Comment on the speed changes as it follows its parabolic arc. do they make sense physically?

A short to voltage failure would occur if the copper conductors of two insulated wires came into contact and melted together.

The difference in electric potential between two points, also known as voltage, electric potential difference, electric pressure, or electric tension, is measured as the amount of work required to move a test charge per unit of energy between the two sites.

The formula reads voltage = current x resistance, or V = A x, or volts = amps x ohms.

Electrical services are categorized:

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An inert atmosphere was obtained by adding nitrogen in a room that measures 11.0 ft x 11.0 ft and has a 8.00 ft ceiling. The number of liters of nitrogen that were used to fill the room is : (D) 2.74 x 104  Liters.

The number of liters of nitrogen that were used to fill the room

= Volume of room in cm3 x 1 Liters / 103 cm3

Volume of room in cm3 = 11.0 ft x  (30.48 cm / 1 ft) x  11.0 ft x  (30.48 cm / 1 ft) x 8.00 ft x (30.48 cm / 1 ft)

= 27410707.501 cm3  or 2.741 x 107 cm3

And since  1 Litres = 103 cm3

Volume of room in cm3  = 2.74 x 107 cm3

Now putting these values in the above equation we get

So, the number of liters of nitrogen that were used to fill the room

= Volume of room in cm3 x 1 Liters / 103 cm3

= 2.74 x 107 cm3  x 1 Liters / 103 cm3

= 2.741 x 104  Liters

Thus, an inert atmosphere was obtained by adding nitrogen in a room that measures 11.0 ft x 11.0 ft and has a 8.00 ft ceiling. The number of liters of nitrogen that were used to fill the room is 2.74 x 104  Liters.

The area of the walls is 2 ,160 ft ²

we know that,

The area of the walls is =  perimeter of the conference room *   the height of the ceiling

So,

A = 2 (40 + 50 ) (12)

A = 2 , 160ft²

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The acceleration of this item will remain constant if I double the force and double the mass.

The rate at which a moving object's speed and direction change over time. When something moves faster or slower, it is considered to be accelerating. Motion on a circle accelerates even while the speed is constant because the direction is always changing.

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Left of z = 0.49 and right of z = 2.05, the area underneath the standard normal curve is equal to 0.7081.

The horizontal axis is approached by the standard normal bend as it extends indefinitely both in directions without ever being touched by it. The center of the bell-shaped, z=0 standard normal curve. Between z=3 and z=3, almost the entire area underneath the standard normal curve is located.

Use the normal distribution's standard form to calculate probability. Since the standard normal distribution is indeed a probability distribution, the probability that a variable will take on a range of values is indicated by area of the curve between two points. 100% or 1 is the total area beneath the curve.

the region to the left of the standard normal curve,

z=0.49

To the right of,

z = 2.05

So,

The area will be:

= P[z < 0.49] + P[ z >2.05]

= P[z < 0.49] + 1 -  P[ z < 2.05]

= .6879 + 1 - .9798

= 0.7081

Left of z = 0.49 and right of z = 2.05, the area underneath the standard normal curve is equal to 0.7081.

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I understand that the question you are looking for is:

Find the area under the standard normal curve to the left of z = 0.49 and to the right of z = 2.05. Round your answer to four decimal places, if necessary.

The density of galena is 7.56 g/cm³.

We need to know about the density to solve this problem. Density can be described as how much the mass is in a volume unit. It can be written

ρ = m / V

where ρ is density, m is mass and V volume

From the question above, we know that

m = 12.4 g

V = 1.64 cm³

By substituting the given parameter, we can calculate the density

ρ = m / V

ρ = 12.4 / 1.64

ρ = 7.56 g/cm³

Hence, the density of galena is 7.56 g/cm³.

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The race car that is moving at 40.0 m/s around a circular racetrack of radius 265 m has a period of motion of 41.63 s

To solve this tangential velocity problem the formula and the procedure we will use is:

v = (2 * π * r) / T

Where:

Information about the problem:

Applying the tangential velocity formula and isolating the period, we get:

v = (2 * π * r)/ T

T = (2 * π * r)/ v

T = (2 * 3.1416* 265 m) / 40.0 m/s

T = (1665.04 m) / 40.0 m/s

T = 41.63 s

In physics is the length of arc traveled in each unit of time in uniform circular motion. It is expressed in units of distance per time (m/s), (km/h).

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The average speed of the dog is  6.8 m/s  while the average velocity is 6.8 m/s halfway to the starting point.

The speed of a moving object is the ratio of the distance covered by the object and the time taken to cover the distance. The average speed is the ratio of the total distance traveled and the total time taken.

Velocity, on the other hand, refers to the speed in a particular direction. In other words, velocity is a vector quantity while speed is a scalar quantity.

In this case:

Total distance covered = 50 + 25

                                       = 75 meters

Total time taken = 7.2 + 3.85

                           = 11.05 seconds

Average speed = 75/11.05

                          = 6.8 m/s

Average velocity = 6.8 m/s halfway

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Volume occupied by the drops is 0.46 cm^3

Given:

no. of drops of oil = 20 drops

mass of 20 drops = 407.7 mg

Density of 20 drops = 0.875g/cm3

To Find:

Volume occupied by the drops

Solution:

Density is define as mass per unit volume

by using the formula we can find volume

Density = mass/volume

0.875 = 0.4077 gram/ volume

Volume = 0.4077 gram/0.875 = 0.46 cm^3

Hence, volume occupied by 20 oil drops is

0.46 cm^3

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The compound f is increasing at the rate of 0.46 mol per second.

The number of moles of a compound is defined as the mass of the compound divided by its molecular mass. The SI unit of the number of moles is mol. The number of moles is represented by the symbol 'n'.

[tex]Number \: of \: moles = \frac{ Mass}{ Molecular \: mass}[/tex]

[tex]n = \frac{m}{M} [/tex]

The balanced equation for the reaction is,

2 d (g) + 3 e (g) + f (g) => 2 g (g) + h (g)

In the reaction, 3 moles of compound e are consumed to give 2 moles of compound g.

For 1 mole of compound e consumed to form =

[tex] \frac{2}{3} \: moles \: of \: g \: formed.[/tex]

The compound e is decreasing at the of = 0.69 mol/s

So, the rate at which g is increasing is,

[tex] = \frac{2}{3} \times 0.69[/tex]

[tex]= 0.46 \: mol/ s[/tex]

Therefore, compound f is increasing at the rate of 0.46 mol per second.

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sine wave or sinusoidal wave -

sine wave can be described as a geometric waveform that oscillates periodically.

It retains its wave shape when added to the another sine wave of the same frequency.

It is a continuous wave.

the general form of sine wave is

y = asin(bx)

where

amplitude is the maximum displacement from its mean position to extreme position.

Periodicity is a repeating continuous pattern which determine its wavelength and frequency.

Frequency of sine wave.

1kHz that is sine wave goes through thousand complete cycle in one second.

Speed of sine wave.

Speed = frequency x wavelength

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A father and his young daughter are ice skating. According to it, the daughter has greater speed.

According to Newton’s third law, when two bodies come into contact, they exert forces on one another that are equal in size and directed in the opposite direction. The law of action and reaction is another name for the third law.

This law applies to bodies in uniform or rapid motion and is crucial for addressing problems of static equilibrium, where all forces are in balance. The forces it discusses are actual phenomena, not just accounting tricks.

If there is a net force operating on a body, it moves faster in line with the second rule.

If there is no net force acting on the body, either because there are no forces at all or because all forces are precisely balanced by opposing forces, the body does not accelerate and is said to be in equilibrium.

On the other hand, it can be assumed that a body that appears to be moving slowly has no net force acting on it.

So going according to it, the daughter has greater speed.

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Using the Newton's second law the net force of the runner is 131.25 N

To solve this exercise the formula for net force and the formula for uniformly varied rectilinear motion (UVRM) to be applied are:

Where:

Information about the problem:

Applying the formula for UVRM we can calculate the acceleration of the runner:

a = (vf - vi) /t

a = (7 m/s - 0 m/s) / 4s

a = 7 m/s / 4s

a = 1.75 m/s²

With the acceleration we can apply the net force formula and get:

F = m * a

F = 75 kg * 1.75 m/s²

F = 131.25 N

It is the physical magnitude that expresses the effort necessary to move the mass of one kilogram with an acceleration of one meter per second squared, this is expressed in units of the international system in Newton.

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The strength of this electric field is 10.64×10⁸ N/C.

Electric field strength is a quantitative expression of the intensity at a particular location of a electric field.

It is a vector quantity.

Electrostatic force on the  charge :

[tex]F_{e} = mg[/tex]          (equation1).

m = mass

g = gravity

electrostatic force of a charge on an electric field :

[tex]F_{e} = Eq[/tex]           (equation2).

E = magnitude of electric field

q = charge

using equation 1 and 2 we get

Eq = mg

m = 1.67×10⁻²⁷ kg

g = 10.2 m/s²

q = 1.6 ×10⁻¹⁹

E = mg/q

     =  1.67×10⁻²⁷ kg ×10.2 m/s² /  1.6 ×10⁻¹⁹ C

     E= 10.64×10⁸ N/C

The strength of this electric field is 10.64×10⁸ N/C.

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A and B are orthogonal vectors, so projab=0 and projab = b

If the vectors a and b are present in, then b is projected onto an as

[tex]proj_{a} b[/tex] = [tex]\frac{a.b}{a^{2} }[/tex]a.

​Suppose a and b are orthogonal vectors. Then  and

[tex]proj_{a} b[/tex][tex]=\frac{a.b}{a^{2} }=0[/tex]

Suppose a and b are parallel vectors. Then a scaler c exists such that b=cx and

[tex]proj_{a} b=[/tex][tex]=\frac{a.b}{a^{2} }=c\frac{a.b}{a^{2} } a=ca=b[/tex]

[tex]proj_{a} b=0\\proj_{a} b=b[/tex]

The term "orthogonal unit vectors" refers to a collection of vectors that are mutually perpendicular to one another, that is, they intersect at an angle of 90° with a magnitude of one unit. Since Cos90 is zero, the dot product of an orthogonal vector is always zero.

Two orthogonal vectors have a zero dot product. The zero dot product of the two column matrices that represent them. It only matters in relation to orientation. In the case of orthogonal vectors, the dot product is zero.

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A high-mass star has layers that are arranged in order of b. Temperature for fusion.

The temperature at which a substance transforms from a solid to a liquid is known as its melting point. The solid and liquid phases are in equilibrium at the melting point. Pressure affects a substance's melting point, which is typically reported at a standard pressure such 1 atmosphere or 100 kPa. There are two main categories of fusion reactions: those that maintain the ratio of protons to neutrons and those that convert protons to neutrons. The solid-liquid and liquid-to-gas transitions are connected with the typical heats of fusion and vaporization, respectively, for each substance.

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Answer:

Scissors

Tap

Spanner

Explanation:

The apparent visual magnitude difference between the Star A is higher.

A star's apparent magnitude, or m, indicates how brilliant the star appears when it is far away from Earth. The scale is logarithmic and "backwards." Stars with larger magnitudes are also fainter stars. Be aware that brightness is another word for the flux of light that is coming at us and is measured in Watts per square meter.

The brightness of a star or other celestial object as seen from Earth is expressed in terms of apparent magnitude. The apparent magnitude of an object is determined by its inherent luminosity, its distance from Earth, and any light extinction brought on by interstellar dust in the path of the observer's line of sight.

The brightness of a star or other celestial object perceived from Earth is measured in apparent magnitude (m). The apparent magnitude of an object is determined by its inherent luminosity, its distance from Earth, and any light extinction brought on by interstellar dust in the path of the observer's line of sight.

The apparent visual magnitude difference between the Star A is higher.

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Answer:

Fail-close

Explanation:

A failed open switch is a switching device (be it mechanical, relay, semiconductor) that has lost it's switching capabilities (it's defective) and the switched contacts are now constantly open (disconnected) regardless of the control signal to the switch.

Similarly a failed closed switch is the same just with the contacts connected through.

5 seconds is the additional time.

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The answer is 4.96 * 10⁻¹⁹ kg m / s

Proton is an elementary particle that is identical to the nucleus of the hydrogen atom, along with the neutron is a constituent of all other atomic nuclei, that carries a positive charge numerically equal to the charge of an electron, and has a mass of 1.673 × 10−27 kilogram

nonrelativistic equation for the magnitude of the momentum of the proton is p = m * v

Then: p = m * v

Then Let's calculate its value

            After that p = 1.67 * 10⁻²⁷ * 0.99 * 3 * 10⁸

            Now, p = 4.96 * 10⁻¹⁹ kg m / s

hence the answer is 4.96 * 10⁻¹⁹ kg m / s

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In the photoelectric effect, a beam of light impinges on metal, and it is observed that electrons are ejected from the metal in greater numbers as the intensity of light increases.

In physics, the photoelectric effect refers to a phenomenon in which the emission of charged particles takes place from a material or substance after absorbing electromagnetic radiation.

When light hits the surface of the material then electrons are released known as photoelectrons.

This phenomenon better explains the quantum nature of electrons and light.

Moreover, the study of the dual nature of wave particles has further expanded the scope, investigation, and understanding of the matter.

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The predominant protonation state and charge of the His and Asp side chain will be predominantly protonated and positively charged if both its p[tex]K_{a}[/tex] values is more than 5.

We know that,

pH = p[tex]K_{a}[/tex] + ( log [ [tex]A^{-1}[/tex] ] / [ HA ] )

where,

[ [tex]A^{-1}[/tex] ] represents deprotonated form

[ HA ] represents protonated form

Consider pH = p[tex]K_{a}[/tex]

In this case,

[ [tex]A^{-1}[/tex] ] / [ HA ] = 1

This means that protonated and deprotonated forms are equal.

This also means that as pH decreases, the acid's state will be predominantly protonated and its charge will be positive.

The relationship between pH and p[tex]K_{a}[/tex] shown above is known as Henderson-Hasselbach equation

Therefore, the predominant protonation state and charge of the His and Asp side chain will be predominantly protonated and positively charged if both its p[tex]K_{a}[/tex] values is more than 5.

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The correct answer for percentage of the compound is left after 3.32 minutes is 55 % .

We use the formula A(t) = A0e-kt for decomposition, where A0 is the initial amount of decomposed substance at t = 0, k is the decay constant, t is the time elapsed, and A(t) is the amount after time t.

The percentage of decomposed compound left after a time t is, [A(t)], divided the the initial amount, [A0], time 100, or A/A0*100:

A = A0e-kt

A/A0 = e^- 0.00586t, [k = 0.00299, divide both sides by A0]

A/Ao = e^(-0.00299*199), [t = 3.32 min*(60 sec/ 1 min) =199 sec]

A/A0 = . 0.551= 55%, (* 100, rounded)

The Arrhenius equation is k = Ae(-Ea/kT), where A is the frequency or pre-exponential factor and e(-Ea/RT) is the fraction of collisions at temperature T that have enough energy to overcome the activation barrier (i.e., have energy greater than or equal to the activation energy Ea).

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Displacement is the change in position of an object. Displacement is a vector quantity.

As for the given options, option (a) is the definition of Force. Option (b) is the definition of velocity. Option (d) is the definition of motion. Displacement is the shortest distance between initial point and final point whereas distance is the total distance covered from initial point to final point.

Since displacement is a measure of length, its unit is usually meter. It is denoted as Δx. The formula for calculating displacement is Δx = [tex]x_{2}[/tex] - [tex]x_{1}[/tex], where [tex]x_{2}[/tex] is the final position and [tex]x_{1}[/tex] is the initial position.

Therefore, Displacement is the change in position of an object.

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By uniform motion, the distance traveled is 11.24 meters.

We need to know about the uniform motion to solve this problem. The uniform motion is the motion of an object which has acceleration applied. It can be determined as

vt = vo + a . t

vt² = vo² + 2a . s

s = vo . t + 1/2 . a . t²

where vt is final velocity, vo is initial velocity, a is acceleration, t is time interval and s is displacement.

From the question above, we know that:

a = 1.25 m/s²

vo = 0 m/s

vt = 5.3 m/s

By using the second equation, we can calculate the distance

vt² = vo² + 2a . s

5.3² = 0² + 2 . 1.25 . s

2.5s = 28.09

s = 11.24 m

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There are 2501.3m³ in 88,263 ft³ the Olympic swimming pool.

Along with arithmetic, geometry is one of the oldest subfields of mathematics. It is concerned with spatial characteristics like the separation between objects, their shape and size, and their relative positions. Geometer is the term used to describe a mathematician who specializes in geometry.

The area of mathematics known as geometry is concerned with the characteristics of the surrounding environment as well as the shapes of particular objects and their spatial relationships.

swimming pool is approximately 88,263 ft³

assume there are 3.28 ft in 1 meter.

Now ,

Given that :

3.28ft = 1m

1 ft = 1/(3.28)m

So,

1 ft = (1/3.28)³m³

88,263 ft³ = 88263/(3.28)³

                = 2501.3m³

There are 2501.3m³ in the Olympic swimming pool.

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The true airspeed will increase and true altitude will increase.

True airspeed is the airspeed of an aircraft relative to undisturbed air.

It's the aircraft speed relative to the airmass in which it's flying.

If the outside air temperature increases during a flight at constant power and at a constant indicated altitude, the true airspeed will increase and true altitude will increase.

Thus, the true airspeed will increase and true altitude will increase.

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This system's potential energy changed by 40 J.

Energy = charge * potential difference

=> Energy = (8v)*5

=> Energy = 40 J

Hence the answer is 40 J.

Potential difference, often known as voltage, is equal to the amount of current times the resistance. One Joule, or one Volt, of energy is required for one Coulomb of charge to flow from one place in a circuit to the another.

V=U q, The change in the potential energy of a charge q transported from point A to point B, divided by the charge, is what is used to determine the electric potential difference between points A and B, or VBVA. The joules per coulomb unit of the potential difference is called the volt (V).

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