If a 2500 kg car is traveling with an acceleration of 20.2 m/s/s, what is the force acting on it?

The speed vbat at which the bat is flying is  vbat = (1/5) * vs  

What is the frequency?

The frequency of a repeating event is its number of instances per unit of time. In some cases, it is also referred to as temporal frequency or ordinary frequency to emphasize differences between spatial and angular frequencies, respectively.

Observed frequency   f   =   (v  +  vr) * f0 / (v + vs)

  given speed of sound   v   =   vs

   speed of receiver   vr  =   0

speed of source   vs    =   - vbat      ( - ve as the bat is approaching the   wall)

  a.   1. f1 = (vs/(vs − vbat))*f0

  b.   for the bat the wall is emitting waves at f1

        fnew   =   {(vs  +  vbat) / vs} * f1

        7. fnew = (vs + vbat/(vs))*f1

  c.      fnew = {(vs  +  vbat) / vs}*f1

                 =   {(vs  +  vbat) / vs} * {vs/(vs − vbat)}*f0

           (3/2) * f0  =  (vs +  vbat) / (vs - vbat) * f0

        3 * vs  -  3 * vbat   =   2 * vs  +  2 * vbat

  =>   vbat  =  (1/5) * vs  

           4. vbat = (1/5) * vs  

Hence, the speed vbat at which the bat is flying is  vbat = (1/5) * vs  

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2.20 m/s^2  is the acceleration of the elevator.

Option c is correct answered .

If you stand on a scale in an elevator accelerating upward, you feel heavier because the elevator's floor presses harder on your feet, and the scale will show a higher reading than when the elevator is at rest. On the other hand, when the elevator accelerates downward, you feel lighter.

support force F = mass x acceleration + weight

For a mass m= kg, the elevator must support its weight = mg = Newtons to hold it up at rest. If the acceleration is a= m/s² then a net force= Newtons is required to accelerate the mass.

Fnet = m a

Fn + (-Fg) = m a

a = 1020 - (85)(9.8) /85

a = 2.20  m/s^2

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Answer: C!! <3

Explanation: (a p e x)

In wireless transmission, the digital signals become weaker as they move away from the source. Hence, option (C) is correct.

Although most people take wireless data transfer for granted, when one stops to think about how it truly works, it does appear miraculous. Of course, there is a scientific explanation that a non-WLAN expert can comprehend.

In essence, the manipulation of radio waves allows for wireless data transmission. These waves are produced by creating electrical pulses in a natural way. Then, in order to transmit sound or data, these radio waves might have their amplitude or frequency altered. This procedure can be enhanced to increase the amount of data that can be communicated and the speed at which it can be transmitted.

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Answer:

greater then five

Explanation:

Answer:

Equal to 5

Explanation:

Newton's third law. Hit the baseball or kick the soccer ball with a small amount of force. The ball will not travel very far. Then, hit or kick the ball with a large amount of force and watch what happens. The ball will have an equal and opposite reaction to the amount of force it his hit with.

The radius is increasing at a rate of  0.31cm/sec.

We know the volume of the balloon is increasing at a rate of 3.3 \(ft^{3} min\)

This is expressed as:

\(\frac{dV}{dT}\) = 3.3

The volume of a sphere is given by:

V = \(\frac{4}{3}\)π\(r^{3}\)

The question asks to find the rate of which the radius is increasing when the radius is 0.65 feet.

We need to find:

\(\frac{dr}{dt}\)

Since we don't have t in our equation, we will be differentiating implicitly. We can use the chain rule for this:

\(\frac{dV}{dT}\) = \(\frac{dV}{dR}\).\(\frac{dr}{dt}\)

We already know  

\(\frac{dV}{dT}\) = 3.3

∴

3.3 =  \(\frac{dV}{dR}\).\(\frac{dr}{dt}\)

To find \(\frac{dV}{dR}\)  we differentiate  V = \(\frac{4}{3}\)π\(r^{3}\)

∴

3.3 = 4\(\frac{3.3}{5.30}\)\(r^{2}\).\(\frac{dr}{dt}\)

Dividing ,

\(\frac{3.3}{5.30}\) = \(\frac{dr}{dt}\) = 0.622 ft/min = 0.31 cm/sec

The radius is increasing at a rate of  0.31cm/sec.

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Answer:

Strains can be acute or chronic. An acute strain is caused by trauma or an injury such as a blow to the body; it can also be caused by improperly lifting heavy objects or over-stressing the muscles. Chronic strains are usually the result of overuse--prolonged, repetitive movement of the muscles and tendons.

Explanation:

Answer:

JJJJJJJJJJJJJ

Explanation:

KKKKKK

Answer:

5 Hz

Explanation:

Given:

Wave velocity ( v ) = 10 m / sec

wavelength ( λ ) = 2 m

We have to calculate Frequency ( f ) :

We know:

v = λ / t [ f = 1 / t ]

v = λ f

= > f = v / λ

Putting values here we get:

= > f = 10 / 2 Hz

= > f = 5 Hz

Hence, frequency of sound is 5 Hz.

Answer:

D

Explanation:

Secondary earthquake waves is a seismic wave that can travel through solid but cannot travel through liquid and gas.

This wave is one of the fastest traveling seismic waves.

While sound wave can travel through both solid and liquid and even gas.

Therefore, the statement that compares how secondary earthquake waves and soundwaves move is:

Sound waves can move through liquids, but secondary earthquake waves cannot.

The best answer is therefore D

The ionization nebulae so bright because D) They are regions where gas is ionized by hot, young stars. The brightness of ionization nebulae can also be influenced by the density of the gas and the intensity of the radiation emitted by the stars.

Ionization nebulae are bright because they are regions of space where gas is ionized by hot, young stars. These stars emit intense ultraviolet radiation, which ionizes the gas in the surrounding nebula and causes it to emit light at various wavelengths, including visible light.

The ionized gas in these nebulae often emits light in specific colors, such as red and green, which are characteristic of the elements that are present. For example, ionized hydrogen emits light in the red part of the spectrum, so hydrogen nebulae appear red in color.

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A flywheel of mass 3. 0g consist of a flat uniform disc of radius 0. 40m. It pivots about central axis perpendicular to its plane, moment of inertia: 2.4 x 10⁻⁴ kg m².

A) To calculate the moment of inertia of a flat uniform disc, we use the formula: I = (1/2) * M * R², where I is the moment of inertia, M is the mass, and R is the radius.

Given the flywheel's mass (3.0g) and radius (0.40m), first convert the mass to kilograms: 3.0g = 0.003 kg. Then, plug the values into the formula: I = (1/2) * 0.003 kg * (0.40m)².

The moment of inertia of the flywheel is approximately 2.4 x 10⁻⁴ kg m².

B) When a torque of 6.8 Nm acts on the flywheel, it causes angular acceleration, which can be calculated using the formula: τ = I * α, where τ is the torque, I is the moment of inertia, and α is the angular acceleration.

Rearrange the formula to find α: α = τ / I. Plugging in the values, we get: α = 6.8 Nm / (2.4 x 10⁻⁴ kg m²). The angular acceleration of the flywheel is approximately 2.83 x 10⁻⁴ rad/s². This means the flywheel will experience a significant increase in angular velocity due to the applied torque.

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Answer:

its either d or a

Explanation:

imma say d looks pretty right though

In Racial Formations reading essay, race is defined as a socio historical concept.

According to the authors of "Racial Formations," race is a sociohistorical concept that has been constructed and transformed over time through political and social struggles, scientific and medical discourses, and economic and cultural practices. The concept of race is not a fixed or natural category but rather a fluid and contested social construct that shapes and is shaped by the historical and cultural contexts in which it emerges. In other words, race is not an inherent or biological trait, but rather a product of human invention and social power relations.

I agree with this definition of race as a sociohistorical concept because it acknowledges the ways in which race is shaped and defined by social, cultural, and historical forces, rather than being determined by biological or genetic factors alone. Race is a social construct that reflects power relations and inequalities within societies, and it is constantly changing and evolving over time. This view of race recognizes that racial categories and identities are not fixed or static, but rather are dynamic and contingent upon social and cultural contexts.

While some may argue that race is a strictly biological concept, scientific research has shown that there is no genetic basis for race. The genetic variation within racial groups is actually greater than the genetic variation between racial groups, and race is not a biologically meaningful category. Instead, race is a socially constructed concept that is shaped by historical, cultural, and political factors. For example, the racial categories used in the United States have changed over time and have been influenced by social and political movements, such as the civil rights movement and immigration policy.

Hence, it is important to recognize that race is a product of social construction and power relations, rather than being based on biological or genetic differences.

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The wave of the 1800s, also known as the Second Great Awakening, was different from the First Great Awakening in several ways. Firstly, the Second Great Awakening was more widespread and lasted longer than the First Great Awakening, which occurred mainly in the mid-1700s and was centered in the New England colonies.

Secondly, the Second Great Awakening was characterized by a greater emphasis on individualism and personal religious experience, with preachers encouraging individuals to seek salvation through personal conversion and the establishment of a personal relationship with God. Thirdly, the Second Great Awakening was marked by a significant increase in the number of new religious denominations, including the Mormons, Seventh-Day Adventists, and the Disciples of Christ. Fourthly, the Second Great Awakening had a greater impact on American society as a whole, contributing to the rise of the abolitionist and women's suffrage movements. In summary, the Second Great Awakening was more widespread, emphasized individualism and personal religious experience, saw the emergence of new religious denominations, and had a greater impact on American society than the First Great Awakening.

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Answer:

where is the section?huh,I need to know

Deep surveys of the universe indicate that the largest structures in space are about 50 Mpc in size is false.

Deep surveys of the universe indicate that the largest structures in space are no larger than about 50 Mpc in size. If the universe had an edge, that fact would violate the assumption of isotropy in the cosmological principle. Hubble's law implies that the universe will expand forever.

The cosmological principle is based on two observations and an assumption, that the universe is the same everywhere, it is the same in every direction, and that the laws of physics are the same everywhere. The statement that the universe is homogeneous regards the universe on very large scales.

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(a) The speed of the ice cube is given by v = √(gR)

(c) If R is made two times larger, the required speed will decrease by a factor of √2

(d) the time required for each revolution will remain constant.

(a) The speed of the ice cube can be found using the equation for centripetal acceleration: v = √(gR), where v is the speed, g is the acceleration due to gravity, and R is the radius of the circle.

(b) No piece of data is unnecessary for the solution.

(c) If R is made two times larger, the required speed will decrease by a factor of √2. This is because the speed is inversely proportional to the square root of the radius.

(d) The time required for each revolution will stay constant. The time period of revolution is determined by the speed and radius, and since the speed changes proportionally with the radius, the time remains constant.

(e) The answers to parts (c) and (d) are not contradictory. While the speed decreases with an increase in radius, the time required for each revolution remains constant. This is because the decrease in speed is compensated by the larger circumference of the circle, resulting in the same time taken to complete one revolution.

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The complete question is:

A basin surrounding a drain has the shape of a circular cone opening upward, having everywhere an angle of 35.0° with the horizontal. A 25.0-g ice cube is set sllding around the cone without friction in a horizontal circle of radlus R. (a) Find the speed the ice cube must have as a function of R. (b) Is any piece of data unnecessary for the solution? Select-Y c)Suppose R is made two times larger. Will the required speed increase, decrease, or stay constant? Selectv If it changes, by what factor (If it does not change, enter CONSTANT.) (d) Will the time required for each revolution increase, decrease, or stay constant? Select If it changes, by what factor? (If it does not change, enter CONSTANT.) (e) Do the answer to parts (c) and (d) seem contradictory? Explain.

When you see the error message "could not find angular material core theme. most material components may not work as expected," it means that the Angular Material theme is missing, and the application is having difficulty displaying Material components.

Here are some steps to resolve this issue:

1. You should first ensure that Angular Material has been installed in your application. You may use the following command to install Angular Material:ng add ("at" symbol)angular/material

2. Then, import the necessary styles in the styles.scss file to include the Angular Material theme.

Once you've completed these steps, restart your server and see if the error has been resolved. The Material Design components should now display correctly.

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Answer:

he walked 7 miles

Explanation:

2+3.000+2.00= 7

you can add with a calculator as well

Answer:

artist

Explanation:

Answer:

In a building, heat rises. By putting the insulation in the ceiling heat will rise and get trapped at the top and fill up the entire room. The purpose of insulation is to minimize the transmission of heat within the walls, floors, and ceilings. By minimizing the transmission of heat, you not only keep the room warm but you also lower your electricity and heat bill.

Answer:

3433.4m

Explanation:

Volume_submerged = (Density_mantle / Density_mountain) * Volume_exposed

Volume_submerged_meters = Volume_submerged / 1000000

Weight_submerged = Density_mantle * Volume_submerged_meters * g

Weight_submerged = Weight_exposed

Density_mantle * Volume_submerged_meters * g = Density_mountain * Volume_exposed * g

Volume_submerged_meters = (Density_mountain / Density_mantle) * Volume_exposed

Volume_submerged_meters = (3.2 g/cm^3 / 4.1 g/cm^3) * 4400 meters

Volume_submerged_meters = (0.7805) * 4400 meters

Therefore, the total height of the mountain is 3433.4 meters.

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The velocity of the two-block system at the top of the ramp is half the initial velocity of the second block. However, the force due to gravity exerted on both blocks as they travel up the ramp is not relevant to the conservation of momentum because it is a conservative force that does not affect the total momentum of the system.

The total momentum of the system before the collision is equal to the momentum of the second block, which is given by:

p = mv0

where m is the mass of each block, and v0 is the initial velocity of the second block.

After the collision, the two blocks move together with an unknown velocity vr. The total momentum of the system after the collision is:

p' = (2m)vr

where 2m is the total mass of the two blocks, and vr is the final velocity of the system.

The conservation of momentum states that the total momentum of an isolated system remains constant, provided no external forces act on it. Therefore, the total momentum of the system before the collision is equal to the total momentum of the system after the collision:

p = p'

Substituting the expressions for p and p' gives:

mv0 = (2m)vr

Simplifying gives:

vr = v0/2

The velocity of the system can be measured to confirm that the conservation of momentum applies to the system.

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if sufficiently high temperatures (R) are achieved in the laboratory, nuclear fusion (S) becomes a reality, and as a result, the world's energy problems (E) will be solved.

C=  Funding for nuclear fusion will be cut.

H =  Supply of hydrogen fuel is limited.

R = Sufficiently high temperatures are achieved in the laboratory.

S =  Nuclear fusion becomes a reality.

E = World's energy problems are solved.

We then represent the statements as:

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Answer:

true

Explanation:

the explanation is we would have been roasted if they weren't to weak

A radio wave travels at the speed of light, which is equal to approximately 300,000 km/s.

So, to travel a distance of 998.25 km, the time needed is:

Therefore the time required is approximately 3327.5 microseconds.

Suppose that vector C = A - B, under normal circumstances, the length of vector C is not equal to the sum of the lengths of vectors A and B. The correct option is 4.

Vector C's length, denoted as ||C||, is not always equal to the sum of vectors A and B's lengths, denoted as ||A|| + ||B||.

Subtraction of two parallel vectors results in a vector with zero magnitude when A and B are parallel (option 1). ||C|| = 0, which is not equal to ||A|| + ||B|| unless both A and B have zero length.

When A and B are pointing in opposing directions (option 2), subtracting one vector from the other produces a vector with a magnitude equal to the difference between their magnitudes. ||C|| = ||A|| - ||B|| in this case, which is not equal to ||A|| + ||B|| unless ||B|| = 0.

Thus, the correct option is 4.

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Answer:

A circular pizza has a angle of 360 degrees. When you cut it into 3 equal pieces you divide 360 by 3,you get 120 degrees. And following the conversion of 120 degree into radian you get 2pie/3 radians.

Answer:

Explanation:

The total degree of the circle = 360°

It is divided into 3 equal parts, so each part becomes 360 / 3 = 120°

conversion of 120 degree into radian you get 2pie/3 radians.

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