What factors does the speed of sound depend upon? what are some factors that it does not depend upon?.

Strontium forms a face centered cubic unit cell and has a density of [tex]2.64g/cm^{3}[/tex]. The radius of a strontium is [tex]2.136 x 10^{-8}[/tex] cm.

Density provides an easy way to calculate a body's mass from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), and the volume is equal to the mass divided by the density (V = M/d).

The structure of strontium (Sr) is similar to that of FCC. In FCC, the relationship between edge length and atomic radius is 2-a=4r2a=4r because unit cell atoms are present in the cube's corner and face centres. In this question, we are given an atomic radius and must calculate the edge length.

Here r=215pmr=215pm so a=4×2152–√=608.2pma=4×2152=608.2pm.

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The time needed to fully charge the capacitor is about equal to 5 time constants, or 5T.

A resistor (R) and a capacitor (C) together form an RC charging circuit, which has characteristics that change exponentially with time. This means that the charging of a capacitor is not instantaneous since capacitors have i-v characteristics that depend on time.

What is time constant?

Any electrical or electronic circuit or system that receives a signal or voltage, whether continuous (DC) or alternating (AC), will experience some sort of "time-delay" between its input and output terminals.

Commonly referred to as the circuit's time delay or time constant, this delay shows how long the circuit takes to respond to an input voltage or signal.

If a resistor is connected in series with a capacitor to create an RC circuit, the capacitor will gradually charge through the resistor until the voltage across it equals the supply voltage.

About five time constants, are what it takes for the capacitor to fully charge.

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The frequency that we hear is 1484.74 hz.

Frequency is defined as  the number of waves (here sound waves) that pass through a point in a unit time.

Frequency that can be heard can be calculated by the formula,

f = {(V)/(V - Vsource)} * fsource

source = train

V = speed of the sound = 343 m/s

Vsource = 50 mph = 50 * 0.447 = 22.35 mps

fsource = 1388 hz

f = {(343)/(343 - 22.35)} * 1388

f = 1484.74 hz

Frequency that can be heard when the train passes with the speed of 50 mph is 1484.74 hz.

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Bh³/3 is the moment of inertia of  a rectangular block of mass m.

Moment of inertia is a term used to describe a body's resistance to having the direction of its rotation along an axis changed by the application of a torque (turning force).

Axis options include internal, external, fixed, and moving. The moment of inertia (I), which is always represented in relation to that axis, is obtained by adding the results of multiplying each particle's mass by the square of its distance from the axis in the specific body. When determining the angular momentum of a rigid body, moment of inertia is equal to mass in linear momentum.

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Ionic bond energies typically range from 170 to 1500 kJ/mol (cited estimates vary). Purely ionic compounds have spherical ions in their crystal lattices; however, if the positive ion is tiny and/or highly charged.

It will deform the negative ion's electron cloud, an effect encapsulated in Fajans' laws. An ionic bond is a stable bond created by the full transfer of the valence electron. Positive ions, known as cations, and negative ions, known as anions, are created as a result of this type of connection.

Ionic bonds, also known as electrovalent bonds, are a type of linkage created in a chemical molecule by the electrostatic attraction of ions with opposing charges. When the valence (outermost) electrons of one atom are permanently transferred to another atom, a bond of this kind is created.

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The Oort cloud is c. a roughly spherical region larger than the orbit of Pluto that may contain a trillion comets.

In the field of science, the Oort cloud can be described as a spherical region of stars and comets that are known to surround the Sun. It is also believed that the region of Oort cloud is bigger than Pluto which is no longer considered to be a planet.

The Oort cloud is known to expand from  2,000 to 200,000 Astronomical Unit (AU) around the Sun.

However, it is difficult to observe the Oort cloud through a telescope or the eye.

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The total stretch of the double-length spring will be 20 cm.

kn₁ = mg

n₁ = mg/k

In second case,

keff = 1/k + 1/k

⇒keff = (k×k)/2k = k/2

So, k/2 × n₂ = mg

⇒n₂ = 2mg/k = 2n₁

  n₂ =  20 cm

When there is no force of support acting on your body, the phenomenon of "weightlessness" takes place. You are not being supported when your body is essentially in "free fall," falling at the speed of gravity.

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The total power radiated by the sun is equal to 3.93*10^26 watts.

Here, we have been told that the mean distance between the earth and the sun is = 1.50*19^11 m (i)

The average intensity of solar radiation incident on the upper atmosphere of the earth is = 1390 w/m² (ii)

The intensity of radiation emitted from a source in all directions at a distance r can be found by dividing the total energy emitted per second or power P by the surface area of a sphere of radius r. So, the intensity of radiation at a given point. Using the values of (i), (ii), we get -

= I = P/4π²

= P = 4π*(1.5*10¹¹)²*1390

= P = 3.93*10²⁶

Hence, we have found out that the power radiated by the sun is going to be 3.93*10²⁶ watts.

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The grasshoppers smell on the antennae.

Grasshoppers sense contact through organs located in different parts of the body such as antennae and apply on the head serti on the abdomen and receptors on the legs. The gustatory organs are located in the mouth and the olfactory organs are located in the antennae. Grasshoppers have such powerful leaping legs that people sometimes don't realize they also have wings.

While locusts use their jumping ability to gain momentum in the air most grasshoppers have fairly powerful flight abilities and make good use of their wings to evade predators. Locusts are non-venomous and pose no danger to humans. But they have strong jaws! It may be temporarily painful. Most grasshoppers mean rubbing their hind legs against their forewings. Special vertebrae on the inside of the hind legs act like a kind of percussion instrument when in contact with the thickened edges of the wings.

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The main or major source of energy in nuclear energy or geothermal energy is radioactive decay.

Radioactive decay is the emission of energy in the form of ionizing radiation.

Radioactive decay occurs in atoms that become unbalanced, called radionuclides.

Radioactive decay is the spontaneous breakdown of an atomic nucleus resulting in the release of energy and matter from the nucleus.

Radioactive decay usually results in the release of hug amount of energy.

Thus, we can conclude that the main or major source of energy in nuclear energy or geothermal energy is radioactive decay because the process usually results in the release of hug amount of energy.

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The height of the airplane is 335.17 ft.

Let PQ be the base, AB be the vertical distance from the ground to the aircraft.

One observer is standing at P and the angle of inclination from P to A is 50°.

Another observer is standing at Q and the angle of inclination from Q to A is 25°.

We know that, PB + BQ = 1000 ft

PB = 1000 - BQ -----(1)

When we consider a triangle PAB, Tan 50° = AB/PB

AB = PB Tan 50° ------(2)

Consider the triangle ABQ, Tan 25° = AB/BQ

AB = BQ Tan 25° ------(3)

Equating (2) and (3) we have,

PB Tan 50° = BQ Tan 25° -----(4)

Substitute (1) in (4), we get,

(1000 - BQ) Tan 50° = BQ Tan 25°

1000 Tan 50° - BQ Tan 50° = BQ Tan 25°

BQ (Tan 25° + Tan 50°) = 1000 Tan 50°

BQ = 1000 Tan 50°/ (Tan 25° + Tan 50°)

BQ = 718.76 ft

PB = 1000 - 718.76 = 281.24 ft

AB = PB Tan 50° = 281.24* Tan 50° = 335.17 ft

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In a uniformly accelerated motion, the number of revolutions that the motor executes in reaching its rated speed will be 48000 rev/[tex]min^{2}[/tex] and in coasting to rest will be 2333 revolutions.

(a) The acceleration experimented by the grinding wheel in reaching its rated speed can be calculated as:

The number of revolution by the wheel, n = [tex]\frac{(4000 - 0) rev/min}{(5/60) min}[/tex]

So, n = 48000 rev/[tex]min^{2}[/tex]

Now, the number of revolutions completed by the grinding wheel in the period of time can be calculated as:

n = [tex]\frac{(4000^{2} rev/min) - (0^{2} rev/min)}{2. (48000 rev/min^{2}) }[/tex]

So, n = 166.66 or 167 revolutions (approximate value)

(b) The acceleration experimented the grinding wheel in coasting to rest while in a circulatory motion can be calculated as:

n = [tex]\frac{(0 - 4000) rev/min}{(70/60) min}[/tex]

So, n = - 3429 rev/[tex]min^{2}[/tex]

Now, the number of revolutions done by grinding wheel in that period of time will be:

n = [tex]\frac{(0^{2} rev/min) - (4000^{2} rev/min)}{2. (-3429 rev/min^{2}) }[/tex]

Or, n = 2333 revolutions

Hence, in reaching its rated speed the number of revolution made by the grinding wheel will be 48000 rev/[tex]min^{2}[/tex] and in coasting to rest will be 2333 revolutions.

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Import quota effects on the importing country's producers.

In the field of economics quota signifies the time-bound restrictions governments impose on trade. Generally this is done to preserve and motivate domestic business and balance trade. Governments implies quotas by placing barriers on the value or number of exported or imported goods.

Hence, import quota effects on the importing country's producers.

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The induced magnetic field strength 9.5cm radially outward from the center of the plates is  821.052 Tesla.

We know very well that when a charge is moving with some speed in particular direction then, it will induce a magnetic field around its environment. Only moving charge is able to produce magnetic field, stationary charge only produce electric field.

We know that magnetic field is given by=(μ/2πr)×(q/t) where

μ is called as magnetic field constant,

q is the induced charge in the capacitor,

and r is the distance between the two plates

So, we have r=9.5cm=0.095m,(q/t) =39C/sec and μ=4π×10⁻⁷Tesla-m/A.

So, on putting the above values, we get

=>B=(4π×10⁻⁷ × 39)/2π×0.095

=>B=2×39/ 0.095

=>B=78/0.095

=>B=821.052Tesla.

Hence, induced magnetic field is 821.052Tesla.

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The sound level drops by 7.6 dB when we move 2.4 times as far away from the bird.

The decibel ratio of the measured sound intensity to the reference sound intensity is known as the sound intensity level (SIL), also known as the acoustic intensity level.

Let the initial distance be r₁ and the moved away distance be r₂. Then, r₂=2.4r₁.

Let the initial intensity be I₁ and the moved away intensity be I₂.

Then, the relationship between sound intensity and distance is,

[tex]\frac{I_2}{I_1}=\frac{{r_1}^{2}}{{r_2}^{2}}[/tex].

Let β₁ and β₂ be the two sound intensity levels. The difference in sound intensity is given by,

[tex]\begin{aligned}\beta_2-\beta_1&=\mathrm{10\;dB}\left(\log\frac{I_2}{I}-\log\frac{I_1}{I}\right)\\&=\mathrm{10\;dB}((\log I_2-\log I)-(\log I_1-\log I))\\&=\mathrm{10\;dB}\log \frac{I_2}{I_1}\end{alinged}[/tex]

Then, substitute, the I₂/I₁ value in the above equation.

[tex]\begin{aligned}\beta_2-\beta_1 &=(\mathrm{10\;dB})\log\frac{{r_1}^2}{{r_2}^2}\\&=\mathrm{10\;dB}\log\frac{{r_1}^2}{(2.4r_1)^2}\\&=(\mathrm{10\;dB})\log\left(\frac{1}{5.76}\right)\\&=-\mathrm{7.6\;dB}\end{aligned}[/tex]

The answer is -7.6 decibels.

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The 7 stages of the rock cycle are weathering, erosion and transport, deposition of sediment, burial and compaction, melting, uplift and deformation and metamorphism.

Weathering is a process of breaking down of rocks into smaller particles. Factors like temperature extremities, water and biological involvement of nature play an important role.

Erosion is a process of breaking down of rocks into sand-like particles. In the previous stage, water was only present as a factor for reactions to take place, while in erosion it acts as a transporting agent too.

Sediment is the constant deposition of small particles of sand, pebbles, that are broken down from rocks.

Burial and compaction happens when the sand particles are sedimented, they create layers which are soon covered by another layer of new sediments and the process goes on.

As soon as the rocks reach the bottom of the earth, the temperature rises and so does the pressure.

The process of forming a crust of earth upwards due to natural forces causing movement in the tectonic plates is called uplifting.

The constant pressure and sudden movements put some sedimentary and igneous rocks under great pressure. This stage is known as deformation and metamorphism.

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The reaction A(g)⇌B(g) has an equilibrium constant of Kp=2.3×10^−5, the sign of ΔG°rxn for the reaction is c. ΔG°rxn is positive.

Kp is much less than 1.This means that the response is non spontaneous in ahead direction. For, non spontaneous response, delta G is positive

Reactions with a negative ∆G launch power, because of this that that they could continue with out an power enter (are spontaneous). In contrast, reactions with a positive ∆G want an enter of power to be able to take place (are non-spontaneous.

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It takes 2.49 seconds for the ball to reach 100 feet of height.

In contrast to speed, velocity describes the rate and direction of an object's motion along a path. In other words, speed is a scalar quantity while velocity is a vector.

Simply put, velocity is the rate of motion of an object in a specific direction. Using a car driving north on a highway as an example, or a rocket after it has launched, as an example of speed. Scalar implies that the velocity vector's absolute value magnitude will always equal the motion's speed.

Using equation,

100 feet = 30.48m

v² = u² + 2as

v² = 0+2×9.8×30.48

v² = 597.40

v = 24.44m/s

v= u +at

24.44 = 0+9.8t

t = 24.44/9.8

t =2.49seconds.

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The maximum wavelength of light that would produce an output from a photovoltaic device manufactured from a semiconductor with an energy gap of 1.02 eV is 121 nanometer.

Given,

Energy gap = 1.02 eV

Wavelength = ?

We know that,

Speed of light, c, is given as 3 * 10⁸

Planck's constant, h, = 6.626 * 10⁻³⁴

Charge on photons  = 1.602 * 10⁻¹⁹

To calculate the maximum wavelength of light we will use a formula of Einstein's equation

Mathematically, Einstein's equation for photon energy is given by this formula:

E = hf = hc/λ

Where:

E is the energy.

h is Plank's constant.

λ is the wavelength.

c is the speed of light.

To find wavelength using the above formula

λ = hc/E

Now, substituting the values, we get

λ = (6.626 * 10⁻³⁴)(3 * 10⁸) / (1.02)(1.602 * 10⁻¹⁹)

λ = 1.21 * 10⁻⁷ m

In 1 nanometer we have 10⁻⁹ m

λ = 121 nm

Therefore, the  maximum wavelength of light that would produce an output from a photovoltaic device manufactured from a semiconductor with an energy gap of 1.02 eV is 121 nm.

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The forces that act on the beam are gravity and tension in the cable .

Gravity can be defined as the force that exists almost among all material objects that exist in the universe . Gravity is operating among objects of all sizes starting from subatomic sized particles to clusters of galaxies .It is the force that causes the free fall of an apple from the tree on the ground and also the movement of planets around the sun .

Tension can be defined as a force along the length of a medium , the force here is especially carried by a flexible medium such as a rope or a cable . The SI unit of tension is Newton per meter .

The forces that act on the beam are gravity and tension in the cable .

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The combined velocity of the boy and the skateboard just after the boy lands on it is 3.88 m/s.

Velocity can be defined as the rate of change of displacement.

To calculate the velocity of the boy and the skateboard just after the boy lands on it, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the velocity of the boy and the skateboard is 3.88 m/s.

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the magnetic flux density's induced emf across the coil is equal to 5e^-2t.

The magnetic flux across a surface in physics, specifically electromagnetism, is the surface integral of the normal component of the magnetic field B over that surface. The standard notation is B or. The weber is the SI unit for magnetic flux, and the maxwell is the CGS unit.

According to Faraday's law, induced EMF is equal to the rate at which magnetic flux changes. BA = Magnetic flux = Area x Magnetic field strength. As a result, induced EMF is calculated as follows: (change in Magnetic Flux Density x Area)/change in Time.

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Answer:

The empty space has no particles to transfer thermal energy

Empty space is a very poor thermal conductor

Answer:

D

Explanation:

did it on edge 2023 :)

The distance between stations can only be greater than the visual horizon, or between 30 and 50 miles, due to the requirement of a line of sight (48 to 80 km). The second reason is because, quite surprisingly, microwave networks may have lower latency than fiber, as we have already hinted at.

What is the purpose of a microwave tower?

A physical transmission tool called a microwave antenna is used to send microwave signals between two or more places. Antennas are used for radio astronomy, electronic warfare, and broadcasting in addition to other applications.

What function does the microwave antenna serve in the mobile tower?

A key system component that enables a microwave system to send and receive data between microwave sites is a microwave antenna. They are typically found at a tower's summit.

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Answer:

the answer would be 78.4N worth of tension each.

Explanation:

we know that the sign is motionless and all of the tensions are the same, so let us represent the system with newtons second law with the y-axis pointing upwards

[tex]\sum F_y=4t-mg[/tex]

where t is the tension of one of the strings and m is the mass of the signpost. We know that the net force in the y direction is zero, so[tex]4t-mg=0\Rightarrow{t=\frac{mg}{4}=\frac{32.0*9.8}{4}=78.4}[/tex]

The linear velocity of the satellite  at the given angular speed and position is determined as 3,053.4 m/s.

The linear velocity of the satellite is calculated by applying the following equations.

v = ωr

where;

The linear velocity of the satellite is the tangential velocity of the satellite and it is measured along the axis or circumference of the Earth.

The distance of the satellite from the center of the Earth is calculated as follows;

r = 35600 km + 6400 km

r = 42,000 km

r = 42,000,000 m

The linear velocity of the satellite is calculated as follows;

v = (7.27 x 10⁻⁵ rad/s) x (42,000,000)

v = 3,053.4 m/s

Thus, the linear velocity of the satellite depends on the angular velocity and distance.

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A horizontal layout will enable you to adjust the width of the views and objects contained.

The printed or published work's layout, which establishes the hierarchy of its various graphic elements, serves as its master plan or blueprint. The layout could mean. Page Layout refers to how visual elements are arranged on a page. Comprehensive Layout refers to a suggested page layout that a designer offers to clients.

Process, product, hybrid, and fixed position layouts are the four fundamental layout types. We examine each of these types' fundamental traits in this section. Then, we look at the specifics of how some of the main types were created. Process maps. Arrangements that classify resources based on related procedures or purposes

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Answer:

Oscillation period 4.5 s

Explanation:

Given:

m = 3 kg

L = 5 m

g = 9.8 m/c²

___________

T - ?

Oscillation period:

T = 2π·√ (L / g)

T = 2·3.14·√ (5 / 9.8) ≈ 4.5 s

Answer:

[tex]P_2=3.79atm[/tex]

Explanation:

According to Boyle's Law:

[tex]P_1V_1=P_2V_2[/tex]

Rewriting to find [tex]P_2[/tex]:

[tex]P_2=\frac{P_1V_1}{V_2}[/tex]

[tex]P_1=4.39atm\\V_1=5.26L\\V_2=3.78\\P_2=\frac{(4.39atm)(3.26L)}{3.78L}\\P_2=3.7861atm[/tex]

This answer follows Boyle's statement that pressure is inversely proportional to volume (V∝[tex]\frac{1}{P}[/tex]).  As the volume decreases, the pressure must proportionately increase.

The drill a water well in the area pictured  Because there is groundwater there as secondary porosity, I want to drill on the linear soil zone with plantations.

Using a drill bit, drilling is a cutting method that makes circular holes in solid objects.

The spinning cutting tool with multiple points is frequently a drill bit. The bit is pressed against the workpiece as it rotates at rates of hundreds to thousands of revolutions per minute.

This prevents chips from the drilling hole from falling into the workpiece by pushing the cutting edge against it.

By generating low residual stresses around the hole opening and a very thin layer of highly stressed and disturbed material on the newly formed surface, drilling may have an impact on the workpiece's mechanical properties.

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