin{aligned} \lambda &= \frac{v}{f} \\ &= \fraac{340\; \rm m \cdot s^{-1}}{250\; \rms^{-1}} \approx 1.36\; \rm m\end{aligned}[/tex].
Path difference refers to the absolute value of the difference between:
the distance between the first source (the first speaker) and the observer, andthe distance between the second source (the second speaker) and the observer.When the observer in this question is on the line between the two speakers at [tex]d[/tex] meters from the midpoint, the corresponding path difference would be [tex]2\; d[/tex] meters. (Add [tex]d\![/tex] to the distance from the closer source, and subtract [tex]d\!\![/tex] from the distance from the other source.)
The question states that sound from the two speakers are in-phase. In other words, at every instant, the sound wave from the two speakers are at the same phase at the position of each speaker.
Because wave from the two sources are in-phase at the source:
Constructive interference happens when the path difference is an integer multiple of wavelength ([tex]k\, \lambda[/tex], where [tex]k[/tex] is an integer.) That includes: [tex]0[/tex], [tex]\lambda[/tex], [tex]2\, \lambda[/tex], etc.Destructive interference happens when the path difference is an one-half plus some integer multiple of wavelength ([tex](k + 1/2) \, \lambda[/tex], where [tex]k[/tex] is an integer.) That includes: [tex]\lambda / 2[/tex], [tex]3\, \lambda / 2[/tex], [tex]5\, \lambda / 2[/tex], etc.Path difference is [tex]0[/tex] when the observer is at the midpoint. That would correspond to constructive interference.
The first destructive interference (minimum intensity) corresponds to a path difference of [tex]\lambda / 2[/tex]. Along the line, that would be observed at [tex](1/2) \cdot (\lambda / 2) = 0.34\; \rm m[/tex] from the midpoint.
The next constructive interference (maximum intensity) would be observed when path difference is [tex]\lambda[/tex]. Along the line, that would be observed at [tex](1/2)\cdot \lambda = 0.68\; \rm m[/tex] from the midpoint.
The second destructive interference (minimum intensity) would be observed when path difference is [tex](1 + (1/2))\, \lambda[/tex]. Along the line, that would be observed at [tex](1/2) \cdot ((3/2)\cdot \lambda) = 1.02\; \rm m[/tex] from the midpoint.
HELP
as shown in the diagram, points p,q, and r are located near a positively charged object.
Which region on the map has the highest risk of future landslides?
Answer:
Reigon 1
Explanation:
It has the higest rate of landslides currently
help pls help help help
Answer:
do u still need the answer it has been 2 weeks ?
Explanation:
A gold bar contains 63.0 mol of gold, Au(s). How many atoms of gold are in the bar?
Answer:
63.0 x (6.02 x 10^23) = 3.79 x 10^25 atoms of gold
Explanation:
There are 6.02 x 10^23 representative particles in a mole of any substance. Multiply it by the number of moles, and you will get the number of representative particles (atoms, molecules, formula units)
An object is in front of a converging lens of f = 15 cm, what is the distance of the object if you know that the distance of the image is 20 cm ?
Answer:
ikn
Explanation:
Answer:
the distance is 15+20=35 cm
Which statement best describes the work and energy in these examples?
Example 1: Running a car requires gas.
Example 2: Humans require food to live.
The gas and food are examples of energy.
The gas and food are examples of work.
The gas and humans are examples of work.
The food and car are examples of energy.
Answer:
the văd and food are exemple of energy
Answer:
the gas and food are example of energy
Explanation:
EDGE 2021
Mr. LaCosta is making a circular garden for our outdoor green space. The garden has a diameter of 11m. He has to buy plastic fencing to put around the edge. The fencing costs $5.75/m. What would be the total cost before taxes?
Answer:
The total cost before taxes to fence the garden is approximately $198.71
Explanation:
The given parameters for the garden are;
The diameter of the garden, D = 11 m
The cost of the fencing, UnitC = $5.75/m
The circumference of a circle, C = π·D
Therefore, the perimeter of the garden, C = π × 11 m ≈ 34.5575 m
The total cost before taxes to fence the garden, T = C × UnitC
∴ The total cost before taxes to fence the garden, T, is given as follows;
T ≈ 34.5575 m × $5.75/m ≈ $198.71
The total cost before taxes to fence the garden, T ≈ $198.71
A roller coaster is released from the top of a track that is 125 m high. Find the rollar coaster speed when it reaches ground level.
Explanation:
A roller coaster is released from the top of a track that is 125 m high. Find the roller coaster speed when it reaches ground level. 75. A 1500 kg car, moving at a speed of 20 m/s comes to a halt. How much work was done .
HOPE IT HELPSmark me in brainliest answers please please pleaseThe roller coaster speed when it reaches to ground level is 15.65 m/sec
Given-
Roller coaster is released at a height of 125 meters.
It is known that, square of the final velocity [tex]v[/tex] of the body is equal to the sum of the square of initial velocity [tex]v_{10}[/tex] and the product of the twice of acceleration [tex]a[/tex] and displacement [tex]d[/tex]. It can be written as,
[tex]v^{2} =v_{0}^2+2ad[/tex]
Roller coaster released from rest therefore initial velocity is zero.
[tex]v^{2} =0+2ad[/tex]
[tex]v^{2} =2ad[/tex]
Roller coaster will fall towards the ground with an acceleration equal to gravity g and height of 125 m. therefore,
[tex]v^{2} =2\times g\times 125[/tex]
[tex]v^{2} =2\times 9.8\times 125[/tex]
[tex]v^{2} =2450[/tex]
[tex]v=15.65[/tex]
Hence, the roller coaster speed when it reaches to ground level is 15.65 m/sec.
For more about the velocity, follow the link below-
https://brainly.com/question/862972
3.The space heater in a room does not have a fan, but after a few minutes you feel warm air moving by you. What type of energy transfer?
2. A ball is dropped from rest. The acceleration due to gravity is 10m/s? and the time it
takes for the ball to reach the ground is 5 seconds. What was the velocity of the ball just
before it hits the ground
Answer:
STEP BY STEP
V = S/T
V= 10/5
V = 2 m/s
If a 5 kg cart is pulled with a net force of 20 Newtons. What is the magnitude, in m/s2, of the acceleration?
Answer:
F=ma
a=F/m=20/5=4 m/s^2
Why does it take 2 days longer for the Moon to go from New Moon to New Moon when viewed form the Earth than it takes for the the moon to make 1 complete rotation on its axis?
The time between two new Moon phases or two full Moon phases is 29.5 days. ... The difference of 29.5 and 27.3 is that while the Moon is orbiting the Earth, the Earth is moving along in its orbit so it takes longer for the Moon to reach the same position relative to the Sun.
Multiple-Concept Example 6 presents a model for solving this problem. As far as vertical oscillations are concerned, a certain automobile can be considered to be mounted on four identical springs, each having a spring constant of 1.21 x 105 N/m. Then, four identical passengers are seated in the car, and it is set into a vertical oscillation that has a period of 0.371 s. If the mass of the empty car is 1400 kg, determine the mass of each passenger. Assume that the mass of the car and its passengers is distributed evenly over the springs.
Answer:
[tex]71.865\ \text{kg}[/tex]
Explanation:
Mass of car = 1400 kg
T = Time period = 0.371 s
k = Spring constant = [tex]1.21\times 10^{5}\ \text{N/m}[/tex]
Time period is given by
[tex]\dfrac{1}{T}=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}\\\Rightarrow m=4\dfrac{kT^2}{4\pi^2}\\\Rightarrow m=\dfrac{4\times 1.21\times 10^5\times (0.371)^2}{4\pi^2}\\\Rightarrow m=1687.46\ \text{kg}[/tex]
The 4 in the numerator is because there are 4 springs
Mass of car with people is 1687.46 kg.
Mass of people
[tex]1687.46-1400=287.46\ \text{kg}[/tex]
Mass of each person
[tex]\dfrac{287.46}{4}=71.865\ \text{kg}[/tex]
Mass of each person is [tex]71.865\ \text{kg}[/tex].
He likes to eat (into passive voice)
Answer:
yes he does
Explanation:
Conservation of momentum
Answer:
The combined velocity of Sally and the sled is 1.688 meters per second.
Explanation:
Let suppose that Sally collides inelasticly, meaning that final velocity of Sally-sled system can be determined solely by Principle of Momentum Conservation:
[tex]m_{S}\cdot v_{S, o} + m_{s}\cdot v_{s,o} = (m_{S}+m_{s})\cdot v[/tex] (1)
Where:
[tex]m_{S}[/tex] - Mass of Sally, measured in kilograms.
[tex]m_{s}[/tex] - Mass of the sled, measured in kilograms.
[tex]v_{S,o}[/tex] - Initial velocity of Sally, measured in meters per second.
[tex]v_{s,o}[/tex] - Initial velocity of the sled, measured in meters per second.
[tex]v[/tex] - Final velocity of the Sally-sled system, measured in meters per second.
If we know that [tex]m_{S} = 54\,kg[/tex], [tex]m_{s} = 10\,kg[/tex], [tex]v_{S,o} = 2\,\frac{m}{s}[/tex] and [tex]v_{s,o} = 0\,\frac{m}{s}[/tex], then the final velocity of the system is:
[tex]v = \frac{m_{S}\cdot v_{S,o}+m_{s}\cdot v_{s,o}}{m_{S}+m_{s}}[/tex]
[tex]v = 1.688\,\frac{m}{s}[/tex]
The combined velocity of Sally and the sled is 1.688 meters per second.
Why does the cannon move backward when the cannon ball is shot?
Answer:
This came to mind
Explanation:
when a cannon fires (in real life or in the movies) have noticed that the cannon recoils, sliding backwards after the explosion. Again, a non-zero net force on the cannon changes its momentum.
When electrons are lost, a ( )
ion is formed.
When electrons are
gained, a ( )
ion is formed.
When electrons are lost a positive ion is formed. When electrons are gained, a negative ion is formed. I hope this helps
what type of object is called the object at rest
Rest is the state of an object being stationary relative to a particular frame of reference or another object; when the position of a body with respect to its surroundings does not change with time it is said to be "at rest".
How can our family impact our word choice?
Answer:
Family dynamics significantly impact health in both positive and negative ways. Having a close-knit and supportive family provides emotional support, economic well-being, and increases overall health. However, the opposite is also true.
Explanation:
#CarryonLearning
Answer:
They play a very big role in our word choice.
Explanation:
Why? everyday we speak to them that allows us to absorb what they say. We adopt their word choice and vise versa.
the energy of moving things are called
Answer:
Kinetic Energy
Explanation:
Energy that a moving object has due to its motion is Kinetic Energy.
Motion is
displacement
an object you look at to determine if something is moving
a change of position in relation to another object
speed
Answer:
a change of position in relation to another object.
Explanation:
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.
Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.
Hence, motion is a change of position in relation to another object.
Which of the following is an uncontrollable risk factor for myocardial infarction?
weight gain
age
poor diet
cigarette smoking
Please help me lol :|
Answer:
1 is community 2 habitat 4 producer 5 consumer 6 food chain 7 predator 8 prey sorry I don't know 4
A wave has a frequency of 2 Hz. How many waves are produced in one minute?
Answer:
see below
Explanation:
2 Hz, means 2 complete waves are produced in one second, so
2 waves ----- 1 second
2 x 60 -------1 x 60
120 waves ------60 seconds
hope this helps,
please mark it
Given:
Frequency= 2Hz
Number of waves = ?
The number of waves that is been formed per seconds = frequencyThen since frequency= 2Hz then there are 2 complete waves that is formed in 1 seconds1 seconds= 2 wavesBut 60 seconds = 1 minutesNumber of waves produced in 1 minutes ( 60 seconds) = ( 2×60)= 120 waves
Therefore, the number of waves that will be formed in one minute is 120 waves
Learn more at : https://brainly.com/question/23020230
Please help?? PWEASE PWEASE PWEASE
Describe how you would draw a diagram that shows the electric field between two particles that attract each other.
Answer:
draw the two atomic structures and then focus in on the electrons either gaining or losing and draw them with arrows and dots
Explanation:
please answer of of them.
Answer:
1. 7.5 km/h
2. 1 hour, 52 minutes, 30 seconds
3. 0.8 Joules
4. 13.33 mph
5. 19456 Joules
6. 10.5 kg
Explanation:
A 1500 kg car accelerates at 3 m/s^2. What is the net force acting on the car?
Answer:
4500N
Explanation:
Force =mass into acceleration
So 1500 into 3 you will get 4500
an elevator provides 21 000 w of power during a 12 s ride. how much work does the elevator do?
Answer:
252000 J
Explanation:
W = Pt
W = (21000 w)(12 s)
W =252000 J
UM CAN SOME GIVE ME THE ANSWER PLS IM LIKE DYING I RLLY NEED THE ANSWER ITS DUE IN 2 MIN
In addition to thermal conductivity, what other properties of materials would
need to be considered when designing and building houses? Give three
suggestions.
Answer:
Wood, metal, Stone
Explanation:
Answer:
Thermal resistance,Specific Heat Capacity,Density
Explanation:
What are the two factors responsible for an object to be seen
Answer:
The source of light and the phenomenon of reflection are responsible for an object to be seen
Explanation:
Answer:
just look at the picture hope it helps