As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. This creates (13%) Problem 2: quite a large pressure on the ground; in fact, in the early days of commercial flight, women were not allowed to wear high-heeled shoes because aircraft floors were too thin to withstand such large pressures. Calculate the pressure, in pounds per square inch, exered on the floor by the heel if it has an area of 1.45 cm2 and the woman's mass is 635 kg.

The concentration [Au⁺³] is 1.56 M.

The Nernst equation can be used to determine an electrode's potential for reduction in non-standard settings. Since the concentrations are different than 1M and the gas pressure is different than the value of 1 atm, this is what takes place in this instance.

The Nernst Equation is:

\(E = E^0 - \frac{R*T}{n*F} ln (Q)\)

Where,

E refers to the electrode potential.

Eº = potential in standard conditions.

R = gas constant.

T = absolute temperature (in Kelvin degrees).

n = number of moles that have participated in the reaction.

F = Faraday constant (with a value of 96500 C / mol, approx.)

Q = reaction ratio

For the reaction aA + bB → cC + dD, Q adopts the expression:

\(Q = \frac{[C]^0[D]^d}{[A]^a[B]^b}\)

Taking into account that;

R = 8.31 J. mol⁻¹ K⁻¹

T = 25 C = 298.15 K (with 0 C = 273.15 K)

\(E = E^0 - \frac{0.0592}{n} ln (Q)\)

The chemical reaction with the largest reduction potential will be the reduction reaction, in which an atom, ion, or molecule gives up electrons and increases its oxidation state. A reaction with a lower reduction potential is oxidation, in which a material absorbs electrons. In this case:

Reduction reaction: Au⁺³ + 3e⁻ ⇒ Au

Oxidation reaction:  Cu ⇒ Cu⁺² + 2e⁻

Writing the global reaction equaling the number of electrons:

2 Au⁺³ + 3 Cu ⇒ 2 Au + 3 Cu⁺²

Then E⁰=Ereduction - Eoxidation= 1.5 V - 0.34 V= 1.16 V

So,

E=1.15 V

E⁰=1.16 V

n=6

\(Q= \frac{[Cu^+^2]^3}{[Au^+^3]^2}\) being [Cu⁺²] = 1.20 M

Replacing in the equation;

\(1.15V = 1.16V - \frac{0.0592}{6} ln (\frac{1.20^3}{[Au^+^3]^2} )\\\)

\([Au^+^3]= 1.56 M\)

Therefore, the concentration [Au⁺³] is 1.56 M.

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Answer:

30 Kilometers per second

Answer:

Abdul has an apparent weight of 600 newtons.

Explanation:

The statement is incorrectly written. Its correct form is:

Abdul of mass 50 kg is standing in an elevator of his building. The elevator is moving upwards and is slowing down at a rate of 2.0 m/s2. What is Abdul's apparent weight? Use g = 10 m/s2.

According to the statement, we know that elevator and Abdul himself are moving upwards and decelerating, which means that Abdul feels a force from elevator is the same direction of his weight. From 2nd Newton's Law we find the following equation of equilibrium:

\(\Sigma F = F-m\cdot g = m\cdot a\) (1)

Where:

\(F\) - Apparent weight, measured in newtons.

\(m\) - Mass of Abdul, measured in kilograms.

\(g\) - Gravitational acceleration, measured in meters per square second.

\(a\) - Net acceleration of the elevator-Abdul system, measured in meters per square second.

In (1) we clear the apparent weight:

\(F = m \cdot (a+g)\)

If we know that \(m = 50\,kg\), \(a = 2\,\frac{m}{s^{2}}\) and \(g = 10\,\frac{m}{s^{2}}\), we find that the apparent weight of Abdul is:

\(F = (50\,kg)\cdot \left(2\,\frac{m}{s^{2}}+10\,\frac{m}{s^{2}} \right)\)

\(F = 600\,N\)

Abdul has an apparent weight of 600 newtons.

The diagram and information in the section "Stages of Photosynthesis" provide a coherent understanding of the light and dark reactions of photosynthesis.

The light-dependent reactions occur in the thylakoid membranes of the chloroplasts and are driven by light energy. The light energy is absorbed by pigments such as chlorophyll and converted into chemical energy in the form of ATP and NADPH. The light-dependent reactions also produce oxygen gas as a byproduct.

The ATP and NADPH produced in the light-dependent reactions are then used in the light-independent reactions, which occur in the stroma of the chloroplasts. The light-independent reactions, also known as the Calvin cycle, use carbon dioxide and the energy from ATP and NADPH to synthesize glucose and other organic compounds. The Calvin cycle does not directly require light, but it is dependent on the products of the light-dependent reactions.

Together, the light-dependent and light-independent reactions of photosynthesis form a coherent cycle that allows plants and other photosynthetic organisms to convert light energy into chemical energy in the form of glucose and other organic compounds. The diagram and information in the section "Stages of Photosynthesis" provide a clear visual and textual representation of this process, helping to develop a coherent understanding of the overall process of photosynthesis.

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Complete Question:

A coin is dropped off of a building landing on its side. It hits with a pressure of 400 N/m². It hits with a force of 0.1N. Calculate the area of the coin?

Answer:

Area = 0.00025 m²

Explanation:

Given the following data;

Pressure = 400N/m²

Force = 0.1N

To find the area of the coin;

Pressure = Force/area

Area = Force/pressure

Substituting into the equation, we have;

Area = 0.1/400

Area = 0.00025 m²

The elastic modulus parallel to the fibers of a composite material made of type E-glass fibers embedded in a matrix of ABS plastic, with all fibers to be aligned in the same direction can be calculated as follows:First, we need to calculate the elastic modulus of each component of the composite material.

The elastic modulus of type E-glass fibers is 72 GPa, and the elastic modulus of ABS plastic is 2.5 GPa.Next, we need to calculate the volume fraction of each component. If we assume that the composite material is made up of 60% type E-glass fibers and 40% ABS plastic, then the volume fraction of type E-glass fibers is 0.6, and the volume fraction of ABS plastic is 0.4.

Finally, we can use the rule of mixtures to calculate the elastic modulus parallel to the fibers. The rule of mixtures states that the elastic modulus of a composite material is equal to the weighted average of the elastic moduli of the individual components, where the weights are the volume fractions.

Therefore, the elastic modulus parallel to the fibers is given by:

Elastic modulus parallel to fibers = (Volume fraction of type E-glass fibers x Elastic modulus of type E-glass fibers) + (Volume fraction of ABS plastic x Elastic modulus of ABS plastic)

Elastic modulus parallel to fibers = (0.6 x 72 GPa) + (0.4 x 2.5 GPa)

Elastic modulus parallel to fibers = 43.5 GPaSo, the elastic modulus parallel to the fibers of the composite material is 43.5 GPa.

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Answer:

A

Explanation:

The officer would have had permission regardless of anything else, kind of like letting someone into your house.

Answer: B

Explanation: I am 99% sure that is correct I remember doing something very simular

Answer:

a) Mat swum 100 meters.

b)after 4 length , Mat's displacement is zero.

Explanation:

As given, Mat and David are training for the swimming team , and Length of 1 side of the pool is 25 meter.

As swimming pool will be a cube or a cuboid , so it has only 4 sides.

a)

1 length = 23 meter

⇒4 length = 4×25 = 100 meter

So, Mat swam 100 meters.

b)

As after swam 4 lengths of the pool, Mat reaches to its initial position i.e Mat come back to its starting point.

As Displacement is always measures from the starting point.

So, after 4 length , Mat's displacement is zero.

W= F x D indicates the relationship between force, distance and work.

Work is defined as an activity in which one exerts force to do something. Work is also refers to an activity in which a person do something regularly to earn a livelihood. People looking for work, a particular task, duty, or assignment often being a part of some larger activity.

The definition of work in physics shows its relationship to energy. When work is done, energy is transferred from one place to another. Work is also known as the product of the force in the direction in which  displacement is covered and displacement.

So we can conclude that Work is the product of Force and Distance.

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Answer:

23 hours, 56 minutes

The speed of the particle when t = 2 is 17m/s. Hence, the velocity and speed (in m/s) when t = 2 is 17 m/s.

Given that s = f(t) is the equation of motion of a particle that moves along a straight line where s is measured in meters and t in seconds. We are to find the velocity and speed (in m/s) when t = 2.At time t, the velocity of the particle is given by;v(t) = f'(t)

Differentiating s = f(t) partially w.r.t t, we have;f'(t) = ds/dt

Hence;v(t) = ds/dtIf t = 2, then the velocity of the particle is;v(2) = f'(2) = ds/dt ∣t=2

Evaluating the expression of s = f(t) at t = 2, we have;s = f(t) = 5t² - 3t + 2, therefore;s(2) = 5(2)² - 3(2) + 2= 20 - 6 + 2= 16 metersWhen t = 2;

The velocity of the particle, v(2) = ds/dt ∣t=2f'(t) = 10t - 3 = 10(2) - 3= 20 - 3= 17m/s

Therefore, the velocity of the particle when t = 2 is 17m/s.

To find the speed of the particle when t = 2, we can calculate the magnitude of the velocity, i.e,|v(2)| = √v²(2) = √17²= √289= 17m/s

Therefore, the speed of the particle when t = 2 is 17m/s. Hence, the velocity and speed (in m/s) when t = 2 is 17 m/s.

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Answer:

Radioactivity means: the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.

Explanation: I hope this helps! :)

Answer:

sending out harmful radiation caused when the nuclei (=central parts) of atoms are broken up.

"Yes, the electronic crime scene is handled completely differently from a traditional crime scene. The electronic crime scene refers to a crime that has taken place in the digital world.

In contrast, a traditional crime scene refers to a crime that has taken place in the physical world, and it is evident that the two scenarios are handled differently.

An electronic crime scene refers to the area or place where electronic evidence is gathered for use in investigations or legal proceedings. Electronic evidence refers to information or data stored, created, or transmitted in electronic devices, including computers, smartphones, flash drives, and other digital devices. The collection of electronic evidence differs significantly from the collection of traditional evidence. The first step is the preservation of electronic evidence. In a traditional crime scene, it is possible to cordon off the area using yellow tapes, close windows, and take photographs of the scene. However, this is not the case with an electronic crime scene since electronic evidence is intangible. This is why digital forensic investigators begin the evidence preservation process by creating a forensic image of the electronic device under investigation. This is done to prevent data loss or alteration before investigations commence.

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The work done by a constant force acting on an object is equal to the product of the magnitudes of the displacement and the component of the force parallel to that displacement.

Work is a measure of energy transfer, and it is calculated as the product of the force applied on an object and the distance over which the force is applied. However, when the force is not applied in the same direction as the object moves, only the component of the force parallel to the displacement of the object will contribute to the work done.

This principle is known as the work-energy theorem and is commonly used in physics to calculate the amount of work done on an object in a particular situation.

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Answer:

electrons have a negative charge, while protons have a positive charge

Explanation:

In science "opposites attract"

The process that has yielded the most accurate estimate of the age of Earth is measurement of the radioactive decay of elements in minerals.

Option B is correct .

On time scales as long as (or even longer than) the Earth's age, radioactive elements can be used to determine the numerical age of geological materials. Understanding the concept of half-life is necessary for determining a geologic material's age.

Radioactivity in minerals are brought about by the consideration of normally happening radioactive components in the mineral's structure. The mineral's concentration and isotope content determine the degree of radioactivity.

Incomplete question :

The process that has yielded the most accurate estimate of the age of earth is measurement of ?

A. Radiometric dating,

B.  Radioactive decay

C. Radiocarbon dating

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The value of constant c is, c = 9 N/s^2

The force on the particle is, F(x,t) = m(d^2x/dt^2), where m is the mass, and dx/dt and d^2x/dt^2 are the velocity and acceleration of the particle, respectively.

The velocity of the particle is,

v(t) = d/dt (3.0 m + (4.0 m/s)t - ct^2 + (2.0 m/s^3)t^3)

v(t) = 4.0 m/s - 2ct + 6.0t^2

The acceleration of the particle is,

a(t) = d^2/dt^2 (3.0 m + (4.0 m/s)t - ct^2 + (2.0 m/s^3)t^3)

a(t) = -2c + 12.0t

Substituting these expressions for velocity and acceleration into the formula for force,

F(x,t) = m(d^2x/dt^2) = 2.0 kg * (-2c + 12.0t)

At t = 3.0 s, the force on the particle has a magnitude of 36 N and is in the negative direction of the x-axis.

F(x,t) = -36 N

Substituting t = 3.0 s and F(x,t) = -36 N into the equation for force,

-36 N = 2.0 kg * (-2c + 12.0t)

-36 N = -4c + 72 N

36 N = 4c

Therefore, the value of c is,

c = 36 N / 4 = 9 N/s^2

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Answer:

4.3 x 10^16 kg

Explanation:

M = rv^2/G =[90,000 x 5.66^2] / [6.67 x 10^-11]

M = 43,226,446,776,611,694 = 4.3 x 10^16 kg - Ida's mass.

Answer:

Explanation:

the person on top of me was correct 4.3 10^16 i have it in my notes from when i was in school :) so they are right

Well to be honest i probably could answer this if I had the thing to look at to solve it but if not i saw try lucky C. although that doesn't seem like the answer to be honest, either A. or B. seem like reasonable answers to Since D. Does not make sense for this specific question stated, inches for Celsius? Seems a bit off. I say maybe 1. or b. But if your daring choose D. It is really up to you to decide, After all I really do not have anything to base this off of.

To estimate the magnetic field 1 meter from a lightning bolt, we can use Ampere's Law, which relates the magnetic field around a current-carrying conductor to the current.

∮ B · dl = μ₀ * I_enc

B * 2π * r = μ₀ * (10^4 A)

B = (μ₀ * 10^4 A) / (2π * r)

Ampere's Law states that the magnetic field (B) around a long, straight conductor is proportional to the current (I) and inversely proportional to the distance (r) from the conductor: B = (μ₀ * I) / (2π * r)

Where μ₀ is the permeability of free space, approximately equal to 4π × 10^(-7) Tm/A.

Given that the typical current in a lightning bolt is 10^4 A and we want to estimate the magnetic field at a distance of 1 meter (r = 1 m), we can substitute these values into the equation:

B = (4π × 10^(-7) Tm/A * 10^4 A) / (2π * 1 m)

Simplifying the equation, we find:

B ≈ (2 × 10^(-3) T) / (2 m)

B ≈ 10^(-3) T

Therefore, the estimated magnetic field 1 meter from the lightning bolt is approximately 10^(-3) Tesla (T).

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Answer:

a) 20.65kg

b)4.7rad

Explanation:

Answer:

B : It will avoid the distortion from the atmosphere and give scientists more accurate data

Explanation:

The greenhouse gases that humans create augment the natural greenhouse effect, causing the anthropogenic greenhouse effect.

As a result, the planet warms. Both humans and wildlife are significantly impacted by this apparent change in the climate. Anthropogenic greenhouse gases are those released into the atmosphere as a result of human activity and include carbon dioxide, methane, and nitrous oxide. The greenhouse effect, which is caused by these gases trapping heat in the atmosphere and warming the earth, is well-known. Fossil fuel combustion for energy, agriculture, deforestation, and other human activities are the main sources of these emissions. A gas is referred to as a greenhouse gas if it creates the greenhouse effect by both absorbing and emitting thermal infrared radiation.

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Answer:

Sound can't travel in a vaccum.

Explanation:

Sound waves need a medium in order to travel (e.g. air, water, glass)

Since there was a vaccum between the glass the sound couldn't travel since vaccum's contain a very small amount of atoms.

Answer:

....

Explanation:

Answer:

What do you mean.

Explanation:

Answer:

a. 42.92 m/s b 4.4 s c. 915.2 m

Explanation:

Here is the complete question

A volcano erupts, and a chunk of hot magma is launched horizontally with a speed of  ​ 208 m/s, from a height of 94 m. We can ignore air resistance.

What is the vertical velocity of the magma when it hits the ground?

Solution

a. Using v² = u² - 2gy since it is motion under gravity, where u = initial vertical velocity = 0 m/s, g = acceleration due to gravity = -9.8 m/s² and y =  height = 94 m.

Substituting these values into the equation, we have

v² = u² - 2gy

v² = 0² - 2 × (-9.8 m/s²) × 94 m

v² = 1842.4 m²/s²

v = √1842.4 m²/s²

v = 42.92 m/s

b. We also find the time it takes to drop from the height of 94 m from

y = ut - 1/2gt² , u = 0

So, t = √(2y/g)

= √(2 × 94 m ÷ 9.8 m/s²)

= √19.184 s²

= 4.4 s

c. The horizontal distance the chunk of hot magma covers is thus x = Vt where v = horizontal velocity = 208 m/s

x = 208 m/s × 4.4 s = 915.2 m

Answer:

that's wrong its 911

Explanation:

trust me