what best describes the relationship between climate change and global warming?

A. climate change is one example of global warming.
B. climate change includes global warmings as well as other factors.
C. climate change and global warming are the same phonemenon
D. climarte change and global warming have no relationship

Answer:

1.7 g/cm³

Explanation:

Given that:

Density of substance = 3.4 g/cm³

Relative density to another substance = 2

Density of second substance=?

Let density of second substance = x

Relative density = density of substance / density of second substance

Relative density = density of substance / x

2.0 = 3.4g/cm³ / x

2 * x = 3.4 g /cm³

x = 3.4 g/cm³ ÷ 2

x = 1.7 g/cm³

Answer:

Explanation:

Look at the equation for Potential Energy. PE = mass times gravity times the height. Filling in and solving for h:

34.3 = .5(9.8)h so

34.3 = 4.9h so

h = 7 meters

Answer:

a lever that is what is used

The angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

To determine the angles θ and θ' in the given scenario, we can use Snell's Law, which relates the angles of incidence and refraction to the refractive indices of the media involved. Snell's Law can be stated as follows:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Where:

n₁ is the refractive index of the medium of incidence (in this case, air with a refractive index close to 1),

θ₁ is the angle of incidence,

n₂ is the refractive index of the medium of refraction (in this case, linseed oil with a refractive index of 1.48), and

θ₂ is the angle of refraction.

Let's solve for the unknown angles θ and θ' using the given information.

Given:

Angle of incidence θ = 1°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of refraction θ₂.

Using Snell's Law, we have:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

sin(θ₁) = n₂ * sin(θ₂)

Plugging in the values:

sin(1°) = 1.48 * sin(θ₂)

We can now solve for θ₂:

θ₂ = arcsin(sin(1°) / 1.48)

Calculating this value, we find:

θ₂ ≈ 0.688°

Now, let's determine the angle θ'.

Given:

Angle of refraction θ₂ = 0.688°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of incidence θ'.

Using Snell's Law, we have:

n₂ * sin(θ₂) = n₁ * sin(θ')

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

n₂ * sin(θ₂) = sin(θ')

Plugging in the values:

1.48 * sin(0.688°) = sin(θ')

Solving for θ', we find:

θ' = arcsin(1.48 * sin(0.688°))

Calculating this value, we get:

θ' ≈ 1.988°

Therefore, the angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

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Answer:

1875 J

Explanation:

kinetic energy= \(\frac{1}{2}\)×mass×velocity²

K.E=\(\frac{1}{2}\)mv²

K.E=\(\frac{1}{2}\)×150×5.0²

K.E= 1875 J

The equivalent resistance when the resistors are connected in series is given by the expression, R eq = R₁ + R₂ + R₃ + ... + Rₙ.

When the same quantity of current flows through each resistor at the same time, two or more resistors are said to be connected in series. The voltage across each resistor in such circuitry varies. If any resistor in a series link breaks or has a fault, the circuit as a whole is shut off. A series circuit can be built more easily than a parallel circuit.

The sum of all individual resistances makes up the system's overall resistance.

R eq = R₁ + R₂ + R₃ + ... + Rₙ

Thus, the required expression of equivalent resistance for resistors connected in series is found out.

The question is inappropriate. It is solved generally according to my knowledge.

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Answer:

\(\huge\boxed{\sf Option \ A}\)

Explanation:

When we stir the solution such that it forms a mixture and the sugar is completely dissolved, we still find some ice cubes floating in the tea which shows that it is a heterogeneous mixture.

A Heterogeneous Mixture:

It is a mixture which has two or more phases that can be separated by physical means.

\(\rule[225]{225}{2}\)

Hope this helped!

Answer: Some ice cubes are floating in the tea.

Explanation:

A. Some ice cubes are floating in the tea.

B. Some water droplets form on the outside of the glass.

C. The mixture looks the same throughout.

D. The sugar crystals are no longer visible in the tea.

The total angular momentum of the two-disk system after the smaller disk is dropped on the larger disk is \(\omega _2 = (I_1\times \omega _1) / (I_1 + m_2 \times r^2)\).

The total angular momentum of the two-disk system after the smaller disk is dropped on the larger one will depend on the initial angular momenta of the two disks and any changes that occur when they collide.

Assuming the system is isolated, the total angular momentum before and after the collision must be conserved. Before the collision, we can assume that the smaller disk has an initial angular momentum of zero since it is not rotating, and the larger disk has an initial angular momentum given by:

\(L_1 = I_1 \times \omega_1\)

where \(I_1\) is the moment of inertia of the larger disk and ω₁ is its initial angular velocity.

When the smaller disk is dropped onto the larger one, there will be a transfer of angular momentum from the smaller disk to the larger one. The final angular velocity of the combined system will depend on the moment of inertia of the combined system, which can be approximated as:

\(I_2  I_1 + m_2 \times r^2\)

Where m_2 is the mass of the smaller disk and r is the distance from the center of the larger disk to the point where the smaller disk makes contact. We assume that the collision is elastic and that no external forces act on the system, so angular momentum is conserved:

\(L_1 = L_2\)

\(I_1 \times \omega _1 = (I_1 + m_2 \times r^2) \times \omega _2\)

Solving for ω₂, we get:

\(\omega _2 = (I_1\times \omega _1) / (I_1 + m_2 \times r^2)\)

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Answer:410.022779

Explanation: To figure out force, you use the equation F=MA. Well, in this case, you're trying to find M. The mass. All you have to do is rearrange. F=MA turns into A=F/M.

Streamflow is the flow of water in streams, rivers, and other channels, and is a key component of the water cycle. It's influenced by a variety of factors, including the shape and depth of the riverbed, the gradient of the stream, the size and shape of the channel, and the amount of water flowing through it. The given statement is false.It is affected by many factors.

All of these factors influence the velocity of the streamflow. Riverbed and streamflow relationshipThe velocity of streamflow is primarily influenced by the gradient or slope of the riverbed. A shallow slope will not yield high velocity streamflow, but instead will create a slow-moving, meandering stream with a high potential for sedimentation and erosion. In contrast, a steep gradient will create a fast-moving stream with a higher velocity and more turbulent water. As a result, a steeper slope will produce higher velocity streamflow than a shallower slope, which will produce slower-moving streamflow. Therefore, a riverbed with a shallow slope will not yield high velocity streamflow. The statement is false.

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Answer:

D

Explanation:

Cool air sinks because it's denser and warm rises because it's less dense.

This is the principle you have in your air conditioning.

As the air is cooled it keeps falling that's why it's necessary to tilt the vents of of an AC at 45° so that the cold air would be well circulated.

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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Answer:

(B)   hot air is lighter than cold air

P V = N R T       ideal gas equation

If T (temperature) is smaller then N (number of moles) must be larger if other quantities remain constant,

Sara pushed a box of lab equipment along the ground, displacing it by 1 meter. she has done work on the box of lab equipment.

When a force is applied and an object is moved over a specified distance, a work has been completed. The following formula is used to calculate an object's work,

W = Fd

Where, F is the applied force, and d is the object's displacement.

Therefore ,Sara has therefore completed her work on the box of lab equipment when she moves it by 1 m.

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The equivalent resistance is always less than the smallest resistor in the parallel network.

Then the inverse of the equivalent resistance of two or more resistors connected in parallel is the algebraic sum of the inverses of the individual resistances.

If the two resistances or impedances in parallel are equal and of the same value, then the total or equivalent resistance, \(R_t\) is equal to half the value of one resistor. That is equal to R/2 and for three equal resistors in parallel, R/3, etc.

Note that the equivalent resistance is always less than the smallest resistor in the parallel network so the total resistance, \(R_t\) will always decrease as additional parallel resistors are added.

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The gravitational potential energy as a rollercoaster converts to kinetic energy when it moves downhill.

The kinetic energy of an object or body is due to its motion. When the roller coaster moves downhill it accelerates, thus the gravitational potential energy as a rollercoaster converts to kinetic energy.

The gravitational potential energy of an object or body is due to its position above the ground.

Therefore, the gravitational potential energy as a rollercoaster converts to kinetic energy when it moves downhill.

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The force exerted on the beam by the right support B is closest to: (B).320N is correct option.

If the beam is at rest, the sum of the forces and the sum of the torques acting on it must be equal to zero.

Assuming the beam is supported at its two ends, the sum of the forces acting on the beam will be equal to the weight of the beam, which is given by:

W = m * g

W = (600 N) / (9.81 m/s²) ≈ 61.14 kg

Each support will exert an equal and opposite force on the beam, which we can denote as F. Therefore, the sum of the forces acting on the beam will be:

ΣF = 2F - W = 0

Solving for F, we get:

F = W/2

F ≈ 30.57 kg ≈ 300 N

Therefore, the force exerted on the beam by the right support B is closest to 300 N.

The complete question is,

A uniform 400-N beam 6 m long rests on two supports. Support Ais im from the left end of the beam Support B is at the right end of the beam. What is the value in N. of support force exerted on the beam by the left support A? 400 0 320 240 O 160

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The velocity of the torpedo relative to Earth will depend on whether it is shot in the same direction or opposite direction of the spaceship's motion, and the specific velocities involved in the scenario.

Aa spaceship moving at a speed of 0.95 away from Earth, relative to an Earth observer, shoots a torpedo towards Earth. Let's break down the scenario step by step:

The spaceship is moving away from Earth at a speed of 0.95. This means that it is traveling at 95% of the speed of light relative to the Earth observer.

When the spaceship shoots a torpedo towards Earth, we need to consider the relative velocity between the spaceship and the torpedo. If the torpedo is shot in the same direction as the spaceship's motion, the velocity of the torpedo will be the sum of the spaceship's velocity and the velocity at which the torpedo is fired.

On the other hand, if the torpedo is shot in the opposite direction of the spaceship's motion, we need to consider the relative velocity in that case as well. The velocity of the torpedo will be the difference between the spaceship's velocity and the velocity at which the torpedo is fired.

In either case, it's important to note that the torpedo's velocity is relative to the spaceship, and then it would be relative to the Earth observer as well.

The velocity of the torpedo relative to Earth will depend on whether it is shot in the same direction or opposite direction of the spaceship's motion, and the specific velocities involved in the scenario. To provide a more accurate answer with numerical values, we would need additional information about the specific velocities involved in the scenario.

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3) 43

5) a - She should compare the increase in temperature...

(if a is wrong, try c)

The speed of the river is 0.5 Km/hr

Let X be the speed of the boat.

Let Y be the speed of the river.

Downstream speed

X - Y = 4

Upstream speed

X + Y = 5

By solving, we get

2X = 9

X =  4.5 Km/hr

Y =  0.5Km/hr

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Answer:

Light can travel through a glass or through a vacuum

Answer:

speed = m/s on y axis

time = s on x axis

when you calculate the slope you do y2-y1/x2-x1 right?

m/s/s become \(m/s^2\), which is the unit of acceleration

On a speed vs time graph, if you see that the line is constant, then acceleration = 0 because there is no difference in speed, you are not acceleration or decelerating.

So in summary, it's acceleration

Hope that that answers your question

Don't hesitate to leave a comment if you are confused about something

Explanation:

A type of device that is used as a nuclear reactor is called a "nuclear reactor." A nuclear reactor is a system that initiates and controls a nuclear chain reaction, producing heat energy through nuclear fission or fusion processes. These reactors are designed to generate electricity, produce heat for industrial purposes, or conduct research.

There are different types of nuclear reactors, including pressurized water reactors (PWRs), boiling water reactors (BWRs), and advanced reactor designs like sodium-cooled fast reactors (SFRs) and molten salt reactors (MSRs). Each type has its own unique characteristics and operating principles.

It's important to note that nuclear reactors utilize various substances, such as enriched uranium or plutonium, as fuel to sustain nuclear reactions. These substances undergo controlled fission reactions, releasing energy in the form of heat.

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Answer:

convex write convex only don't write convex lens

Explanation:

The height of the cliff is 24.2 m.

Let:

Using the Second Equation of Motion:

                               \(h = ut + 1/2 at^{2} \\h = 0 + 1/2 (10)(2.2)^{2} \\h = 0 + 5(2.2)^{2} \\h = 5(4.84)\\h = 24.2m\)

The Second Equation of Motion establishes a relationship between displacement and time. It can be used to calculate the displacement and time, in different conditions.

The cliff was 24.2m high above the water surface, into which the cliff diver dived.

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Velocity of  first ball is -28m/s , and velocity of second ball is -4m/s.

Velocity is a vector quantity that describes the rate of change of an object's position. It is equal to the displacement of an object divided by the time interval over which the displacement occurred. Velocity has both magnitude and direction, and its units are typically meters per second (m/s). The velocity of an object can change over time due to acceleration, and if an object is moving in a circular path, it also has a component of velocity perpendicular to its direction of motion, known as centripetal velocity.

Given : Coefficient of restitution

\($e=\dfrac{2}{3}$Velocity of mass\)

\($$1 \mathrm{~kg}$ after the collision is given by \\\\$V_1=\dfrac{\left(m_1-e m_2\right) u_1+(1+e) m_2 u_2}{m_1+m_2}$\\Or $\quad V_1=\dfrac{\left(1-\frac{2}{3} \times 2\right) \times 12+\left(1+\frac{2}{3}\right) \times 2 \times(-24)}{1+2}=-28 \mathrm{~m} / \mathrm{s}$\\\)

\(Velocity of mass $2 \mathrm{~kg}$ after the collision is given by \\$V_2=\dfrac{\left(m-e m_1\right) u_2+(1+e) m_1 u_1}{m_1+m_2}$\\Or $\quad V_2=\dfrac{\left(2-\frac{2}{3} \times 1\right) \times(-24)+\left(1+\frac{2}{3}\right) \times 1 \times(12)}{1+2}=-4 \mathrm{~m} / \mathrm{s}$\)

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Given data:

1) Runner jogged 40 m at a slow pace for 40 sec.

2) Stopped for 40 sec.

3) Again funs for 60 m in 20 sec.

Answer:

amount of displacement divided by the time the displacement occurs

Explanation:

Best answer of those given

Answer: The sound will increase in pitch.

Explanation:

According to the Doppler Effect, sounds will increase in pitch as they are nearing the listener, and then decrease in pitch as the sound moves further away. This is because when sound waves travel a shorter distance, the waves are more compact (higher frequency), producing a higher pitch. The further a listener is from the sound, the lower the pitch because the sound waves are more spread apart (lower frequency).

Answer:the basic building block of chemistry

an atom