Compare the sound of thunder to the sound of a fire alarm at school. How are the wavelengths, frequencies, and amplitudes similar or different?
Answers
Answer:
The fire alarm is a higher pitch than thunder.
Explanation:
The fire alarm is a higher pitch so the wavelengths are going to be closer and the amplitude is going to be taller, and the thunder is a lower pitch, so the wavelengths are going to be farther and the amplitude is going to be smaller.
The wavelengths, frequencies, and amplitudes are different for the sound of thunder as compared to the sound of a fire alarm.
Characteristics of sound:The sound of thunder is low pitched sound, whereas the sound of a fire alarm is a high-pitched sound.
The pitch of a sound depends on the frequency of the sound, a higher frequency has a higher pitch. Whereas loudness depends on the amplitude of the sound.
For a low-pitched sound, the slope of the wave on the amplitude and time plot is flatter which means that the wavelength of the sound is larger and the frequency is smaller.
For a high-pitched sound, the slope of the wave on the amplitude and time plot is sharper which means that the wavelength of the sound is smaller and the frequency is larger.
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Related Questions
How does the Wikileaks scenario show the negative power of the media?
A. The media compromised national security.
B. The media released popular information.
C. The media got someone in trouble.
D. The media can break the law.
Answers
Answer:
B. The media released popular information.
Explanation:
We do not share the power in our media.
GIVING BRAINLIEST TO THE MOST THOUGHTFUL ANSWER
ALSO:
MERRY CHRISTMAS! HAPPY HANUKKAH ALL THAT
Answers
The velocity of the vehicle is equal to 406.5 m/s. The velocity in Km/hr is 1463.4 Km/hr.
What is the velocity?Velocity can be demonstrated as a vector measurement of the direction of the object and the rate of motion of an object. The velocity of an object can be described as the change in the body's position w.r.t. time.
Velocity can be expressed as a vector quantity as it consists of magnitude as well as direction. A mathematical formula common and simplest way to find velocity.
v = d / t
Where v is the velocity, d is the distance covered and t is the time taken by the body.
The S.I. unit for velocity can be represented as m/s and can be expressed in terms of miles per hour (mph), and kilometers per hour (kph).
Given, the distance traveled by the vehicle, d = 100 m
The time taken by vehicle = 0.246 sec
The velocity of the vehicle, v = 100/0.246 = 406.5 m/s
We know that 1km = 1000m then 1 m = 10⁻³ Km
1 hour = 60 ×60 = 3600 s
1s = 1/3600 hr
Therefore, velocity, \(\displaystyle v = 406.5 \times \frac{3600}{1000} Km/hr\)
v = 1463.4 Km/hr
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Velocity = Distance / Time = 100 m / 0.246 s = 406.50 m/s
To convert m/s to km/hr, we need to multiply the velocity by 3.6:
Velocity in km/hr = Velocity in m/s x 3.6 = 406.50 m/s x 3.6 = 1463.80 km/hr
The steps I took to convert from m/s to km/hr were to multiply the velocity in m/s by 3.6, which is the conversion factor between meters per second and kilometers per hour.
A student has measured the force output from using a lever at various effort distances and input forces. The distance over which the load travels was held constant.  The student varied the input force and the distance by which the force was applied and plotted the points using a bar graph.
The student did not label the data plotted in the bar graph. Using your knowledge of mechanical advantage, which data correspond with the input force and which data correspond with the output force?
A.
The darker bars are the input force, the lighter bars are the output force.
B.
The lighter bars are the input force, the darker bars are the output force.
Answers
Which is the definition of the equator?
A. The equator is half of a sphere, which is used to describe one half of the Earth.
B. The equator is the imaginary line that divides the Earth into two equal parts. It is also used as the basis for the word’s time zones.
The equator is the imaginary line that divides the Earth into two equal parts. It is also used as the basis for the word’s time zones.
C. The equator is an imaginary horizontal line drawn on the Earth equally between the North and South poles.
D. The equator is half of a circle used to describe the northern half of the Earth.
Answers
Answer:
D. The equator is half of a circle used to describe the northern half of the Earth.
Explanation:
hope it helps
Answer: C
Explanation: The equator divides the earth into North and South pole
4. The Himalayan Mountains tower as high as 8,854 m above sea level. The rate of plate motion is about 10 cm per year. Use the diagram to explain how the Himalayas formed. Predict how they might look in 10 million years.
Answers
Answer:
Forty million years ago, the continent of India, which was being carried northward by the Indo-Australian plate, collided with Asia forming the Himalayan mountain range (fold mountains). Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
Answer:Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
Which item produces the magnetic field in the electromagnet?
Answers
The magnet produces a magnetic field. Item A makes the magnetic field in the electromagnet.
Explanation:
Item A is called a magnet. It has a North pole and a South pole. The electrons move from the North to the south poles, creating a magnetic force.
This Magnetic field creates a magnetic field around a magnet.
Answer: D
Explanation: it is made of metal which attracts the magnetic force field
Mahiya and Mrinmoy are in a relay around a square field with each side of length 60m. First, Mahiya runs at a speed of 6 ms−1 for 60m to pass a baton to Mrinmoy. Then Mrinmoy runs 120m at 4ms−1 while Mahiya runs through the field to reach the other corner. Then Mrinmoy passes the baton. But Mahiya is now tired since she has been constantly running. So, she only runs at 3ms−1 for the final 60m. What is the average speed of the baton in ms−1?
Answers
The average speed of the baton can be determined by dividing the total distance travelled by the total time taken for that travelling.
\(Average\ Time = \frac{Total\ Distance}{Total\ Time}\)
First, we will find the total distance, by adding the distances travelled by both Mahiya and Mrinmoy, while carrying the baton.
\(Total\ Distance = Distance\ Travelled\ by\ Mahiya\ to\ pass\ the\ baton\ to\ Mrinmoy\ +\ Distance\ Travelled\ by\ Mrinmoy\ to\ pass\ the\ baton\ to\ Mahiya\ +\ Final\ Distance\ Travelled\ by\\ Mahiya\)Total Distance = 60 m + 120 m + 60 m = 240 m
Now, we will find the total time taken for this travelling. To find out the total time we will divide each distance travelled by the speed of the traveller during that distance:
\(Total\ Time = \frac{60\ m}{6\ m/s}+\frac{120\ m}{4\ m/s}+\frac{60\ m}{3\ m/s}\\\\Total\ Time = 10\ s\ +\ 30\ s\ +\ 20\ s\)
Total Time = 60 s
Now, we finally find the average speed of the baton by using the formula:
\(Average\ Time = \frac{Total\ Distance}{Total\ Time}\\\\Average\ Time = \frac{240\ m}{60\ s}\)
Average Speed = 4 ms⁻¹
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help me please 35 points and mark brainliest
Answers
1. The kinetic energy of the truck is 1959940.8 J
2. The kinetic energy of the car is 463037.04 J
1. How do i determine the kinetic energy of the truck?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of truck (m) = 6000 KgVelocity of truck (v) = 92 Km/h = 92 / 3.6 = 25.56 m/sKinetic energy of truck (KE) =?KE = ½mv²
KE = ½ × 6000 × 25.56²
KE = 1959940.8 J
Thus, the kinetic energy is 1959940.8 J
2. How do i determine the kinetic energy of the car?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of car (m) = 1200 KgVelocity of truck (v) = 100 Km/h = 100 / 3.6 = 27.78 m/sKinetic energy of car (KE) =?KE = ½mv²
KE = ½ × 1200 × 27.78²
KE = 463037.04 J
Thus, the kinetic energy is 463037.04 J
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Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
PLZ HELP
Explain how kinetic energy and potential energy change as a rollercoaster moves up and down hills on its track.
Answers
Explanation:
Before the roller coaster starts moving, it is at rest and energy at rest is potential energy. As the roller coaster moves the potential energy is converted to kinetic energy as kinetic energy is energy in motion. As it gets to the top of a hill it assumes a rest position from a height for a short time and as it comes down the potential energy is converted again to kinetic energy. This continues for the whole ride until it comes to an end.
1. What is the Hertzsprung-Russell Diagram (stars). Complete a drawing and explain.
2. What is the name of our galaxy and what is its design? Be sure to make a drawing as well.
3. What is a revolution involving planets? Rotation?
4. What is a light-year?
5. Moon phases. Find an image of the moon phases and complete it. Please include information concerning all of the cycles.
6. What is absolute and apparent magnitude?
7. Solar Eclipse-information and a picture.
8. Lunar Eclipse- information and a picture.
9. What is the moon considered to be?
10. What are examples of terrestrial planets? Gas planets? Describe some features that make them different from each other.
Answers
Answer:
9
Explanation:
the moon is a phenomenal that gives out light at night
Write a report on waves. Some questions you might consider are: What makes a wave? Why are some waves small and some large? How are waves classified? Are there different kinds of waves? What happens when a wave meets the shore? Where in the world do you find the best waves for surfing?
Answers
Answer:
The waves have energy that wave back and forth because the waves are never still, they are always moving. There are different types of waves because sometimes (like a tsunami) the waves are affected by other things like the earth plates. Portugal is one of the best places to surf because they have waves that can reach up to 6 to 15 feet high!
Explanation:
If you push a book against a wall hard enough, it will not slide down even though gravity is pulling it. Use what you know about Newton’s laws of motion to explain why the book is not falling. (giving away brainliest!)
Answers
f = coefficient of friction (u) X Normal reaction exerted by the surface (N)
So, f = u X N.
Now 'u' is a constant for given surfaces in contact ( keep in mind that it depends on both the surfaces that are in contact with each other, here wall and the book that you are pressing)
Now, Normal reaction is equal and opposite to the force exerted by an external force on the surface, PERPENDICUAL TO THE SURFACE ( or the perpendicular component of the external force). The external force exerted on the surface which is vertical to it, in this case, is equal to the force that you are applying while you are holding/pressing the book against the wall.
So, at any point of time, frictional force = u X (Force you are applying on the surface, via the book)
Or, f = u X F, where,
f = frictional force,
u = coefficient of friction, and
F = Perpendicular component of the force exerted by you on the book towards the surface.
Now direction of f -
Frictional force always act parallel to the surface and in opposite direction to the direction of motion.
In absence of friction, book will fall down, because of gravity acting on it. So friction will try to act in the opposite direction of this motion. So, upwards in this case.
If let's say you have a metal object placed between magnets, which is applying more force on it than gravity, in upwards direction; and you try to press it against the wall, the motion of object will be upwards, so friction will then act downwards.
Friction always opposes the direction of motion in which the object would have moved because of RESULTANT FORCE on it in absence of friction.
Takeaways in English (or, common observation) -
1) Harder you press the book against the wall, harder it will be for a person to move the book on the surface of the wall, while you are pressing it. Because of higher friction.
2) The more you move the book on the wall, while keep on pressing it, warmer the surface of the book which is in contact with wall will be. Because if more energy is dissipated per second to overcome friction, which gets converted to heat energy.
2.1) Harder you press, book will heat up faster.
3) Harder you press the book against the wall, lesser chance are that it will fall down. Because more frictional force is now acting on it to hold it against gravity.
4) Heavier the book, more frictional force is needed to hold it from falling, and that is why you have to press it harder to hold Heavier books.
5) That is all I can think of right now. Try applying this concept in things you see around.
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Related Questions (More Answers Below)
please help no trolls no links pls
How does changing the mass of a wheelchair affect its velocity?
Answers
Please select the word from the list that best fits the definition
Gives a pictorial indication of how far and fast an object has moved
a. speed
b. velocity
c. frame of reference
Answers
Answer: the answer is C
Explanation:
hope it helps friend :)
2. What happens to the wavelength as the frequency increases?
Answers
Answer:
the wavelength gets shorter
Explanation:
The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
Who likes horses? i mean LOVES Horses?
Answers
do footballers get paid even though they do not win a match?
Answers
Answer:
However, in general, football players are paid whether they are paid or not. However, it is clear that if they are not on the field, they will not get a win, a goal or more.
Answer:
no
Explanation:
they shouldn't get paid unless they win
i swear this is the last question
Which of these is NOT a way to think about finding ‐12−7?
A)The number 7 units to the left of ‐12 on the number line
B)The negative distance between ‐12 and 7 on the number line
C)Changing the signs and the operation: 12+−7
D)The addition expression: −12+−7
PLSSSSSSSSSSSSS
Answers
Answer:
C
Explanation:
12+-7=/=-12-7
12+-7=5
-12-7=-19
Answer:
the answer is c
Explanation:
Why is the law of gravity an example of a universal law?
A) Gravity exists between any two masses.
B) Gravity exists only on the earth and the moon.
C) Gravity exists for masses in a closed system only.
D) Gravity exists between small masses in an open system only.
Answers
Answer:
A) Gravity exists between any two masses.
Sorry I'm not good at explaining things and sorry if its not right, but I hope it helps! =)
Gravity exists between any two masses. The correct option is A.
What is gravitational law?The gravitational law states that in the universe every object having masses attract each other due to the force of attraction between them. This force of attraction is called a Gravitational force
The gravitational force is directly proportional to the product of the two masses and is inversely proportional to the distance between them. The earth is rotating around the sun due to this gravitational pull of the sun.
The formula to calculate the gravitational force is given as:-
F = GM₁M₂ / r²
Here G is the universal gravitational constant.
The law of gravity an example of universal law is that gravity exists between any two masses. It means that every object present on the earth and having mass attracts each other by the force of gravitation.
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please help need help hurry due in 30 minutes
Answers
Answer:
No, I don't agree with the friend.
Explanation:
I don't agree because the energy doesn't just "disappear it's converted to kinetic energy. due to the friction some of the energy in the system is converted to heat energy making it look like it "disappeared".
Energy can't be created nor destroyed so it definitely can't just disappear though it can be converted or transformed.
I hope that helped :)
hope this helped
Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
A mass of 80 g of KNO3 is dissolved in 100 g of water at 50 ºC. The solution is heated to 70ºC. How many more grams of potassium nitrate must be added to make the solution saturated? Explain your reasoning
Answers
50 g more potassium nitrate must be added to make the solution saturated at 70 °C.
Solubility:
It is the degree of dissolved substance at room temperature or 25 °C per \(\bold {g/100\ cm^3}\).
Saturation:
If no more solute or solid substance is dissolved in the solution, then the solution is called saturated.
Saturation increase with the increase in temperature because the kinetic energy of the particles is increased.
Therefore, 50 g more potassium nitrate must be added to make the solution saturated at 70 °C.
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Imagine that you are an auto designer. Your job is to design brakes for different automobiles. Write a four-sentence plan that explains what you need to consider about momentum when designing brakes for a heavy truck, a light truck, a small car, and a van.
Answers
Answer:
I won't write your sentences, but I'll give you some help on them.
Explanation:
For a heavy truck, I would use heavy brakes that have much more friction. That way they would be able to stop the trucks momentum.
A lighter truck I would use lighter brakes with less friction. If I had heavy ones and I need to slam on the brakes, they might damage my lighter truck.
A small car would need lighter and smaller brakes than either of the trucks, and I think that you use different brakes for cars and trucks. (not 100% sure)
In a van, I would use a size and weight in between the truck and car sizes and weight. Depending on the van size however, I might use the same ones.
Hope this helps!
Answer the following questions in the essay box below.
Why does the coil keep spinning?
Which way is electricity flowing?
Answers
Answer:
The coil keeps spinning because of the interaction between the magnetic field generated by the flow of electricity in the coil and the magnetic field of the permanent magnet surrounding it. This interaction creates a force that causes the coil to rotate continuously.
As for the direction of the electricity flow, it depends on the design of the coil and the direction of the magnetic field. If the coil is connected to a direct current (DC) source, the electricity will flow in a single direction. If the coil is connected to an alternating current (AC) source, the direction of the electricity flow will change periodically, typically many times per second.
In general, the direction of the electricity flow can be determined using Faraday's law of electromagnetic induction, which states that a changing magnetic field will induce an electromotive force (EMF) in a conductor, which will cause electricity to flow in the conductor. The direction of the induced EMF and the resulting electricity flow will depend on the direction of the changing magnetic field and the direction of the coil.
Explanation:
Answer:
The inertia of the rotating coil carries it through half of a turn, past the insulating paint. When the electric current starts to flow again, the twisting force is in the same direction as it was before. The coil continues to rotate in the same direction.
The permanent magnets exert forces on the electrical currents flowing through the loop of wire.
1. What type of current can be transmitted great distances?
O alternating O direct
Answers
Answer:Answer. Explanation: Alternating Current proved to be the most effective for distance transmission because of several great properties: AC power can be easily converted from low to high voltages and back again.
Explanation:
Answer: Alternating
Explanation: Alternating current is cheaper to generate and has fewer energy losses than direct current when transmitting electricity over long distances.
After water is heated up, its thermal enrgy becomes what energy?
Answers
After water is heated up, its thermal energy becomes kinetic energy. Kinetic energy is the energy of motion, and when water is heated, the energy of the heat causes the molecules in the water to move faster. This increase in movement results in an increase in kinetic energy.
Heat is a form of energy that is transmitted between two objects or systems that are at different temperatures. When heat is added to a substance, such as water, it increases the kinetic energy of the molecules in the substance, causing them to move faster and resulting in an increase in temperature. The thermal energy of the water is converted into kinetic energy as the molecules move faster and the water becomes hotter.
It is important to note that the transfer of heat between objects or systems is governed by the laws of thermodynamics, which dictate how energy can be transformed and exchanged.
Hope this helps
A toy train has a mass of 1.5 kg. A force of 3.0 N is acting on the train. What is the acceleration of the train?
a) 0.5 m/s²
b) 4.5 m/s²
c) 2.0 m/s²
d) 1.5 m/s²
Answers
Answer: C
Explanation:
Wow, you're in middle school and doing physics? Props to you.
So, for this problem, let's use the formula acceleration = force / mass
Plug in the numbers --
a = (3N) / (1.5kg)
a = 2.0 m/s^2
Hope this helps!!!
MM
pls what is a friendly relationship
Answers
Answer:
A relationship where both members are freindly and supportive towards each other.
Explanation:
Brainliest?
Answer:
i do not know is your are talking about boyfriend and girlfriend relationship of you are talking about friendship i am just going to say both so for a friendship they do not have to like the same thing but if they do that is cool they have to be nice to each other and understand what one of them wants to do and they have to get along if they want to have a goof friendship so for boyfriend and girlfriend it is okay for them to fight and not understand each other they have to be friends so they can no what they like to do with each other then they can go on dates together
Explanation:
hope i help sorry very long
BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.
Answers
Answer:
If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.
Hope my answer helps you ✌️
Mark BRAINLIEST