Carbon is an element on the periodic table while carbon dioxide is a compound. This is because carbon dioxide is ....

The height of a cliff is 8.26 m

We changed this for our required

\(y_{0}\) = - \(V_{0}\)t - 1/2 ^2                (1)

Now, t = 2.35s

a = -9.8 m/\(S^{2}\)

Substitute this value in equation (1)

\(y_{0}\) = - \(V_{0}\)t - 1/2 ^2  

\(y_{0}\) = -(8.00m/s) (2.355) - 1/2 (-9.8m/s) \(2.35^{2}\)

\(y_{0}\) = 8.26 m

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Answer: D. because all the fluids in your body rush to your head upon arrival in space

Explanation:

because all the fluids in your body rush to your head upon arrival in space

The face swells because, the blood rush to the upper parts of the body, due to microgravity.

A very different consequence occurs in space. The lower body cannot draw blood there due to microgravity. As a result, astronauts have puffy cheeks and enlarged blood vessels in their necks because blood circulates to the chest and head.

Two things must occur for the brain and heart to receive adequate blood. The legs and the area of the stomach must pump blood back to the heart.

After the heart has exhausted its supply of blood, the blood arteries must contribute to the production of sufficient pressure to move the blood up to the brain.

The lack of blood flow in these areas is due to the microgravity.

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ANSWER:

500 J

STEP-BY-STEP EXPLANATION:

Given:

Mass of object = 10 kg

Speed = 10 m/s

The kinetic energy is calculated using the following formula:

The kinetic energy is 500 J.

Answer:

true

Explanation:

Because the more mass you have, the faster the speed and the greater its potential energy, which is a storage energy.

A student drops a ball and it falls downward. Types of energy are involved in this energy transformation are kinetic and gravity potential.

Energy is defined as the capacity of a physical system to perform work.

Types of energy are Kinetic energy and potential energy.

The energy an object has as a result of motion is known as kinetic energy. Applying force to an object will cause it to accelerate.

Potential energy is the energy that is stored in any object or system as a result of its position or component arrangement.

A student drops a ball and it falls downward then there is kinetic energy due to motion and potential energy due to height.

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Answer:

A: Anxious

Explanation:

got a 100% of Edge

When traveling twice as fast your kinetic energy is increased: by four times

It is the energy possessed by a body due to its relative motion. It is usually expressed in Joules (J).

The kinetic energy depends on velocity, so when the velocity increased twice the kinetic energy increase 2^2= 4

The kinetic energy formula is:

K.E. = 1/2 * m * v²

Where:

v = speed

m = mass

Joules = Kg m²*s²

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Condensation warms us because airborne water molecules that impact our bodies give up some of their kinetic energy to us.

What is kinetic energy?

Kinetic energy is the energy of motion. It is the energy that a moving item possesses.It is typically measured in joules and is equal to the work done to accelerate the object from its rest state to its current state. Kinetic energy can be found by multiplying the mass of an object by its velocity squared, divided by two. The kinetic energy of an object increases as its velocity increases.Kinetic energy exists in both linear and rotational forms. Linear kinetic energy is the energy of an object moving in a straight line, while rotational kinetic energy is the energy an object has due to its spinning or rotating motion.

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The magnetic field lines around a long, straight current are in the form of concentric circles centered on the current.

This is because the magnetic field lines follow the right-hand rule, which dictates that the direction of the magnetic field is perpendicular to both the direction of the current and the direction of the thumb when the fingers are wrapped around the current.

Therefore, the magnetic field lines will form circles around the current, with the current passing through the center of these circles. This concept can discussing the physics behind the right-hand rule, the properties of magnetic fields, and the specific shape of the field lines around a long, straight current.

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Answer:

1.) Chemical Change - a change in matter that results in a change in its identity and properties

2.) Combustibility - the ability of a substance to burn

3.) Reactivity - The ability of a substance to combine Chemically with another

4.) Chemical Property - the ability of matter to change into a different substance

Explanation:

Proof: -Image Below & the definitions for each word-

Chemical Change- Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. ... An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen.

Combustibility- Combustibility is a measure of how easily a substance bursts into flame, through fire or combustion. This is an important property to consider when a substance is used for construction or is being stored. It is also important in processes that produce combustible substances as a by-product.

Reactivity- In chemistry, reactivity is the impetus for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy.

Chemical Property- A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity. ... They can also be useful to identify an unknown substance or to separate or purify it from other substances.

Have a nice day!

Chemical change - A change in a substance that brings a change in its identity and properties

Combustibility - The ability of a substance to bursts into the combustion

Reactivity - The ability of a matter to chemically combine with others.

Chemical Property - The ability of a substance to change into a completely different substance.

Chemical changes take place when a substance combines with another substance to create a new substance, called chemical synthesis. An example of a chemical change is the formation of sodium hydroxide and hydrogen by the reaction between sodium and water.

Combustibility determines how easily a substance can burst into flame, through combustion. The combustibility is a property to consider when a substance is used for storage or for construction. It is also an important property in processes where the formation of combustible substances is a side product.

In chemistry, reactivity is the property of a chemical substance that undergoes a chemical reaction with itself or with other chemicals,  and the overall release of energy.

Chemical properties are the characteristics of a particular substance that can be noticed during a chemical reaction. Some major chemical properties include heat of combustion, flammability, rate of radioactive decay, toxicity, pH value, and chemical stability.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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The instantaneous velocity of the object in free fall that has a velocity of 5 m / s in the upward direction one  second later is 4.8 m / s

According to equation of motion,

v = u + a t

v = Final velocity

u = Initial velocity

a = Acceleration

t = Time

u = 5 m / s

t = 1 s

In a free fall the acceleration is due to the force of gravity. So,

a = g = - 9.8 m / s²

v = u + a t

v = 5 + ( - 9.8 * 1 )

v = 5 - 9.8

v = - 4.8 m / s

Negative sign indicates that the object is moving downwards.

Therefore, the instantaneous velocity is 4.8 m / s downwards

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When two point charges are 2.0 cm apart, and each charge experiences a 1.0 N electric force due to the other charge, we can use Coulomb's law to determine the electric force at a new separation of 8.0 cm.

Coulomb's law states that the electric force between two charges is directly proportional to the product of their magnitudes and inversely proportional to the square of the distance between them.

Let's denote the magnitudes of the charges as q1 and q2, and the initial separation as r1. Since each charge experiences a 1.0 N electric force, we can set up the equation as follows:

\(k * (q1 * q2) / (r1^2) = 1.0 N\)

where k is the electrostatic constant.

Now, we need to find the new electric force when the separation is 8.0 cm. Let's denote the new separation as r2. Using the same equation, we can set it up as:

\(k * (q1 * q2) / (r2^2)\)= ?

To find the closest value to the electric force, we need to compare the two equations:

\(k * (q1 * q2) / (r1^2) = 1.0 N\)
\(k * (q1 * q2) / (r2^2)\) = ?

Since the electrostatic constant (k), the charges (q1 and q2), and the distance between the charges (r1) are all the same in both equations, we can set up a ratio:

\((r1^2) / (r2^2)\) = 1.0 N / ?

Simplifying the ratio, we have:

\((r1^2) / (r2^2) = 1.0\)

To find the value of ?, we rearrange the equation:

\(? = 1.0 N * (r2^2) / (r1^2)\)

Using the given values,\(? = 1.0 N * (8.0 cm)^2 / (2.0 cm)^2 = 16.0 N.\)

Therefore, the electric force on each charge, when they are moved to a new separation of 8.0 cm, is closest to 16.0 N.

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The result of two or more vectors is the outcome.  it's the outcome of multiplying two or more vectors.  The resultant result of adding the displacement vectors A, B, and C are vector R. An appropriately drawn, scaled, vector addition diagram is often used to compute vector R, as illustrated within the diagram.

What do three resultant vectors add up to?

Afbeeldingsresultat for these vectors' offspring

The outcome of multiplying vectors A + B + C is the same as that of multiplying vectors B + A + C or even C + B + A.  The resultant result will be the same as long as all three vectors are present with the appropriate magnitude and direction. The resultant of two or more vectors is the outcome.

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Answer:

linear charge density is 36.51 x 10^-9 C/m

E at a distance of 2.5 m is 3.27 x 10^6 N/C

Explanation:

(a) The linear charge density is defined as the charge per unit length along the rod. To find the linear charge density (λ), we divide the total charge (Q) by the length of the rod (L):

λ = Q / L

Given that the charge Q is 230 nC (nano Coulombs) and the length L is 6.3 m:

λ = 230 nC / 6.3 m

Converting the charge to Coulombs (1 nC = 10^-9 C):

λ = (230 x 10^-9 C) / 6.3 m

Calculating the linear charge density: λ ≈ 36.51 x 10^-9 C/m

(b) When considering the rod as an infinite charge distribution, we can calculate the electric field (E) at a distance (r) using the formula:

E = λ / (2πε₀r)

Where ε₀ is the permittivity of free space.

Given that the distance (r) is 2.5 m, and the permittivity of free space (ε₀) is approximately 8.85 x 10^-12 C^2/(N·m^2), we can calculate the electric field:

E = (36.51 x 10^-9 C/m) / (2π(8.85 x 10^-12 C^2/(N·m^2))(2.5 m)

Calculating the electric field: E ≈ 3.27 x 10^6 N/C

Therefore, at a distance of 2.5 m from the infinite charge distribution of the rod, the electric field is approximately 3.27 x 10^6 N/C.

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The speed of light relative to its source is light moves at the same speed independent of the motion of the source. Option B.

The Special Theory of Relativity is based on Einstein's discovery that the speed of light does not change as the light source moves. It may seem logical to add the speed of the light source and the speed of the ray to determine the overall speed, but light doesn't work that way.

The speed of light is constant for everything. What Newton, and later Einstein, showed was that there was no underlying frame of reference. All movements are relative. Light differs only in that everyone perceives it at the same relative speed. The speed of light is independent of the movement of the observer. The speed of light does not change with time or place.

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So 245×10³ N/m the force needed to open the hatch from the inside.

We are aware that pressure rises as we go deeper into any liquid, even water.

Following are the changes in fluid pressure with depth.

P = ρgh

Here, represents the fluid's density.

The height of the liquid column is equal to h and the acceleration caused by gravity is g.

Keep in mind that gh represents the pressure increase caused by the liquid column, while the actual pressure would be

P =  ρgh  + P₀

P₀ is the atmospheric pressure

Hatch present at height 25m

Diameter of the hatch = 0.45m , Radius = 0.225m

Pressure inside the submarine = 1 atm

Pressure on hatch from outside = 1 atm + ρgh

Pressure from inside the submarine on the hatch = 1 atm

Net pressure on the hatch = ρgh

ρgh = 10³ × 9.8 × 25 = 245×10³ N/m.

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Answer:

The average velocity of an object is its total displacement divided by the total time taken. In other words, it is the rate at which an object changes its position from one place to another. Average velocity is a vector quantity. The SI unit is meters per second. Or the constant speed in a certain direction.

Explanation:

Answer:

The constant speed in a certain direction

Explanation:

a certain laser outputs pure green light (photon energy 2.5 ev) with a power of 800 milliwatts (0.8 watts). the laser emits \(2 x 10^18\) photons per second.

To calculate the number of photons emitted per second by a laser, we can use the formula:

Number of photons = Power / Energy per photon

Given that the power of the laser is 0.8 watts and the photon energy is 2.5 electron volts (eV), we need to convert the energy into joules before proceeding with the calculation. Since 1 eV is equal to 1.6 x 10^-19 joules, the energy per photon is:

\(Energy per photon = 2.5 eV * 1.6 x 10^-19 J/eV = 4 x 10^-19 J\)

Now, we can calculate the number of photons emitted per second:

\(Number of photons = 0.8 W / (4 x 10^-19 J) = 2 x 10^18 photons/s\)

Therefore, the laser emits  \(2 x 10^18\) photons per second.

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The roof of the Hearst Tower is designed to collect rainwater for several reasons, including sustainability and environmental considerations.

Here's an explanation of why rainwater collection is incorporated into the design:
1. To reduce stormwater runoff: By collecting rainwater, the roof helps prevent excess water from overwhelming the city's sewer system and contributing to flooding.
2. To conserve water resources: The collected rainwater can be used for various purposes within the building, such as irrigation, flushing toilets, or cooling systems, reducing the demand for freshwater resources.
3. To promote sustainable architecture: The Hearst Tower is designed with environmental sustainability in mind, and rainwater collection is one of the many green features incorporated into its design.

In summary, the roof of the Hearst Tower is designed to collect rainwater to reduce stormwater runoff, conserve water resources, and promote sustainable architecture.

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Answer:

The speed at which a planet orbits the Sun changes depending upon how far it is from the Sun. When a planet is closer to the Sun the Sun’s gravitational pull is stronger, so the planet moves faster. When a planet is further away from the sun the Sun’s gravitational pull is weaker, so the planet moves slower in its orbit.

Answer:

What is an electromagnetic wave

Explanation:

Electromagnetic radiation is also more commonly known as light, light travels in waves- and light travels at the same speed as electromagnetic waves. :)

The near side of the Earth is 12740 km closer to the Moon than the far side. As a result, the near side experiences a gravitational force that is 7% stronger than the far side.

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The molar mass of diatomic oxygen is sixteen times that of diatomic hydrogen. The diatomic oxygen root-mean-square speed ( \(V_rms\) )at 50°C is: (d) (14)(2000 m/s) = 500 m/s

The root-mean-square speed (\(\[v_\text{rms}\)) of a gas molecule is given by the equation:

\(\[v_\text{rms} = \sqrt{\frac{3kT}{m}}\]\)

where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the molar mass of the gas.

In this case, we are comparing diatomic oxygen (O₂) and diatomic hydrogen (H₂), where the molar mass of oxygen is 16 times that of hydrogen.

Since the molar mass of hydrogen (H₂) is approximately 2 g/mol, the molar mass of oxygen (O₂) would be approximately 16 * 2 = 32 g/mol.

Converting the molar mass to kg/mol (by dividing by 1000), we get 0.032 kg/mol for oxygen.

Now, plugging in the values into the formula, we have:

\(\[v_\text{rms} = \sqrt{\frac{3kT}{m}}\]\)

\(\[v_\text{rms} = \sqrt{\frac{3k(50 + 273.15)}{0.032}}\]\)

Calculating this, we find that the \(\[v_\text{rms}\) for diatomic oxygen at 50°C is approximately 503.59 m/s.

Therefore, the correct answer is: (d) (14)(2000 m/s) = 500 m/s

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Explanation:

a) Distance ➤ (80+50+70+40) m. ➤ Distance= 240m.

b) Displacement ➤ (50+40)m. ➤ Displacement= 90m

c) Average Speed ➤ Total distance travelled/total time taken

                              ➤ 240/48

                              ➤ 5 \(ms^{-1}\)

d) Average Velocity ➤ Total displacement/total time taken

                                 ➤ 90/48

                                 ➤ 1.875 \(ms^{-1}\)

The correct statement is the ball hits the floor of the bus directly beneath the student's hand.

When the student drops the ball inside the bus, both the student and the ball are initially moving forward with the same constant velocity as the bus.

Since there are no horizontal forces acting on the ball, it will continue to move forward horizontally with the same velocity as the bus.

In the reference frame of a stationary observer outside the bus and to one side, the ball still retains the forward velocity of the bus when it is dropped.

This means that as the ball falls vertically due to the force of gravity, it maintains its forward velocity.

As a result, the ball will land on the floor directly beneath the student's hand because the ball continues to move forward with the same velocity as the bus while falling due to gravity.

The other statements are false because they do not account for the fact that the ball and the bus share the same constant forward velocity.

The ball will not fall vertically straight down (Statement A), it will not hit the floor in front of the student (Statement B), and it will not hit the floor behind the student (Statement C).

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Explanation:

1.Plastic

Thermal Degradation – Plastic materials subjected to prolonged exposure to high temperatures will lose strength and toughness, becoming more prone to cracking, chipping, and breaking, at a rate in proportion to the temperature and time of exposure.

2.Iron

At room temperature, the iron atoms are in an unusual loosely packed open arrangement; as iron is heated past 912 degrees Celsius, the atoms become more closely packed before loosening again at 1,394 degrees Celsius and ultimately melting at 1,538 degrees Celsius

to find the modulus of elasticity MoE at 23% of moisture content based on the already given modulus of elasticity of 12% moisture content we need to consider a shrinkage behavior of material. the expected MoE comes out to be approximately \(6,836 N/mm².\)

given information:

Modulus of elasticity at 12% moisture content =7,920 N/mm²

resultant shrinkage or final shrinkage percentage FSP = 30%

To calculate the expected MoE at 23% moisture content we have the following equation:

MoE-23% =   \(MoE-12%\) \((1 - FSP (23 - 12) / (100 - 12))\)

MoE-23% = \(7,920 N/mm² × (1 - 0.30 × (23 - 12) / (100 - 12))\)

MoE-23% =\(7,920 N/mm² × (1 - 0.30 × 11 / 88)\)

MoE-23% = \(7,920 N/mm² × (1 - 0.1364)\)

MoE-23% = \(7,920 N/mm² × 0.8636\)

MoE-23% =  \(6,836 N/mm²\)

therefore the expected modulus of elasticity at 23% moisture content comes out to be approx \(6,836 N/mm²\).

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Answer:

The squeeze will not regain its shape

Explanation:

The squeeze bottle will not regain its shape.

This is because the atmospheric pressure compresses the squeeze bottle. Since the pressure in the squeeze bottle is now not equal to the atmospheric pressure since it has been corked tightly, its internal pressure cannot balance out the atmospheric pressure and thus cancel its effect.

So, the squeeze bottle does not regain its shape due to this imbalance of pressure.