if the moment of inertia of the shaded area about the a-a' axis is 18e6mm^4 what is the moment of inertia about the b-b' axis

Answer:

Capacitor

Explanation:

Capacitor will passes ac interference to ground and blocks dc voltage, and is used to control radio interference

Answer:

the answer is semidiurnal

Answer:

I think it is semi-diurnal :)

Hope this helps!!

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Answer:

Distance = 0.0052 m

Explanation:

Work =1.56J

Force = 300N

Distance = ?

Work=Force*Distance

1.56 J = 300N * Distance

1.56/300 = Distance

0.0052 m = Distance

Answer:

Dietary carbohydrates provide the body with energy for tough workouts and replenish energy stores in muscles in the form of glycogen.

Explanation:

The tangent of the angle at which the items slide equals the coefficient of static friction. The measurement of k can be done in a similar way. To accomplish it, push the upper object while angling it upward. The tangent of that angle equals k when the upper object slides along at a constant speed.

Why is the coefficient of static friction determined using an incline?

By calculating the angle at which the force of gravity overcomes the static friction, you can utilize an item that is inclined to calculate the static coefficient of friction.

How can you tell which way static friction is prevailing?

Static friction pushes in the direction you're trying to travel when you walk (see Figure 2 below). In the absence of friction, the foot would slip backwards as it presses on the ground (like walking on ice).

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Answer:

Potential -> Kinetic -> Potential ->

Explanation:

Point A is potential becuase it's stopped (its energy isn't released). Point B is where that potential energy is released and turned into Kinetic energy. And point C is where potential energy is stored again. Same with point D.

Answer:

increase distance

Explanation:

Inclined planes make it easier to move objects to a higher elevation. The sloping surface of the inclined plane supports part of the weight of the object as it moves up the slope. As a result, it takes less force to move the object uphill.

Answer:

Hello your answer would be increase of distance

Explanation:

I know that because than you would have to go upward with the object.

Sry,I only know the answer of q2

Chlorine is a non metal because it is bad conductor of heat and sodium is a metal because it is good conductor of heat.

The 3 ways in which metal is different from non metal are given below:

1)metal are good conductor of heat but nonmetal are bad conductor of heat.

2)metals are malleable but non metal aren't malleable.

3)metals are generally ductile but non metal aren't ductile.

Hope it will helpyou!

Answer:

Explanation:Chlorine is a non metal because it is bad conductor of heat and sodium is a metal because it is good conductor of heat.

The 3 ways in which metal is different from non metal are given below:

1)metal are good conductor of heat but nonmetal are bad conductor of heat.

2)metals are malleable but non metal aren't malleable.

3)metals are generally ductile but non metal aren't ductile

The correct representation of the right-hand rule for a current flowing to the right is as follows:

Hold your right hand out with your thumb pointing in the direction of the current flow.

Curl your fingers towards the direction of the magnetic field.

Your fingers will indicate the direction of the magnetic field lines around the current-carrying wire.

This right-hand rule is also known as the "right-hand grip rule" or the "right-hand screw rule". It is used to determine the direction of the magnetic field created by a current-carrying wire.

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A kind of mass movement in which materials move fast in a disorganized, chaotic fashion mixed with water is a debris flow.

Debris flow is a type of mass movement or landslide characterized by the rapid movement of a mixture of water, rock fragments, soil, and other debris down a slope. It typically occurs in mountainous or hilly regions with steep slopes and is triggered by heavy rainfall, snowmelt, or other sources of water.

During a debris flow, the materials become saturated with water, causing them to lose cohesion and flow downhill in a turbulent and uncontrolled manner. The movement is often fast, chaotic, and disorganized, with a mix of solid particles and water acting as a fluid-like mass.

Debris flows can cause significant damage to infrastructure, property, and life, as they can carry large volumes of material and have considerable destructive force.

In summary, a debris flow refers to a type of mass movement in which materials, such as rocks, soil, and debris, move rapidly in a disorganized and chaotic fashion mixed with water. It is an important geological phenomenon that can have severe consequences in areas prone to such events.

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Answer:

standard

Explanation:

we sometimes use weights of known mass to balance with an object of unknown mass to determine that objects weight.

Answer:

It is because some of the heat is lost in the surroundings.

Explanation:

To calculate the specific heat of the metal, the following steps are performed.

Take a piece of metal whose mass and the initial temperature is known.

Now take a beaker filled with some measured amount of water and the temperature of water is known.

Drop the heated metal piece in the water so that the equilibrium is reached.

According to the principle of calorimetery,

Heat lost by the metal = heat gained by the water

here, some of the heat is lost in the surroundings so we don't get the correct value of the specific heta of the metal.

The magnitude of the plane's acceleration is 75 m/s². When a jet airplane is flying through the very bottom of a vertical circle, it is experiencing both centripetal acceleration towards the center of the circle and gravitational acceleration due to the Earth's gravity.

The centripetal acceleration (ac) is given by the formula:

ac = (v² / r)

where v is the velocity of the plane and r is the radius of the circle.

In this case, the velocity of the plane is 300 m/s and the radius of the circle is 4000 m. Plugging these values into the formula, we get:

ac = (300² / 4000)

ac = 22500 / 4000

ac = 5.625 m/s²

Additionally, the gravitational acceleration (ag) experienced by the plane is equal to the acceleration due to gravity (g), which is approximately 9.8 m/s².

Therefore, the magnitude of the plane's acceleration is the vector sum of the centripetal acceleration and the gravitational acceleration:

Magnitude of acceleration = √(ac² + ag²)

Magnitude of acceleration = √((5.625)² + (9.8)²)

Magnitude of acceleration = √(31.640625 + 96.04)

Magnitude of acceleration = √(127.680625)

Magnitude of acceleration ≈ 11.307 m/s²

The magnitude of the plane's acceleration while flying through the very bottom of a vertical circle with a radius of 4000 m and a constant speed of 300 m/s is approximately 75 m/s². This acceleration is a combination of the centripetal acceleration towards the center of the circle and the gravitational acceleration due to the Earth's gravity.

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Answer:

Explanation:

Work:

A = m·g·h = 32·9.8·0.1 = 31.36 L

Power:

N = A / t = 31.36 / 0.83 ≈ 38 W

The measurement of angle R is 37°. Therefore, option A is correct.

Given information,

Angle P = 53°

Radius = PQ

Tangent = QR

As PQ is the radius of the circle and QR is tangent. The angle between the radius and the tangent is always 90° because the radius and tangent are perpendicular to each other. Thus, Angle Q is 90°.

The sum of all the internal angles in a triangle is always equal to 180°.

Thus,
∠P +∠Q + ∠R = 180°

Substituting the values:

53° + 90° + ∠R = 180°

143° + ∠R = 180°

∠R = 180° - 143°

∠R = 37°

Therefore, the measurement of angle R is equal to 37°.

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Your question is incomplete, most probably the full question is this:

Is tangent to circle p at point q. What is the measure of angle r? 37° 53° 90° 97°.

The resulting changes will be:

1. Pressure head: 88 ft (or 26.82 m)

2. Effective stress: No change, assuming no other factors affect it

3. Fluid pressure: No change

4. Total stress: Decreased by the same amount as the effective stress

To calculate the effective stress in the aquifer, we need to subtract the fluid pressure from the total stress.

Given:

Pressure head in the aquifer = 100 ft (or 30.48 m)

The pressure head in the aquifer is directly proportional to the fluid pressure, which can be calculated using the formula:

Fluid pressure (P) = ρ * g * h

Where:

ρ = density of the fluid (water) = approximately 1000 kg/m³

g = acceleration due to gravity = 9.8 m/s²

h = pressure head

Fluid pressure = 1000 kg/m³ * 9.8 m/s² * 30.48 m ≈ 298,440 N/m² (or Pa)

The total stress in the aquifer is the sum of the fluid pressure and the effective stress. Therefore, the effective stress can be calculated by subtracting the fluid pressure from the total stress.

Now, let's consider the changes in the hydraulic head due to pumping:

Change in hydraulic head = -12 ft (or -3.66 m)

The resulting changes in each parameter will be as follows:

1. Pressure head:

The pressure head will be reduced by 12 ft, so the new pressure head will be 100 ft - 12 ft = 88 ft (or 26.82 m).

2. Fluid pressure:

The fluid pressure does not change, as it depends on the density of the fluid and the acceleration due to gravity, which remain constant.

3. Effective stress:

The effective stress can be calculated as the total stress minus the fluid pressure. Since the fluid pressure remains constant, the effective stress will also remain constant unless there are other factors affecting it.

4. Total stress:

The total stress is the sum of the fluid pressure and the effective stress. As mentioned earlier, the fluid pressure remains constant, so the total stress will decrease by the same amount as the effective stress, assuming no other factors affect the total stress.

Therefore, the resulting changes will be:

1. Pressure head: 88 ft (or 26.82 m)

2. Effective stress: No change, assuming no other factors affect it

3. Fluid pressure: No change

4. Total stress: Decreased by the same amount as the effective stress

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This is the measure of the change in pressure from one point in a hydraulic system to another.

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Forces  Fv = 33N,  Fh = 3.75 N, d=1.334m

a)For net force to be zero in vertical direction Fv = F1+ F2 = 33N

b)For net force to be zero in horizontal direction Fh = F3 = 3.75 N

c)Net torque about point O = 0

Fv.d - F2.b - F3.a= 0

33d - 10.5 x 3.3 - 3.75 x 2.5 = 0

d=1.334m

A force is a push or pull that an object experiences as a result of interacting with another object. There is a force acting on each object whenever two objects interact.

Contact forces are the kinds of forces that develop when two interacting objects appear to be in physical contact with one another. Frictional, tensional, normal, air resistance, and applied forces are some examples of contact forces.

When two things are interacting but are not physically touching each other, action-at-distance forces can still create a push or pull.

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The skater does indeed reach the same height on either side of the track With friction turned on.

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Answer: An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

Explanation: The parts of a circut bit can easily be found online, but heres a pic i found.

Answer:

The Sun derives all its energy from a fusion cycle. In that process, tiny hydrogen molecules combine into a continuous proton-proton chain to create larger helium nuclei. The above figure illustrates the fusion of hydrogen into helium.

Explanation:

Hope this helps.

Answer:

nuclear fusion

Explanation:

In this process, small hydrogen molecules fuse together to form bigger helium nuclei in a continuous proton-proton chain.

Answer:

Often the independent variable is plotted on the x-axis - and example might be time (an experiment where time is measured by a watch or an independent mechanical device)

The dependent variable is often plotted on the y-axis - and example here might be the velocity or the acceleration,

It may be the responsibility of the experimenter to determine the value of the dependent variable by some type of measurement

d. J (Joules).

The work accomplished by lifting an object against gravity is measured in units of energy, which are represented by the Joule (J). Work is defined as the product of force and displacement, and its unit, the Joule, is equivalent to a force of one Newton (N) acting over a distance of one meter (m).

The work accomplished by lifting an object against gravity is measured in units of Joules (J). Work is a measure of the energy transferred to or from an object when a force acts upon it to cause displacement. When lifting an object against gravity, work is done because gravity is a force that acts on the object, and lifting it requires exerting a force opposite to gravity's direction. The amount of work done is calculated by multiplying the force applied to lift the object by the distance it is lifted. The Joule is the standard unit of energy and work in the International System of Units (SI), representing the amount of energy transferred when a force of one Newton acts through a distance of one meter.

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Light photons always travel at a constant speed (the speed of light) regardless of their energy, while the velocity of electrons is not constant and can vary with their energy.

Light photons and energetic electrons do not have constant velocities independent of energy. Light photons, which are particles of electromagnetic radiation, travel at a constant speed in a vacuum, which is approximately 299,792 kilometers per second (or about 186,282 miles per second) in a vacuum, denoted as the speed of light (c). This speed is a fundamental constant of nature and remains constant regardless of the energy of the photons. In other words, all photons, regardless of their energy, travel at the same speed in a vacuum.

On the other hand, energetic electrons do not have a constant velocity independent of their energy. According to classical physics, the velocity of an electron can vary depending on its energy. In classical mechanics, the kinetic energy of an object is related to its velocity. However, in the microscopic world of quantum mechanics, the behavior of particles such as electrons is described differently.

In quantum mechanics, the concept of particle velocity becomes less straightforward. Instead of velocity, quantum particles are described by wavefunctions, which represent the probability distribution of finding the particle at a certain location. The wavefunction of an electron evolves over time according to the Schrödinger equation, and it does not directly correspond to a well-defined classical velocity.

However, in certain situations, such as in electron beams or particle accelerators, electrons can be accelerated to high energies. In these cases, the energy of the electrons is related to their speed, but it is not a constant relationship. As the energy of the electrons increases, their speed can also increase, but it is not independent of their energy.

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In conclusion, nearsightedness is usually correlated with the use of spherical lenses, while cylindrical lenses are used to correct astigmatism. Achromatic lenses, diverging lenses, and converging lenses are not typically used to correct nearsightedness.

Nearsightedness, also known as myopia, is a common vision condition where objects up close appear clear, but objects in the distance appear blurry. It is usually correlated with the use of spherical lenses.

Spherical lenses, which have the same curvature across their entire surface, are used to correct nearsightedness by helping the light rays entering the eye to focus properly on the retina. These lenses are thicker at the edges and thinner in the center, causing the light to diverge slightly before reaching the retina.

Cylindrical lenses, on the other hand, are used to correct astigmatism, which is a condition that can sometimes coexist with nearsightedness. Astigmatism causes the cornea to have an irregular shape, resulting in blurry vision at both near and far distances.

Cylindrical lenses have different curvatures in different meridians to compensate for the irregular cornea shape, allowing the light to focus properly on the retina.

Achromatic lenses are a type of lens that corrects chromatic aberration, which is an optical distortion that can affect vision. However, they are not typically used to correct nearsightedness.

Diverging lenses, also known as concave lenses, cause light rays to spread out or diverge. These lenses are used to correct farsightedness, which is the opposite of nearsightedness. In farsightedness, objects in the distance appear clearer than objects up close. Therefore, diverging lenses are not usually used to correct nearsightedness.

Converging lenses, also known as convex lenses, are thicker in the middle and thinner at the edges. They cause light rays to converge and focus on a single point. These lenses are used to correct farsightedness or presbyopia, a condition that affects near vision as people age. Converging lenses are not typically used to correct nearsightedness.

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Approximately 8.75 seconds after the aircraft flies directly above the ground observer, the sound of the aircraft will be heard by the observer.

To determine how long after the aircraft flies directly above a ground observer the sound is heard, we need to consider the speed of sound and the altitude of the aircraft.

The speed of sound in air varies with temperature and pressure. In the standard atmosphere, at sea level and at a temperature of 15 degrees Celsius, the speed of sound is approximately 343 meters per second.

Since the altitude of the aircraft is given as 3 km (or 3000 meters), we need to account for the additional time it takes for the sound to travel that distance.

The time it takes for the sound to travel from the aircraft to the ground observer can be calculated using the formula:

time = distance / speed

The distance is equal to the altitude of the aircraft, which is 3000 meters.

The speed is the speed of sound, which is approximately 343 meters per second.

Plugging in the values, we have:

time = 3000 / 343 ≈ 8.75 seconds

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Answer:

Because of the interstellar dust and interior location of the solar system.

Explanation:

We will probably not be able to detect the neutral hydrogen that gives rise to the 21-cm radio signal if we point a large optical telescope to the region because, the interstellar dust obscures the location of the spiral arm of the Milky way galaxy and this makes neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

Also, the interior location of the solar system also makes the neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

So, the interstellar dust and the interior location of the solar system makes it difficult to detect the neutral hydrogen that gives rise to the 21-cm radio signal with a large optical telescope.

The criteria supported by the decision matrix are (a) Durability is more important than price and (c) Comfort is more important than price.

Decision Matrix is an effective method for reaching a choice is analysis. It works especially well when there are many of solid options available and a lot of varied considerations to make. This makes it a fantastic method to utilise in practically any significant decision where there isn't a clear and obvious preferred option.

Durability is the capacity to withstand repeated use without suffering significant degradation. Durability triumphs because it defeats time, while price fails. Even more crucial than cost is comfort. Contrarily, Millennials will forgo comfort in favour of a polished appearance.

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The required value of the index of refraction of glass is 1.5.

Given data:

The speed of light in a vacuum is, \(c = 3.0 \times 10^{8} \;\rm m/s\).

The speed of light in a glass is, \(v = 2.0 \times 10^{8} \;\rm m/s\).

Light has the tendency to travel from one medium to another, then the difference between the speeds of light in various mediums is determined by a term, known as the index of refraction. The mathematical expression for the index of refraction of glass is,

n = c / v

Solving as

\(n = \dfrac{3.0 \times 10^{8}}{2.0 \times 10^{8}}\\\\n = 1.5\)

Thus, we can conclude that the required value of the index of refraction of glass is 1.5.

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Answer:

1.5  is the answer

Explanation:

The time period the wave was measured is 1.43 x 10⁻⁴ s.

Time period of a wave is the time taken for one complete oscillation in the density of the medium is called the time period of the wave.

It can also be defined as the time taken by two consecutive compressions (Trough) or rarefactions (Crest) to cross a fixed point.

The formula for frequency is given as;

f = n/t

where;

The relationship between frequency of a wave and the time period is given as;

t = 1 / F

t = ( 1 / 7,000 Hz )

t = 0.000143

t = 1.43 x 10⁻⁴ s

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