a meteor is falling towards the earth. if the mass and radius of the earth are 6×10^24 kg and 6.4×10^6 m respectively, find the height of the meteor where its acceleration due to gravity is 4m/s^2 ?
​

Answer:

yes  it is write

Explanation:

the planetary boundaries concept is a recent scientific framework that identifies nine bio-physical limits for Earth's systems. By understanding and respecting these boundaries, we can work towards sustainable practices and minimize the risks of irreversible environmental changes.

The planetary boundaries concept is a scientific framework that aims to identify and understand the limits of Earth's bio-physical systems. It provides a way to assess and manage the impact of human activities on the planet. The concept suggests that there are nine key boundaries that, if crossed, could lead to irreversible and abrupt environmental changes.

Here is a step-by-step explanation of the concept:

1. The planetary boundaries concept was introduced by a group of scientists led by Johan Rockström in 2009. It gained recognition and popularity as a framework for understanding the limits of human activities on Earth.

2. The concept identifies nine bio-physical boundaries that are crucial for maintaining the stability of Earth's systems. These boundaries include climate change, biodiversity loss, land use change, freshwater use, ocean acidification, ozone depletion, atmospheric aerosol loading, chemical pollution, and nitrogen and phosphorus cycles.

3. Each boundary represents a critical threshold beyond which human activities can have severe and irreversible impacts on the environment.

4. The concept suggests that by staying within the safe operating space of these boundaries, we can avoid crossing tipping points and maintain a stable and resilient planet.

5. However, it is important to note that the planetary boundaries concept is a framework for understanding and guiding decision-making, rather than a strict set of rules or limits. It provides valuable insights into the interconnectedness of Earth's systems and the potential consequences of exceeding these boundaries.

In conclusion, the planetary boundaries concept is a recent scientific framework that identifies nine bio-physical limits for Earth's systems. By understanding and respecting these boundaries, we can work towards sustainable practices and minimize the risks of irreversible environmental changes.

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(b) There are 9 different possible combinations of quantum numbers for the two 2p electrons in carbon.

(c) There is only 1 different set of quantum numbers possible for the two electrons in carbon, taking into account the Pauli principle.

(b) The quantum numbers that describe an electron in an atom are the principal quantum number (n), azimuthal quantum number (l), magnetic quantum number (ml), and spin quantum number (ms). Ignoring the Pauli principle, each of the two 2p electrons in carbon can have its own set of quantum numbers.

For the 2p sublevel, the azimuthal quantum number (l) can have a value of 1, and the magnetic quantum number (ml) can have values of -1, 0, and 1. The principal quantum number (n) will be the same for both electrons since they are in the same sublevel.

Therefore, for each electron, there are 3 possible combinations of quantum numbers: (n, l, ml). For the two electrons, we can multiply these possibilities together: 3 * 3 = 9.

Thus, ignoring the Pauli principle, there are 9 different possible combinations of quantum numbers for the two 2p electrons in carbon.

(c) The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers. This means that for the two electrons in carbon, each combination of quantum numbers can only be used once.

Since there are 9 different possible combinations of quantum numbers obtained in part (b), applying the Pauli principle eliminates 9 - 1 = 8 of these combinations. This is because one combination will be the same as the other when the order of the electrons is switched.

Therefore, after applying the Pauli principle, only 1 out of the 9 possible combinations remains.

In summary, there is only 1 different set of quantum numbers possible for the two electrons in carbon, taking into account the Pauli principle.

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Answer:

Energy conversion

Explanation:

We regularly use automobile which runs on the chemical energy of the fuels such as diesel and petrol, the chemical energy from the fuel would convert into the thermal energy which is used to drive the engine of the vehicle,further the thermal energy converted into the mechanical energy which is used to drive the prime mover of the automobile.

It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.

We frequently utilize vehicles that operate on chemical energy from fuels like diesel and gasoline.

This chemical energy is transformed into thermal energy, which drives the engine of the vehicle, and then mechanical energy, which drives the prime mover of the vehicle.

Thus, we can say that the transfers and transformations of energy are necessary to operate the technology.

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The gravitational force between the stated bowling balls is around 5.65 × \( {10}^{ - 8} \) N.

The gravitational force will be calculated using the formula -

F = G × \( m_{1}\) × \( m_{2}\)/r², where F is gravitational force, G is gravitational constant, \( m_{1}\) and \( m_{2}\) are the masses and r refers to radius.

The value of G is 6.67 × \( {10}^{ - 11} \) N m²/kg²

The balls are in contact with each other, hence, the radius will be some of radius of both balls.

Radius = 0.11 + 0.11

Radius = 0.22 meters

Keeping the values in formula

F = 6.67 × \( {10}^{ - 11} \) × 6.4 × 6.4/0.22²

Performing multiplication and division on Right Hand Side of the equation

F = 5.65 × \( {10}^{ - 8} \) N

Hence, the gravitational force is 5.65 × \( {10}^{ - 8} \) N.

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Motion parallax is a cue to depth which depends exclusively on object motion. So, the correct option is (a).

When an observer moves laterally, it causes the relative motion of objects at various distances, which gives birth to the monocular depth cue known as motion parallax. Several eye movement systems are active as the observer translates, maintaining attention on a specific object in the scene.

The term "motion parallax" describes how objects that are moving across the frame at a constant speed may appear to move more when they are closer to the observer (or camera) than when they are farther away.

Therefore, motion parallax is a cue to depth which depends exclusively on object motion. So, the correct option is (a).

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Answer: 24.37 m/s/s [forward] = a

Explanation:

First, find mass with the Fgrav formula.

Fgrav=mg

6996=m(9.8)

713.88 kg

Then, plug the answer into Newton's second law formula.

Fnet = ma

1.74e4 = (713.88)a

(1.74e4)/(713.88) = a

24.37 m/s^2 = a

Given,

The work done by the engine, W=23 kJ

The time it takes for the engine to do the given amount of the work, t=1800 s

The power is the time rate of change of transfer of energy or the energy transferred in unit time. Thus the power supplied by the engine can be calculated as the ratio of the work done to the time.

Thus the power supplied by the engine is given by,

On substituting the known values,

Thus the power supplied by the engine is 12.78 W.

√((1/3) * r)  is the minimum speed of  the car can go without slipping , if the  car is to continue safely around the curve.

To calculate the minimum speed at which the car can safely negotiate the unbanked circular turn, you will need to use the equation \(F_{max} = mv^{2} /r\)

where \(F_{max}   is the maximum static frictional force, m is the mass of the car, v is the speed of the car, and r is the radius of the curve.

Since the wet patch reduces the maximum static frictional force to one-third of its dry-road value, you can calculate the minimum speed at which the car can safely turn the corner as follows:

\(F_{max} , wet = (1/3) *\(F_{max} , dry

Substituting in the equation:

(1/3) * mv^{2} /r\) =mv^{2} /r\)

\(v^{2}\) = (1/3) * r

Taking the square root of both sides:

v = √((1/3) * r)

Therefore, the minimum speed the car can go without slipping is √((1/3) * r).

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Answer:

the rate at which an object cools is proportional to the difference in temperature between the object and the object's surroundings.

To state  Newton's Law of cooling we say "According to Newton's law of cooling, the speed at which an item cools is proportional to the temperature differential between the object and its surroundings.".

Generally, According to Newton's law of cooling, the speed at which an item cools is proportional to the temperature differential between the object and its surroundings.

In conclusion, Newton's Law of cooling applies to the temperature interaction of an object and its environment.

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The three advantages and characteristics of hot working relative to cold working are increased strength properties, more significant shape changes are possible, and strain-rate sensitivity is reduced.

Hot working and cold working are two forms of metalworking operations. Hot working is a process in which a metal is shaped and formed at high temperatures, whereas cold working is a process that is performed at room temperature or slightly above it. Here are three advantages and characteristics of hot working compared to cold working: Increased strength properties

More significant shape changes are possible. Strain-rate sensitivity is reduced. Hot working is an advantageous process because it increases the strength properties of the material being worked on. When a material is heated, its ductility increases, allowing it to be shaped into more intricate forms.

This increased ductility also allows for more significant shape changes, making it possible to create complex geometries. Cold working, on the other hand, can lead to brittle behavior and work hardening of the material, making it less ductile.

Therefore, less significant shape changes are possible with cold working.Also, hot working has lower deformation forces required than cold working. This is because when metal is heated, it becomes more malleable and requires less force to shape it.

Additionally, strain-rate sensitivity is reduced during hot working, which means that the material is less sensitive to the rate of deformation applied to it. Hot working also reduces friction, which makes it an ideal process for shaping difficult-to-work materials, such as titanium. Less overall energy is required during hot working because the metal is more malleable, which leads to lower deformation forces and less energy consumption.

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The time taken for the orange to return is 0.96 s.

We know that if an object is thrown up or down that we have to look at the equations of kinematics under gravity so as to be able to obtain the velocity of the object or the time taken.

Now;

v = u - gt

v = final velocity

u = initial velocity

g = acceleration due to gravity

t = time taken.

Thus;

v = 0 m/s at the maximum height so;

u = gt

t = u/g

t = 4.73/9.8 m/s^2

t = 0.48 s

In order to go up and return;

2( 0.48 s) = 0.96 s

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Given

On Saturday, she found 4 times as many shells as she found on Sunday.

Saturday = 4*Sunday

Saturday = 21 + Sunday

Two system equations, now we can solve:

4*Sunday = 21 + Sunday

3*Sunday = 21

Sunday = 7 Shells

Saturday = 28 Shells

Total = 35 Shells

Answer:35 in total

Explanation:

The concave mirror is a spherical-shaped mirror that has an inner curved surface. Hence, option (4) is correct.

What is a concave mirror?

The concave mirrors are spherical-shaped mirrors that are painted on the outward surface. It is also known as the converging mirror, having the recessed inner reflecting surface.

Thus, we can conclude that the surface of the concave mirror is curved inward. Hence, option (4) is correct.

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Answer:

D. It curves inward

Explanation:

After connecting the conducting wire, the spheres will redistribute charges until they both have a charge of -1C.

To determine the new charges on the spheres, we need to consider the principle of charge conservation, which states that the total charge before and after an interaction remains the same.

Let's assume that the spheres have charges Q1 and Q2 initially. In this case, Q1 = -3C and Q2 = +1C.

When a conducting wire is connected between the spheres, charge can redistribute until the system reaches equilibrium. Since the spheres are conducting, charges are free to move within them.

In the final state, the charges on the spheres will redistribute to reach a new equilibrium. Let's assume the new charges on the spheres are Q1' and Q2'.

According to the principle of charge conservation, the total charge before and after the connection remains the same:

Initial total charge = Q1 + Q2 = -3C + 1C = -2C

Final total charge = Q1' + Q2'

Since the total charge remains the same, we can write the equation:

Q1' + Q2' = -2C

Since the spheres are of equal size, we can assume that the charges redistribute equally:

Q1' = -1C

Q2' = -1C

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The question probable may be:

A conducting wire is connected between two conducting spheres of equal size have a charge of -3C and +1C respectively. Find out the new charge on each sphere ?

Here the focal length of the convex mirror as -12 cm, a light bulb with a diameter of 6 cm is placed 60 cm from the mirror. Hence, the image distance is -60 cm, and the image height is 6 cm.

To find the image distance and height, we will use the mirror formula for a convex mirror, which is given as follows;1/f = 1/v + 1/u. Where, f = focal length of the convex mirror;

v = the image distance;

u = the object distance

If the object distance is positive, it means the object is placed in front of the mirror, and if it is negative, it means the object is placed behind the mirror. The focal length of a convex mirror is always negative, as given above.

Therefore, u = -60 cm and f = -12 cm.

Plugging in the values in the mirror formula, we get:1/-12 = 1/v + 1/-60=> -5/60 = 1/v - (1/60) => -5/60 = (60 - v)/60=> v = -300/5= -60 cm

The image distance is -60 cm, which means the image is virtual and erect. The negative sign indicates that the image is formed behind the mirror.

To find the image height, we use the magnification formula:

m = -v/u= -(-60)/(-60)= 1

The magnification is 1, which means the image is of the same size as the object. The height of the light bulb is 6 cm, so the height of the image will also be 6 cm.

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Answer:

Cause and effect, problem and solution, order of importance, comparison and contrast.

Explanation:

Answer:

The first choice (32m/s) is the closest to the answer

Explanation:

The magnitude of a vector is the distance between the initial and the end point of the vector.

Being Vx and Vy the horizontal and vertical components of the vector V respectively, the magnitude of V is calculated as:

\(\mid \vec{V} \mid =\sqrt{V_x^2+V_y^2}\)

The components of the velocity of the physics student's projectile launcher are Vx=28 m/s and Vy=15 m/s.

Calculate the magnitude of the velocity:

\(\mid \vec{V} \mid =\sqrt{28^2+15^2}\)

\(\mid \vec{V} \mid =\sqrt{784+225}\)

\(\mid \vec{V} \mid =\sqrt{1009}\)

\(\mid \vec{V} \mid =31.8 \ m/s\)

The first choice (32m/s) is the closest to the answer

Answer:

323 m.

Explanation:

The frequency is 640 kHz.

(wavelength) = =

We will now change 640KHz to Hz. This is attainable as follows:

1 KHz = 1000 Hz

Therefore,

640 KHz is equal to 640 KHz 1000 Hz / 1 KHz.

640 kHz = 64×10⁴ Hz

As a result, 640KHz is equal to 64025 Hz.

The following equation connects a wave's wavelength () and frequency (f):

Wavelength x Frequency = Velocity

v = λf

The radio wave wavelength can be calculated using the formula above as follows:

Frequency (f) equals 64 to 104 Hz

The electromagnetic wave's (v) speed is 3 x 108 m/s.

(wavelength) = =

v = λf

3×10⁸ = λ × 64×10⁴

By 64025, divide both sides.

λ = 3×10⁸ / 64×10⁴

λ = 487m

Consequently, the radio wave's wavelength is 487 m.

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Answer: solar power converters

Answer:

Outlets besides a battery

Answer: A MA = 0.048

Explanation: 35 divided by 735 is equal to 0.048

The mechanical advantage (MA) of the simple machine is 0.047 if the brick mason builds a simple machine to lift bricks from the ground up to the second story of a building.

A tangible body's mass is the amount of matter it possesses. It's also a metric of inertia or the resistance to velocity when a net force is exerted.

As we know,

The mechanical advantage (MA) is the ratio of the output force to the input force.

The mechanical advantage (MA) can be found as follows:

MA = F(o)/F(i)

F(o) = 35 N

Mass of the brick = 75 kg

F(i) = 735 N

MA = 35/735

MA = 0.047

Thus, the mechanical advantage (MA) of the simple machine is 0.047 if the brick mason builds a simple machine to lift bricks from the ground up to the second story of a building.

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By Ohm's Law, the voltage across the circuit is D. 12 v.

We need to know about Ohm's Law to solve this problem. Ohm's Law describes the relationship between voltage and current. It can be determined as

V / I = R

where V is voltage, I is current and R is resistance.

From the question above, we know that

I = 0.5 A

R = 24 Ω

By substituting the following parameters, we can calculate the voltage

V / I = R

V = I x R

V = 0.5 x 24

V = 12 volt

Hence, the voltage is 12 volts.

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Answer:

24.5°C

Explanation:

Answer:

oooh thats hard

Explanation:

well i would probaly search the page number or anthing on the page that   should help

The number of bright stars in a nearby cluster can also be determined from a single photograph by analyzing the cluster's luminosity function.

It is impossible to measure the rate at which a variable star brightens and dims from a single photograph. The rate at which a variable star brightens and dims cannot be measured from a single photograph. A variable star is a star that changes brightness over time, and their light curves are often used to study them. Light curves are plots of brightness over time, and they are used to study the properties of variable stars.

It is difficult to measure the rate at which a variable star brightens and dims from a single photograph because it is necessary to observe the star over a long period to obtain a complete light curve. Variable stars can be used to study a variety of phenomena in astronomy, including the evolution of stars, the structure of galaxies, and the expansion of the universe. The brightness of a star in our sky can be measured from a single photograph by measuring its apparent magnitude.

The apparent magnitude of a star is a measure of its brightness as seen from Earth. The general shape of an interstellar gas cloud can also be determined from a single photograph by analyzing its morphology. The color of a planet can also be determined from a single photograph by analyzing the wavelengths of light reflected by its atmosphere. Finally, the number of bright stars in a nearby cluster can also be determined from a single photograph by analyzing the cluster's luminosity function.

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Yes, light is simply a small segment of the electromagnetic spectrum. It is the part that our eyes can detect and perceive as visible light.

Light is a form of electromagnetic radiation, which is a type of energy that travels in waves. The electromagnetic spectrum is a range of all possible frequencies of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Each type of electromagnetic radiation has a different wavelength and frequency.

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye. It consists of different colors ranging from red to violet. When we see an object, it is because light reflects off the object and enters our eyes. This reflected light is made up of different colors, and our eyes perceive them as different shades and hues.

So, yes, light is simply a small segment of the electromagnetic spectrum. It is the part that our eyes can detect and perceive as visible light.

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Yes, light is simply a small segment of the electromagnetic spectrum. To get a long answer, let us define electromagnetic spectrum and light.Electromagnetic Spectrum This is the range of all electromagnetic radiation.

Electromagnetic radiation is energy that travels in the form of waves. They include microwaves, X-rays, gamma rays, visible light, radio waves, and others. These waves do not require a medium to travel and can move through a vacuum. They all travel at the speed of light and have different wavelengths and frequencies.LightLight is a form of electromagnetic radiation with a wavelength between 400 and 700 nm. The color of the light depends on the wavelength. Violet light has the shortest wavelength, while red light has the longest wavelength. When light passes through a prism, it splits into different colors due to the different wavelengths of the colors.

Light is a tiny section of the electromagnetic spectrum. It is located between ultraviolet radiation and infrared radiation. Electromagnetic radiation is classified based on its wavelength and frequency. As a result, the electromagnetic spectrum is divided into various areas, each with its own unique properties, ranging from short wavelength and high-frequency radiation to long wavelength and low-frequency radiation. Light is only a tiny portion of the spectrum, as previously mentioned. It falls within the visible spectrum, which ranges from 400 to 700 nm. This region includes all of the colors we can see with our eyes. The other parts of the electromagnetic spectrum are not visible to our eyes and must be detected with specialized equipment.

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The distance traveled before the car comes to a stop is approximately 75.7 ft (rounded to one decimal place).

Explanation:

Deceleration is the opposite of acceleration, and it refers to the rate at which an object slows down or decreases its velocity. Mathematically, deceleration is the negative acceleration. When an object is decelerating, it is experiencing a net force in the opposite direction of its velocity, causing it to slow down.

a car, traveling, and constant deceleration. To find the distance traveled before the car comes to a stop, we can use the following steps:

Step1. Convert the initial velocity (50 mi/h) to ft/s:
(50 mi/h) * (5280 ft/mi) * (1 h/3600 s) = 73.3 ft/s

Step2. Use the formula vf^2 = vi^2 + 2ad to find the distance (d), where vf is the final velocity (0 ft/s), vi is the initial velocity (73.3 ft/s), and a is the constant deceleration (-28 ft/s^2):
0 = (73.3 ft/s)^2 + 2(-28 ft/s^2)(d)

Step3. Solve for the distance (d):
d = (73.3 ft/s)^2 / (2 * 28 ft/s^2) = 75.7 ft

So, the distance traveled before the car comes to a stop is approximately 75.7 ft (rounded to one decimal place).

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In a uniform magnetic field is parallel to and in the direction of the positive z-axis, for an electron to enter this field and not be deflected by the field, the electron must be traveling in along the positive z axis.

A uniform magnetic field refers to a magnetic field that is characterized by the same strength and direction at all points and is represented by a set of parallel lines spaced equally. The magnetic field lines direction is in the same direction as the magnetic field lines of a magnet. When an electron enters this field which is parallel to and in the direction of the positive z-axis, and not be deflected by the field, it must also be traveling in the positive z-axis. As the magnetic field exert no force on a charge moving parallel to the field direction its direction will remain unaffected after entering the magnetic field hence the electron must have the same direction.

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Explanation:

The sun gravity keeps the solar system i.e planets in its place and orbits if there is no sun the planets would flying off and  It would be complete and utter chaos in our solar system