A student at a concert notices that a balloon near the large speakers moving slightly towards, then
away from the speaker during the low-frequency passages. The student explains this phenomenon by
noting that the waves of sound in air are longitudinal waves. Explain longitudinal and transverse waves
with the help of example. Describe the factors that effect propagation of sound waves?
Answers
Longitudinal waves oscillate in the same direction as the wave propagation, while transverse waves oscillate perpendicular to the direction of wave propagation, and factors that affect propagation of sound waves include medium, frequency, humidity, and obstacles in the path.
Longitudinal waves are waves that oscillate in the same direction as the direction of wave propagation. An example of a longitudinal wave is a sound wave traveling through air. As sound waves travel through the air, the air particles oscillate back and forth along the same direction as the wave propagation. This creates regions of high pressure (compressions) and low pressure (rarefactions) as the wave moves through the air.
The propagation of sound waves is affected by several factors. One of the most important factors is the medium through which the sound wave travels. Sound waves can travel through solids, liquids, and gases, but they propagate differently in each medium due to differences in the medium's properties, such as density and elasticity.
Other factors that affect the propagation of sound waves include the frequency and amplitude of the wave. Higher frequency waves tend to travel further, while higher amplitude waves tend to travel shorter distances. Additionally, the temperature and humidity of the medium can also affect the propagation of sound waves. In general, sound waves travel faster in warmer and more humid environments.
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Related Questions
What was the initial speed of a car if its speed is 40 m/s after 5 seconds of accelerating at -4 m/s²?
A. 50 m/s
B. 60 m/s
C. 25 m/s
D. 20 m/s
Answers
Answer:
\(\huge\boxed{\sf V_i=60 \ m/s}\)
Explanation:
Given Data:Final speed = \(V_f\) = 40 m/s
Time = t = 5 s
Acceleration = a = -4 m/s²
Required:Initial velocity = \(V_i\) = ?
Formula:\(\displaystyle a = \frac{V_f-V_i}{t}\)
Solution:Put the givens in the above formula
\(\displaystyle -4=\frac{40 - V_i}{5} \\\\Multiply \ -5 \ to \ both \ sides\\\\-4 \times 5 = 40 - V_i\\\\-20 =40-V_i\\\\Subtract \ 40 \ to \ both \ sides\\\\-20-40=-V_i\\\\-60\ m/s=-V_i\\\\60 \ m/s = V_i\\\\V_i=60 \ m/s\\\\\rule[225]{225}{2}\)
Which has covalent bonds?
A.) glucose
B.) table salt
C.) steel alloy
D.) Iron oxide - rust
Answers
Answer:
A.) glucose
Explanation:
Answer:
A. glucose
Explanation:
pay attention to the lesson
i really need help! please hurry and answer this. i'll give you 5 stars and everything just please answer this as fast as you can.
Answers
Answer:
Triple, double, single
Explanation:
They are all the same type of elemental bond, therefore the more of the same bond, you can only assume it would get stronger.
Get the equation for energy. Explain the physical meaning of
energy in cfd.
Answers
The equation for energy in the context of fluid dynamics, specifically in Computational Fluid Dynamics (CFD), is typically represented by the conservation of energy equation, also known as the energy equation or the first law of thermodynamics. The equation can be expressed as:
ρ * (du/dt + u * ∇u) = -∇p + ∇⋅(μ * (∇u + (∇u)^T)) + ρ * g + Q
where:
ρ is the density of the fluid
u is the velocity vector
t is time
∇u represents the gradient of velocity
p is the pressure
μ is the dynamic viscosity
g is the gravitational acceleration vector
Q represents any external heat source/sink
The physical meaning of energy in CFD is the total energy of the fluid system, which includes kinetic energy (associated with the motion of the fluid), potential energy (associated with the elevation of the fluid due to gravity), and internal energy (associated with the fluid's temperature and pressure). The energy equation describes how this total energy is conserved and transformed within the fluid system.
In CFD simulations, the energy equation plays a crucial role in modeling the energy transfer, heat transfer, and flow characteristics within the fluid. It helps in understanding how energy is distributed, dissipated, and exchanged within the fluid domain. By solving the energy equation numerically, CFD simulations can predict temperature profiles, flow patterns, heat transfer rates, and other important parameters that are essential for various engineering applications, such as designing efficient cooling systems, optimizing combustion processes, and analyzing thermal behavior in fluid flows.
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what matches ????????????????
Answers
Answer:
1st: Radiation
2nd: Conduction
3rd: Convection
Explanation:
I actually learned this before in school. Yay
True or False: In a parallel circuit, if one path is broken, electrons continue to flow to the
other paths
Answers
Answer:
false
Explanation:
this is what google said
No because the path the electricity needs to follow is broken. In a parallel circuit, electricity has more than one path to follow. Electrons can follow different paths as they flow from the negative side of the battery to the positive side.
On the dot below, which represents the book, draw and label the forces (not components)
the lowest point of its circular path. Each force must be represented by a distinct arrow stam
away from, the dot.
Answers
The dot represents the book and the forces that act on it are gravity, normal force and centripetal force.
Centripetal forceGravity is the force that pulls the book down towards the earth and is represented by an arrow pointing downwards away from the dot.The normal force is the force that acts perpendicular to the surface the book is on, and is represented by an arrow pointing outwards away from the dot.Lastly, the centripetal force is the force that pulls the book towards the center of its circular path, and is represented by an arrow pointing towards the center of the circle away from the dot.All of these forces act on the book and thus must be drawn in order to accurately represent the book's motion.The dot below represents the book, which is undergoing circular motion. There are two forces acting on it, centripetal force and gravitational force.The centripetal force is the force directed towards the centre of the circle, while the gravitational force is the force of gravity acting on the book due to its mass. Both of these forces can be represented by arrows pointing away from the dot.The centripetal force is represented by an arrow pointing inwards, towards the centre of the circle. The gravitational force is represented by an arrow pointing downwards, towards the ground. Both of these forces are acting on the book at the lowest point of its circular path.The centripetal force is responsible for keeping the book in its circular path, while the gravitational force is responsible for pulling the book down. The combination of these two forces ensures that the book stays in its circular motion.To learn more about centripetal force refer to:
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what will happen if we put a magnet in cold water
Answers
Answer:
cold water strengthens the magnetic attractive force.
Explanation:
The molecules within the magnet will move slower because they have less kinetic energy,so there is less vibration within the magnets molecules.
What is the force of gravity on a 80. kg man who is orbiting the Earth at a height 4.0 X 10 ^ 6 m above the surface ?
Answers
Answer:
I hope this might help.
I ball is thrown straight up. At the top of its path, what is its acceleration?
0 m/s^2.
O 5 m/s^2
O 10 m/s^2
20 m/s^2.
Answers
piston 2 has a diameter of 3.69 cm. in the absence of friction, determine the force required on piston 1 necessary to support an object, m, with weight 1017 n. (neglect the height difference between the bottom of the two pistons, and assume that the pistons are massless).
Answers
Pressure through the liquid is transmitted without loss.
Ppiston1 = Ppiston2
What is force?The word "force" has a specific meaning in science. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains." One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.
Given, piston1 diameter is equal to 0.721
diameter of piston 1: 3.69 cm
P = F/A
Area = pi x r^2 (r = d/2) d =3.69x10 ^-2 m
P2 = 1124 / (3.14x[3.69/2 x 10^-2]2
P1 = F/A1 = F/(3.14x[1.845/2 x 10^-2]2
P1 = p2
Canceling the same terms from both sides
The equation boils down to
1017/(3.69)2 = F/(0.721)2
The complete question is:
Piston 1 has a diameter of 0.721 and piston 2 has a diameter of 3.69 cm. in the absence of friction, determine the force required on piston 1 necessary to support an object, m, with weight 1017 n. (neglect the height difference between the bottom of the two pistons, and assume that the pistons are massless).
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The gravitational field on the surface of the earth is stronger than that on the surface of the moon. If a rock is transported from the moon to the earth, which propertie of the rock change? a. mass only b. weight only c. both mass and weight d. neither mass nor weight
Answers
When a rock is transported from the moon to the earth, both mass and weight are changed.
Explanation:
The reason why both mass and weight are changed when a rock is transported from the moon to the earth is that the gravitational field on the surface of the earth is stronger than that on the surface of the moon.
This means that the rock's mass, which is the measure of the amount of matter that an object contains, will remain the same.
However, the rock's weight, which is the force with which an object is attracted to the earth due to gravity, will be different since the gravitational pull on the moon is much weaker than that on the earth. This implies that when the rock is transported from the moon to the earth, it will experience a higher gravitational force which will cause it to weigh more compared to when it was on the moon.
Therefore, both mass and weight will change when a rock is transported from the moon to the earth.
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I will give a 5-star answer and Brainlest
Direct contact is necessary for which type of energy transfer?
A. Conduction
B. Sound Waves
C. Convection
D. Radiation
Answers
Answer:
D
Explanation:
Select the correct answer. If the resistance remains constant and the voltage doubles, what effect will that have on the power? A. The power will remain the same. B. The power will decrease by a factor of 2. C. The power will decrease by a factor of 4. D. The power will increase by a factor of 2. E. The power will increase by a factor of 4.
Answers
If the resistance remains constant and the voltage doubles, the power will increase by a factor of 4 (option E)
How do i determine the new power?The following data were obtained from the question:
Initial power (P₁) = PInitial voltage (V₁) = VResistance = ConstantNew voltage (V₂) = 2VNew power (P₂) =?P = V² / R
Resistance is constant, we have
V₁² / P₁ = V₂² / P₂
V² / P = (2V)² / P₂
V² / P = 4V² / P₂
Cross multiply
V² × P₂ = P × 4V²
Divide both side by V²
P₂ = P × 4V² / V²
P₂ = P × 4
From the above, we can conclude that the power will increase by a factor of 4 (option E)
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The energy of an electromagnetic wave increases with its frequency. With that in mind please rank the types of light in order of increasing energy (lowest energy to highest):
Answers
The types of light in order of increasing energy (lowest to highest) are: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
The energy of an electromagnetic wave is directly proportional to its frequency, as stated by the Planck-Einstein relation. Radio waves have the lowest frequency and therefore the lowest energy, followed by microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays, which have the highest frequency and energy.
Visible light, the only part of the electromagnetic spectrum visible to the human eye, has a range of energies, with violet light having higher energy than red light. X-rays and gamma rays have very high energies and can be dangerous to living organisms, while radio waves and microwaves are generally considered safe.
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Question 3 of 10
Which planet has the largest gravitational force?
A. Mercury
B. Uranus
C. Jupiter
D. Saturn
SUBMIT
Answers
have a good day!
A Bourdon pressure gauge is connected to a large tank and reads 440kPa when the barometer reads 750mmHg. What will the gauge reading be if the atmospheric pressure increases to 765mmHg ? (Basis: 750mmHg ).
Answers
The new gauge reading will be approximately 442.01 kPa when the atmospheric pressure increases to 765 mmHg.
To determine the gauge reading when the atmospheric pressure increases, we need to consider the difference between the atmospheric pressure and the pressure inside the tank. Given: Gauge reading (P_gauge) = 440 kPa Barometer reading (P_barometer) = 750 mmHg New barometer reading (P_barometer_new) = 765 mmHg
First, we need to convert the barometer readings to the same unit as the gauge reading, which is kilopascals (kPa). P_barometer = 750 mmHg * (101.325 kPa / 760 mmHg) ≈ 99.86875 kPa P_barometer_new = 765 mmHg * (101.325 kPa / 760 mmHg) ≈ 101.87934 kPa
Next, we calculate the difference in atmospheric pressure: ΔP_atm = barometer - P_barometer.Finally, we can determine the new gauge reading by adding the difference in atmospheric pressure to the initial gauge reading: P_gauge_new = P_gauge + ΔP_atm
Now let's substitute the values and calculate the new gauge reading: P_gauge_new = 440 kPa + (101.87934 kPa - 99.86875 kPa) P_gauge_new ≈ 442.01059 kPa. Therefore, the new gauge reading will be approximately 442.01 kPa when the atmospheric pressure increases to 765 mmHg.
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what produces keratin that starts the death of skin cells
Answers
Answer:
Keratinocytes are the predominant cell type of epidermis and originate in the basal layer, produce keratin, and are responsible for the formation of the epidermal water barrier by making and secreting lipids.
Answer:
Keratinocytes, which are cells in the epidermis, produce keratin, which helps create a protective barrier on the skin's outer layer [1]. As the keratinocytes produce keratin, they start to die, leading to the death of the skin cells.
Conductors of electricity *
A.Nonmetal
B-Metalloid
C-Metal
Answers
Answer:
Conductors of electricity?
The Answer is C metal :)
xXxAnimexXx
4. Two vinyl balloons with an identical charge
are given a separation distance of 52 cm. The
balloons experience a repulsive force of
2.74x103 N. Determine the magnitude of
charge on each one of the balloons.
A. 2.50x105 C
B. 4.11x10-¹4 C
C. 8.21x105 C
D. 2.87x107 C
ASAP I WILL MARK BRAINIST
Answers
Two vinyl balloons with an identical charge are given a separation distance of 52 cm. The balloons experience a repulsive force of 2.74x10³ N. then magnitude of charge on each one of the balloons is
According to the law, the strength of the electrostatic force of attraction or repulsion between two point charges is inversely proportional to the square of the distance between them and directly proportional to the product of the magnitudes of the charges. Coulomb investigated the repellent force between things with identical electrical charges:
Given,
F = 2.74x10³ N.
r = 52 × 10 ⁻² m
Coulomb's law is given by,
F = q₁q₂ ÷ 4π∈r²
2.74x10³ N = q₁q₂ ÷ 4π 8.85×10⁻¹² × (52 × 10 ⁻²)²
2.74x10³ N = q₁q₂ ÷ 3 × 10⁻¹¹
q₁q₂ = 2.74x10³ × 3 × 10⁻¹¹
q² = 8.2 × 10⁻⁸
q = 2.8 × 10⁻⁴ C
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cooling tends to lead to an increase in the amount of ice and snow, which reflects solar radiation, leading to more cooling. this process is known as:
Answers
This process is known as the ice-albedo feedback. The ice-albedo feedback is a positive feedback loop in which cooling leads to an increase in ice and snow, which in turn reflects more solar radiation back to space, leading to further cooling.
As more ice and snow accumulate, the albedo, or reflectivity, of the Earth's surface increases, which reduces the amount of solar radiation absorbed by the planet. This can have significant effects on climate, as the ice-albedo feedback can amplify changes in temperature.
For example, if the Earth's temperature begins to decrease, more ice and snow will accumulate, which will further cool the planet. This feedback loop can also work in reverse, with warming leading to less ice and snow, which reduces reflectivity and leads to further warming. The ice-albedo feedback is an important factor in the Earth's climate system and is being studied to better understand its potential impacts on the planet's future climate.
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How much energy is transferred in 10 seconds with a current of 13 amperes and a potential difference of 230 volts?
Answers
29900 J
Explanation:
Recall that
P = VI
= (230 volts)(13 A)
= 2990 watts
Also,
E = Pt
= (2990 watts)(10 s)
= 29900 J
When velocity is graphed with respect to time, what does the area under
the line represent?
A) velocity
B) distance
C) acceleration
D) displacement
Answers
Answer:
the answer is D
Explanation:
Since the velocity of the object is the derivative of the position graph, the area under the line in the velocity vs. time graph is the displacement of the object.
Is Displacement
how did clair patterson determine the age of earth
Answers
Answer:
Patterson isolated lead from fragments of a meteorite that had struck Earth thousands of years ago, and determined the age of the fragments by analyzing proportions of the lead isotopes. The meteorite is assumed to have been formed at the same time as the rest of the solar system, including Earth
Explanation:
Assume that an intercontinental ballistic missile goes from rest to a suborbital speed of 8.40 km/s in 62.0 s (the actual speed and time are classified). What is its average acceleration in m/s2 and in multiples of g (9.80 m/s2)
Answers
Answer: \(135.48\ m/s^2\) ,\(13.82g\)
Explanation:
Given
Missile velocity raises from 0 to \(8.4\ km/s\)
Time taken \(t=62\ s\)
Convert velocity into m/s
\(\Rightarrow 8.4=8.4\times 1000=8400\ m/s\)
Acceleration is the change of velocity w.r.t time
\(\Rightarrow a=\dfrac{8400-0}{62}\\\\\Rightarrow a=135.48\ m/s^2\)
In terms of gravity, it is
\(\Rightarrow \dfrac{135.483}{9.8}=13.82\)
Therefore, acceleration in terms of g is \(13.82g\)
2. A ball is dropped from a height of 52 m. The ball falls freely and reaches the ground in 75 s. What was the average speed of the ball?
Answers
Answer:
v = 0.69 m/s
Explanation:
Given that,
A ball is dropped from a height of 52 m.
The ball reaches the ground in 75 seconds
We need to find the average speed of the ball. The ball will travel a distance of 52 m in 75 s. The average speed of the ball is distance divided by time taken. So,
\(v=\dfrac{52\ m}{75\ s}\\\\v=0.69\ m/s\)
Hence, the average speed of the ball is 0.69 m/s.
Which classifications of WMD are combined in the same category when using the mnemonic B-NICE?
A.
Biological and incendiary
B.
Chemical and explosive
C.
Incendiary and explosive
D.
Radiological and nuclear
Answers
B-NICE is a mnemonic that can be used to identify biological, nuclear, incendiary, chemical, and explosive weapons of mass destruction. Chemical and explosive are combined in the same category when using the mnemonic B-NICE.
The acronym B-NICE stands for Biological, Nuclear, Incendiary, Chemical, and Explosive, and it is a simple way of categorizing various types of weapons of mass destruction, including those that might be used in a terrorist attack. B-NICE is not a comprehensive list of all possible WMD classifications, but it covers the most commonly used classifications. All of these classifications of WMDs have the potential to cause significant damage and loss of life, and each has unique characteristics that make it a particular concern to those charged with national security. WMDs, as the name implies, are weapons that have the potential to cause mass destruction on a large scale. As such, they are a significant concern for national security and public safety.
When using the mnemonic B-NICE, the chemical and explosive classifications of WMDs are combined in the same category.
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Which one of the following is NOT a phenotype?
O Red Hair
O Brown Eyes
O Red/Green Blood
O Five foot tall girl
O These are all phenotypes
Answers
7. Convert 746 days to centuries.
Answers
Answer: 0.0208 Centuries
Explanation:
There is 2.739*10^-5 centuries per 1 day.
We can take 746 days and multiply it by that 2.7 number to get how many centuries are in 746 days.
\(746 *(2.793*10^{-5})\) = 0.0208 centuries
What does a simple pulley do?
A. It makes you have to pull harder on the rope.
B. It increases the force.
O O O O
C. It redirects the force.
D. It makes the load heavier.
Answers
Answer:
C. It redirects the force