The pitch of a sound you hear depends on the------------------ of the sound wave.The pitch of a sound you hear depends on the------------------ of the sound wave.

The claim can be Cosmetics, hygiene, and cleaning product emissions may be dangerous.

Evidence 1: Effect of Air Quality

Volatile organic compounds (VOCs), including formaldehyde, benzene, and toluene, can be found in a variety of cosmetic, hygiene, and cleaning goods. These VOCs have the potential to evaportate and cause indoor air pollution.

Environmental impact is evidence number two

Cosmetics, hygiene, and cleaning goods can have a detrimental environmental impact during manufacturing, usage, and disposal. Microplastics and certain chemicals are among the substances present in these items that may find their way into rivers and endanger aquatic life.

Evidence 3: Worker health effects

Occupational health risks can be present for workers who manufacture and produce hygiene, cleaning, and cosmetic items.

Reasoning: It is clear from the research that emissions from cosmetic, hygiene, and cleaning goods have the potential to be harmful.

Thus, this way, harmful are the emissions from cosmetics, hygiene, and cleaning products.

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It takes 79.4 s for a 1.57-a current to plate 0.1261 g of a metallic element from a solution containing m2 ions.  we need to determine the molar mass (M) and the number of moles of electrons transferred (n) for the metallic element (m). Since we don't have information about the specific element

To determine the metallic element (m) that is being plated from the solution, we need to use Faraday's law of electrolysis. According to Faraday's law, the amount of substance (m) that is deposited or plated on an electrode is directly proportional to the electric charge (Q) passed through the electrolyte. The equation is given by:

m = (Q * M) / (n * F)

where:

m is the mass of the substance plated,

Q is the electric charge,

M is the molar mass of the substance,

n is the number of moles of electrons transferred in the reaction,

F is Faraday's constant.

In this case, the electric charge Q is given by the product of the current (I) and time (t): Q = I * t.

From the information provided, the current is 1.57 A and the time is 79.4 s. Plugging these values into the equation, we have:

Q = (1.57 A) * (79.4 s) = 124.558 C

we cannot determine these values accurately. Therefore, we cannot determine the chemical symbol for the element without additional information about its molar mass and the number of moles of electrons transferred in the reaction.

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Answer:

B

Explanation:

B BBB

Answer: I think the answer is B if im not wrong

Explanation:

In materials such as metals the outer most electrons are loosely bound and therefore their movement is chaotic, this allows for the transportation of energy in form of electricity therefore, this materials are good conductors. The statement is true.

The working with electric charges, the symbol used in an equation to represent the electric field of an object is E. Thus, the correct option is B.

An electric field is defined as the physical field that surrounds the charges or electrically charged particles. The electric field is exerted the force on all the other charged particles and the force is either an attractive or repulsive force.

The electric field around the charges is denoted by the lines called electric field lines. The field lines are radially outwards if the charge is positive and the field lines are radially inwards if the charge is negative. For two charges, the field lines are starts from the positive charge and end with the negative charge.

The electric field equals force per unit test charge. The force is Coulomb's law between two charges. The electric field is also obtained as electric potential per unit displacement.

The electric field is denoted by the letter, E. E = F / q or -V/r, the negative sign indicates that the electric field moves opposite to the potential gradient. The unit of the electric field is Newton per coulomb or volt per meter.

Thus, the correct option is option B.

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There are 40 electrons in Zr.

The number of electrons in the element Zirconium (Zr) is 40. In the periodic table, Zr is located in period 4 and group 4 (also known as group IV), and it has an electron configuration of [Kr] 4d2 5s2. This means that it has two electrons in its 4d orbital and two electrons in its 5s orbital, giving it a total of 40 electrons.

We have to note that number of the protons in the nucleus would also be the number of the electrons that we can be able to find in the neutral atom.

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The image is located 1.43 cm behind the concave mirror when the object is moved to a distance of 15 cm from the mirror.

To solve this problem, we can use the mirror formula:

1/f = 1/do + 1/di

where f is the focal length of the mirror, do is the object distance, and di is the image distance.

We know that the mirror is concave, so its focal length is negative.  We also know that the image produced is virtual, so di is negative.

Using the given information for the first case:

do = 6 cm

di = -7.5 cm

f = ?

1/f = 1/do + 1/di

1/f = 1/6 + (-1/7.5)

1/f = -0.0333

f = -30 cm

Now, we can use the mirror formula again to find the image distance when the object is moved to a new position:

do = 15 cm

di = ?

f = -30 cm

1/f = 1/do + 1/di

1/-30 = 1/15 + 1/di

-1/30 = 1/di - 1/15

-1/30 = (15 - di)/15di

di(-1/30) = (15 - di)/15

-1.5 + 0.05di = di

1.05di = 1.5

di = 1.43 cm

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Answer:

Please find the attached pdf

Explanation:

Answer:

Explanation:

The mass of the object can be found by using the formula

\(m = \frac{p}{v} \\ \)

p is the momentum

v is the velocity

From the question we have

\(m = \frac{10}{20} = \frac{1}{2} \\ \)

We have the final answer as

Hope this helps you

Answer:

  75.645 J

Explanation:

The kinetic energy is related to the mass and velocity by the formula ...

  KE = 1/2mv²

For the given mass of 0.045 kg, and velocity of 41 m/s, the kinetic energy is ...

  KE = 1/2(0.045 kg)(41 m/s)² = 75.645 J

__

The unit of energy, joule, is a derived unit equal to 1 kg·m²/s².

Answer: isotopes

Explanation:

Explanation:

Initial speed, u = 0 km/h

Final sped, v = 50 km/h

Time, t = 8 s

1 minute = 60 seconds

⇒ 1 s = (1/60) minutes

⇒8 s = 0.1334 minutes

Acceleration,

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{50\cdot\dfrac{5}{18}}{8}\\\\a=1.73\ m/s^2\)

Hence, this is the required solution.

Answer:

I think no B

if wrong correct me plsssssss

Mark me brainliest

have a nice day

I will always help you understanding your assingments

#Captainpower:)

Explanation:

Force is push or pull on a body.

Contact force is a force that requires contact. It acts between two body that touches on another.

Examples are pushing a car, ringing a bell, kicking a ball.

Non contact forces are forces applied to another object without contact. The action of this force is usually through a targeted force field.

Examples are magnetic force, gravitational force

By observing from the equator, you can see all of the stars in the sky at different times of the year, as the earth's rotation and orbit allow you to see different parts of the sky throughout the year.

The equator is an imaginary line that circles the earth, dividing it into two hemispheres: the northern hemisphere and the southern hemisphere. It is the line of zero degrees latitude and is located approximately at 0.00°N latitude. It is about 40,075 kilometers long and is the only line of latitude that is equidistant from both the North Pole and the South Pole. The equator passes through 13 countries including Ecuador, Colombia, Brazil, Congo, and Kenya.

The equator has a unique climate, as it is located in the tropics and receives more direct sunlight than any other part of the earth. This results in a hot and humid climate, with temperatures averaging around 27°C. The equator also experiences frequent rain, with high rainfall levels, particularly in the Amazon Basin. The equator is home to a diverse range of plant and animal life, including tropical rainforests, which are some of the richest and most diverse ecosystems on the planet.

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What Would Happen to the Orbit of the Moon if it Were Twice as Massive? ... The orbit would not change.

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The type of circuit shown in the diagram is a closed series circuit. The Option C.

The circuit diagram illustrates a closed series circuit, where the components are connected in a series, forming a single loop. In a closed series circuit, the current flows through each component in sequence, meaning that the current passing through one component is the same as the current passing through the other components.

The flow of current is uninterrupted since the circuit forms a complete loop with no breaks or open paths. Therefore, the correct answer is a closed series circuit.

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In a space with hyperbolic geometry, the behavior of parallel lines differs from that of Euclidean geometry.

In hyperbolic space, parallel lines diverge from each other as they extend further.If two initially parallel flashlight beams traverse billions of light-years of space in a hyperbolic geometry, they will gradually diverge from each other. The divergence between the beams will increase as they travel a greater distance.

This phenomenon is a consequence of the non-Euclidean geometry of space. In hyperbolic space, the curvature causes parallel lines to "spread out" or diverge. The extent of the divergence will depend on the specific curvature of the space and the distance traveled.

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Answer:

1/3 power

Explanation:

I'm just a smart guy

For RC circuit: the value of the time constant τ is 12 μs.

For RL circuit: the value of the time constant τ is 0.115 ms.

It is proved that, τ = t1/2/ln(2) = 1.443 t1/2. This shows that the time constant is directly proportional to the square root of the half-life of the voltage decay.

For the RC circuit, the time constant τ is given by:

τ = RC = (10 nF)(1,200 Ω) = 12 μs

For the RL circuit, the time constant τ is given by:

τ = L/RL = (15 mH)/(130 Ω) = 0.115 ms

Now, for the RC circuit, the voltage across the capacitor can be given by:

vC(t) = Vmax(1 - e^(-t/τ))

where Vmax is the maximum voltage of the square wave, τ is the time constant, and t is the time. The voltage across the resistor is equal to vR(t) = vC(t), since the capacitor and resistor are in series.

For the RL circuit, the voltage across the resistor can be given by:

vR(t) = Vmax(1 - e^(-t/τ))

where Vmax is the maximum voltage of the square wave, τ is the time constant, and t is the time.

To show that τ = t1/2/ln(2), we start with the equation for voltage across the capacitor in the RC circuit:

vC(t) = Vmax(1 - e^(-t/τ))

Let t = τ, then we have:

vC(τ) = Vmax(1 - e^(-1))

vC(τ) = 0.632 Vmax

Now, let t = t1/2, then we have:

vC(t1/2) = Vmax(1 - e^(-t1/2/τ))

vC(t1/2) = Vmax(1 - e^(-1/2))

vC(t1/2) = 0.393 Vmax

The voltage across the resistor at t = τ and t = t1/2 can be found using the same equations as above.

Now, the half-life t1/2 is defined as the time it takes for the voltage to decay to half of its initial value. Thus, we have:

t1/2/τ = ln(2)

Solving for τ, we get:

τ = t1/2/ln(2) = 1.443 t1/2

This shows that the time constant is directly proportional to the square root of the half-life of the voltage decay.

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For someone with a negative Weber slope for weight detection, it would be easier to tell the difference between 20 pounds and 21 pounds.

The Weber's Law states that the just noticeable difference (JND) between two stimuli is proportional to the magnitude of the stimuli. A negative Weber slope indicates that the JND decreases as the magnitude of the stimuli increases. In this case, as the weight increases, the person's ability to discriminate between the weights becomes easier.

Therefore, option C, telling the difference between 20 pounds and 21 pounds, would be easier for someone with a negative Weber slope for weight detection.

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The volume of any rectangular solid, including a cube, is calculated mathematically as V = l × w × h

In a given calculation, if you are given the:

To find this, you would have to use the area of its base which is:

Length * Width * Height.

Furthermore, if the cross-section is parallel, then you would have to solve it thus:

Length * Width which is the area of the section from top to bottom.

Although your question is incomplete, the general idea of how to find the cross-sectional area of the volume of any rectangular solid.

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Answer:

sa64

Explanation:

The wavelength of light with a frequency of 5.77 x 10¹⁴Hz is approximately 5.19 x 10⁻⁷ meters or 519 nm.

Wavelength and frequency are two fundamental properties of light that are inversely related. The wavelength represents the distance between successive peaks or troughs of a wave, while frequency measures the number of complete oscillations per unit time.

To calculate the wavelength of light, we can use the equation:

Wavelength = Speed of Light / Frequency

The speed of light in a vacuum is approximately 3 x 10⁸ meters per second. Given a frequency of 5.77 x 10¹⁴ Hz, we can substitute these values into the equation:

Wavelength = (3 x 10⁸ m/s) / (5.77 x 10¹⁴  Hz)

Simplifying the calculation, we find:

Wavelength ≈ 5.19 x 10⁻⁷ meters or 519 nm

Therefore, the wavelength of light with a frequency of 5.77 x 10¹⁴ Hz is approximately 5.19 x 10⁻⁷meters or 519 nm.

It's important to note that different colors of light have different wavelengths within the electromagnetic spectrum. For example, red light typically has longer wavelengths than blue light. The specific wavelength determines the color of light that we perceive.

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Answer:

-5Gm^2/r

Explanation:

You don't have the graph, but I know what question you are talking about. The answer is above.

The new gravitational potential energy of the three-sphere system will  be\(- \frac{5Gm^2}{r}\).

The energy that an item has due to its location in a gravitational field is known as gravitational potential energy.

For the sphere 1 we have to perform no work. Hence, the work done is zero.

\(\rm W_1 = 0\)

The mass m is to be brought to be infinity. Because there is potential at B due to mass m at A point .

\(\rm W_2 = \frac{-Gm}{r} \times m \\\\ W_2 =-\frac{Gm^2}{r}\)

The B2 m at C is brought to infinity. For we have to do work . The  gravitational potential energy for the mass 2 m is;

\(\rm W_3 = \frac{-Gm}{r} \times 2m\\\\ W_3 = \frac{-4Gm^2}{y} \\\\\)

The new gravitational potential energy of the three-sphere system will be;

\(\rm W =W_1+W_2+W_3 \\\\\rm W =-0-\frac{Gm}{r}-4\frac{-Gm^2}{r^2} \\\\ W=\-\frac{-5Gm^2}{r^2}\)

Hence,  the new gravitational potential energy of the three-sphere system will  be\(- \frac{5Gm^2}{r}\).

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The frequency of the oscillation is 3.85 Hz. To calculate it, we can use the formula for the frequency of a mass-spring system: f = (1/2π) * √(k/m), where k is the force constant and m is the combined mass. Plugging in the values, we get f = (1/2π) * √(185 N/m / 7.00 kg) ≈ 3.85 Hz.

The frequency of an oscillating system depends on the mass and the stiffness of the system. In this case, the combined mass of the cat and platform is 7.00 kg, and the force constant of the spring is 185 N/m.

Using the formula for the frequency of a mass-spring system, we can calculate the frequency as f = (1/2π) * √(k/m), where k is the force constant and m is the combined mass. Plugging in the given values, we find the frequency to be approximately 3.85 Hz. This means that the cat and platform oscillate from side to side 3.85 times per second.

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