A 2.5 kg box is pulled straight to the right with a force of 16N.
Since it is sliding horizontally on a surface, what is the normal force (FN) the floor supports it with?

According to the question Aluminum Iron Copper Silver and Lead  could potentially be.

Copper is a chemical element with the symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high electrical and thermal conductivity. It is a reddish-orange metal that occurs naturally in the environment and is found in many different minerals. Copper has been used by humans since ancient times, and was the first metal to be used by humans. It is considered a base metal, meaning that it is not especially rare or valuable. Copper is often used in many different areas, such as electrical wiring, plumbing, and cooking utensils. It is also used in construction and manufacturing, and is a key component in many alloys. Copper is highly corrosion resistant, making it an ideal material for many different uses. Copper is also believed to have some health benefits, as it is an essential trace mineral and can be found in many foods and supplements. Copper is an important part of a healthy diet and is essential for life.

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The force that always opposes the motion of an object is called friction. Friction is the force that resists the motion of two surfaces that are in contact with each other.

Force is an external influence that can cause an object to accelerate, decelerate, change direction, maintain its current state, or experience a combination of these effects. Forces can be either contact forces, such as friction, normal force, and applied force, or non-contact forces, such as gravity, magnetic force, and electrical force. The magnitude of a force is measured in terms of its strength, while the direction of a force is measured in terms of its direction. Force is an integral part of physics and is used to explain and predict a wide range of physical events. Force is a fundamental concept for understanding how the physical universe works.

It is caused by the interaction of the two surfaces as they interact with each other. Friction can be static, which is the force that resists the motion of two surfaces that are in contact with each other but not moving, or kinetic, which is the force that resists the motion of two surfaces that are in contact with each other and moving.

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Answer:

2 cm.

Explanation:

Please see attached photo for diagram.

In the attached photo, y is the distance from the pivot to which the 25 g is placed.

The value of y can be obtained as follow:

Clockwise moment = 5 × 10

Anticlock wise moment = y × 25

Anticlock wise moment = Clockwise moment

y × 25 = 5 × 10

y × 25 = 50

Divide both side by 25

y = 50/25

y = 2 cm

Thus, the distance is 2 cm

Electric potential is the amount of electric potential energy per unit charge at a particular point in an electric field.

It is a scalar quantity measured in volts (V). To find the value of charge (q) given the electric potential, we can use the equation:

Electric Potential = Electric Potential Energy / Charge

Rearranging the equation, we have:

Electric Potential Energy = Electric Potential * Charge

The electric potential energy is the work done to bring a charge from infinity to a specific point in the electric field. By knowing the electric potential and rearranging the equation, we can determine the value of the charge (q).

For example, if the electric potential is 10 volts and the electric potential energy is 50 joules, we can substitute these values into the equation:

50 joules = 10 volts * Charge

By rearranging the equation and solving for Charge, we find that the value of the charge (q) is 5 coulombs.

It is important to note that the electric potential is a property of the electric field, while the charge is a property of the particle experiencing the electric field.

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Each is a zone of decreasing water vapor content within the atmosphere. ... Each is an interface between two layers of the atmosphere. Each is a point of maximum temperature in its layer of the atmosphere.

The Rf value is the ratio of the distance a pigment or a molecule travels from the starting point to the distance the solvent front travels.

In order to determine the Rf value for the xanthophyll pigment in cm if the solvent traveled 1.8 cm, we need to have the distance the pigment traveled from the starting point.

The formula for calculating the Rf value is:

Rf = distance traveled by pigment / distance traveled by solvent front

In this case, since we know the distance the solvent traveled, we need to measure the distance traveled by the pigment from the starting point. After that, we can use the formula to calculate the Rf value. Once we know the Rf value, we can interpret the results and identify the pigment.

Let's say that the xanthophyll pigment traveled 0.5 cm from the starting point. Using the formula above, we can calculate the Rf value as follows:

Rf = 0.5 cm / 1.8 cmRf = 0.28

Therefore, the Rf value for the xanthophyll pigment in cm is 0.28.

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Answer:

\frac{2+\sqrt{3}}{2}

Explanation:

so we simplify tthe denominator first

\((1-\sqrt{3})^2=\)\(4-2\sqrt{3}\)

so the new fraction is:\(\frac{1}{4-2\sqrt{3}}\)

We'll ratinalize the fraction to get: \(\frac{2+\sqrt{3}}{2}\)

Answer:

20m/s2.isjsjsjjsjsisisiww

Explanation:

the no of proton of an element is found in the inner part of the orbital of an element along with the neutron ,also knowing that this two add up to give mass no an element

where neutron+proton=mass no=nucleon no,where proton= electron, unless it carries charges call ion

Answer:

. ... Because ultrasound sound waves have a difficult time traveling through the air, ultrasound gel is used to reduce the air between your patient and the transducer to reduce acoustic impedance and reflection to allow for a clear image to be produced

The characteristics and types of mixture we can see that for the mixture of water and earth the correct answer is:

      B) The water and dirt combined to form a heterogeneous mixture.

A solution is a mixture at the homogeneous molecular level, where it is not possible to differentiate the solute from the solvent.

A mixture is a combination of two or more substances without chemical reaction between them, in general the elements can be separated by physical means, for example filtering, distillation.

Mixtures can be divided into:

In the case presented by shaking the two elements, water and earth, a mixture is formed that separates in time, due to the density of the elements of the earth, the densest part is deposited in the shell of the glass and the less eensa forta in the upper part of the glass. As there are two phases, one solid and the other liquid, the mixture is of a heterogeneous type.

We analyze the different alternatives

A) False. This would be a solution and it cannot be separated in time

B) True. Two phases are observed that change over time.

C) False. The water in the upper part is a bit cloudy from some small fraction of dissolved compounds, but can be separated by means of filtration.

D) False. The insoluble earth is deposited in time in the lower part if it is denser than water, but in the deposited part there is no separation of the chemical compounds of the earth.

In conclusion with the characteristics of the mixture we can find that the correct answer is:

      B) The water and dirt combined to form a heterogeneous mixture.

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Answer:  NOx and VOC combine chemically with oxygen to form ozone

Explanation:

critical election includes any election that signals a significant large-scale change in the popular allegiance of voters from one party to another.

Since the 17th century, elections have been the primary method used to carry out representative democracy in modern times. Elections may be held to fill positions in the legislative, executive, judicial, and occasionally regional and municipal branches of government. Numerous other private and commercial organizations, including clubs, non-profit organizations, and corporations, also use this procedure.

The practice in the democratic archetype, ancient Athens, where elections were regarded as an oligarchic institution and most political offices were filled using sortition, also known as allotment, in which officeholders were chosen by lot, contrasts with the use of elections as a tool for choosing representatives in modern representative democracies.

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Answer:

El módulo del torque aplicado es 36 Nm

Explanation:

En los movimientos rotatorios, la cantidad de fuerza aplicada no depende de la acción gravitacional sino del momento inercial, que es el equivalente angular de la inercia (masa) y representa la resistencia que un objeto ofrece al rotar alrededor de su eje. Cuando un cuerpo rígido rota alrededor de su eje debe considerarse , además de la masa, el radio de giro ya que estos dos factores determinan la resistencia del cuerpo a los cambios de movimiento rotatorio a través de un eje determinado.

De esta manera, se llama torque o momento de una fuerza a la capacidad de dicha fuerza para producir un giro o rotación alrededor de un punto.

En muchas ocasiones el punto de aplicación de la fuerza no coincide con el punto de aplicación en el cuerpo. En este caso la fuerza actúa sobre el objeto y su estructura a cierta distancia, mediante un  elemento que traslada esa acción de esta fuerza hasta el objeto. Entonces, el momento de una fuerza  es, matemáticamente,  igual al producto de la intensidad de la fuerza (módulo) por la distancia desde el punto de aplicación de la fuerza hasta el eje de giro:

M=F*d*sen θ

donde F es la fuerza en Newton (N), d la distancia en metros (m), θ el ángulo que forma la fuerza con el objeto al cual se le aplica la fuerza y M el momento, que se mide en Newton por metro (Nm).

En este caso:

Reemplazando:

M=40 N*0.9 m* 1

Resolviendo:

M= 36 Nm

El módulo del torque aplicado es 36 Nm

The statement that is not true is option D, which states that the horizontally-released ball has a greater speed than the other ball for the whole trip.

In fact, both baseballs have the same vertical acceleration due to gravity, and therefore they both have the same vertical component of velocity as they reach impact, which is determined solely by the height from which they were dropped.

While in the air, the horizontal component of velocity of the horizontally-released ball remains constant, as there is no force acting on it in the horizontal direction. On the other hand, the horizontal component of velocity of the dropped ball increases at the same rate as the vertical component of velocity, due to the acceleration of gravity.

Both baseballs hit the ground at the same time because they have the same vertical acceleration and started falling from the same height.

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Answer:

hB djJS E DIS SIS. AHA. SDI DVZ SIS.Zsjsnw

Answer:

Option D.

Explanation:

Data:

Use formula:

Replace:

Multiply gravity with height:

Multiply:

Solve the square root:

How fast is the ball going?

The speed is going at a speed of 13.3 meters per second.

The mass of Sylvanite that you would need to dig up approximately 264.29 grams of sylvanite to obtain 74.0 grams of gold.

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.

To determine the amount of sylvanite needed to obtain 74.0 g of gold, we can use the fact that sylvanite contains 28.0% gold by mass.

Let's assume the mass of sylvanite required is represented by "m" (in grams).

The mass of gold in the sylvanite can be calculated as:

Gold mass = 28.0% of m = (28.0/100) * m = 0.28m

According to the problem, the gold mass required is 74.0 g. We can set up the following equation:

0.28m = 74.0

To solve for "m", we divide both sides of the equation by 0.28:

m = 74.0 / 0.28 ≈ 264.29

Therefore, to get 74.0 grammes of gold, you would have to dig out about 264.29 grammes of sylvanite.

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Answer:

60 meters per second

Explanation:

600/10=60

Answer:4s^-1

Explanation:Tangential Acceleration=v^2/r=(20)²/100=400/100

Answer: 13.9264J

Explanation: the formula for kinetic energy is ½ mv² so, we need to add our figures to the formula: ½ (17×1.28²) = 13.9264 J.

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.

Maximum error in the result of the sum of measurement is equal to the sum absolute error of the individual observed measurements

(a) The maximum error in D is 0.09

(b) The standard error in D is approximately 0.034

The procedure for arriving at the above values is as follows;

The given measurements and the sited errors are;

A = 15.21 + 0.01

B = 10.82 + 0.05

C = 11.00 + 0.03

D = A + B + C

(a) Required parameter;

To calculate the maximum error in D

The equation for the propagation of error in addition is presented as follows;

Given that we have;

x = a + b

Therefore;

x + ±Δx = (a ± Δa) + (b ± Δb) = a + b ± (Δa + Δb)

∴ Δx = Δa + Δb

From the above formula, we have;

Where;

D = A + B + C

The maximum error in D = The sum of the maximum error in A, B, C

∴ The maximum error in D = 0.01 + 0.05 + 0.03 = 0.09

(b) Required parameter:

To find the standard error in D

The standard error is the sampling distribution's standard deviation, SD

Variance = SD²

The combined variance, SD² = The sum of the squares of individual standard deviations

Given that the standard errors represents the standard deviation, we get;

The combined variance, SD² = 0.01² + 0.05² + 0.03²

The combined variance, SD = √(0.01² + 0.05² + 0.03²) = 0.059

\(Standard \ error = \dfrac{SD}{\sqrt{n} }\)

Where n = 3, for the three measurement, we get;

\(Standard \ error = \dfrac{\sqrt{0.01^2 + 0.05^2 + 0.03^2} }{\sqrt{3} } \approx 0.034\)

The standard error in D is approximately 0.034

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Answer:

k.E= 49 ms^-2

Explanation:

k.E= 1/2 mv^2

From that formula of k.E

K.E is directly proportional to the ( velocity)^2

K.E directly proportional to (7)^2

so that k.E increase by 49

Torque:-

\(\\ \rm\Rrightarrow \tau =14(0.018)\)

\(\\ \rm\Rrightarrow \tau=0.25Nm\)

option B

The element is likely to be in the p-block of the periodic table, since elements in this block typically have a low first ionization energy and high subsequent ionization energies. The element with these ionization energies is Nitrogen (N), which has the electron configuration 1s2 2s2 2p3.

The ionization energy of an element is the energy required to remove an electron from a neutral atom of that element. The given ionization energies are:- ie1: 0.8, ie2: 2.43, ie3: 3.66.ie4: 25.02,ie5: 32.82.

To find the element with these ionization energies, we can use the periodic table and look for elements with similar ionization energy values.

In general, as we move across a period from left to right, the ionization energy of the elements increases due to the increasing nuclear charge.

Similarly, as we move down a group, the ionization energy of the elements decreases due to the increasing distance of the outermost electrons from the nucleus.

Based on the given ionization energies, we can identify the element as follows:

- The first ionization energy (ie1) is relatively low, suggesting that the outermost electron is not strongly bound to the nucleus.

- The second ionization energy (ie2) is significantly higher than the first, indicating that the removal of a second electron requires much more energy.

- The third ionization energy (ie3) is higher than the second, suggesting that the second electron was removed from a more stable configuration.

- The fourth ionization energy (ie4) is much higher than the third, indicating that the third electron was removed from a very stable configuration.

- The fifth ionization energy (ie5) is higher than the fourth, suggesting that the removal of a fifth electron requires even more energy.

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If I hold a positive charge in my hand and there are positive charges of equal magnitude 1 mm to your north and 1 mm to your east then the direction of the force on the charge I am holding is towards the north-east direction.

Reasoning:

It is given that there is a positive charge in my hand. There are two more positive charges with the same magnitude. One is 1 mm far towards the east, and the other one is 1 mm far towards the north. It is required to find the direction of the force acting on the charge in my hand.

Let the magnitude of the charge in my hand is Q, and the magnitude of the other charges is q.

Thus the electric force applied on the charge in my hand due to each other is,

\(F=\frac{kQq}{r^2}\)

Here k is the Coulomb constant, and r is the distance between the charges.

It is also known that the force on a positive charge due to another positive charge is acted outwards.

Thus, the force on the charge due to the charge on the east is,

\(\vec{F_1}=\frac{kQq}{( 10^{-3}\text{ m})^2}\hat{i}\)

And the force on the charge due to the charge on the north is,

\(\vec{F_2}=\frac{kQq}{( 10^{-3}\text{ m})^2}\hat{j}\)

As the forces are equal in magnitude and one is perpendicular to the other, thus the net force will be acted at an angle of \(45^\circ\) from the north or from the north direction.

Thus the net force is acting in the north-east direction.

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Answer:

I think it's D

Explanation:

I don't know I just think

Answer:

15 meters

Explanation:

Displacement is a vector quantity that describes the change in position of an object. In this case, the displacement is the change in position of an object that has moved 9 meters north and 12 meters west.

To find the displacement, you need to find the resulting change in position of the object. This can be done by drawing a vector diagram and finding the vector that represents the net change in position.

To do this, you can draw a coordinate grid and mark the starting position of the object at the origin (0,0). Then, draw a vector that points 9 meters north and another vector that points 12 meters west. The displacement vector is the vector that connects the starting position to the final position, which is the sum of the two movement vectors.

In this case, the displacement vector would point in a direction that is slightly northwest of due west. Its length could be calculated using the Pythagorean theorem:

displacement = squaeroot((9^2) + (12^2))

displacement = 15 meters

So, the displacement of the object that moves 9 meters north and 12 meters west is 15 meters.

Rate the effectiveness of four different shears on a scale of 1 to 10 for each category. Reber thinks that the shear should be bought.

Flexibility is the term used to describe a joint's or a collection of joints and muscles' ability to move through a range of motion efficiently painlessly.

Flexibility is the capacity to swiftly and collectedly adapt to brief change, enabling you to successfully handle unforeseen issues or duties. Here are some instances of what you could do: Offer to help another team member if you see them to be overworked.

Flexibility in the workplace refers to the capacity to quickly adjust to novel situations as they emerge. A flexible worker can alter their plans to deal with or get around unexpected challenges.

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