A 20 Kg bike accelerates at 10 m/s^2. With what force was the person pedaling

Answer: Through Photosynthesis

Explanation:

Answer:

Option 3

Explanation:

Carbon is cycled into the hydrosphere through the diffusion from the atmosphere.

Further explaining this :

Some of the carbon dioxide molecules in the rain react with the water droplets to form carbonic acid that falls with the rain. The carbonic acid that falls to the surface of the Earth dissolves rocks by the process of chemical weathering, where it releases calcium, magnesium, potassium or sodium ions. These ions are carried by rivers to the ocean. The carbonic acid that falls directly into surface water bodies reacts with the water to form bicarbonate ions.

Plasmons are collective oscillations of electrons that can be found in conductive materials. They can be excited by electromagnetic radiation and detected through changes in optical properties.

Plasmons are a type of collective excitation of electrons that occur in conductive materials. They can be found in both the bulk and surface of conductive materials as well as in the vicinity of conducting particles. Plasmons play a significant role in various areas of physics such as optics, nanotechnology, and condensed matter physics.

Plasmons can be excited by electromagnetic radiation, such as light, and can be detected by measuring changes in the material's optical properties. The interaction of plasmons with light can be used to enhance the sensitivity and resolution of various optical spectroscopy techniques, making them useful tools in materials science research.


Plasmons are collective oscillations of electrons that occur in conductive materials and can be found in the bulk and surface of these materials, as well as in the vicinity of conducting particles. Plasmons can be excited by electromagnetic radiation, such as light, and can be detected by measuring changes in the material's optical properties. The interaction of plasmons with light can be used to enhance the sensitivity and resolution of various optical spectroscopy techniques, making them useful tools in materials science research. Plasmons have applications in areas such as optics, nanotechnology, and condensed matter physics.


In summary, plasmons are collective oscillations of electrons that can be found in conductive materials. They can be excited by electromagnetic radiation and detected through changes in optical properties. Plasmons have important applications in fields such as materials science, optics, and nanotechnology.

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The illuminance on the object is approximately 23.52 lux.

The illuminance on an object can be calculated using the formula:

Illuminance = Luminous Flux / Area

In this case, the luminous flux is given as 665 lumens. To find the illuminance, we need to determine the area.

Since the object is 1.50 m away from the light source, we can imagine a sphere centered on the light source with a radius of 1.50 m. The surface area of this sphere can be calculated using the formula:

Surface Area = 4πr²

Plugging in the value of the radius (1.50 m) into the formula, we get:

Surface Area = 4π(1.50)² = 4π(2.25) ≈ 28.27 m²

Now we can calculate the illuminance:

Illuminance = Luminous Flux / Area = 665 lumens / 28.27 m² ≈ 23.52 lux

So, the illuminance on the object that is 1.50 m away from the light source with a luminous flux of 665 lumens is approximately 23.52 lux.

The illuminance on the object is approximately 23.52 lux.

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Answer:

Data from a cross-sectional study or survey might need to incorporate weights or design effects in the analysis.The analysis plan should specify which variables are most

Explanation:

Explanation:

For example, scientists on a ship may examine SONAR data collected in real-time to determine the shape of the seafloor (Fig 2.7 A). ... Biologists might graph the number of box jellyfish over time and compare these data to the phases of the moon to look for patterns (Fig 2.7 B).

The increase in internal energy of the tie and spike is approximately 1.12 Joules.

The initial kinetic energy of the spike is:

K_i = (1/2) * m * v^2

K_i = (1/2) * 0.60 kg * (1.8 m/s)^2

K_i = 1.94 J

The amount of kinetic energy that is absorbed as internal energy is:

K_absorbed = 0.578 * K_i

K_absorbed = 0.578 * 1.94 J

K_absorbed = 1.12 J

Thus,the value is 1.12 Joules.

Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.

Kinetic energy is the energy of motion, observable as the movement of an object or subatomic particle. Every moving object and particle have kinetic energy. A person walking, a soaring baseball, a crumb falling from a table and a charged particle in an electric field are all examples of kinetic energy at work.

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The customer's maximum gain potential is $7,300.

A put option is a contract that gives the owner the right, but not the obligation, to sell a specified amount of an underlying asset, at a specified price within a specified time frame.

Here, the customer is long 1 October 75 put at 2.

In this case, the maximum gain potential is calculated using the following formula;

Max gain potential = Strike price – Premium paid

Max gain potential = $75 - $2

Max gain potential = $73

Therefore, the customer's maximum gain potential is $7,300.

Option B) $7,300

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The force exerted on the hockey by the stick is -56.7 N.

Force is the product of mass and acceleration.

To calculate the force on the hockey, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the force on the hockey is -56.7 N.

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Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

In the given scenario, a passenger jumps from a commercial airliner traveling at 300 m/s. Initially at an altitude of 2500 m, the passenger falls to 2000 m and then continues descending vertically at a speed of 80 m/s.

The information provided allows us to analyze the passenger's motion and understand the key factors involved in their descent.

When the passenger jumps from the plane, they have the same horizontal velocity as the plane, which is 300 m/s. However, in the vertical direction, they experience the force of gravity acting upon them. As a result, they start to fall downwards. Initially, the passenger's velocity is zero in the vertical direction, but as they fall, their speed increases due to the acceleration caused by gravity.

When the passenger reaches an altitude of 2000 m, they are descending vertically at a speed of 80 m/s. This indicates that the passenger has reached their terminal velocity, where the force of gravity pulling them downward is balanced by the air resistance acting in the opposite direction. At terminal velocity, the passenger continues to fall at a constant speed, without any further acceleration.

It's important to note that this analysis assumes no other external forces or factors affecting the passenger's motion, such as wind or changes in air density. Additionally, real-life scenarios involving jumps from aircraft are dangerous and strictly prohibited due to the risks involved.

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a. The time for it to come to rest is (-1.5 rad/s)/α.

b. Its angular acceleration is -0.000356 rad/s²

c. The time required for the first 20 revolutions is approximately 17.1 seconds.

Radian per second is used to measure angular speed. Both angular velocity and angular speed are represented using the same formula. Unlike angular speed, which simply describes magnitude, angular velocity is a vector term that expresses both direction and magnitude.

(a) The final angular speed of the flywheel is 0, and the initial angular speed is 1.5 rad/s. Therefore, the change in angular speed is Δω = 0 - 1.5 = -1.5 rad/s. Let α be the constant angular acceleration. We can use the equation:

Δω = αΔt

Solving for Δt, we get:

Δt = Δω/α = (-1.5 rad/s)/α

(b) To find the angular acceleration α, we can use the equation:

ωf² = ωi² + 2αΔθ

where ωf is the final angular velocity, ωi is the initial angular velocity, Δθ is the change in angle (in radians), and α is the angular acceleration.

Since the flywheel turns through 40 revolutions, or 80π radians, we have:

ωf² = (1.5 rad/s)² + 2α(80π rad)

At the final angular velocity, ωf = 0, so we can simplify to:

0 = (1.5 rad/s)² + 2α(80π rad)

Solving for α, we get:

α = -(1.5 rad/s)² / (2(80π rad)) ≈ -0.000356 rad/s²

(c) To find the time required for the first 20 revolutions, we can use the equation:

Δθ = ωiΔt + 1/2α(Δt)²

where Δθ is the angle turned during the time interval, ωi is the initial angular velocity, and α is the angular acceleration. We want to find Δt for Δθ = 20 revolutions, or 40π radians.

Using the values of ωi and α from parts (a) and (b), we get:

40π rad = (1.5 rad/s)Δt + 1/2(-0.000356 rad/s²)(Δt)²

Simplifying and solving for Δt, we get:

Δt ≈ 17.1 s

Therefore, the time required for the first 20 revolutions is approximately 17.1 seconds.

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An electric current produces a (c) magnetic field.

When an electric current flows through a conductor, it generates a magnetic field around the conductor. This relationship between electric current and magnetic fields is described by Ampere's law and is the basis for electromagnetism.

current is the rate at which the charge pases through an electric conductor in a circuit.

formula: I = Q/t

 where I is current, Q is charge and t is the time period.

An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is defined as the net rate of flow of electric charge through a surface.[1]: 2 [2]: 622  The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor.

In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes. In an electrolyte the charge carriers are ions, while in plasma, an ionized gas, they are ions and electrons.

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The driver of the fire truck hears a frequency of approximately 475.8 Hz. The frequency that the driver of the fire truck hears can be found using the formula:
f' = (v + vd) / (v + vs) * f

where f is the frequency of the siren, v is the speed of sound in air, vs is the speed of the fire truck, and vd is the speed of the observer (in this case, the driver) relative to the air.
Plugging in the given values, we get:
f' = (343 + 31) / (343 + 0) * 439
f' = 475.8 Hz

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The  kinetic energy of the ejected electron is approximately 2.72 × 10^-19 joules.

To calculate  the kinetic energy of the ejected electron, we need to use the energy of the incident ultraviolet (UV) photon and the work function of the material from which the electron is ejected.

The energy of a UV photon can be calculated using the equation:

E = hc/λ

where h is Planck's constant, c is the speed of light in vacuum, and λ is the wavelength of the photon.

Substituting the given values, we have:

E = (6.626 × 10^-34 J·s) * (3.00 × 10^8 m/s) / (200 × 10^-9 m) = 9.94 × 10^-19 J

Assuming that the electron is ejected from a metal surface, the work function (φ) of the metal is the minimum energy required to eject an electron from its surface. The kinetic energy of the ejected electron (K) can be calculated by subtracting the work function from the energy of the incident photon:

K = E - φ

The work function varies for different metals, but assuming a typical value of around 4.5 electron volts (eV), we have:

φ = 4.5 eV * (1.602 × 10^-19 J/eV) = 7.22 × 10^-19 J

Substituting the values of E and φ, we get:

K = 9.94 × 10^-19 J - 7.22 × 10^-19 J = 2.72 × 10^-19 J

Therefore, the kinetic energy of the ejected electron is approximately 2.72 × 10^-19 joules.

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“The electric flux through a closed surface is equal to the net charge inside the surface divided by the physical constant. This law is a fundamental principle in electrostatics and is expressed mathematically as E.ds = Q/ε0.

Gauss’s Law for electric fields is a fundamental principle in physics, specifically in the study of electrostatics. The law describes the relationship between the electric flux and the distribution of electric charges in a given space. Simply put, it states that the electric flux through a closed surface is proportional to the total amount of electric charges inside the surface. In mathematical terms, the statement of Gauss’s Law for electric fields is as follows: E.ds = Q/ε0Here, E.ds represents the electric flux through a closed surface, Q represents the total electric charge enclosed within the surface, and ε0 is the physical constant known as the permittivity of free space. This equation can be used to calculate the electric field created by a given charge distribution, provided that the electric flux through a closed surface around the distribution is known.

Gauss’s Law for electric fields states that the electric flux through a closed surface is proportional to the net electric charge enclosed within the surface. This law is a fundamental principle in electrostatics and is expressed mathematically as E.ds = Q/ε0.

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Answer:

It is destroyed in subduction zones. A Geologic process in which a tectonic plate made of dense lithospheric material melts or falls below a plate made of less-dense lithosphere at a convergent plate boundary

Explanation:

Hope this helps (:

It's important to note that the number of components into which the beam is split depends on the number of possible spin states for the electron(s) in the atom being tested. the correct option is (a) 2

In a Stern-Gerlach experiment, a beam of atoms is passed through a magnetic field gradient, which causes the beam to split into multiple components based on the orientation of the atom's spin. In the case of an atom with a single 2p electron, the electron can have one of two possible spin states: up or down. Therefore, the beam would be split into two components corresponding to the two spin states of the electron.

Therefore, the correct answer to this question is (a) 2. It's important to note that the number of components into which the beam is split depends on the number of possible spin states for the electron(s) in the atom being tested. For example, an atom with two 2p electrons would have four possible spin states (up-up, up-down, down-up, and down-down) and would be split into four components.

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Answer:

Thermal physics

Explanation:

Because it uses temperature

Answer:

In my opinion both are easier if you'll work hard on it...

The heaviest elements not appreciably larger than the lightest elements are the transition metals. These metals include elements like iron, copper, and gold. Although they are heavier than the lightest elements like hydrogen and helium, their size is not significantly larger.

This is because the size of an atom is determined by the number of protons in its nucleus and the number of electrons in its outermost shell. While the transition metals have more protons than the lightest elements, their outermost shells are also more tightly bound to the nucleus, making their size relatively small.

The size of an atom is also affected by the electron configuration, which determines the size of the electron cloud. The transition metals have a relatively stable electron configuration, which contributes to their small size. Additionally, the presence of multiple energy levels in the electron cloud of the transition metals means that they can have a range of sizes, with some being slightly larger than others.

In summary, the heaviest elements not appreciably larger than the lightest elements are the transition metals, which have a relatively small size due to the number of protons in their nucleus, the stability of their electron configuration, and the presence of multiple energy levels in their electron cloud.

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According to conservation of energy, the energy of interacting bodies in a closed system remains constant. The total energy of an isolated system remains constant; it is said to be conserved over a period of time.

Elastic energy is the mechanical implicit energy stored in the configuration of a material or physical system as it's subjected to elastic distortion by work performed upon it. Elastic energy occurs when objects are impermanently compressed, stretched or generally misshaped in any manner.

The mechanical energy is never lost forever , rather it gets converted to thermal energy because of the friction .

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Answer:

ammeter

Explanation:

hope this helps

When monochromatic red light is incident on a double slit and an interference pattern is formed on a screen, the fringe pattern is determined by the wavelength of the light. The interference pattern arises due to the superposition of the light waves from the two slits, resulting in constructive and destructive interference.

Now, if the red light source is replaced by a blue light source, which has a shorter wavelength compared to red light, several changes can be expected in the interference pattern:

1. Fringe Spacing:

The fringe spacing, or the distance between adjacent bright or dark fringes, is determined by the wavelength of the light. Blue light has a shorter wavelength compared to red light, so the fringe spacing in the interference pattern produced by the blue light would be smaller than that produced by the red light. The fringes would appear closer together on the screen.

2. Fringe Intensity:

The intensity of the fringes in the interference pattern depends on the degree of constructive or destructive interference. Blue light with its shorter wavelength would result in a different pattern of constructive and destructive interference compared to red light. The intensity of the fringes may be different in the blue light interference pattern, with some fringes appearing brighter or darker than in the red light interference pattern.

3. Position of Central Maximum:

The central maximum in the interference pattern, which corresponds to the maximum intensity, would remain at the same position on the screen. The central maximum is not affected by the change in the color of light.

In summary, replacing the red light source with a blue light source would result in changes to the fringe spacing, fringe intensity, and possibly the overall appearance of the interference pattern. The fringes would be closer together, and the pattern may exhibit different brightness levels compared to the red light interference pattern. However, the position of the central maximum would remain the same.

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The lowest incident kinetic energy is 50.0000125 ev

The energy an object has as a result of motion is known as kinetic energy.

A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed. Kinetic energy is the type of energy that is transferred and is dependent on the mass and speed attained.

The transmission probability of a particle in finite square well potential is

T = 1 / 1 + \(v_{0}\)² / 4 E( \(v_{0}\) - E) sin²βL

E is incident KE

And β = √2m ( E - \(v_{0}\) ) / h²

there is no reflection therefore R = 0 and T = 1

1 / 1 + \(v_{0}\)² / 4 E( \(v_{0}\) - E) sin²βL = 1

[ 1 +  \(v_{0}\)² / 4 E( \(v_{0}\) - E) sin²βL ] = 1

\(v_{0}\)² / 4 E( \(v_{0}\) - E) sin² (βL) = 0

sin² (βL) = 0

sin² (βL) = sin²(nπ)

For lowest KE n =1

βL = π

β = π / L

√2m ( E - \(v_{0}\) ) / h² = π / L

squaring both sides

2m ( E - \(v_{0}\) ) / h² = π² / L²

( E) = π² h² / 2mL² + \(v_{0}\)

Given width L = 2nm

π² h² / 2mL²

= π² × (1.05 × 10 -34 js )² / 2 × 1.67 × 10 -27 kg × ( 2 × 10-9 m)²

= 0.82 × 10 -23 j

since 1ev = 1.6 × 10 -19 j

π² h² / 2mL²

= 0.82 × 10 -23 / 1.6 × 10 -19

= 0.15 × 10 -4 ev

so incident kinetic energy is

( E) = π² h² / 2 mL² + \(v_{0}\)

= 0.15 × 10 -4 ev + 50 ev

= 50.0000125 ev >  \(v_{0}\)

you can't ignore this energy at quantum level.

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Answer:

k₁ = 2πf₁/v

k₂ = 2πf₂/v

Explanation:

Since the de Broglie relation λ=h/p (1 ) and momentum, p =kℏ (2)

From (1) p = h/λ = kℏ

So,  h/λ = kℏ

Hence, k = h/ℏλ  since ℏ = h/2π and wavelength, λ = v/f, substituting these two into k, we have

k = h/[(h/2π)(v/f)]

k = 2πf/v where k = wave number, f = frequency of wave and v = velocity of wave.

Now, for the first wave number k₁, k₁ = 2πf₁/v

for the second wave number k₂, k₂ = 2πf₂/v

Answer:

4. atmosphere and geosphere

5. atmosphere and hydrosphere

6. hydrosphere and geosphere (? not sure about this one sorry)

7. hydrosphere and geosphere

8. biosphere and geosphere

Frequency and nzl (number of zero crossings per unit length) are inversely proportional to each other according to the formula nzl = vf, where v is the velocity of the wave and f is the frequency.

The formula for nzl (refractive index minus one) is,

nzl = (c/vl) - 1

where c is the speed of light in a vacuum, and vl is the speed of light in the medium.

Frequency is not directly related to nzl in this formula. However, the refractive index (n) of a medium can depend on frequency. This is known as dispersion, and it means that different frequencies of light may experience different refractive indices and therefore different nzl values in a given medium. In other words, the nzl value can vary depending on the frequency of the light passing through the medium.

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Answer:

"transverse waves" such as electromagnetic waves

In something like a sound wave, the particles must vibrate longitudinally for the wave to progress thru the medium

false

can u make me brainleist

Answer:

keep your finger near the mouse and between clicks don't take your finger very far away from your mouse or even keep your finger on the mouse click lightly

Answer: One way to improve your clicks per second (CPS) is to practice regularly. You can also try using a different mouse or adjusting your grip to find what works best for you. Additionally, focusing on improving your hand-eye coordination and reaction time can also help increase your CPS. <3

Answer:

A. The one with the greatest mass and fastest speed

Explanation:

Newton's Second Law of Motion

So, as per the equation the force required to be applied is directly proportional to the change in momentum.

Therefore, we can understand two things :-

The correct option is A.

Answer:

b. compensate for changes in the Earth's atmosphere and achieve better resolution.

Explanation: