how is the second law demonstrated in the experiment when we use a single fixed mass? group of answer choices the experiment demonstrates the acceleration as being proportional to the force. the experiment shows that that the net force is the sum of forces acting on the object. the experiment shows that the motion of the object stops when the force stops. the experiment shows that the application of force causes the object to acquire a constant speed. that the net force applied is zero. the experiment shows that when a constant force is applied the acceleration increases continuously. the experiment shows that when a force is applied the mass changes inversely with it.

Answers

Answer 1

Experiment demonstrates second law of motion, where acceleration is directly proportional to force and inversely proportional to object's mass.

The second law of motion states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. In an experiment where a single fixed mass is used, the second law is demonstrated by the acceleration being proportional to the force applied to the object. As the force acting on the object is increased, the acceleration also increases proportionally. This is because the mass remains constant and the force acting on the object is the net force, which is the sum of all the forces acting on it.

Furthermore, the experiment also shows that the motion of the object stops when the force acting on it stops, and the application of a constant force causes the object to acquire a constant speed. This is because, according to the second law, the object will continue to move with a constant velocity when there is no net force acting on it.

Therefore, the experiment with a single fixed mass is an excellent way to demonstrate the second law of motion, which states that the acceleration is directly proportional to the force applied and inversely proportional to the mass of the object.

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Related Questions

The electric force is much stronger than the gravitational force, and yet the gravitational force is the dominant force that we notice in our everyday interactions and at a planetary or larger scales. why?

Answers

The electric force between these electrons is 2.40 x 1043 times bigger than the gravitational force

Why electric force is stronger than gravitational force?

However gravitational force moves on mass while the electric force acts on charge. Gravitational forces are only captivating while electric fields can be attractive/repulsive. The electric field is much stronger than the gravitational field.

Electrostatic forces are much stronger than gravitational forces. This is because gravity depends on mass, atoms have tiny masses so the gravitational forces joining them are close to zero. Whereas, the electrostatic force connected to charges is bigger.

So we can conclude that The gravitational force is extremely weak compared to the electric force.

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The reason that the gravitational force is more noticeable in our everyday interactions and at planetary or larger scales is because it is an attractive force that acts between all masses, and its strength decreases much more slowly with distance than the electric force.

What is the interaction of electric force and gravitational force?

The electric force and the gravitational force are indeed very different in their strength. The electric force between two charges is proportional to the product of their charges and inversely proportional to the square of the distance between them, whereas the gravitational force between two masses is proportional to the product of their masses and inversely proportional to the square of the distance between them. This means that for a given distance, the electric force between two charges can be many orders of magnitude stronger than the gravitational force between two masses.

However, the reason that we notice the gravitational force more in our everyday interactions and at planetary or larger scales is because it is an attractive force that acts between all masses, not just between two charged objects. This means that the gravitational force is felt by everything with mass, and it is always attractive, which means that it pulls objects toward each other. On the other hand, electric forces can be both attractive and repulsive, depending on the sign of the charges, and they are only felt by charged objects.

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which of the following is not a characteristic of the outer planets? group of answer choices they all have rings. their orbits are separated by relatively large distances. they have very few, if any, satellites. they are all large balls of gas. they are primarily made of hydrogen and helium.

Answers

The correct answer is they are all large balls of gas. The outer planets also have rings, their orbits are separated by relatively large distances, and they have numerous satellites.

The outer planets are not all large balls of gas. Instead, the outer planets are composed mostly of gas and ice, with the four giant planets being composed mostly of hydrogen and helium. The outer planets are composed of a variety of materials, including rocks and ice, and are not all large balls of gas.  They are mostly composed of a large, rocky core surrounded by a thick atmosphere of gas. Unlike the inner planets, which are solid, the outer planets are mostly composed of gas and lack a solid surface. These gas giants are much larger than the inner planets, with enormous gravitational fields and strong magnetic fields. They also have numerous satellites and rings of dust, ice, and rock orbiting them.

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a brick slides across a horizontal rough surface and eventually comes to a stop. what happened to the kinetic energy of the brick?

Answers

The correct option is A,  the kinetic energy of the brick it was converted to other energy forms, mostly heat.

Kinetic energy is the strength possessed with the aid of a moving object because of its motion. Any object that is in motion has kinetic energy, regardless of its size or shape. The amount of kinetic energy an object has depends on its mass and velocity, and is given by the formula KE = 1/2 mv^2, where KE is the kinetic energy, m is the mass of the object, and v is its velocity.

Kinetic energy can be converted into other forms of energy, such as thermal energy, as a result of collisions or other interactions. It is an important concept in physics and plays a crucial role in understanding the behavior of objects in motion. The quicker an item actions, the more kinetic energy it has.

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Complete Question: -

A brick slides across a horizontal rough surface and eventually comes to a stop. What happened to the kinetic energy of the brick?

a)It was converted to other energy forms, mostly heat.

b)It was converted to a potential energy of friction.

c)It was simply destroyed in the process of stopping.

d)Nothing, it is still in the brick but is now called potential energy.

a cube has a side of 5 cm. it has a mass of 250 grams. the density of the cube is a. 50 g/cm3 and will float in water b. 2.0 g/cm3 and will float in water c. 50 g/cm3 and will sink in water d. 2.0 g/cm3 and will sink in water

Answers

To determine: A cube's density and its ability to float on water. Explanation: Side: 5 cm. Volume is equal to (side)3 = 53 = 125 cm3. Cube weight is 250 g. Cube density = mass / volume = -250

What in physics is volume?

Describe volume. Describe volume. Each thing in three dimensions takes up some space. The volume of this area is what is being measured. The space filled within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity.

What distinguishes the terms volume and capacity?

Volume is sometimes referred to as capacity. For instance, a cylindrical jar's volume can be used to calculate how much water it can hold. Check the cylinder's volume here. The area that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere.

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7) A plane that can fly at 250 km/h wishes to reach an airport that has a bearing of 25° W of N from its present
location. If there is a 50.0 km/h wind blowing directly to the west what should be the heading of the plane.
What will be its ground speed? How long would it take to get to the airport if it were 560 km away?

Answers

(a) The ground speed of of the plane is 250 km/h.

(b) The time taken to get to the airport is  2.24 hours.

What is the ground speed of the plane?

The ground speed of the plane will be the vector sum of its airspeed and the wind speed. The magnitude of the ground speed will be given by:

ground speed = √(air speed^2 + wind speed^2 - 2 x air speed x wind speed x cos(θ))

where;

θ is the angle between the plane's heading and the direction of the wind.

To find the angle that the plane should fly at, we can set this expression equal to the desired ground speed and solve for θ.

Assuming the wind speed is constant, the desired ground speed is 250 km/h, and the air speed is 250 km/h, we can solve for θ:

θ = arc cos((air speed^2 + wind speed^2 - ground speed^2) / (2  x air speed x  wind speed))

θ = arc cos((250^2 + 50^2 - 250^2) / (2 x 250  x 50))

θ = arccos(50 / 500)

θ = 66.43°

So the plane should fly at a heading of 25° + 90° - 66.43° = 48.57° west of north to counteract the effect of the wind and maintain its desired ground speed of 250 km/h.

The ground speed of the plane will be the same as its airspeed, 250 km/h, since the wind is blowing directly to the west and not affecting the magnitude of the ground speed.

Finally, the time it will take for the plane to reach the airport if it is 560 km away can be found using the formula:

time = distance / ground speed

time = 560 km / 250 km/h

time = 2.24 hours.

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why are x-rays used for crystallography? why not use some other, more accessible type of electromagnetic radiation such as ultraviolet light?

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X-rays are used for crystallography because they have a much smaller wavelength than visible light or UV light, making them capable of diffracting off the regular array of atoms within a crystal lattice.

The regularity of the crystal lattice causes the X-rays to undergo constructive interference, creating a diffraction pattern that can be used to determine the structure of the crystal. X-rays are also highly energetic, allowing them to penetrate the surface of the crystal and interact with the atoms in the interior. While other types of electromagnetic radiation could be used, their longer wavelengths and lower energy levels would not be able to penetrate the surface of the crystal or diffract off the atoms in the lattice, making them less effective for crystallography. X-rays are used for crystallography because they have a much smaller wavelength than visible light or UV light, making them capable of diffracting off the regular array of atoms within a crystal lattice.

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A 1000 kg car rests on four tires, each inflated to 2.2 bar. What surface area does each tire have in contact with the ground? (Assume the weight is evenly distributed on each wheel.)

Answers

The surface area each tire have in contact with the ground is 0.11 m².

What is the Surface area of each tire?

The weight of the car is evenly distributed on each wheel, so each wheel supports a force of 1000 kg / 4 = 250 kg.

The force on the tire is transmitted to the ground through the tire's contact patch, which is the surface area of the tire in contact with the ground.

The tire's contact patch can be calculated by dividing the total force on the tire by the pressure of the tire:

Contact patch area = Force on tire / Pressure

= 250 kg  x 9.8 N/kg / (2.2 bar  x 10⁵ Pa/bar)

= 0.11 m²

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d.if a third type of charge existed, how would it affect the two oppositely charged strips in this activity?

Answers

Because it would attempt to draw in all the sides at once, it would probably spiral out of control.

Electrostatics is the study of electric charges in a stationary state (static electricity). Certain materials, like amber, have been known to collect light particles after rubbing since antiquity. The Greek word for amber, v, was used to create the English word "electricity". Electrostatic phenomena are caused by the interactions between electric charges. Such forces are described by Coulomb's law.

Although certain a electrostatic forces are relatively powerful, electrostatically generated forces often appear to small. The gravitational force between two objects is about 36 orders of magnitude weaker than the force between an electron and a to proton, which make up a hydrogen atom.

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A soccer player is running at 6 m/s. He then stumbles over an opponent's foot falling and rolling to a stop. This took 4 seconds. What was his acceleration?

Answers

Answer:1.5m/s^2

Explanation:6/5=1.5m/s^2

as you increase magnification what happens to the depth of field

Answers

Answer:

As you increase the magnification of an image, the depth of field decreases. This means that a greater portion of the image will be out of focus. A shallow depth of field is often used to isolate the subject from the background, while a deeper depth of field is used to keep more of the image in focus.

As you increase magnification, happens to the depth of field is decreases.

Magnification is the enlargement of the image on the radiograph compared to the size of the actual object. When zoomed in to the depth of field, the area that appears to be in focus becomes smaller and the background and foreground become more blurred. This is because as magnification increases, the focal length of the lens decreases, leading to a smaller depth of field. In order to maintain a larger depth of field while increasing magnification, you would need to increase the aperture of the lens.

In summary, as magnification increases, depth of field decreases. This is due to the relationship between magnification, focal length, and aperture. By increasing the aperture, you can maintain a larger depth of field while increasing magnification.

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how much energy is expended, in joules, if a voltage of 13 v moves 1.25 c of charge between two points? round the final answer to one decimal place.

Answers

The amount of energy expended, in joules, will be 16.25 J. If the answer is rounded to one decimal place then it will be 16.3 J.

When a charge is moved between two points that have a potential difference, or voltage, across them, work is done by the electric field.

Here energy is transferred as work from one point to the other. The amount of energy transferred, in joules, is the product of the voltage and charge moved.

[tex]Energy = Voltage[/tex] × [tex]Charge[/tex]

We are given that voltage is 13 V and the charge moved is 1.25 C.

Therefore, Energy = 13 V x 1.25 C

Energy = 16.25 J

Therefore, the amount of energy expended is 16.3 J.

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the emission spectrum of each element is unique. astronomers studying the stars collect information about their brightness and the spectrum of light produced by them. these distant stars are too far away to sample physically and yet astronomers are certain that they are made of the same elements as we find here on earth. how can they be so sure?

Answers

Each element's spectra are distinct because each element has a different amount of electrons and hence various energy levels.

Astronomers can identify not only the element, but also the temperature and density of that element in the star, using spectral lines. The spectral line can also inform us about the star's magnetic field. The line's width can tell us how rapidly the material is travelling. This teaches us about the winds in the stars. Because the emission spectrum differs for each element of the periodic table, it may be used to establish the composition of a substance. One example is astronomical spectroscopy, which involves analyzing received light to determine the composition of stars. Since various elements contain varying quantities of protons and varied numbers and configurations of electrons, their spectra differ. Differences in spectra indicate variances in the amount of energy absorbed or released by atoms when their electrons travel between energy levels.

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three motions are listed: an object changes direction an object changes mass an object changes position which of the three is considered acceleration? a only b only a and c b and c

Answers

Acceleration is a measure of how quickly an object changes its velocity, and is given by the rate of change of its velocity over time.

Of the three motions listed, changing direction and changing position are considered acceleration. This is because changing direction involves a change in velocity, even if the speed remains constant. Similarly, changing position involves a change in velocity, as the object is accelerating in a particular direction. On the other hand, changing mass is not considered acceleration because it does not affect the object's velocity. While it may affect other properties of the object's motion, such as its momentum or kinetic energy, it does not result in a change in velocity, and therefore is not considered acceleration. Acceleration is a measure of how quickly an object changes its velocity, and is given by the rate of change of its velocity over time.

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Answer:

A and B

Explanation:

I took the exam

the minimum speed required to launch an object so that it remains the same distance above the ground and just falls around the earth is called:

Answers

The minimal speed necessary for an object to maintain a circular orbit around the Earth is known as the circular orbital velocity. Hence, it just circles the planet while staying at the same height above it.

The "circular orbital velocity" is the smallest speed needed to launch an object so that it stays at the same height above the ground and simply orbits the Earth. This velocity is the speed at which an object needs to move in order to stay in a circular orbit around the Earth, such that the gravitational force of the Earth is balanced by the centripetal force required to keep the object in its circular path.

To understand this concept, consider a satellite in orbit around the Earth. The gravitational force between the satellite and the Earth pulls the satellite towards the Earth's surface. However, the satellite is also moving forward with a certain velocity, which generates a centripetal force that pulls it away from the Earth. The balance between these two forces results in a circular orbit. The speed required for this balance to occur is dependent on the altitude of the orbit. The further the object is from the Earth's surface, the lower the required speed. However, if the object is too close to the Earth's surface, the required speed becomes very high, and the object will experience atmospheric drag that could cause it to slow down and fall back to Earth. The exact circular orbital velocity at any given altitude can be calculated using the following formula:

[tex]v = \sqrt{(GM/r)}[/tex]

In summary, the circular orbital velocity is the minimum speed required for an object to stay in a circular orbit around the Earth, where the gravitational force of the Earth is balanced by the centripetal force required to keep the object in its circular path.

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When a surface is experiencing friction with another surface, how are the particles affected? Address both movement and spacing in your answer.

Answers

When two surfaces experience friction with each other, the particles on the surfaces are affected in two ways: movement and spacing. The particles on the surfaces move against each other, creating a force that resists the motion of the two surfaces. This force is known as friction. At the same time, the particles on the surfaces are also pushed apart, creating a small gap between the two surfaces. This gap is known as the coefficient of friction, and it affects the amount of friction that is experienced between the two surfaces.

Particles are affected by the friction in between the movement, this causes what we know as friction

A student with a mass of 75.0 kg is sitting on 4-legged lab stool that has a mass of 3.0 kg. Each leg of the stool is circular and has a diameter of 2.50 cm. Find the pressure under each leg of the stool. (Hints: (1) Remember to convert cm² to m² for the area of the legs of the stool. (2) Remember that the stool has four legs. (3) Note that the problem gives the diameter of the legs of the stool, not the radius.)

Answers

Answer:

1171,875 N/m^2.

Explanation:

First, we need to calculate the area of each leg of the stool. We can do this by finding the radius of the leg and then using the formula for the area of a circle:

Area = pi * radius^2

Diameter = 2.5 cm = 0.025 m

Radius = Diameter / 2 = 0.025 / 2 = 0.0125 m

Area = pi * 0.0125^2 = 0.00016 m^2

Next, we can find the total force being applied to each leg of the stool by the student by using the formula for weight:

Weight = mass * gravity = 75 kg * 10 m/s^2 = 750 N

Since there are 4 legs, each leg has to support 750 N / 4 = 187.5 N

Finally, we can find the pressure under each leg of the stool using the formula:

Pressure = Force / Area = 187.5 N / 0.00016 m^2 = 1171,875 Pa = 1171,875 N/m^2

So, the pressure under each leg of the stool is 1171,875 N/m^2.

Abed drove his car starting from point A to reach point B then complete its path to reach the finish at point C as shown in the adjacent figure. Given: • The distance between A and B is AB=120Km. • The average speed of the car between A and B is 60 km/h. • The distance between B and C is BC=150 km. • The average speed of the car between B and C is 50 km/h.Show that the value |∆x| of the displacement of the car is approximately 192Km​

Answers

The value of the displacement of the car is approximately 270 km, which is not equal to 192 km.

What is the displacement of the car?

To calculate the displacement of the car, we need to find the total distance traveled by the car and subtract the initial position. In this case, the initial position is point A, so the displacement is the distance from point A to point C.

The distance traveled between A and B can be calculated using the average speed and the time taken to travel this distance:

d = v * t

t = d / v

where:

d is the distancev is the average speedt is the time

Substituting the values, we get:

d = 120 km

v = 60 km/h = 60 / 3.6 m/s = 16.67 m/s

t = d / v

t = 120 / 16.67

t = 7.2 hours

The distance traveled between B and C can be calculated in the same way:

d = 150 km

v = 50 km/h = 50 / 3.6 m/s = 13.89 m/s

t = d / v

t = 150 / 13.89

t = 10.79 hours

The total distance traveled by the car is:

d = d1 + d2

d = 120 + 150

d = 270 km

The displacement is equal to the distance from point A to point C, which is equal to the total distance traveled by the car:

|∆x| = d

|∆x| = 270 km

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in order to pass the conductor up through the double-locking grip head, the cam's locking ring around the head needs to be in the ? position.

Answers

Unlocked position. The cam is used to lock the conductor in place, so the locking ring needs to be in the unlocked position in order for the conductor to be passed through the grip head.

What is conductor ?

A conductor is a person or object that allows the flow of electric current or heat. In electrical systems, a conductor provides a path for the electric current to flow from the power source to the device being powered. In heating systems, a conductor carries the heat from the source to the device or area that needs to be heated. Conductors are typically made of metal, such as copper, aluminum, and silver, as these materials have a higher electrical conductivity than most other materials.

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in a ________ fault, the hanging wall block moves up with respect to the footwall block.
.A) normal B) strike slip C) reverse D) abnormal

Answers

In a Reverse fault, the hanging wall block moves up with respect to the footwall block.

What is Reverse fault?

Reverse fault is a type of fault in which two blocks of earth's crust move away from each other, resulting in the upper block of crust being pushed up above the lower block. It is the opposite of a normal fault, in which two blocks of crust move towards each other. The reverse fault typically occurs when the Earth’s tectonic plates come together and a compressional force pushes up and over the lower plate. This type of fault is usually seen in regions of convergence between two plates and is common along convergent plate boundaries. The reverse fault is usually accompanied by large earthquakes as the plates move against each other. The reverse fault can also be caused by the bending of the Earth’s crust in response to forces such as erosion, volcanic activity and sedimentation. These forces can cause the crust to buckle and rise, resulting in a reverse fault.

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a toy cannon is in a large room with ceiling at a height 8 m. the cannon fires a ball at a speed of 28 m/s. what is the maximum range of the ball if it must not hit the ceiling during its flight.

Answers

The ball can go a maximum distance of 39.2 meters as long as it doesn't collide with the ceiling while having a speed of 28m/s.

To find the maximum range of the ball fired from the toy cannon, we can use the equations of motion for a projectile. The maximum range occurs when the projectile lands at the same height from which it was fired. In this case, the ball must not hit the ceiling during its flight, so we need to ensure that the maximum height it reaches is less than the ceiling height.

The time of flight of the projectile can be calculated using the vertical component of the initial velocity and the acceleration due to gravity. Since the initial speed of the projectile is 28 m/s and the angle of elevation is not given, we can assume that the projectile is fired at an angle of 45° with the horizontal, which gives equal vertical and horizontal components of velocity. The vertical component of the initial velocity is therefore:

[tex]v_0_y = v_0 sin45 = 28/\sqrt{2 m/s}[/tex]

The acceleration due to gravity is[tex]-9.8 m/s^2[/tex]

[tex]h = v_0_y * t + (1/2) * g * t^2[/tex]

here,

h is  maximum height reached by the projectile.

At the maximum height, the vertical component of the velocity becomes zero:-

[tex]0 = v_0_y * t + (1/2) * g * t^2[/tex]

[tex]t = (v_0_y / g)[/tex]

Reserving given:-

[tex]t = (28/\sqrt{2 m/s)} / 9.8 m/s^2[/tex]

t = 2.02 s (approx.)

The horizontal range of the projectile can be calculated using the horizontal component of the initial velocity and the time of flight of the projectile.

[tex]v_0_x = v_0 cos45 = 28/\sqrt{2 m/s}[/tex]

The horizontal range:-

[tex]R = v_0_x * t[/tex]

Reserving values:-

[tex]R = (28/\sqrt{2 m/s} ) * 2.02 s[/tex]

R = 39.2 m (approx.)

Therefore, the maximum range of the ball fired from the toy cannon, without hitting the ceiling, is approximately 39.2 meters.

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different substances have different ____________ , or abilities to reflect light.

Answers

Different substances have different reflectivities, or abilities to reflect light.

Reflectivity, also known as reflectance, is a measure of how much light is reflected by a substance compared to how much is absorbed or transmitted. It is a property of a material that depends on its chemical composition, physical structure, and surface properties. For example, a shiny metal surface such as a polished aluminum surface has a high reflectivity, meaning it reflects a large portion of the incident light. This is because metals have a smooth surface and free electrons that can move freely in response to the electromagnetic waves of the incident light, which results in a high reflectivity. On the other hand, a rough or matte surface such as paper has a low reflectivity, meaning it absorbs or scatters most of the incident light. This is because the rough surface causes light to reflect in different directions, and the material has a more complex internal structure that allows for absorption of the incident light. Different substances can also have different colors due to their reflectivity. For example, a red apple appears red because it absorbs most colors of light except for red, which it reflects. Similarly, a blue object appears blue because it reflects mostly blue light and absorbs other colors.

In summary, reflectivity is a property of a material that determines how much light is reflected compared to how much is absorbed or transmitted. Different substances have different reflectivities due to differences in their chemical composition, physical structure, and surface properties.

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3. The timeline below shows the sequence of events leading to the
Constitutional Convention. (H)






March 1781 Sept. 1783 Aug. 1786 Sept.1786 May 1787

Which conclusion can be drawn from the timeline?

A. Americans realized their first national government was not strong enough.
B. Most Americans felt the national government under the Articles of
Confederation was too strong.
C. Shays’ Rebellion had no influence on the decision to strengthen the
national government.
D. The new government was unable to negotiate a peace with Britain.

Answers

The conclusion that can be drawn from the timeline is that Americans realized their first national government was not strong enough.

The timeline shows that from March 1781 to September 1783, the United States was fighting for its independence from Great Britain, and it was during this time that the Articles of Confederation were adopted as the first national government. However, by August 1786, there were clear signs that the Articles of Confederation were not strong enough to meet the needs of the new nation. This led to the calling of the Constitutional Convention in May 1787, where the Constitution of the United States was written to establish a stronger national government that could better serve the needs of the new nation.

Therefore, option A is the correct conclusion that can be drawn from the timeline.

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the ground at the top of the cliff is level, with a constant elevation of 25.0 mabove the cannon. under the conditions of part a, how far does the shell land past the edge of the cliff?

Answers

The shell lands 90.8 meters past the edge of the cliff when fired at 32.6 m/s and 43.0 degrees.

To tackle this issue, we can involve the conditions of movement for shot movement, which depict the movement of an article that is sent off up high and moves affected by gravity.

In the first place, we really want to break the underlying speed of the shell into its flat and vertical parts. The point of 43.0 degrees over the flat implies that the upward part of the speed is given by:

v_y = v * sin(43.0°)

Also, the even part of the speed is given by:

v_x = v * cos(43.0°)

where v is the underlying speed of the shell, which is given as 32.6 m/s in the issue articulation.

Presently, we can involve the condition for the even distance went by a shot:

x = v_x * t

where x is the flat distance went by the shell, and t is the time it takes for the shell to arrive on the ground. We can make the opportunity t by involving the condition for the upward distance went by a shot:

y = v_y * t - 0.5 * g * t^2

where y is the upward distance gone by the shell, g is the speed increase because of gravity (which is roughly 9.81 m/s^2 close to the outer layer of the Earth), and we can set y equivalent to the level of the bluff, 25.0 m.

Addressing for t, we get:

t = (v_y + sqrt(v_y^2 + 2 * g * y))/g

Subbing the qualities we have:

t = (v * sin(43.0°) + sqrt((v * sin(43.0°))^2 + 2 * 9.81 * 25.0))/9.81

t = 3.89 s (adjusted to two decimal spots)

Presently, we can find the even distance went by the shell:

x = v_x * t

x = 32.6 * cos(43.0°) * 3.89

x = 90.8 m (adjusted to two decimal spots)

Accordingly, the shell lands 90.8 meters past the edge of the bluff.

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The complete question is:

A cannon, located 60.0 m from the base of a vertical 25.0 m tall cliff, shoots a 15 kg shell at 43.0 ❝ above the horizontal toward the cliff.

v=32.6 m/s

The ground at the top of the cliff is level, with a constant elevation of 25.0 m above the cannon. Under the conditions of part A, how far does the shell land past the edge of the cliff?

How do you solve questions 3 and 4?

Answers

Answer:

Q3) B Q4) D

Explanation:

I looked at the photo and they were circled. Hope this helps!!

how do lithospheric mantle and asthenosphere differ from each other?

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The lithosphere, which is the mechanical layer's outermost layer and which exhibits stiff, brittle behaviour, The asthenosphere is a solid portion of the upper mantle that is so heated that it can flow and act plastically. The asthenosphere supports the lithosphere.

Why is it called lithosphere?

The crust and the brittle upper mantle make up the lithosphere, the Earth's outermost layer. The Greek terms "lithos," which means stone, and "sphaira," which means globe or ball, are the source of the English word "lithosphere."The crust and uppermost mantle are both parts of the lithosphere, which is the planet's hard, rigid outer layer. The weaker, hotter, and deeper portion of the upper mantle, known as the asthenosphere, lies beneath the lithosphere. A variation in how each lithosphere and asthenosphere responds to stress defines their boundary. The asthenosphere deforms viscously and accommodates strain by plastic deformation, whereas the lithosphere remains hard for very long geologic time periods during which it deforms elastically and through brittle failure.

Thus, it is believed that the lithosphere's thickness corresponds to the distance from the isotherm that marks the change from brittle to viscous behaviour.

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If it takes 2.0h for cathy to walk from her house to her school at a rate of 1.0 m/s how far is her school from her house

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The distance Cathy's school is from her house can be calculated by multiplying the rate (1.0 m/s) by the time (2.0 h) that it takes her to walk there.

What is school?

School is an institution for teaching and learning. It is the place where students come to acquire knowledge, skills and values. It is a place where students learn to interact with peers, and to think critically and independently. School is a place where students form bonds with teachers and develop relationships with their peers. School helps students become well-rounded individuals, with a broad understanding of the world and good qualifications to pursue a chosen career. School also provides students with opportunities to explore their interests and passions, and to develop their talents.

Distance = Rate x Time

Distance = 1.0 m/s x 2.0 h

Distance = 2.0 m

Therefore, Cathy's school is 2.0 m from her house.

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uppose you have two metal cubes, one made of iron and one made of aluminum. You transfer the same amount of heat Q to each of them. Which cube will have the higher final temperature, given they have the same masses and initial temperatures?a. Iron Cubeb. Aluminum Cube

Answers

Answer:

Q = C M ΔT    where C is specific heat in cal / gm*deg C

C (Fe) = .11

C (Al) = .22

obviously ΔT has to be twice as great for Iron (Fe) as for (Al) for the same amount of heat to be transferred

ΔT = Q /(C * M)      where ΔT is the change in temperature

a) iron would have the higher final temperature

how to calculate direction by looking at a diagram?

Answers

Answer:

To calculate the direction of the vector v⃗ = (x, y) , use the formula θ = arctan(y/x) , where θ is the smallest angle the vector forms with the horizontal axis, and x and y are the components of the resultant vector.

What is the pH of a solution containing 11.7 g of NaCl for every 200 mL of solution?
A. 1.0x10
B. 9.0
C. 10
D. 7.0

Answers

The pH of the solution cannot be determined from the information given.

NaCl is a salt and, when dissolved in water, it dissociates into its constituent ions, Na+ and Cl-. Neither of these ions affect the pH of the solution since they are neither acidic nor basic. Therefore, the pH of a solution containing NaCl depends on any other acidic or basic substances that may be present in the solution.

To calculate the pH of a solution, we need to know the concentration of H+ ions in the solution. This information is not provided in the question. Therefore, we cannot calculate the pH of the solution using the given information.

In conclusion, the answer is not A, B, C, or D. The pH of the solution cannot be determined without additional information.

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a particle accelerates uniformly from a speed of 30 cm/s to 40 cm/s in 5 s and thereafter moves at a constant speed of 40 cm/s for an additional 3 s. the average speed over this total time interval is

Answers

The average speed over the entire 8-second time interval is calculated by taking the total distance moved (30 cm + 40 cm = 70 cm) and dividing it by the total time (8 seconds). Average speed = (30 + 40) cm/s / 2 = 35 cm/s

What is Average speed ?

Average speed is the average rate of change of an object's position over time. It is a measure of the distance traveled divided by the time taken to travel that distance. It is measured in units such as miles per hour, kilometers per hour, meters per second, and so on. Average speed is calculated by dividing the total distance traveled by the total time taken. It can be a useful metric for measuring the efficiency of movement, as it takes into account the entire distance and not just the maximum speed.

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