Ultrasound waves are used to measure blood- flow speeds. Suppose a device emits sound at 500 kHz, and the speed of sound in human tissue is taken to be 1540 m/s. What is the expected beat frequency if blood is flowing normally in large leg arter- ies at 2.0 cm/ s directly away from the sound source? How can you connect this analogue to the radars for example?

The angular momentum of the moon around the earth is 2.84 × 10³⁴ kgm²/sec, if the mass of the moon is 7.4 × 10²² kg.

Mass of the moon, M = 7.4 × 10²² kg

Radius of the orbital path, R = 3.8 × 10⁸ m

Time period of of one rotation, T = (27.3×86400) = 2.36 × 10⁶ seconds

Angular velocity, ω = 2π/T

ω = (2×3.14)/(2.36 × 10⁶) =  2.66 × 10⁻⁶ rad/sec

Moment of inertia of the moon around the earth, I = M×r²

I = 7.4 × 10²² × (3.8 × 10⁸)²

I = 1.068 × 10⁴⁰ kg-m²

Angular momentum of the moon, U = I × ω

= 1.068 × 10⁴⁰ × (2.66 × 10⁻⁶)

= 2.84 × 10³⁴ kg-m²/sec

To know more about angular momentum, here

https://brainly.com/question/29897173

#SPJ4

If it took 5.5 seconds for the sound of the lightning strike to reach the student, then the distance of the lightning strike from the student is 1886.5 meters.

To determine the distance from the student to the lightning strike, you would need to know the time it took for the sound of the strike to reach the student. The speed of sound in air is approximately 343 meters per second (m/s). By using the formula:

distance = speed x time

If it takes 5.5 seconds for the sound of the lightning strike to reach the student, then the distance of the lightning strike from the student is:

distance = 343 meters/second × 5.5 second

distance = 1886.5 meters

Therefore the distance is 1886.5 meters.

Also, keep in mind that the speed of sound varies with temperature, humidity, and pressure. So, if you want to get an accurate result, you'll need to take these factors into account as well. Furthermore, it's important to remember that sound travels in a straight line, so it's not always the same distance as the visual distance of the lightning strike.

To learn more about speed of sound visit: https://brainly.com/question/16012426

#SPJ4

Your question seems incomplete, but i assume the complete question was:

"Sound travels at 343m/s in the air. What distance from the student, in meters, is the lightning strike if it took 5.5 seconds for the sound of the lightning strike to reach the student?"

At -6cm from small charge on the x-axis is the electric potential zero.

Electric potential is the effort required to move a unit charge from one point to another while battling an electric field. Though any location outside the range of the electric field charge can be used, Earth is typically used as the reference point.

The diagram depicts the forces acting on a positive charge (q) that is situated between two plates (A and B) of an electric field (E). To move the charge from plate A to plate B, an equal and opposite force (F′ = qE) must be applied because the electric force F exerted by the field on the positive charge is F = qE. The work W required to move the positive charge over a distance d is W = F′d = qEd.

Two unlike charges are separated by a distance d two zero potentials points are obtained one between the charges(x)

and other out side nearer the small charge(y)

here  

x = d/((q2/q1)+1)  

And

d = 4cm,

q1 = 3,

q2 = -1

x=4/(1/3)+1=3cm

y=d(/q2/q1)-1)

then    

y = 4/(1/3)-1

  = -6cm from small charge

Thus, at -6cm from small charge on the x-axis is the electric potential zero.

Learn more about Electric potential

https://brainly.com/question/12645463

#SPJ4

Diffraction is the phenomenon occurs when light passes through a glass plate with parallel, microscopic grooves on it.

When light travels through a diffraction grating, which is made up of numerous parallel slits that are evenly spaced apart, an intriguing thing happens. A very similar interference pattern to that produced by a double slit is produced.

A diffraction grating is an optical component that separates (disperse) light made up of a variety of wavelengths (such as white light) into its individual wavelength components. The most basic kind of grating has a lot of parallel slits that are widely separated from one another.

Diffraction gratings are optical components that split polychromatic light into its underlying constituent wavelengths in instruments like spectrometers.

To know more about diffraction click here

https://brainly.com/question/12290582

#SPJ4

Answer:

Mass of the liquid (C)

Density is the ratio of mass to volume

A red corpuscle mass 3.0 10-16 kg, and 4.0 10-11 N of force is necessary for it to pull away from the plasma. Angle of rotation = = /t.

In physics, mass is a statistical expression of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the administration of a force.

The sum of matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass. For instance, even air has mass, as does a table, a desk, your sofa, a game, a glass, etc.

To know more about mass visit :

https://brainly.com/question/18064917

#SPJ4

With a little additional arithmetic, we can determine that resistance of the filament at 100 watts is roughly 145 ohms using the formula R(Resistance)=E(Voltage)/I(Amps).

The bulb's power rating is 100 watt, and the rms voltage from across bulb is 220 volts, according to the query. So, to find the resistivity of the bulb, change P=100 watts with Vrms=220 watts in the formula P=V2rmsR. As a result, the bulb has a 484 ohm resistance.

The ratio of the electric current flowing through it to the voltage applied is the definition of electrical resistance for a component in the circuit or device: if there is consistent resistance over a broad range

To know more about resistance visit ;

https://brainly.com/question/29427458

#SPJ4

Answer: False.

Explanation:

Over the last century, burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

Hope this helps :)

The mass flow of ammonium-n passed by any point in the lake after the two sources have become mixed depends on the combined rate of release from the sources.

What is the mass ?

The amount of matter that makes up a thing is measured by its mass.. It is typically measured in kilograms or grams and is an important quantity in physics and chemistry. Mass is different from weight, which is a measure of the force of gravity on an object. Mass is an intrinsic property of an object, meaning it is independent of the object's environment. Mass is conserved, meaning it cannot be created or destroyed, only changed through physical or chemical reactions.

To learn more about mass

https://brainly.com/question/19385703

#SPJ4

The change in internal energy of the air in the inflated balloon (defined as the governing system) is heated over a toaster and absorbs 125J of heat. As it expands, it does 78 kJ of work = - 78,875 J

Energy cannot be generated or destroyed; instead, it can only be transformed from one form to another, according to the basic law of thermodynamics.

The formula:

ΔE = q + w

ΔE = the internal energy (J)

q = heat added/taken away (J)

w = the system's or its own work (J)

The system absorbed heat since it was already warm, so:

q = positive.

It worked because the gas expanded, so:

w = negative.

ΔE = q + w

= 125 J + (-79 x 10³ J)

= - 78,875 J

Learn more about energy here: https://brainly.com/question/29571427

#SPJ4

The work is found to be =1.25×10 3 J. if  a spring constant of 100 n/m. if the hose is stretched by 5.00 m and then released .

Work is force applied over distance. Examples of work include lifting an object against the Earth's gravitation, driving a car up a hill, and pulling down a captive helium balloon. Work is  mechanical manifestation of energy. The standard unit of work is the joule ,equivalent to a newton.

The definition of work in physics reveals its relationship to energy  whenever work is done, energy is transferred. Work is the product of the component of the force in the direction of the displacement and the magnitude of this displacement.

To know more about work visit

https://brainly.com/question/18094932

#SPJ4

A disturbance that transfers energy from one place to another is known as a wave. Option A is the correct answer.

This refers to a disturbance that transfers energy from one place to another. A wave can take the form of elastic deformation, a variation of pressure, electric or magnetic intensity, electric potential, or temperature. Waves are of different types namely:

Properties of wave

The main properties of wave include:

Learn more about wave on

https://brainly.com/question/15937094

#SPJ1

In a limitless cosmos, there would therefore be an endless number all galaxies and planets. However, in an infinite world, there could only be finite amount if there was an infinitesimal likelihood that something would occur.

The biggest planet in own Solar System, Venus, can be viewed from Earth without the use of a telescope. Due to its constant and dazzling presence, Venus was granted the names "evening star" and "morning star."

Venus is the warmest planet within our solar system, with global temps hot enough to melt lead, thanks to its thick atmosphere that traps heat and causes a runaway greenhouse effect. Venus is around 700 degrees Fahrenheit (390 degrees Celsius) warmer that it would be without the greenhouse effect.

To know more about planet visit:

https://brainly.com/question/26756957

#SPJ4

A body of mass m has been thrown with an initial position of v0 at an angle θ with the horizontal. determine the average force that gravity develops over

The steady shift in an object's location over time is known as motion. Movement, distance, velocity, acceleration, time, and speed are used to define motion.

Motion can be classified as translational, rotational, periodic, or non-periodic. Translational motion is a type of motion where all components of an item by the same amount in the same amount of time.

To know more about motion visit:

https://brainly.com/question/22810476

#SPJ4

The force applied to an item in curvilinear motion that is pointed at the center of rotation or the center of curvature is known as a centripetal force. Mass* centripetal acceleration is used to determine

The provided ball weighs 0.35kg.

Given is a centripetal acceleration of 5 m/s2.

The centripetal force's magnitude must be determined.

Calculation

Centripetal force = mass*centripetal acceleration

                             = 0.35*5

                             =  1.75N

Hence , the centripetal force is 1.75N

To know more about solve visit:

https://brainly.com/question/14254416

#SPJ4

When a crystalline solid that is transparent, colorless, and heated. A chemical shift is seen when a light yellow-green gas is released and a glossy, malleable metal is left behind.

Chemical synthesis, or, alternatively, chemical breakdown into two or more separate molecules, occurs when one material reacts with another to create a new substance. These processes are referred to as chemical reactions, and they are often irreversible barring additional chemical reactions. Exothermic processes are those that generate heat; endothermic reactions, on the other hand, are those that may need heat in order to proceed. The science of chemistry places a lot of emphasis on comprehending chemical changes.

A clear, colorless, crystalline solid is heated. A pale yellow-green gas is given off and a shiny, malleable metal was left behind is an example of chemical change.

To know more about chemical changes, visit,

https://brainly.com/question/1222323

#SPJ4

The answer is 6, 8, 10, respectively, to the nearest integer.

An integer is a whole number (not a fraction) that can be positive, negative, or zero. Examples of integers include -5, 0, 2, 4, 7, 10, and 124. Integers are often used to count, label, or measure. Some programming languages use integers to represent different data types.

The change in decibels is calculated using the formula  Δβm = 10log10(m). Therefore, Δβ2 = 10log10(2) = 6.02 dB, Δβ4 = 10log10(4) = 8.04 dB, and Δβ8 = 10log10(8) = 10.06 dB. Therefore, the answer is 6, 8, 10, respectively, to the nearest integer.

To know more about integer click-
https://brainly.com/question/26251215
#SPJ4

The change in decibels ( Δβ2, Δβ4, and Δβ8) corresponding to m=2, m=4, and m=8 is 3.0103 dB, 6.0206 dB, 9.03 dB respectively.

A change in decibels (dB) is a measure of the relative change in sound or electrical power level. A change of 3 dB is considered a small change in level, while a change of 10 dB is considered a significant change. It is important to note that dB is a logarithmic unit, meaning that a change of 10 dB represents a ten-fold increase or decrease in power level. For example, an increase of 10 dB in sound level is equivalent to a ten-fold increase in the sound's power, while a decrease of 10 dB represents a ten-fold decrease in the sound's power.

To calculate the change in decibels (Δβ) corresponding to a change in the magnitude of the sound (m), we use the formula:

Δβ = 10 * log10(m)

where m is the ratio of the new sound pressure level to the original sound pressure level.

For m = 2:

Δβ2 = 10 * log10(2) = 3.0103 dB

For m = 4:

Δβ4 = 10 * log10(4) = 6.0206 dB

For m = 8:

Δβ8 = 10 * log10(8) = 9.03 dB

So the change in decibels corresponding to m=2, m=4, and m=8 is 3, 6, 9 dB respectively, rounded to the nearest integer.

To know more about sound visit:

https://brainly.com/question/29707602

#SPJ4

Q₁ (magnitude and sign) if the net force on q₃ is zero if the three point charges are arranged in a line. Charge q₃ = +5.00 nC and is at the origin. Charge q₂ = -3.50 nC and is at x = 5.00 cm. The charge q₁ is at x = 2.50 cm = 0.75 x 10⁻⁹ C (positive)

The electrostatic force between two charges:

F = k (q₁q₂) / r²

q₁ = x = 2.50 cm

q₂ = at position x = 5.00 cm (negative)

q₃ = at position x = 0 (positive)

By mandating that the vector sum of the two forces be zero, we can determine the charge's magnitude. Therefore:

F₁₃ + F₂₃ = 0

= {k (q₁q₂) / r²} + {k (q₁q₂) / r²} = 0

= Hence,

q₁ = - (-3 x 10⁻⁹) (2² / 4²)

= 0.75 x 10⁻⁹ C ⇒ positive

The question is incomplete, it should be:

Three point charges are arranged on a line. Charge q3 = +5.00 nC and is at the origin. Charge q2 = -3.50 nC and is at x = 5.00 cm . Charge q1 is at x = 2.50 cm . What is q1 (magnitude and sign) if the net force on q3 is zero?

Learn more about electrostatic force here: https://brainly.com/question/17692887

#SPJ4

The magnitude of the electric field is found to be 364N/c.

That's because the distance between the plates is assumed to be very small in comparison to their combined area, the electric field between parallel plates is uniform and nearly constant. Due to the interplay of the two plates' fields, the field is roughly zero outside of the plates. Equation E = V/d can be used to determine the magnitude of this type of homogeneous electric field because the field lines are parallel to one another.

y- direction = 0.005m

x direction t 2m distance => vo = 1.6 x 10^6m/s

Time of flight => t = 2m/1.6 x 10^6m/s

                 => 1.25 x 10^-8 s

y=voy t + 1/2 a t^2

0.005 = 1/2 a (1.25 x 10^-8 )^2

a=> 6.4 x 10^13m/s2

a = F/m = eE/mof electron

   => 9.1 x 10^-32 x 6.4 x 10^13 m/s2/ 1.6 x 10^-19C

 => 364N/c

Learn more about electric field here:

brainly.com/question/28561944

#SPJ4

The heat transfer method involved when the wind is blowing the heat from the fire towards the stand of the thick brush is called convection.

Convection transfers heat by moving liquids or gases. Wildfires typically produce rising columns of gas accompanied by sparks, embers, and burning twigs. These convection columns move downwind of the firefront and carry the embers that serve as the starting point for the fire. This movement of heat energy away from the ground by vertical air movement is called "free convection" or "natural convection." Hot air balloons rise because warm air/wind is less dense than cold air.

Learn more about the convection in

https://brainly.com/question/16635311

#SPJ4

aagasghk sj;mtj,d haeo[gjmaiogjms rmg.s nlk;srmnrt golaehslajkg4wP[LGAE5HK

A) runner a's distance will be 115.2 m, and runner b's distance will be 120.7 m.

Distance is a numerical measurement of how far apart two objects or points are from one another. Distance can be measured in a variety of ways including miles, kilometers, feet, and meters.

To solve this problem, we need to use the equation d = rt, where d is the distance, r is the rate, and t is the time. Since both runners are running at a constant speed, we can assume the rate (r) is the same for both.
We can calculate the rate by using the information that both runners were 64 m away from the starting point after 25 s. We can plug this information into the equation to get:
64 m = r * 25 s
Solving for r, we get:
r = 2.56 m/s
Now that we have the rate, we can plug it into the equation to calculate the distances for both runners at time t = 45 s.
For runner a (who started at t = 0s), the distance will be:
d = 2.56 m/s * 45 s
d = 115.2 m
For runner b (who started at t = 2.5 s), the distance will be:
d = 2.56 m/s * 42.5 s
d = 120.7 m

To learn more about distance
https://brainly.com/question/26550516
#SPJ4

The work that must be done on charges brought from infinity to a spherical shell of radius R = 0.100 m and total charge Q = 125 mc is 602J. Hence, option B is the correct answer to this question.

To calculate the work that must be done on charges brought from infinity to a spherical shell of radius R, we can use the formula for the electric potential energy, which is given by U = kq1q2/r

Where k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between the charges.

In this case, the work done on a single charge of q = Q/n, where Q is the total charge on the shell and n is the number of charges, brought from infinity to a distance of r = R from the center of the spherical shell is given by:

W = qU = q(kq/R) = kq^2/R

Since the total charge on the spherical shell is Q = 125 mc and the radius of the shell is R = 0.100 m, the work done on each charge is:

W = kq^2/R = (8.99x10^9 N.m^2/C^2)(125x10^-6 C)^2/(0.100 m) = 602 J

Therefore, the work that must be done on charges brought from infinity to a spherical shell of radius R = 0.100 m and total charge Q = 125 mc is 602 J.

Read more about the work done:

brainly.com/question/25573309

#SPJ4

The 48n force f must be applied to one end to make the system rotate with an angular acceleration of 4.0 rad/s2 about its center.

What is force ?

The pushing or pulling that modifies the velocity of a mass object is what is meant by the notion of force. An outside force has the ability to change a body's resting or moving status. It moves and has a size.

What is acceleration ?

Acceleration is the change in speed that occurs quickly. Generally speaking, but not always, acceleration denotes a shift in speed. Even while it travels in a circular motion, an object's velocity direction is changing, thus it keeps gaining speed.

Therefore, 48n force f must be applied to one end to make the system rotate with an angular acceleration of 4.0 rad/s2 about its center.

Learn more about force from the given link.

https://brainly.in/question/23858054

#SPJ4

This describes the concept of self-extension. When individuals are able to exercise power and control over objects and possessions, they may begin to view these things as extensions of themselves.

We may understand and express our self-identity through our possessions. When opportunities for receiving external validation of self are scarce, as can be the case as a result of institutionalization, for the elderly, things serve as crucial archives of memories of one's self-identity in the past.

William James claimed that the things, places, or even persons that carry the label "my" are what make up the material self. These things are seen as extensions of people's identities. For instance, your clothing, which you refer to as "my wardrobe," expresses certain facets of your personality.

to know more about  possessions here:

brainly.com/question/29768148

#SPJ4

(a) To find the distance between two points that differ in phase by π/3 radians, we can use the wavelength of the wave, which is given by the speed of the wave divided by the frequency:

Wavelength = Speed of wave / Frequency

Given that the frequency is 500 Hz, the wavelength is:

Wavelength = 350 m/s / 500 Hz = 0.7 m

The phase difference between the two points is equal to the difference in the phase of the wave at these points. The phase difference in radians is given by the product of the wave number and the distance between the points.

The wave number is equal to 2pi/wavelength, so:

k = 2π / wavelength = 2*π / 0.7 m = 8.6 rad/m

The distance between the two points that differ in phase by pi/3 rad is given by:

Distance = π/3 / k = π/3 / 8.6 rad/m = 0.035 m

(b) To find the phase difference between two displacements at a certain point at times 1.00 ms apart, we can use the angular frequency of the wave, which is given by the product of 2π and the frequency:

ω = 2π * frequency = 2π * 500 Hz = 3141.59 rad/s

The phase difference between two displacements at a certain point at times 1.00 ms apart is given by the product of the angular frequency and the time interval.

Given that the time interval is 1.00 ms = 0.001 s, the phase difference is:

Δφ = ω * time interval = 3141.59 rad/s * 0.001 s = 3.14 rad

Therefore, the phase difference between two displacements at a certain point at times 1.00 ms apart is 3.14 rad.

Learn more about Phase Differences here: https://brainly.com/question/14594671

#SPJ4

According to the information, we can infer that the volume of this solid is 703.7 cm³.

To calculate the volume of this solid we have to use the following formula and know this data (both base radius and height). So, if we read the statement, we can find all the neccesary information to complete this task.

Information:

To use the formula, we have to replace values of R and r (R represents large base radius and r represents small base radius).

Formula:

According to the above, the volume of this solid is 703.3 cm³.

Note: This question is incomplete because there is some information missing. Here is the complete information:

Attached image

Learn more about volume in: https://brainly.com/question/1578538

#SPJ1

Terminal voltage of top battery and bottom battery are found to be 13.82V and 10.43V.

The terminal voltage of a cell is the potential difference between its electrodes when current is extracted from it. The internal resistance of the cell is the resistance provided to the flow of electric current through it by the electrolyte inside.

Terminal voltage of top battery:

current I = 18/(2+6.6)

   => 2.09A

Terminal voltage = E - Ir

                          => 18 - (2.09 x 2)

                        = 13.82V

Terminal voltage of bottom battery:

current I = 12-(1+6.6) = 1.57A

Terminal voltage = 12 - (1.57 x 1)

                  => 10.43V

Learn more about terminal voltage here:

brainly.com/question/28199592

#SPJ4

The common velocity of clay 1 and clay 2 is 15 m/s. Option C

We know that a collision can be said to be inelastic when the momentum and the kinetic energy are not conserved. This implies that rather than having the objects move out in different directions, the objects would rather stick together and just move in the same direction.

In this case we would also need the law of the conservation of linear momentum. Recall that according to this law, the momentum before collision  would just be the same as the momentum after Collison.

Thus;

Momentum before collision = momentum after Collison

(2100 * 20) + (2500 * 0) = (2100 + 2500)v

Where v is the common velocity

v = 42000/4600

v =  15 m/s

Thus they would have the common velocity of 15 m/s

Learn more about velocity:https://brainly.com/question/18084516

#SPJ1

The net force on the dog is given by:

fnet = fgravity + felevator

As the elevator is accelerating downward, the net force is equal to the gravitational force minus the force by the elevator. So:

felevator = m x a

where m is the mass of the dog (5.0 kg) and a is the acceleration of the elevator (1.20 m/s^2).

So, fnet = m x g - m x a

fnet = |m x g - m x a| = |5.0 kg * 9.8 m/s^2 - 5.0 kg * 1.20 m/s^2| = 49 N

So the magnitude of the normal force by the elevator on the dog is 49 N.

When the elevator accelerates downward the apparent weight of the man becomes zero. This is because of the reason that both the man and the lift are moving downwards with the same acceleration 'g' and so there is no force of action and reaction between them.

Acceleration is the rate at which velocity alters with time, in terms of speed and direction. A point or an object proceeding in a straight line is accelerated if it speeds up or slows down.

To know more about speed, visit here:

https://brainly.com/question/28224010

#SPJ4

Net work done 2w is needed to accelerate an object of mass 2m from rest to velocity v.

The force that is required to move a thing a specific distance is referred to as the work done. Essentially, it is a measurement of the amount of energy that is transmitted to or from an item so that it can be moved. The result of the displace and or the component of such force applied of the particle in the displacement direction is the definition of the work performed by a force. Work is accomplished when we remove a block with a few force; the body moves more quickly. Work completed is noted as.

as we know that work done = 1/2 mv^2

as we double the m then work done will aslo become double because work done is directly proportional to the mass .

To learn more about work done visit:

https://brainly.com/question/2750803

#SPJ4