can sound waves propagate in vacuum if yes why if no why not??​

The energy transferred by ultrasound in the process of cleaning a watch serves two main purposes. Firstly, the high-frequency sound waves create tiny bubbles called cavitation bubbles in the cleaning solution. These bubbles implode near the surface of the watch, creating intense local energy and shock waves that dislodge dirt, debris, and contaminants. Secondly, the energy helps to agitate the cleaning solution, enhancing its ability to reach and remove particles from hard-to-reach areas of the watch. Overall, the energy from ultrasound promotes efficient and thorough cleaning of the watch by dislodging dirt and enhancing the cleaning solution's action.

Answer:

F₂ = 21.97 N

Explanation:

this is a rotational equilibrium exercise, let's write the formula

         ∑ τ = 0

          F₁ d₁ - F₂ d₂ = 0

force F₁ is 17.5 N and its distance d₁ = 0.59m, the distance d₂ = 0.47m

          F₂ = F₁ d₁ / d₂

          F₂ = 17.5 0.59 / 0.47

          F₂ = 21.97 N

Answer:

b decreases as a increases and c stays constant

It all depends on the definitions of a, b, and c, and the relationship among them. Your question doesn't give us any of this information.

Answer:

135,000 m

Explanation:

(1500 m/s) (90 s) = 135,000 m

The distance travelled by sonar pulse will be 135,000 m. Distance is a numerical representation of the distance between two objects or locations.

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The length of a wave is measured in its propagation direction. The wavelength is measured in meters, centimeters, nanometers, and other units since it is a distance measurement.

The distance travelled by sonar pulse is found as;

\(\rm d = v \times t \\\\ \rm d = 1500\times 90 \\\\ \rm d = 135,000 \ m\)

Hence, the distance travelled by sonar pulse will be 135,000 m.

To learn more about the wavelength, refer to the link;

brainly.com/question/7143261

#SPJ2

The structure indicated by the number 2 in the figure is the mitochondrion, and its functional significance is energy production through cellular respiration.

The mitochondrion is an organelle found in most eukaryotic cells, responsible for producing energy in the form of adenosine triphosphate (ATP) through a process called cellular respiration. It is often referred to as the "powerhouse" of the cell due to its crucial role in energy production.

Mitochondria have a unique double membrane structure. The outer membrane acts as a protective barrier, while the inner membrane is highly folded into structures known as cristae. These folds greatly increase the surface area available for chemical reactions and the production of ATP.The functional significance of the mitochondrion lies in its ability to generate ATP, which is the main energy currency of the cell. Through the process of cellular respiration, the mitochondria break down organic molecules, such as glucose, to extract energy and convert it into ATP. This energy is then utilized by the cell to perform various functions, including growth, movement, and maintaining cellular processes.

In addition to energy production, mitochondria also play a role in other cellular processes, such as calcium signaling, metabolism regulation, and apoptosis (programmed cell death). Their involvement in these functions underscores their importance in overall cellular health and homeostasis.In summary, the mitochondrion is a specialized organelle responsible for energy production through cellular respiration. Its structural features and unique functions make it vital for providing the necessary energy for cellular processes.

Learn more about functional significance

brainly.com/question/32786804

#SPJ11

Answer:

when a force is applied by one object to a second object, an equal and opposite force is applied back on the first object

Explanation:

Answer:

\(V=0.56~m^3\)

Explanation:

Density

It's a measure of the mass of an object or substance per unit volume. It can be calculated as:

\(\displaystyle D=\frac{M}{V}\)

Given the density of solid copper as \(D=8960~Kg/m^3\), we will calculate the volume occupied by M=5000 Kg of copper solving the above equation for V:

\(\displaystyle V=\frac{M}{D}\)

Substituting:

\(\displaystyle V=\frac{5000}{8960}\)

Calculating:

\(V=0.558~m^3\)

Expressed to two significant figures:

\(V=0.56~m^3\)

RS is a composition of rotation and reflection in the Euclidean plane E². The precise description of RS depends on the specific properties of the rotation R and reflection S.

In general, if R and S have the same axis or line of symmetry, the composition RS results in a translation. If R and S have intersecting lines of symmetry, RS yields a glide reflection. If R and S have perpendicular lines of symmetry, RS produces a rotation.

It is important to consider special cases, such as parallel lines of symmetry, coinciding axes, or perpendicular lines of reflection, as they may lead to different outcomes. The classification of isometries in E² involves understanding how rotations and reflections combine to create different transformations in the plane.

Learn more about rotation and reflection visit:

https://brainly.com/question/1859113

#SPJ11

Answer:

D

Explanation:

The amount of energy present in the matter

The height of the cliff is 8.7 meters while 65kg mass falls off a cliff and hits the ground with the velocity of 18.25m/s.

Velocity is a measure of an object's speed and direction of motion. It is a vector quantity, meaning it has both magnitude (speed) and direction. Velocity is often represented by the symbol "v" and is usually measured in meters per second (m/s). The velocity of an object can be changed by applying a force to it, causing it to accelerate. The acceleration can be positive, negative, or zero, depending on the direction and magnitude of the force.

Calculation for finding height of the cliff

The equation of motion to find the height of the cliff

\(h = vi \times t + 1/2 \times a \times t^2\)

where h is the height of the cliff, vi is the initial velocity (which is 0 m/s because the object is starting from rest), t is the time it takes to fall, and a is acceleration due to gravity \((9.8 m/s^2)\).  Final velocity of the object \((18.25 m/s)\) to find t should be used.

\(vf^2 = vi^2 + 2\times a \times h\)

\(18.25^2 = 0 + 2 \times9.8 \times h\)

Hence,

\(h = (18.25^2) / (2 \times9.8) = 170.5625 m/s^2 / 19.6 m/s^2 = 8.7 meters\)

To know more about velocity, visit:

https://brainly.com/question/80295

#SPJ1

The current flowing in the long straight wire is I = 5.20A.

The distance between the electron and the wire is d = 4.50cm = 0.045m

The speed of the electron is v = 6.20 x 10^4 m/s

The magnetic force is given by the formula,

F = (BQv)sinθ

where,

B is the magnetic field strength,

Q is the charge of the particle,

θ is the angle between the velocity of the particle and the magnetic field.

The magnitude of the magnetic field strength is given by the formula:

B = μ₀I/(2πd)

where,

μ₀ is the permeability constant of free space.

Substituting the given values in the above formula,

B = μ₀I/(2πd)= 4π × 10⁻⁷ × 5.20/(2π × 0.045)= 3.52 × 10⁻⁴ T (T stands for Tesla)

Given that the electron is traveling directly toward the wire.

Hence the angle between the velocity of the particle and the magnetic field is 90°.

sinθ = sin90° = 1

Therefore, F = BQv

Applying the formula,

F = BQv

= 3.52 x 10^-4 × 1.60 x 10^-19 × 6.20 x 10^4

= 3.29 x 10^-15 N (N stands for Newtons)

Hence, the magnitude of the force that the magnetic field of the current exerts on the electron is 3.29 x 10^-15 N.

Learn more about magnetic field:

https://brainly.com/question/7802337

#SPJ11

There are many ways to report fraud like hotlines, online reporting, email or postal mail, and in person reporting.

There are several ways to report potential fraud, waste, and abuse (FWA) depending on the situation and the reporting individual's preference.

It is important for individuals to feel confident that their report will be taken seriously and treated confidentially.

Learn more about fraud here:

https://brainly.com/question/14971645

#SPJ4

The hiker travelled south for the entire trip, the displacement is also in the south direction. Therefore, the hiker's displacement for the total trip is 3.375 km south.

To find the hiker's displacement for the total trip, calculate the total distance travelled and the direction of the displacement.

The hiker travels south for 1.5 hours with an average velocity of 0.75 km/h. Therefore, the distance traveled in this leg of the trip is given by distance = velocity * time = 0.75 km/h * 1.5 h = 1.125 km.

Similarly, the hiker travels south for 2.5 hours with an average velocity of 0.90 km/h. The distance traveled in this leg of the trip is distance = velocity * time = 0.90 km/h * 2.5 h = 2.25 km.

To calculate the total distance, add the distances of the two legs: 1.125 km + 2.25 km = 3.375 km.

To know more about displacement, visit:

https://brainly.com/question/321442

#SPJ11

The two main mechanisms involved in sea level rise are thermal expansion and the melting of land-based ice. Hard defenses can provide protection against rising sea levels and coastal erosion for the communities located directly behind them, they can have potential impacts on neighboring communities.

As the Earth's oceans absorb heat from the atmosphere, the water expands thermally, leading to an increase in sea level.

Melting of land-based ice refers to the melting of glaciers and ice sheets, such as those in Greenland and Antarctica.

Under the RCP8.5 scenario, which represents a high greenhouse gas emissions trajectory, the dominant mechanism of sea level rise is expected to be the melting of land-based ice.

The increased temperature and subsequent accelerated melting of ice sheets and glaciers would contribute significantly to rising sea levels.

Hard defenses can provide protection against rising sea levels and coastal erosion for the communities located directly behind them, they can have potential impacts on neighboring communities.

Some of these impacts include Increased erosion, altered wave patterns, loss of coastal access, coastal squeeze, and visual and aesthetic impact.

It is essential to consider these potential impacts on neighboring communities when evaluating the suitability and long-term effects of implementing sea walls as coastal protection measures.

Read more about Sea level rise.

https://brainly.com/question/3988772

#SPJ11

Answer:

F = 12000 N = 12 KN

Explanation:

First we need to find the acceleration of the bad boys by using second equation of motion:

s = Vi t + (1/2)at²

where,

s = distance covered = 5 m

Vi = Initial Velocity = 0 m/s

t = time taken = 0.5 s

a = acceleration = ?

Therefore,

5 m = (0 m/s)(0.5 s) + (1/2)a(0.5 s)²

a = 2(5 m)/(0.5 s)²

a = 40 m/s²

Now, we calculate the force applied by Newton's Second Law:

F = ma

where,

F = force = ?

m = mass of bad guys = 300 kg

Therefore,

F = (300 kg)(40 m/s²)

F = 12000 N = 12 KN

Asteroid's mass, we need to know the acceleration at its surface. However, the information provided does not specify the acceleration value.

Please provide the value of the acceleration at the asteroid's surface, and I will be able to help you calculate its mass. The flow is considered sub-critical when the Froude number is less than 1, and super-critical when the Froude number is greater than 1.The hydrogen bond is a relatively weak interaction compared to other bonds, but it plays a crucial role in various biological and chemical processes.

To know more about biological visit :

https://brainly.com/question/28584322

#SPJ11

Answer:

C

Explanation:

There is a decrease in temperature and daylight and plants produce less food.

Please mark brainliest!!

*Quick Reminder: If this is an assignment from homeschool/school, please don't forget to rephrase/summarize/reference from this answer. Keep in mind no plagiarism is allowed in school. And please don't plagiarize this answer. Thanks!*

Total momentum before collision = (1 kg * 10 m/s) + (2 kg * -5 m/s) + (3 kg * 3 m/s) = 10 kg m/s - 10 kg m/s + 9 kg m/s = 9 kg m/s

What is Collision?

A collision occurs when two or more objects come into contact with each other, and as a result, they exchange energy, momentum, and/or other physical quantities. Collisions can be either elastic or inelastic, depending on whether or not there is a loss of kinetic energy during the interaction.

To calculate the total momentum of trolleys before a collision, you need to multiply the mass of each trolley by its velocity and add up the results. The equation for momentum is:

p = m * v

where p is momentum, m is mass, and v is velocity.

Here are some examples:

Example 1:

Trolley 1: Mass = 2 kg, Velocity = 4 m/s

Trolley 2: Mass = 3 kg, Velocity = -2 m/s

Total momentum before collision = (2 kg * 4 m/s) + (3 kg * -2 m/s) = 8 kg m/s - 6 kg m/s = 2 kg m/s

Example 2:

Trolley 1: Mass = 5 kg, Velocity = 2 m/s

Trolley 2: Mass = 5 kg, Velocity = -1 m/s

Total momentum before collision = (5 kg * 2 m/s) + (5 kg * -1 m/s) = 10 kg m/s - 5 kg m/s = 5 kg m/s

Example 3:

Trolley 1: Mass = 1 kg, Velocity = 10 m/s

Trolley 2: Mass = 2 kg, Velocity = -5 m/s

Trolley 3: Mass = 3 kg, Velocity = 3 m/s

Total momentum before collision = (1 kg * 10 m/s) + (2 kg * -5 m/s) + (3 kg * 3 m/s) = 10 kg m/s - 10 kg m/s + 9 kg m/s = 9 kg m/s

Learn more about Collision from the given link

brainly.com/question/12644900

#SPJ1

The current flowing in each circuit arrangement depends on the total resistance of the circuit.

To calculate the total resistance of each circuit, we can use the formula:

Total Resistance = R1 + R2 + R3

a. To create a current of 1 ampere, we can use the following circuit:

  (check image 1)

b.  To create a current of 2 amperes, we can use the following circuit:

(check image 2)

The total resistance of this circuit is:

1 ohm + 2 ohm + 1 ohm = 4 ohms

Using Ohm's Law, we can calculate the voltage required to create a current of 2 amperes:

V = IR

V = 2A x 4 ohm = 8V

Therefore, we need to connect three batteries in series to create a voltage of 4.5V, and another three batteries in series to create a voltage of 4.5V, and connect both sets of batteries in parallel to create a voltage of 9V.

c. To create a current of 3 amperes, we can use the following circuit:

(check image 3)

The total resistance of this circuit is:

1 ohm + 1 ohm + 1 ohm = 3 ohms

Using Ohm's Law, we can calculate the voltage required to create a current of 3 amperes:

V = IR

V = 3A x 3 ohm = 9V

Therefore, we need to connect all four batteries in series to create a voltage of 6V, and then connect two sets of these batteries in parallel to create a voltage of 12V.

d. To create a current of 6 amperes, we cannot use these components as they will create a circuit with a total resistance of less than 0.25 ohms, which will exceed the maximum current that can flow through the components and may damage them. In order to create a circuit with a higher resistance that can handle a current of 6 amperes, we would need to add additional resistors in series with the bulbs.

For example, we could add a 1 ohm resistor in series with the 3 ohm bulb to create a circuit with a total resistance of 7 ohms:

(check image 4)

Learn more about series and parallel circuit here: https://brainly.com/question/26589211

#SPJ1

Answer:

women... men

Explanation:

Answer:

c. women... men

Explanation:

edge 2021

Answer:

Joule that is equal to m2*kg*s-2

Explanation:

The correct answer is JOULE

Answer:

A. electrical to light

Explanation:

A jumbo-tron video is a very large television that is most times fitted into walls and displayed along the main roads. It has a light-emitting display(LED) property. Energy transformation is the conversion of energy from one form to another.

The video screen just as a regular television in the house emits light, sound and heat energies. Electrical energy which flows from one end to another powers the jumbo-tron video screen and is thus converted into light, heat and sound energies.

The energy transformation that takes place when a jumbo-tron video screen shows an instant replay is electrical to light energy.

Energy transformation is the conversion of energy from one form to another.

Hence the energy transformation that takes place when a jumbo-tron video screen shows an instant replay is electrical to light energy.

Learn more here: https://brainly.com/question/20043384

\(\huge{ \mathfrak{ \underline{ Answer \: \: ✓ }}}\)

Which of the following is not an example of an abiotic component of an ecosystem :

A . water

B . minerals

C . sunlight

D . bacteria ✓

E . air

Bacteria is a single celled living organism.

\( \#TeeNForeveR\)

D. bacteria is not an example of an abiotic component of an ecosystem.

An ecosystem is a community of living organisms (biotic) interacting with each other and with their non-living (abiotic) environment in a specific area. It encompasses all the living and non-living components of a particular environment and the complex interactions among them.

Here,
Abiotic components are the non-living factors that influence the distribution and abundance of living organisms in an ecosystem. Examples of abiotic components include water, minerals, sunlight, air, and temperature. Bacteria, on the other hand, are living organisms and are considered as biotic components of an ecosystem.

Thus, D. bacteria is not an example of an abiotic component of an ecosystem.

Learn more about the ecosystem here:

https://brainly.com/question/13979184

#SPJ6

In Rutherford Experiment, the reason that we consider the (alpha-nucleus) interaction to be elastic scattering is due to the conservation of linear momentum.

the correct answer is E.

Linear momentum conservation is an important aspect of elastic scattering. Elastic scattering is characterized by a process in which the colliding particles' kinetic energy is conserved before and after the collision, whereas non-elastic collisions result in a net loss of kinetic energy. Elastic scattering is described as a kind of scattering in which the total kinetic energy of the colliding particles is conserved.

Alpha particles that are aimed at a thin sheet of gold foil deflect in various directions when they strike a gold atom's nucleus. Alpha particles bouncing off the gold foil's atomic nuclei is called elastic scattering.

To know more about elastic scattering visit:-

https://brainly.com/question/32752901

#SPJ11

The resultant of the two given vectors is 346.4 units.

The resultant of the three vectors is the sum of all the three vectors acting together. The resultant vector is the single vector that will represent all the three vectors in terms of magnitude and direction.

The sum of the vectors in x-direction;

Vx = V cosθ

where;

for 200 units, θ = 0⁰ (above the horizontal)

for 400 units, θ = 60⁰ (above the horizontal)

Vx = 200 cos(0) - 400 cos(60)

Vx = 0

The sum of the vectors in y-direction;

Vy = 200 sin(0) + 400 sin(60)

Vy = 346.4 units

The resultant vector is calculated as;

V = √(Vx² + Vy²)

V = √(0² + 346.4²)

V = 346.4 units

Learn more about resultant vector here: https://brainly.com/question/28047791

#SPJ1

Answer:

Economics is the study of how societies use scarce resources to produce valuable commodities and distribute them among different people.

Explanation:

The ultimate goal of economic science is to improve the living conditions of people in their everyday lives.

Hope this helps!

Answer:

the branch of knowledge concerned with the production, consumption, and transfer of wealth. (basically the study of money and not just banks but how it effects the world)

Explanation:

The average velocity of the car in m/s for the first leg is 36.2 m/s and the average velocity (in m/s) for the total trip is 7 m/s

Speed is the distance travelled per time taken. The S.I unit is m/s. The average speed is the ratio of the total distance travelled to the to time taken. While velocity is the distance travelled in a specific direction per time taken

Given that a race car traveling northward on a straight, level track at a constant speed travels 0.760 km in 21.0 s. The return trip over the same track is made in 26.0 s.

(a) The average velocity of the car in m/s for the first leg of the run will be

Velocity = (0.760 x 1000)/ 21

Velocity = 760 / 21

Velocity = 36.2 m/s

(b) The average velocity (in m/s) for the total trip will be

36.2 - (0.760 x 1000)/ 26

36.2 - (760) / 26

36.2 - 29.2

7 m/s

Therefore, the average velocity of the car in m/s for the first leg is 36.2 m/s and the average velocity (in m/s) for the total trip is 7 m/s

Learn more about Speed here: https://brainly.com/question/4931057

#SPJ1

No, this sampling method is not representative of the entire school.

To determine if Jake's sampling method is representative of the entire school, we need to consider the following:

No, this sampling method is not representative of the entire school.

1. Jake only asked members of the basketball team about their favorite sport.
2. This group is likely biased towards basketball, as they are already on the basketball team.
3. To have a representative sample, Jake should have included students from various sports teams and those not involved in sports.
4. By including a more diverse group of students, the survey results would better represent the entire school's favorite sport preferences.

Learn more about basketball team

brainly.com/question/30788152

#SPJ11