Suppose a bicyclist rides at a constant velocity of 4.4 m/s up a 10° slope. the total mass of bicycle and rider is 85 kg. neglecting air friction, what is his power output?

When energy is transferred between earth's system, some energy is lost to the surroundings in the form of

-light

-movement

-heat

-vibration

Only a few factors account for the majority of the energy in the Earth system: solar energy, gravity, radioactive decay, and the rotation of the Earth. Many surface processes, including winds, currents, the hydrologic cycle, and the entire climate system, are powered by solar energy. Rivers and other materials flow downhill due to gravity, which also causes tides (due to the Moon's gravitational pull). The Earth's interior is heated by radioactive decay, while air and water currents are influenced by the forces of rotation.

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The cells in the middle latitude atmospheric circulations on earth are called the ferrel, westerlies.

The high latitude is roughly defined as being above 60° magnetic latitude; the middle latitudes are between 50° and 60° magnetic latitude; and everything below 50° magnetic latitude is regarded to be in the low latitude category. However, the precise location of this barrier is unknown.

Wait, what? magnetic horizons? And what is that? In any case, we usually refer to magnetic latitudes rather than geographic latitudes when discussing aurora and the various latitudes. You can claim that you have a better chance of seeing aurora when you are at a high geographic latitude (near the north or south pole). The earth's magnetic poles do not exactly align with the geographic poles, which makes what is generally true about it somewhat misleading.

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From the calculation, the horizontal distance is 310 m.

A projectile has to do with an object that is thrown at an angle. Now we know that the range of the projectile is given by the formula; R = u^2sin2θ/g

We we know that;

g = acceleration due to gravity

θ = angle

u = velocity

R = (60)^2 sin2(30)/10

R = 310 m

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Position is measured in meters (m), so it is a base quantity.

A base or fundamental  quantity is a physical quantity, in which other quantities are derived from.

Example of fundamental quantities;

Derived quantities are those quantities obtained or expressed from fundamental quantities.

Example of derived quantities;

Thus, we can conclude that position measured in meters (m) is a base quantity.

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Stele is a c) carved stone slab used to mark graves or historical events

It is a stone or wooden slab, generally taller than it is wide, erected in the ancient world as a monument. The surface of the stele often has text, ornamentation, or both. Stela, also spelled stele , plural stelae, standing stone slab used in the ancient world primarily as a grave marker but also for dedication, commemoration, and demarcation.

Stelae were created for many reasons. Grave stelae were used for funerary or commemorative purposes. Stelae as slabs of stone would also be used as ancient Greek and Roman government notices or as boundary markers to mark borders or property lines. Stelae were occasionally erected as memorials to battles.

Today, forms of stele are still used, most often in war monuments.

hence , stele used for carved stone slab used to mark graves or to commemorate historical events.

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Answer:

I guess B

Explanation:

Because it stop by it self so that is digital

The deficiency in Ernest Rutherford’s model of the atom about electron orbits was solved by Bohr’s work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder; option A.

Atomic models are those models which were used to describe the structure of atoms by various scientists.

The models of the atom include:

Because of certain deficiencies found in the atomic models by the various scientists, several modifications were made on the atomic model.

The fact that Ernest Rutherford’s model of the atom failed to explain why electrons were not pulled into the atomic nucleus was explained by Bohr’s work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder.

In conclusion, atomic models were used to explain the structure of atoms.

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Answer:

The answer to this is A: Bohr’s work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder.

Explanation:

I just did the quiz

Answer:

[tex]9.5\; {\rm m}[/tex].

Explanation:

Let [tex]u[/tex] and [tex]v[/tex] denote the velocity of this hockey player before and after stopping, respectively. The question states that [tex]u = 9.5\; {\rm m\cdot s^{-1}}[/tex] and implies that [tex]v = 0\; {\rm m\cdot s^{-1}[/tex] since the hockey player has come to a stop.

The duration of this acceleration is [tex]t = 2\; {\rm s}[/tex].  

Since the acceleration of this hockey player was constant, SUVAT equation would apply. In particular, the SUVAT equation [tex]x = (1/2)\, (v + u) \, (t)[/tex] gives the displacement [tex]x[/tex] of this hockey player during that [tex]2\; {\rm s}[/tex] of acceleration:

[tex]\begin{aligned} x &= \frac{1}{2}\, (9.5\; {\rm m\cdot s^{-1}} + 0\; {\rm m\cdot s^{-1}})\, (2\; {\rm s}) = 9.5\; {\rm m} \end{aligned}[/tex].

In other words, this hockey player would have travelled [tex]9.5\; {\rm m}[/tex] while stopping.

Two planets, john and mary, are identical in density and temperature, but mary is larger in size (radius) than john. Mary will have more substantial atmosphere because mary is larger in size .

A substantial atmosphere is one dense enough to significantly affect the surface

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.

The thickness of a planet's atmosphere depends on the planet's gravity and the temperature of the atmosphere. A planet with weaker gravity does not have as strong a hold on the molecules that make up its atmosphere as a planet with stronger gravity.

As the planet grows in size, its mass and therefore gravity increases, allowing it to capture not only the accumulated dust and rocks, but also the gas, which forms an atmosphere.

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The power conducted by the resistor, given that it carries a current of 0.8 A is 19.2 Watts

Mechanical Power can be defined as the rate at which energy is consumed. This is also true for Electrical power, since it gives an expressing of the rate in which Electrical energy is consumed. Electrical power is expressed mathematically as:

Power (P) = voltage (V) × current (I)

P = IV

With the above formula, we can determine the power as illustrated below:

from the question given above, the following data were obtained:

Power (P) = voltage (V) × current (I)

P = IV

P = 24 × 0.8

P = 19.2 watts

Thus, the power conducted by the resistor which carries the current of 0.8 A is 19.2 Watts

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If the partial pressure of nitrogen in the human body is approximately 593 mm hg at sea level, the partial pressure of nitrogen cannot be 760mm Hg in a scuba diver that is at a depth of 30 feet.

Nitrogen narcosis :

The partial pressure of nitrogen increases with pressure, which produces a narcotic effect. Nitrogen narcosis affects both scuba divers and free divers. It causes depression of the central nervous system, which leads to feelings of euphoria, disorientation and irrational behavior. Divers need to consider absorption rates of different gases in order to avoid conditions such as nitrogen narcosis, and decompression sickness.

What is the partial pressure of the nitrogen?

Therefore, at sea level, where atmospheric pressure is known to be 760 mm Hg, the partial pressures of the various gases can be estimated to have partial pressures of approximately 593 mm Hg for nitrogen, 160 mm Hg for oxygen, and 7.6 mm Hg for argon.

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(a) time taken for the car to accelerate from v to 2v = t = [tex]\frac{2V-V}{a}[/tex]

(b) velocity of the car moving at 2t seconds = ΔV = 2at

(a) we know that,

a=[tex]\frac{V_{F}-V_{0} }{t}[/tex]

where, [tex]V_{F}[/tex] is the final velocity

[tex]V_{0}[/tex] is the initial velocity

a = acceleration

t = time

Time taken to accelerate from V to 2V:

t = [tex]\frac{2V-V}{a}[/tex]

(b) We know that,

a=[tex]\frac{V_{F}-V_{0} }{t}[/tex]

where, [tex]V_{F}[/tex] is the final velocity

[tex]V_{0}[/tex] is the initial velocity

a = acceleration

t = time

how fast is the car moving at 2t seconds after starting,

we can represent [tex]V_{F}[/tex] - [tex]V_{0}[/tex] = ΔV

at time = t= 2t, it becomes

a=[tex]\frac{V_{F}-V_{0} }{t}[/tex] = a = ΔV/2t

t= ΔV/2a

ΔV = 2at

Rate of change of velocity with time, both in terms of speed and direction is known as acceleration.

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Answer:

Approximately [tex]17.8\; {\rm L}[/tex].

Explanation:

Consider a straight wire section of length [tex]L[/tex] carrying a current of [tex]I[/tex]. If that wire is placed in a magnetic field of strength [tex]B[/tex] at an angle of [tex]\theta[/tex] relative to the field, the magnitude of the magnetic force on this wire would be:

[tex]F = B\, I\, L\, \sin(\theta)[/tex].

In this question, [tex]\theta = 90^{\circ}[/tex] since the wire is perpendicular to the magnetic field. The magnitude of the magnetic force on this wire would be:

[tex]\begin{aligned}F &= B\, I\, L\, \sin(\theta) \\ &= (0.250\; {\rm T}) \, (15.0\; {\rm A}) \, (4.75\; {\rm m})\, (\sin(90^{\circ}) \\ &\approx 17.8\; {\rm N} \end{aligned}[/tex].

a.  

b.

c.

A grade is the ratio of the vertical rise to horizontal run of a road

The coefficient of static friction is a number which shows the amount of friction between two surfaces.

Since grade = rise/run

= tan θ

So, θ = tan⁻¹(grade)

Since grade for Telegraph hill = 31.5%

= 31.5/100

= 0.315

θ = tan⁻¹(grade)

θ = tan⁻¹(0.315)

θ = 17.48⁰

So, the angle for telegraph hill is 17.48⁰

For no sliding the coefficient of static friction, μ ≥ tanθ

≥ tan17.48⁰

≥ 0.315

So, the coefficient of static friction has to be no less than 0.315

Since grade = rise/run

= tan θ

So, θ = tan⁻¹(grade)

Since grade for Canton Ave. = 37%

= 37/100

= 0.37

θ = tan⁻¹(grade)

θ = tan⁻¹(0.37)

θ = 20.3⁰

So, the angle for Canton Ave. is 20.3⁰

For no sliding the coefficient of static friction, μ ≥ tanθ

≥ tan20.3⁰

≥ 0.37

So, the coefficient of static friction has to be no less than 0.37

Since grade = rise/run

= tan θ

So, θ = tan⁻¹(grade)

Since grade for Bradford Street = 41%

= 41/100

= 0.41

θ = tan⁻¹(grade)

θ = tan⁻¹(0.41)

θ = 22.3⁰

So, the angle for Bradford Street is 22.3⁰

For no sliding the coefficient of static friction, μ ≥ tanθ

≥ tan22.3⁰

≥ 0.41

So, the coefficient of static friction has to be no less than 0.41

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The obsessive disinhibition form of a craving is the result of dysfunction in the    5ht    neurotransmitter.

One of the major neurotransmitters in mammals' nervous systems is 5-HT (also known as serotonin), which is well known for modulating key aspects of daily living like mood, sleep, social behaviors, learning, and appetite (Barnes and Sharp, 1999; Gingrich and Hen, 2001; Canli and Lesch, 2007).

The central and peripheral nervous systems contain a variety of G protein-coupled receptors and ligand-gated ion channels known as 5-HT receptors, 5-hydroxytryptamine receptors, or serotonin receptors. Both excitatory and inhibitory neurotransmission is mediated by them.

5-HT produces only inhibitory effects on excitatory or inhibitory transmission in the bed nucleus of the stria terminalis (BNST) [16] and the periaqueductal grey (PAG).

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Approximately 101 N air is in a column 1-cm2 in cross-section that extends from sea level to the top of the atmosphere

The basic level for determining height and depth on Earth is the sea level. The ocean's surface tends to seek the same level since it is one continuous body of water. However, the sea level is never fully level due to winds, currents, river discharges, and changes in gravity and temperature.

At the equator, the radius of the Earth at sea level is 6378.137 km (3963.191 mi). At the poles, it is 6,356.752 km (3,949.903 km), and on average, it is 6,371.001 km (3,958.756 mi). The elevation of the shoreline—the boundary between the ocean and the land—is referred to as sea level. Land that is higher than this altitude is above sea level, and land that is lower is below sea level.

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Tuba - Alloy

Paper - Polymer

Pot - Ceramics

Alloy : An alloy is a substance which made up of two more than two types of metal.

Ceramics: Articles, figures made up of clay which are hardened by the action of heating.

Polymer: These are the substance composed repeating units of of same chemical units which held together by covalent bonds.

Instead of using natural materials, synthetic products are created using chemicals or synthetic materials. Boots constructed of synthetic materials, such as synthetic rubber, may typically be washed in a machine.

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The potential energy of a 2-μc charge at that point in space is [tex]8*10^{-4}[/tex] joules.

Given,

V=400v, q=2-μc=2*[tex]10^{-6}[/tex],

U(potential energy)=V*q=400*2*[tex]10^{-6}[/tex]= [tex]8*10^{-4}[/tex] joules.

The energy that an item retains due to its position in relation to other objects, internal tensions, electric charge, or other reasons is known as potential energy in physics. The gravitational potential energy of an object is based on its mass and the distance from the centre of mass of another object. Other common types of potential energy include the elastic potential energy of an extended spring and the electric potential energy of an electric charge in an electric field. The joule, denoted by the sign J, is the SI's definition of an energy unit.

The vectors that are described as gradients of a particular scalar function known as potential can be used to represent these forces, also known as conservative forces, at any location in space.

At a certain point in space there is a potential of 400 v. what is the potential energy of a 2-μc charge at that point in space? group of answer choices'

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Electric force is present between proton and electron of an atom.

The attractive force between the electrons and the proton of the nucleus is called the electric force. This force attract electron towards the nucleus so that it can't escape from the atom easily so this force is very important for the atom.

An atom of this element changes when it forms an ionic bond because the number of electron decreases due to losing of electron in order to get stability. We know that ionic bond forms between atoms when electron is lost or gain by the atom.

So we can conclude that electric force is present between proton and electron of an atom.

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Sampling rate

Kilohertz, abbreviated as kHz, is a unit of frequency, or cycles per second.

This statistic in digital audio refers to the number of data chunks required each second to digitally represent an analogue sound. The sample rate or sampling frequency refers to these data units.

The sample rate is the number of sound samples that are taken per second to represent an event digitally while creating audio for computers or telecommunication.

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The focal length (in meters) of a lens whose radius of curvature is 9. 2 m and has a refractive index  1.2 will be 18.4 m

The focal length of a lens is determined when the lens is focused at infinity. Lens focal length tells us the angle of view—how much of the scene will be captured—and the magnification—how large individual elements will be.

Focal length of a lens is the distance between center of lens and focal point . Focal point is a point on principal axis , at which light rays parallel to principal axis meet after refraction through lens or seem to meet after refraction .

The radius of curvature is the radius of sphere formed by the convex or concave mirror. It is also equal to the distance between the pole and center of curvature. The sign convention for focal length and radius of curvature is the same.

focal length = 2 * radius of curvature

given

radius of curvature = 9.2 m

focal length = 2 * 9.2

                    = 18.4 m

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The magnetic flux linked with the conductor will always changes is true for the induced current, if it produces a magnetic field that opposes the change in the existing magnetic field.

To find the answer, we have to know more about the Electromagnetic induction.

Thus, we can conclude that, the magnetic flux linked with the conductor will always changes is true for the induced current, if it produces a magnetic field that opposes the change in the existing magnetic field.

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The wavelength of the radio waves is 3.04 cm.

λf = c

λ = c/f

where,

λ = wavelength

c = speed of light

f = frequency

Given,

f = 98.6 MHz = 98.6 × 10⁶

c = 3 × 10⁸

To find,

λ =?

Put the values in the formula,

λ = c/f

λ = 3 × 10⁸/98.6 × 10⁶

  = 0.0304 × 10²  m

  = 3.04 cm

Therefore, the wavelength of the radio waves is 3.04 cm.

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An experience that forces an individual to confront an existential issue is known as a boundary situation in this type of context.

This type of situation is characterized by negative consequences which the individual tries to escape from in an unfruitful attempt. It usually makes the individual feel like it can't be overcome and is also likely to enter deep into the crisis.

This experience forces an individual to confront an existential issue so as to prevent it from escalating into a very difficult position and to promptly address the situation through employing different types of techniques. This ensures that a reoccurence doesn't come up in this type of situation.

This is therefore the reason why boundary situation was chosen as the most appropriate choice.

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If a disk rolls smoothly down a ramp, the acceleration is related to  its angular acceleration in such a way that It is equal to the product of the angular acceleration to the radius of the disk.

Linear acceleration is defined as the uniform acceleration caused by a moving body in a straight line. There are three equations that are important in linear acceleration depending upon the parameters like initial and final velocity, displacement, time and acceleration.

Angular Acceleration is defined as the time rate of change of angular velocity. It is usually expressed in radians per second per second. Thus, α = d ω/ d t. The angular acceleration is also known as rotational acceleration.

Its equal to the product of the angular acceleration to the radius of the disk.

This equation mean that linear acceleration and angular acceleration are directly proportional. The greater the angular acceleration is, the larger the linear (tangential) acceleration is, and vice versa.

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A Final statement or concluding statement

The aspect of lighting that refers to the relative intensity of illumination is called Lightning Quality.

Based on the luminosity function, luminous intensity is a measure of the  wavelength-weighted power emitted by a light source in a specific direction per unit solid angle.

Photometry is the science of measuring visible light as it is experienced by human eyes.

The human eye can only sense light in the visible range and is sensitive to different wavelengths of light within that spectrum.

The eye is most sensitive to greenish-yellow light at 555 nm when it is acclimated for bright settings (photopic  vision).

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The extension of the spring is 4.83 m, if work done is 35 Newton and spring constant is 3 k N/m.

The spring constant, k, is a measure of the stiffness of the spring. it's far one of a kind for unique springs and materials. the larger the spring regular, the stiffer the spring and the greater.

Spring constant of 3 k N/m,

The amount of work done in extending is 35 N

WORK DONE by spring force = 1/2 k X²

                                                 ⇒0.5 * 3 * X²

                                   35 N = 0.5 * 3 * X²

                                 X² = 35/1.5

                                  x = [tex]\sqrt{23.33}[/tex]

                                     X = 4.83 m

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The extension of the spring is can be found out by using the Work Done due to extension in Spring Constant K. The extension in the spring is 4.83m.

The spring constant, k, is a measure of the stiffness of the spring. It is for springs and materials which measures the ratio of force that affects the spring and the displacement caused by the force action.

Spring constant depends on the stiffness of the spring, wire thickness, number of turns in wound coil, length of spring and diameter of the coil.

Given:

Spring constant = 3000 N/m

Work Done in extension= 35 N

Let the extension in spring by x.

∴ Work Done by spring force = 1/2 kx²

                        Work done   = 0.5 × 3 × x²

    ⇒                                 35 N = 0.5 × 3 × x²

    ⇒                                      x² = 35/1.5

     ⇒                                         x = 4.83m

Hence, the extension of spring is 4.83m.

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A Final statement or concluding statement

When constructing a climograph one needs to know the annual average temperature and wind speed.

A climograph is a graph that depicts an area's average (mean) precipitation and temperature.

It is used to compare the climate of various locations.

Climographs are made to compare climates in various locations.

Climographs simplify a large amount of numerical data into a simple  depiction of bars and lines.

Climographs are useful for observing trends in climate and comparing  climates in different locations since they are so basic.

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