A car of mass 1500kg rounds a curve of radius 250m at 90km/hr. Calculate the centripetal force acting on it.

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

The total mechanical energy of the bicyclist is 1400 J, obtained by adding her potential energy of 720 J and kinetic energy of 680 J. The correct answer is option B.

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The displacement over the time interval [0, 10] is -130 meters, and the distance traveled is 130 meters.To find the displacement and distance traveled over the time interval [0, 10] for the particle with velocity v(t) = 3t^2 - 30t + 63, we need to integrate the velocity function.

The displacement is given by the definite integral of the velocity function over the interval [0, 10]:

Displacement = ∫[0, 10] (3t^2 - 30t + 63) dt

To calculate this integral, we need to find the antiderivative of the velocity function. Taking the antiderivative of each term, we get:

Displacement = t^3 - 15t^2 + 63t | [0, 10]

Now we substitute the upper and lower limits of integration:

Displacement = (10^3 - 15(10)^2 + 63(10)) - (0^3 - 15(0)^2 + 63(0))

Simplifying the expression:

Displacement = (1000 - 1500 + 630) - (0 - 0 + 0)

Displacement = -130 meters

The displacement over the time interval [0, 10] is -130 meters.

To find the distance traveled, we take the integral of the absolute value of the velocity function over the interval [0, 10]:

Distance = ∫[0, 10] |3t^2 - 30t + 63| dt

This involves evaluating the integral separately for the positive and negative parts of the velocity function. However, since the velocity function is always positive over the interval [0, 10], the distance traveled is equal to the displacement, which is 130 meters.

Therefore, the displacement over the time interval [0, 10] is -130 meters, and the distance traveled is 130 meters.

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Based on the information provided, it seems that the question is related to a physics experiment involving collisions. The question asks about the percentage differences between the total momentum before and after the collision, and whether these differences indicate that momentum is conserved.

In physics, momentum is defined as the product of mass and velocity. When two objects collide, they exchange momentum, and the total momentum of the system should remain constant if no external forces act on the system. This is known as the principle of conservation of momentum. In the experiment described in the question, the collisions were conducted in three different trials, labeled I, II, and III. For each trial, the percentage difference between the total momentum before and after the collision was calculated. If the difference was less than 10%, it was considered good evidence that momentum was conserved. If the difference was less than 5%, it was considered very good evidence. Based on the data collected, it can be determined to what extent momentum was conserved in the different trials. If the percentage differences were within the acceptable range (i.e., less than 10% or less than 5%), it would suggest that momentum was conserved in those trials. However, if the differences were greater than 10%, it would indicate that momentum was not conserved, and there may be external forces acting on the system that are affecting the momentum. Therefore, without knowing the actual percentage differences obtained in the experiment, it is not possible to determine to what extent momentum was conserved. The data collected would need to be analyzed to determine whether momentum was conserved in each of the three trials.

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Answer:

east

Explanation:

15km east

_______________

              X________

                    8km west

so you are where the xX is so you are still in the eastward direction

Answer:

v = 4.4 m / s

Explanation:

Unfortunately, the exercise scheme does not appear. Let's analyze the problem the marble leaves point A with an initial velocity, goes down and then rises to a given height where its velocity is zero, in the whole trajectory they tell us that the resistance is zero, so we can use the conservation relations of the enegy.

Starting point. Point A

          Em₀ = K + U = ½ m v2 + mg y_a

point B.

          Em_f = U = m g y

the energy is conserved

         Em₀ = Em_f

         ½ m v² + mg y_a = m g y

        ½ m v² = m g (y -y_a)

         v = \(\sqrt {2g ( y - y_a)}\)

         In the exercise the diagram is not seen, but the height of point A must be known, suppose that y_a = 4 m

       v = \(\sqrt{ 2 \ 9.8 ( 5 -4)}\)

       v = 4.4 m / s

Answer:

232 N

Explanation:

By Hooke's law, the force applied to a spring is proportional to the stretch of the spring, so

F = kx

Where F is the force, k is the spring constant and x is how much it is stretched.

So, replacing k by 58N/cm and x by 4 cm, we get

F = (58 N/cm)(4 cm)

F = 232 N

Therefore, the force applied is 232 N

The net electrostatic force acting on the charged particle q₂ is 28.7 N.

Charge on the first particle, q₁ = 8 μC

Charge on the second particle, q₂ = 3.5 μC

Charge on the third particle, q₃ = - 2.5 μC

Distance between the charges q₁ and q₂, r₁ = 0.1 m

Distance between the charges, q₂ and q₃, r₂ = 0.15 m

Electrostatic force exerted on the charged particle q₂ and q₁,

F₁ = 1/4πε₀ (q₁q₂/r₁²)

F₁ = 9 x 10⁹ x (8 x 10⁻⁶ x 3.5 x 10⁻⁶)/(0.1)²

F₁ = 25.2 N

Electrostatic force exerted on the charged particle q₂ by q₃,

F₂ = 1/4πε₀ (q₂q₃/r₂²)

F₂ = 9 x 10⁹ x (3.5 x 10⁻⁶x -2.5 x 10⁻⁶)/(0.15)²

F₂ = -78.75 x 10⁻³/22.5 x 10⁻³

F₂ = -3.5 N

The net electrostatic force acting on the charged particle q₂ is,

F = F₁ - F₂

F = 25.2 - -3.5

F = 25.2 + 3.5

F = 28.7 N

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Answer:

The force of the finger causes the books to accelerate and fall.

Explanation:

Answer:

Explanation:

1.) A line of dominos is knocked down. Which explanation is true?

ANSWER: An increase in force caused an increase in acceleration.

2.) When raindrops form, the force of gravity pulls them toward the ground. Which statement is correct about this chain of events?

ANSWER: The force of gravity causes the raindrops to accelerate.

3.) A student observes that for the same net force, heavier objects accelerate less. Which statement describes a correct conclusion?

ANSWER: There is a negative correlation between mass and acceleration.

There is a negative correlation between mass and acceleration.

4.) A nonzero net force acts on a moving ball, and the ball comes to a stop. Which statement is correct about the relationship between the net force and the ball's movement?

ANSWER: The net force causes a decrease in acceleration because without the force the ball's velocity would remain the same.

5.) A student places five books next to each other on their ends. She then pushes the first book with her finger, and a few seconds later, the last book falls. Which statement is correct about this chain of events?

ANSWER: The force of the finger causes the books to accelerate and fall.

I hope this helps <33

Answer:

You would need to be 33 feet deep.

Explanation:

Answer:

Explanation:

The equation for acceleration is

\(a=\frac{v_f-v_0}{t}\) where vf is the final velocity and v0 is the initial velocity. For us, the final velocity is 25 m/s and the initial is 0 because the train started from resting position. Filling in and solving for a:

\(a=\frac{25-0}{30.0}\) so

a = .83 m/s/s

The acceleration will be zero when speed is plotted against time.

As the velocity slope is a straight line when distance time graph is considered. Straight slope indicates increasing velocity constantly with time.

Acceleration:

                    The rate of change of velocity with respect to time. it is a vector quantity (both magnitude and direction). SI unit of acceleration is given as meter/second square

        speed= Distance/Time

        Acceleration = velocity/ Time

acceleration is equal to differentiation of velocity with time.

  (differentiation of constant= zero)

differentiation of constant velocity gives zero acceleration.

Thus  the graph with constant velocity acceleration will be zero.

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An ecosystem has a single path of energy flow. Plants absorb energy from the sun, which is then transferred to organisms that eat plants, which are then transferred to organisms that eat those organisms, and so on. An ecosystem as a whole experiences a straight, unidirectional flow of energy as a result.

Sunlight is converted into chemical energy or food by producers. When consumers eat producers, they absorb some of that energy. When eaten, they also transfer some of their energy to other consumers. Energy moves from one living creature to another in this way.

According to the Law of Conservation of Energy, energy cannot be created or destroyed.

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Answer:

Passive range of motion can be defined as what is achieved when an outside force, such as a therapist, causes movement of a joint. It is usually the maximum range of motion. Active range of motion is what can be achieved when opposing muscles contract and relax, resulting in joint movement

The angle of incline of the hill above the horizontal is 8.81°.

Since the hill has a 15.5% grade is one that rises 15.5 m vertically for every 100.0 m of distance in the horizontal direction.

The tangent of the angle of the incline of the hill, Ф is

tanФ = vertical rise/horizontal distance = grade of hill

Now, the vertical rise = 15.5 m and the horizontal distance = 100.0 m

So, substituting the values of the variables into the equation, we have

tanФ = vertical rise/horizontal run

tanФ = 15.5 m/100.0 m

tanФ = 0.155

Taking inverse tan of both sides, we have

Ф = tan⁻¹(0.155)

Ф = 8.81°

So, the angle of incline of the hill above the horizontal is 8.81°.

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1. External respiration refers to the exchange of gases (oxygen and carbon dioxide) between the lungs and the external environment. It involves inhalation of oxygen-rich air into the lungs and the diffusion of oxygen into the bloodstream, while carbon dioxide diffuses out of the bloodstream into the lungs to be exhaled.

Internal respiration, on the other hand, is the exchange of gases between the blood and the body tissues. It occurs at the cellular level, where oxygen diffuses from the blood into the tissues, and carbon dioxide diffuses from the tissues into the blood.

2. Air movement in and out of the lungs is governed by the principles of pressure gradients and Boyle's law. During inhalation, the diaphragm and intercostal muscles contract, expanding the thoracic cavity and decreasing the pressure inside the lungs, causing air to rush in. During exhalation, the muscles relax, the thoracic cavity decreases in volume, and the pressure inside the lungs increases, causing air to be expelled.

3. Gas diffusion in and out of blood and body tissues is facilitated by the principle of concentration gradients. Oxygen moves from areas of higher partial pressure (in the lungs or blood) to areas of lower partial pressure (in the tissues), while carbon dioxide moves in the opposite direction. The exchange occurs across the thin walls of capillaries, where oxygen and carbon dioxide molecules passively diffuse based on their concentration gradients.

4. Hemoglobin is a protein in red blood cells that binds with oxygen in the lungs to form oxyhemoglobin. It serves as a carrier molecule, transporting oxygen from the lungs to the body tissues. Additionally, hemoglobin also aids in the transport of carbon dioxide, binding with it to form carbaminohemoglobin, which is then carried back to the lungs to be exhaled.

5. Age-related changes in the respiratory system include a decrease in lung elasticity, reduced muscle strength, and decreased lung capacity. The lungs become less efficient in gas exchange, leading to reduced oxygen uptake and impaired carbon dioxide removal. The respiratory muscles may weaken, affecting the ability to generate sufficient airflow. These changes can result in decreased respiratory function and increased susceptibility to respiratory diseases in older individuals.

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Answer:

option C

since F=ma

the acceleration of an object depends on the object's mass and the net applied force

Answer:

First, let's find the initial angular momentum of the system before the clay hits the ball. Since the wheel is rotating counterclockwise, the direction of the angular momentum is into the page (out of the screen). The initial angular momentum of the system is:

L1 = Iω1

where I is the moment of inertia of the wheel and ω1 is its initial angular velocity.

The moment of inertia of the wheel can be calculated using the formula:

I = Σmr^2

where Σmr^2 is the sum of the products of the mass of each ball (m) and the square of its distance from the center of the wheel (r). Since all the balls are equidistant from the center, we can simplify this to:

I = 8m(0.7)^2 = 3.136m

where m is the mass of each ball.

Substituting the given values, we get:

I = 8(0.6)(0.7)^2 = 1.176 kg·m^2

The initial angular velocity is ω1 = 0.24 rad/s. Therefore:

L1 = Iω1 = (1.176 kg·m^2)(0.24 rad/s) = 0.28224 kg·m^2/s

When the clay hits the ball, it sticks to it, and the ball starts to rotate with the same angular velocity as the wheel. Let ω2 be the final angular velocity of the system after the collision. Then the final angular momentum of the system is:

L2 = Iω2 + mvR

where m is the mass of the clay, v is its velocity just before the collision, and R is the distance of the point of impact from the center of the wheel.

Substituting the given values, we get:

L2 = (1.176 kg·m^2)ω2 + (0.20 kg)(7 m/s)(0.7 m)

L2 = 1.176ω2 + 0.588 kg·m^2/s

Since angular momentum is conserved, we have L1 = L2. Equating the two expressions for L and solving for ω2, we get:

ω2 = (L1 - 0.588 kg·m^2/s) / 1.176 kg·m^2

ω2 = (0.28224 kg·m^2/s - 0.588 kg·m^2/s) / 1.176 kg·m^2

ω2 = -0.2214 rad/s

The negative sign indicates that the direction of the angular velocity is clockwise, opposite to the initial direction of rotation. Therefore, the final angular velocity of the system after the collision is 0.2214 rad/s clockwise.

Finally, we can calculate the new kinetic energy of the system after the collision. The initial kinetic energy is:

K1 = (1/2)Iω1^2

Substituting the given values, we get:

K1 = (1/2)(1.176 kg·m^2)(0.24 rad/s)^2 = 0.03372 J

The final kinetic energy is:

K2 = (1/2)Iω2^2

Substituting the calculated value of ω2, we get:

K2 = (1/2)(1.176 kg·m^2)(0.2214 rad/s)^2 = 0.01408 J

Therefore, the new kinetic energy of the system after the collision is 0.01408 J.

Therefore, the new kinetic energy of the system after the collision is 0.01408 J.

First, let's find the initial angular momentum of the system before the clay hits the ball. Since the wheel is rotating counterclockwise, the direction of the angular momentum is into the page (out of the screen). The initial angular momentum of the system is:

L1 = Iω1

where I is the moment of inertia of the wheel and ω1 is its initial angular velocity.

The moment of inertia of the wheel can be calculated using the formula:

I =

where Σ\(mr^2\) is the sum of the products of the mass of each ball (m) and the square of its  from the center of the wheel (r). Since all the balls are equidistant from the center, we can simplify this to:

I = \(8m(0.7)^2\) = 3.136m

where m is the mass of each ball.

Substituting the given values, we get:

I = \(8(0.6)(0.7)^2 = 1.176 kg * m^2\)

The initial angular velocity is ω1 = 0.24 rad/s. Therefore:

Since angular momentum is conserved, we have L1 = L2. Equating the two expressions for L and solving for ω2, we get:

\(w2 = (L1 - 0.588 kgm^2/s) / 1.176 kgm^2\\w2 = (0.28224 kgm^2/s - 0.588 kgm^2/s) / 1.176 kgm^2\\w2 = -0.2214 rad/s\)

The negative sign indicates that the direction of the angular velocity is clockwise, opposite to the initial direction of rotation. Therefore, the final angular velocity of the system after the collision is 0.2214 rad/s clockwise.

Finally, we can calculate the new kinetic energy of the system after the collision. The initial kinetic energy is:

K2 = \((1/2)Iw_2^2\)

Substituting the calculated value of ω2, we get:

K2 = \((1/2)(1.176 kgm^2)(0.2214 rad/s)^2 \\= 0.01408 J\)

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To solve this we must be knowing each and every concept related to  sound waves. Therefore, a sound waves change as they spread out in a spherical pattern, they go up and down.

A sound is a type of energy or a vibration that moves through a material such as air or water. Sound may pass through with a gaseous medium as well. It is anything that is audible. The speed that sound varies depending on the medium.

A wave is a medium that transmits energy from one location to another. Waves are classified into three types: transverse waves, longitudinal waves, or surface waves. A sound waves change as they spread out in a spherical pattern, they go up and down.

Therefore, a sound waves change as they spread out in a spherical pattern, they go up and down.

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Answer:

blue

Explanation:

blue is the only color being reflected, meaning it's the only one that will be visible

The significance of a source in research is crucial as it determines the reliability and validity of the information presented. A credible source is important because it ensures that the information presented is accurate and trustworthy.

Using sources that are not credible or reliable can lead to the spread of misinformation, which can have practical consequences such as wrong decisions and actions based on incorrect information. Theoretical consequences could include flawed research or faulty arguments. It is important to consider the limitations, objections, or weaknesses of a source, as these can undermine its significance. This includes evaluating factors such as bias, sample size, and methodology used in the research.

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--The complete Question is, Identify the significance of the source—why is it important?—what practical or theoretical consequences might follow from the main point?—what limitations, objections, or weaknesses might be present that could serve to undermine the significance of the source?--

To calculate the Taguchi quality cost, we need to multiply the length of each piece by the Taguchi parameter T, and then sum up the costs.

Given:

Length of the first metal rod = 49.19 cm

Length of the second metal rod = 49.93 cm

a) Taguchi parameter T:

Since we don't have the specific value of T, we cannot calculate it.

b) Taguchi Quality Cost of the second metal rod:

Taguchi Quality Cost = Length of the second metal rod * Taguchi parameter T

c) Taguchi Quality Cost of the first metal rod:

Taguchi Quality Cost = Length of the first metal rod * Taguchi parameter T

d) Total Taguchi Quality Cost of the two units:

Total Taguchi Quality Cost = Taguchi Quality Cost of the first metal rod + Taguchi Quality Cost of the second metal rod

Since we don't have the Taguchi parameter T, we cannot calculate the specific values for parts (b), (c), and (d).

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ANSWERS

(a) Year - Population

• 1980 - 101,240

• 1990 - 142,949

• 2000 - 201,843

• 2010 - 285,000

(b) 2016

EXPLANATION

(a) The population (in thousands) each year is given by,

If t = 1 represents year 1971, then for each year we have to find the difference between the year and 1970.

For year 1980,

The population is 101,240.

For year 1990,

The population is 142,949.

For year 2000,

The population is 201,843.

For year 2010,

The population is 285,000.

(b) In this problem we're given the population 350,000 and we have to find in what year the county will reach that population. In other words, we have to find t and then add that to 1970 to find the year.

Let's solve for t,

Divide both sides by 71.7,

Apply natural logarithm to both sides,

Divide both sides by 0.0345,

And finally replace P and solve. Remember that P is in thousands of years, so we have to replace it by 350,

This is 46 years after 1970,

Let's see what's the population in 2016 to check the answer,

It is a bit more than 350,000. But let's see what's the population in 2015,

In 2015 population of the county won't reach 350,000. Thus, the county will have a population of 350,000 in 2016

Answer: When it reaches what?

Explanation: Provide more info.

Explanation:

3x=40-5

3x=35

x=35/3

x=11.66 or x=11 2/3

According to the Standard Model of Particle Physics, a meson is composed of (B) a quark and an antiquark. The mesons are the particles that are composed of two quarks.

They are made up of one quark and one antiquark, which binds them together via the strong nuclear force. According to the Standard Model of Particle Physics, a meson is composed of (B) a quark and an antiquark.The Standard Model of Particle Physics is a theory of particle physics that explains the behavior of subatomic particles in terms of fundamental particles and interactions. It consists of three types of particles: quarks, leptons, and bosons.Mesons are subatomic particles that are composed of two quarks.

They are made up of one quark and one antiquark, which binds them together via the strong nuclear force. Mesons are classified according to their quark composition. They are made up of a combination of up, down, and strange quarks, as well as their respective antiquarks.In conclusion, the answer to the question is that according to the Standard Model of Particle Physics, a meson is composed of a quark and an antiquark.

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If you add 2 miles from west then 2 miles east then it would 4 miles all together.

The tension in the string is 4.62N

When an external force operates at one of the ends of a rope or string, tension, a form of force (pulling force), emerges down the length of the string or rope. The string's tension has an opposing effect to the external force. One type of force is the tension in a rope. Therefore, the units of tension are equivalent to the units of force.As a result, the CGS unit is dyne while the SI unit of tension is Newton (N).Using the three tension force formulas mentioned above, it is simple to determine a rope's tension at mechanical equilibrium.

Given

m = 0.10

l = 0.75

t = 0.80

v = 2πr/t

tension, T = mv^2/t = 4.62 N

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