Two particles A and B start simultaneously from a Point P with velocities 20 m/s and 30 m/s respectively. A and B move with acceleration equal in magnitude but opposite in direction. When A overtakes B at Q, its velocity is 30 m/s. The velocity of B at Q :

The main differences between the carbon flow 300 years ago and today are the amount of carbon dioxide released into the atmosphere and the sources of those emissions.
300 years ago, the majority of carbon emissions came from natural sources, such as volcanic eruptions and forest fires. However, today, the majority of carbon emissions come from human activities, such as burning fossil fuels for energy and deforestation for agriculture and urbanization. Additionally, the amount of carbon dioxide released into the atmosphere has greatly increased in the past 300 years due to the industrialization of society and the increase in the human population. This has led to an increase in greenhouse gases in the atmosphere and has contributed to climate change.
In summary, the main differences between the carbon flow 300 years ago and today are the sources of emissions and the amount of carbon dioxide released into the atmosphere.

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Answer:

1610 meters

Explanation:

Answer:

1609.344 Meters

Explanation:

There is no explanation

The strength of gravity on Zarflax-beta-9z is 17 N/kg.

We can use the formula:

weight = mass x gravity

to determine the strength of gravity on Zarflax-beta-9z.

We know that the mass of the book is 3 kg and its weight is 51 N. So, we can rearrange the formula to solve for gravity:

gravity = weight / mass

gravity = 51 N / 3 kg

gravity = 17 N/kg

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Natural energy sources have been harnessed by humans for centuries, and one of the earliest uses of these energy sources was for milling grain.

Wind and moving water, specifically, have been used to power grain mills throughout history. Windmills were commonly used in areas with strong and consistent winds, such as the Netherlands and the American Midwest, to grind grains into flour. Watermills, on the other hand, used moving water, typically from a nearby river or stream, to power their machinery. This allowed for consistent and reliable power, which was essential for producing high-quality flour.

While modern technology has largely replaced traditional milling methods, there has been a resurgence of interest in using natural energy sources for grain milling. This is partly due to concerns about the environmental impact of fossil fuels and the desire for more sustainable energy sources. Today, small-scale wind and water turbines can be used to power grain mills in rural communities, helping to support local food systems and reduce reliance on non-renewable energy sources.

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Three different methods for the detection of exoplanets are transit method, radial velocity method, and direct imaging. and type of exoplanet is the method most sensitive for detecting is close-in vs. far-out from its host star.

The transit method involves observing a star's brightness and looking for periodic dips in brightness as an exoplanet passes in front of it. This method is most sensitive to detecting large exoplanets that are relatively close to their host stars. The size of the exoplanet can be determined by the amount of dimming, and its orbital period can be determined from the time between dips.

The radial velocity method involves measuring the small wobbles in a star's motion caused by the gravitational pull of an orbiting exoplanet. This method is most sensitive to detecting massive exoplanets that are relatively close to their host stars. The mass of the exoplanet can be determined from the amount of wobble, and its orbital period can be determined from the time between wobbles.

The direct imaging method involves using telescopes to take pictures of exoplanets directly. This method is most sensitive to detecting large, young exoplanets that are far away from their host stars. The brightness of the exoplanet can be used to determine its temperature, and its distance from its host star can be estimated from its location in the image.

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Explanation:

Through the various systems in the body for example the excretory system helps maintain homeostasis by filtering waste from blood, gets rid of waste and regulates fluid levels in the body.The respiratory system helps by giving the blood stream the oxygen it needs..

I hope this helps

Answer:

Thats sounds like a club

Explanation:

Answer:

??

Explanation:

The rate at which the current in the solenoid is changing at this instant is 4.4 A/s.

To determine the rate at which the current in the solenoid is changing, we can use Faraday's law of electromagnetic induction. According to Faraday's law, the induced electromotive force (emf) is equal to the negative rate of change of magnetic flux through a circuit. In this case, the solenoid acts as a circuit.

The induced electromotive force (emf) is given by:

emf = -dΦ/dt

Where:

emf is the induced electromotive force,

dΦ/dt is the rate of change of magnetic flux.

For a long solenoid, the magnetic flux (Φ) can be calculated as:

Φ = B * A

Where:

B is the magnetic field strength,

A is the area of the solenoid.

The magnetic field strength inside a solenoid is given by:

B = μ₀ * n * I

Where:

μ₀ is the permeability of free space (4π × 10^-7 T·m/A),

n is the number of turns per unit length (turns/m),

I is the current flowing through the solenoid.

Let's calculate the magnetic field strength (B) inside the solenoid:

B = μ₀ × n × I

 = (4π × 10^-7 T·m/A) × (800 turns/m) × I

 = (3.1831 × 10^-4) × I T

The area (A) of the solenoid can be calculated using the formula for the area of a circle:

A = π × r^2

Where:

r is the radius of the solenoid.

Let's calculate the area (A) of the solenoid:

A = π × r^2

 = π × (0.03 m)^2

 = 0.002827 m^2

Now, substitute the values of B and A into the formula for magnetic flux:

Φ = B × A

  = (3.1831 × 10^-4) × I T × 0.002827 m^2

  = 9.0 × 10^-7 × I Wb

Next, we differentiate the magnetic flux (Φ) with respect to time (t) to find the rate of change of magnetic flux:

dΦ/dt = d/dt (9.0 × 10^-7 × I)

       = 9.0 × 10^-7 × dI/dt Wb/s

Finally, we can equate the rate of change of magnetic flux (dΦ/dt) to the induced electromotive force (emf) given in the problem statement:

emf = -dΦ/dt

    = -9.0 × 10^-7 × dI/dt Wb/s

Given that the induced electromotive force (emf) is 4.0 μV/m = 4.0 × 10^-6 V/m, we can solve for the rate of change of current (dI/dt):

4.0 × 10^-6 V/m = -9.0 × 10^-7 × dI/dt

\(\frac{dI}{dt} = \frac{-(4.0) (10^-6 V/m)}{(9.0) (10^-7)} = -4.4 A/s\)

Therefore, the rate at which the current in the solenoid is changing at this instant is 4.4 A/s.

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Answer:

Explanation:

a gravitational field is the region of space surrounding a body in which another body experiences a force of gravitational attraction.

The formula is: weight/mass = gravitational field strength. On Earth the gravitational field strength is 10 N/kg.

an example of how you can use it if you need to find the gravitational force from earth.

If you were to examine the profile of a typical river, you would probably find the fastest flowing water closer to the center or thalweg the deepest part of the channel.

This is because the water flowing along the center of the channel experiences the least amount of friction with the river bed and banks, allowing it to flow more rapidly compared to the water near the edges of the channel which experiences more friction.Experience refers to the accumulation of knowledge, skills, and understanding that an individual gains through their interactions with the world around them. It includes both conscious and unconscious perceptions of sensory information, as well as emotional, cognitive, and social responses to those perceptions.Experience can be divided into two main types: subjective experience and objective experience. Subjective experience refers to the individual's personal interpretation of events and their emotional and cognitive reactions to those events.

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Answer:

3 x 10⁻⁴m

Explanation:

Given parameters:

Speed of light  = 300000km/s

Frequency  = 1000gigahz  = 1000 x 10⁹Hz

Unknown:

Wavelength = ?

Solution:

To solve this problem, we use the expression below:

    V  = F ∧  

V is the speed

F is the frequency

∧ is the wavelength

      300000 = 1000 x 10⁹ x   ∧  

Wavelength  = 3 x 10⁻⁷km = 3 x 10⁻⁴m

Answer:

Plural cerebrums cerebra The largest part of the vertebrate brain, filling most of the skull and consisting of two cerebral hemispheres divided by a deep groove and joined by the corpus callosum, a transverse band of nerve fibers. The cerebrum processes complex sensory information and controls voluntary muscle activity.

Explanation:

Light with a 660 nm wavelength has more energy than light with a 580 nm wavelength.

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Answer:

mass

Explanation:

Answer:

sequence

Explanation:

sequences are the way in which things are ordered, for example: 1, 2, 3, 4 is a sequence:)

When a liquid is cooled, the kinetic energy of the particles decreases. The force of attraction between the particles increases, the force of attraction between the particles increases and the matter changes its state to solid.

When a liquid is cooled, the kinetic energy of the particles decreases .

Kinetic energy can simply be defined as the energy a body possessed due to its relative motion.

So therefore, when a liquid is cooled, the kinetic energy of the particles decreases. The force of attraction between the particles increases, the space between the particles remains the same and the matter changes its state to solid..

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Answer:

5 Oxygen , 3 Carbon dioxide and 3 water

Answer: the answer is 5

The wall of the bulb of a thermometer is made thin beause allow the heat from sample being measured to reach the liquid quickly for fast response and quick reading (improves the quickness of response by the thermometer). ... — has a vacuum above the liquid column so there is no resistance to the expanding liquid.

Answer:

this is e=mc2

Explanation:

It means that energy and mass are the same

Answer:

60

Explanation:

60secs = 1 minute

if you want to show you work further then

10 divided by 10 = 1

so each second is 1 heart beat

so then just 60 divided by 10 equals 6

so then just do 6 times 10 equals 60 beats

High angular momentum leads to faster rotation, because faster rotation leads to collisions among particles that cause the gas to settle into a spiral disk, rather than a more spread out cloud.

What is the difference between an elliptical galaxy and a spiral galaxy?

Elliptical galaxies are ellipsoids with no clearly visible internal structure. Spiral galaxies have a very dense nucleus and a region of stars bulging outwards from the disks and, therefore, called the central bulge. Elliptical galaxies also have dense centers, but they do not protrude from the body of the galaxy.

Galaxies rotate, or spin around a central axis, and because of something called density waves, helps galaxies to become spiral in shape.

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The energy of a wave is directly proportional to the square of the amplitude of the wave.

There is direct relationship between energy of the wave and the amplitude of the wave. The energy transported by a wave is directly proportional to the square of the amplitude of the wave. This means if energy is increase the amplitude of wave becomes double and vice versa.

Energy = (amplitude)2

So we can conclude that the energy of a wave is directly proportional to the square of the amplitude of the wave.

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\(Energy = (amplitude)^{2}\)

Energy is define as the capacity for doing work.

Amplitude is the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position.

So , the relationship between energy of the wave and the amplitude of the wave is described as the energy transported by a wave is directly proportional to the square of the amplitude of the wave.

Here , If energy is increase the amplitude of wave becomes double.

\(Energy = (amplitude)^{2}\)

Hence , the energy of a wave is directly proportional to the square of the amplitude of the wave.

By using the above equation if the amplitude is 6 Units then :

Energy = \((6)^{2}\) = 36 units

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Answer:

a=0.84m/s²

Explanation:

a=v-u/t

where a=acelleration of the car,u=initial velocity,v=final velocity, t=time taken

a=?,u=15km/h,v=30km/h,t=5s

velocity is in m/s and we were given in km/h so we convert

or we say

v-u=30-15=15km/h

(v-u)=15×1000/3600=4.2m/s

a=v-u/t

a=4.2/5

a=0.84m/s²

225 mins long will a bus take to travel 150 km at an average speed of 40 km h

Since the average speed is 40km/h it means

40 km can be travelled by it in 1 hour

1 km can be travelled by it in 1/40 hour

So 150km can be travelled by it in 150/40 hours or 225 mins.

By formula time=distance/speed=150/40=3.75hours

Speed = Distance/Time – This tells us how slow or fast an object moves. It describes the distance travelled divided by the time taken to cover the distance. Time = Distance / Speed, as the speed increases the time taken will decrease and vice versa.

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The energy lost by the car on descent is 980×10⁴ J

We'll begin by calculating the energy of car at various heights.

Mass (m) = 1000 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Height (h) = 3000 m

E = mgh

E = 1000 × 9.8 × 3000

Mass (m) = 1000 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Height (h) = 2000 m

Energy (E) =?

E = mgh

E = 1000 × 9.8 × 2000

Finally, we shall determine the the energy lost

Energy at 3000 m = 29400000 J

Energy at 2000 m = 19600000 J

Energy lost = Energy at 3000 m – Energy at 2000 m

Energy lost = 29400000 – 19600000

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Answer: That is to say, a satellite is an object upon which the only force is gravity. Once launched into orbit, the only force governing the motion of a satellite is the force of gravity. Newton was the first to theorize that a projectile launched with sufficient speed would actually orbit the earth.

Explanation: Because Earth-orbiting objects follow elliptical paths around Earth and not a straight line, forces cannot, by definition, be balanced. Force is directional. It is a push or a pull in a particular direction.

(2) The force between masses C and E is 75 N.

(3) The force between masses A and B is 400 N.

(4) The force between masses A and C is 300 N.

(5) The force between masses D and F is 25 N.

(6) The force between masses B and E is 11.1 N.

(7) The force between masses C and D is 150 N.

(8) The force between masses C and F is 66.7 N.

Newton's law of universal gravitation is states that every object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportion to the square of the distance between them.

F = Gm₁m₂/r₂

where;

From the table, find the force at the intersection of C and E

F(C, E) = 75 N

From the table, find the force at the intersection of A and B

F(A, B) = 400 N

From the table, find the force at the intersection of A and C

F(A, C) = 300 N

From the table, find the force at the intersection of D and F

F(D, F) = 25 N

From the table, find the force at the intersection of B and E

F(B, E) = 11.1 N

From the table, find the force at the intersection of C and D

F(C, D) = 150 N

From the table, find the force at the intersection of C and F

F(C, F) = 66.7 N

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