choose the correct description of how deeply each portion of the electromagnetic spectrum penetrates earth's atmosphere and if space telescopes are important to our understanding of the universe.

We will have that kinetic energy is different from potential energy as follows:

Kinetic energy is energy of a moving object, whereas potential energy is energy possessed by matter as a result of its location or structure. [Option C]

The most prevalent kind of star in the cosmos and one with a lengthy lifespan are low-mass red giant stars, also referred to as "M-dwarfs."

These stars can blaze more steadily and slowly over billions of years because they are cooler and less powerful than our sun.

This lengthy lifespan is significant because it offers planetary systems a secure setting in which to grow and possibly support life. M-dwarfs are home to a large number of exoplanets, some of which are situated in the star's habitable zone, where liquid water might occur.

Because of this, low-mass red giant stars are essential to our comprehension of the genesis and possibility of life in the cosmos.

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Answer:

an hour and 30 minutes i believe.

Explanation:

Answer:

a hours and 30 mins

Explanation:

Answer:

The substance of the physical world; anything that occupies space or has substance. An organized way of scientists to gather and pursue scientific knowledge. Consists of three main components: Hypothesis, Observation, and Experimentation. One of the main components of the Scientific method.

Explanation:

The lowest power objective typically used in microscopy is the scanning objective, commonly referred to as the 4x objective.

Microscopy objectives are available in various magnifications, ranging from 2x to 100x or more. Each objective offers different levels of magnification and resolution. The 4x objective is commonly used as the lowest power objective due to its wide field of view and lower magnification.

As the magnification increases, finer details of the specimen become visible but with a narrower field of view. Consequently, higher power objectives require more precise focusing adjustments, making the coarse focus knob less suitable. Therefore, it is important to exercise caution and utilize the coarse focus knob primarily with low-power objectives like the 4x objective to avoid potential damage to the specimen and objective.

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The 1.3μm optical communication system consists of an LED source, a 15 km fiber optic cable with attenuation, splices and connectors, resulting in a total loss of 22.1 dB and a received power of \(1.43 * 10^{(-11)\) mW at the detector.

Here is a simple illustration of the 1.3μm light wave optical communication system you described:

The system consists of a light source, a fiber optic cable, and a detector. The light source is an LED with an average power of 0.2XX mW. The fiber optic cable is 15 km long and has an attenuation of 1.45 dB/km. The system has splices at every 2.5 km with a loss of 0.20 dB. The connectors have a loss of 1 dB each. The safety margin is 4 dB.

The total loss of the system is calculated as follows:

Total loss = Fiber attenuation + Splice loss + Connector loss + Safety margin

= 1.45 dB/km * 15 km + 0.20 dB/splice * 6 splices + 1 dB/connector * 2 connectors + 4 dB

= 22.1 dB

The received power at the detector is calculated as follows:

Received power = Transmitted power *\((10^{(-Loss/10)})\)

=\(0.2XX mW * (10^{(-22.1/10)})\)

=\(1.43 * 10^{(-11)} mW\)

This is a very small amount of power, but it is still enough to be detected by the detector.

The system can be improved by using a more powerful light source, a lower-loss fiber optic cable, and connectors with a lower loss. The safety margin can also be reduced, but this will increase the risk of errors.

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Answer:A

Explanation:

Hdjfjdjfjr

A liquid thermometer can be used to test for fevers. When body temperature increases, the liquid inside the thermometer expands and rises to show a higher temperature reading, the explanation that describes the change in the thermal energy,

The thermometer tip is heated by conduction with the person's body. The particles of the thermometer tip then transfer heat by conduction with the liquid inside of it. The particles inside the liquid then convect heat causing the warmer particles to speed up, expand, and rise.

It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.

Conduction with the subject's body heats the thermometer's tip. The liquid inside the thermometer is subsequently heated by conduction between the particles of the thermometer tip. The warmer particles then accelerate, expand, and ascend as a result of the heat convecting through the liquid's particles.

Thus, the correct answer is option D.

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Answer:here you goo

Explanation:

A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. ... A rock is an aggregate of one or more minerals, or a body of undifferentiated mineral matter.

Answer:

Minerals are naturally occuring solid while rocks are naturally occuring substances consist of aggregate minerals clumped together with other materials

Limited access to data and time constraints are the limitations in a work, energy or power lab.

This is referred to as a facility which provides different types of research, experiments and measurement and is usually performed under a controlled environment or condition.

In an energy lab, it is best to note that adequate knowledge is required for its day to day running. It also involves the use of special types of procedures and methods are required so as to prevent accidents and ensure that the exact reactions are initiated.

The limitations associated  in work, energy, power lab include limited access to data and time constraints which may affect the productivity of the scientists which is why it was chosen as the correct choice.

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The new orbital speed after friction from the Earth's upper atmosphere has done -7.5x\(10^{9}\) J of work on the satellite is approximately 7489 m/s.

We can use the work-energy principle to solve this problem. The work done by the atmosphere is equal to the change in kinetic energy of the satellite

W = ΔK

Where W is the work done by the atmosphere and ΔK is the change in kinetic energy. We can find the initial kinetic energy of the satellite using the formula

K = (1/2)m\(V^{2}\)

Where m is the mass of the satellite and V is its initial velocity.

Since the problem does not provide the mass of the satellite, we can assume it is constant and cancel it out in the equations. Thus, we can write

W = ΔK = (1/2)m\(Vf^{2}\) - (1/2) m\(Vi^{2}\)

Where Vf is the final velocity of the satellite and Vi is its initial velocity.

Substituting the given values, we have

-7.5x\(10^{9}\) J = (1/2)m\(Vf^{2}\) - (1/2) m\(Vi^{2}\)

We also know that the initial orbital speed of the satellite is equal to the velocity required for circular motion at its altitude, which can be calculated using the formula

V = √(GM/r)

Where G is the gravitational constant, M is the mass of the Earth, and r is the distance between the satellite and the center of the Earth.

Substituting the given values, we have

Vi = √[(6.67x\(10^{-11}\)N\(m^{2\)/\(Kg^{2}\))(5.97x\(10^{24}\) kg)/(6.67x\(10^{6}\)m)] = 7646 m/s

Solving for the final velocity, we have

Vf = √[2(-7.5x\(10^{9}\) J)/(m) + \(Vi^{2}\)]

The mass of the satellite cancels out, and we get

Vf = √(2(-7.5x\(10^{9}\) J)/(\((7646m/s)^{2}\) + \((7646m/s)^{2}\) ) ≈ 7489 m/s

Therefore, the new orbital speed after friction from the Earth's upper atmosphere has done -7.5x\(10^{9}\) J of work on the satellite is approximately 7489 m/s.

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Answer:

Mass, m = 32 kg

Explanation:

Given that,

Force, F = 2000 N

The change in velocity, (v-u) = 50 m/s

Time, t = 0.8 s

We need to find the mass of the ball. The net force acting on an object is given by :

F = ma

Where a is acceleration

\(F=\dfrac{m(v-u)}{t}\\\\m=\dfrac{Ft}{(v-u)}\\\\m=\dfrac{2000\times 0.8}{50}\\\\m=32\ kg\)

So, the mass of the ball is 32 kg.

Answer:

Metamorphic

Explanation:

Metamorphic rocks form when rocks are subjected to high heat and high PRESSURE.

The electron in question has an unnormalized wave function given by , where 2, and 1 3 . When measuring the momentum of this electron, the probability of finding is 0.143.

To calculate this probability, we need to take the square of the modulus of the wave function, which gives us | | = . The probability of finding this momentum value is therefore 0.143. The average momentum of this electron can be calculated by taking the inner product of the wave function with the momentum operator , giving us  . This inner product gives us an expectation value for the momentum of this electron, which is the average momentum. In conclusion, if we measure the momentum of the electron with the given unnormalized wave function , we have a probability of 0.143 of finding the momentum value and an average momentum of this electron.

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The repulsion force between the two Arkon nuclei when the distance between them is 1x10⁻³μm is approximately 7.4x10⁻¹⁴N. The correct option is d. 7.4x10⁻¹⁴N.

The formula for repulsion force between two Arkon nuclei when the distance between them is given by Coulomb's law. Coulomb's law states that the force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Mathematically, the law can be expressed as F=kq1q2/r²,

Where F is the force, q1 and q2 are the charges, r is the distance between the charges, and k is the Coulomb's constant.The electric charge of one electron is 1.6x10⁻¹⁹C.

Therefore, the charge of the Arkon nucleus with 18 protons = 18(1.6x10⁻¹⁹) C = 2.88x10⁻₈⁸ CThe force between the two Arkon nuclei can be calculated using the formula above.

F=kq1q2/r²

Substituting the values we have;F = (9x10⁹)(2.88x10⁻¹⁸ C)2/(1x10⁻³ m)2F ≈ 7.4x10⁻¹⁴ N. Therefore, the repulsion force between the two Arkon nuclei when the distance between them is 1x10-3μm is approximately 7.4x10⁻¹⁴N. The correct option is d. 7.4x10⁻¹⁴N.

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The mass and energy of the wood before burning would be equal to the energy and matter of the ash, soot, heat and light after burning.

The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.

While burning of wood, the chemical energy in the wood is released as heat because of the chemical reaction of wood and oxygen.

This type of chemical reaction is called combustion and it requires oxygen. Combustion converts the stored chemical energy in the wood into heat and light energy.

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Answer:

the two objects are in thermal equilibrium

Explanation:

thermal equilibrium us the state where two bodies or objects have the same amount of temperature thus no heat conduction

A guitar player is turning her guitar, strikes two swings, which create frequencies of 392.0 hz and 387 hz. 5 Hz is the beat frequency.

A key idea in physics called frequency denotes how many cycles or oscillations a wave or particle does in a certain amount of time. Hertz (Hz), which denotes the number of cycles per second, is the unit of frequency. The pace at which the electric and magnetic fields oscillate is equivalent to the frequency of an electromagnetic wave. The pitch or tone of a sound is determined by the frequency of sound waves, with a higher frequency sound producing a higher pitch. A vibrating object's inherent frequency or resonant frequency determines its frequency. Warmer materials have higher atomic oscillations, hence the frequency of an object's atomic vibrations correlates to its temperature.

frequency = 392.0 Hz - 387 Hz

                 = 5 Hz

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The average speeds based on the split times from the data in the table for the world record 100 m run by Usain Bolt indicates the following values;

a. 1.744 s

b. 5.74 m/s

c. Maximum speed in the first 10 meters is about 11.47 m/s

d. Acceleration over the first 10 meters is about 6.58 m/s²

e. 12.35 m/s

Average speed is a measure of how fast the motion of an object is within a specified distance. The average speed is the ratio of the total distance to the total duration.

a. The time Usain Bolt takes to run the first 10 meters is; t = (1.89 s - 0.146s) = 1.744 s

b. The average speed = Distance/time = 10 m/1.744 s = 5.74 m/s

c. Whereby the acceleration is constant, the maximum speed will be at the first session, therefore;

v² = u² + 2·a·s

s = The distance = 10 meters

v = √(2×a×10) = 2·√(5·a)

v² = 20·a

Acceleration, a = (v - u)/t = (v/1.744)

v² = 20 × (v/1.744)

v = 20/1.744 ≈ 11.47

The maximum speed over the first 10 meters is about 11.47 m/s

d. The acceleration a = v/1.744

Therefore; a = 11.47/1.744 ≈ 6.58

The acceleration over the first 10 meters is about 6.58 m/s²

e. The fastest time for each 10 metre section is 0.81 seconds in the 60 to 70 meters section, therefore;

Therefore, we get;

Top average speed = (70 - 60)/(0.81) ≈ 12.35

The top speed is about 12.35 m/s

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The electric field created by a point charge is given by the equation E = k * (Q / \(r^{2}\)).The charge of object A is -1.11 × \(10^{-9}\) C (option b).

In this case, the electric field at point P is 40.0 N/C directed to the south. Since the field is directed towards the south, the charge of object A must be negative. Plugging the given values into the equation, we have:

40.0 N/C = (9 × \(10^{9}\) N \(m^2/C^2\)) * (Q / (0.250 \(m)^2)\)

Simplifying the equation, we can solve for Q:

Q = (40.0 N/C) * (0.250 \(m)^2\) / (9 × 10^9 N \(m^2/C^2)\)

Calculating the expression, we find Q ≈ -1.11 × \(10^{-9}\) C. Therefore, the charge of object A is approximately -1.11 × \(10^{-9}\) C, which corresponds to option b.

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There are a total of 12 chairs in each row, and the scenario is represented by the equation 8c = 96.

Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the phrase 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +.

Given, there are 96 chairs and all Kayla wants there to be eight rows.

Let "c" be the number of chairs in each row,

Since there is a total of 96 chairs and 8 rows.

The equation for the situation is:

8 *c = 96

So,

In 8 rows there are a total number of chairs = 96

In each row, there are a total number of chairs = 96/8

In each row, there are a total number of chairs = 12

Therefore, the equation that represents the situation is 8c = 96 and there is a total of 12 chairs in each row.

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When transferring a vacuum furnace chamber from atmospheric pressure to a supposedly "rough" vacuum, the roughing valve is utilized (typically in the range of 10 -2 to 10 -3 Torr).

This degree of vacuum is sometimes sufficient to carry out the targeted process. Another common name for vacuum is negative pressure (or soft vacuum). This happens when an application needs to keep track of both pressure increases and pressure drops in both directions above and below the atmosphere. The difference in pressure between the exhaust exit and input provides the basis for a vacuum.

We all know that water and air travel from high altitude to low altitude, and that a vacuum is produced by a difference in pressure between the two.

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Answer:

I think the answer is C :)

Explanation:

Answer:

216.32kN

Explanation:

Force can be expressed according to the formula;

Force = mass ×acceleration

Given

Mass = 1250kg

Velocity = 4.16m/s

Distance = 0.05m

We can get the acceleration first using the equation of motion

v² = u²+2as

4.16² = 0²+2a(0.05)

17.3056 = 0.1a

a = 17.3056/0.1

a = 173.056m/s²

Get the force required

Force = 1250×173.056

Force = 216,320N

Force = 216.32kN

Hence the force constant of the material is 216.32kN

The correct option is (c) Number of neutrons = number of protons

The right response is neutron. Neutron.

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The velocity of the two-block system at the top of the ramp is half the initial velocity of the second block. However, the force due to gravity exerted on both blocks as they travel up the ramp is not relevant to the conservation of momentum because it is a conservative force that does not affect the total momentum of the system.

The total momentum of the system before the collision is equal to the momentum of the second block, which is given by:

p = mv0

where m is the mass of each block, and v0 is the initial velocity of the second block.

After the collision, the two blocks move together with an unknown velocity vr. The total momentum of the system after the collision is:

p' = (2m)vr

where 2m is the total mass of the two blocks, and vr is the final velocity of the system.

The conservation of momentum states that the total momentum of an isolated system remains constant, provided no external forces act on it. Therefore, the total momentum of the system before the collision is equal to the total momentum of the system after the collision:

p = p'

Substituting the expressions for p and p' gives:

mv0 = (2m)vr

Simplifying gives:

vr = v0/2

The velocity of the system can be measured to confirm that the conservation of momentum applies to the system.

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Answer:

???????????????????????

Explanation:

The x - component of the initial velocity is given as:

Ux = Vi cos theta

Ux = 100cos 60

Ux = 50m/s

Answer:

While the popularity of athletic footwear or “sneakers” has been widely assessed within academic literature, few studies to date have examined the influence of a specific sneaker subculture called “Sneakerheads”. Moreover, the brand preferences and brand identities that may exist within the Sneakerhead subculture have not been extensively examined. To address this gap in the research, semi-structured interviews were conducted with 12 male, self-identified Sneakerheads. The main goal of the research was to explore the Sneakerhead culture, while gaining an understanding of brand preferences, practices, and group identity factors. The Social Identity Theory was employed as the theoretical framework for this research. Qualitative analysis of the interviews revealed the following three topical areas: (1) , (2) , and (3)  Findings regarding the unique culture of Sneakerheads indicate a clear sense of group identity as it relates to motivations, behaviors, and brand identity within the Sneakerhead community. Moreover, the findings of this study further define the lifestyle of a Sneakerhead and shed light on their unique behaviors and practices within the culture.

Explanation:

A container gas expands to fill a 3l container and has a mass of 129g its density is equal to 0.043 \(kgm^{-3}\)

Let's understand the answer in detail

Density is equal to the mass of a substance divided by its volume. The SI unit of density is Kg/m3. Other units of density are g/cm3, g/mL, kg/L

The formula we are using is going to be

D=m/v, where

D= density

m=mass

V=volume

The data that is given to us states that

mass = 129g

volume= 3 L

density = ?

Now we will put the values in the formula,

d= m/v

d = 0.129 Kg / 3L

d = 0.043 Kg / L

Therefore the density of the gas is 0.043 Kg / L.

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When a body is positively charged, it implies that there is positive as well as negative charge in the body but the positive charge is more than negative charge.

Most of the materials that make up our world are composed of atoms, which are made up of a nucleus containing protons and neutrons surrounded by electrons. When an atom loses or gains electrons, it becomes positively or negatively charged, respectively. This is because the number of protons in an atom, which determines its atomic number and chemical properties, does not change.

When there are more protons than electrons, the atom becomes positively charged, and when there are more electrons than protons, it becomes negatively charged.Positive charge is the property of a material that has lost one or more electrons and therefore has more protons than electrons. Positive charges repel other positive charges, while negative charges attract positive charges.

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