what are the necessary condition for the production of sound

The difference in point of view that occurs when the lens (or other device) through which the eye views a scene is separate from the lens that exposes the film is called the parallax effect.

Parallax effect is an interactive technique used by web developers to create a visually engaging experience for users. It works by having the background move at a slower speed than the foreground when the user scrolls down the page. This creates an illusion of depth, as if the user is looking into the scene from different angles. The effect is especially popular for creating immersive experiences such as 3D games, virtual tours, and interactive storytelling. Parallax effect can be used to bring websites to life, offering users an engaging and dynamic experience. It is also a great tool for storytelling, helping to convey emotion and create a unique visual experience.

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Answer:

30m/s

Explanation:

given : 108 km/hr

1km/hr = (1000/3600) m/sec

    = 5/18 m/sec

108km/hr  = 108 * 5/18 m/sec

         = 30 m/sec

Answer:

4.17

Explanation:

We started at 95 and went down to 50 in 3 seconds.

The change in volocity would be about -45 km

distance traveld maybe 60

And power around 83.9 kw

I might be wrong so im sorry if I am.

I have not done this in a while.

Temperature rise will be there in cylinder B more than in cylinder A because of internal energy.

what is internal energy?

The sum of the kinetic and chemical potential energies of all the particles in the system is the internal energy. Particles accelerate and pick up kinetic energy when energy is applied to increase the temperature.

Briefing:

Cylinder A uses the heat it absorbs to both work while expanding and to increase internal energy (or temperature).

While cylinder B solely uses the heat it absorbs to increase its internal energy 

As a result, cylinder B's temperature rise is greater than cylinder A's.

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Answer:

a

Explanation:

A metallic enclosure that prevents the entry or escape of an electromagnetic field is known as a Faraday cage. A Faraday cage is named after the English scientist Michael Faraday, who discovered the principle of electromagnetic induction.

A Faraday cage is a metallic enclosure that is designed to block external electromagnetic radiation from entering the enclosed space and to prevent electromagnetic radiation generated inside the enclosure from escaping.

The Faraday cage works by redistributing the electromagnetic field so that it cancels out the external field or reflects it away from the enclosed space. This is achieved through the conductive properties of the metal enclosure, which allows the electric charge to flow freely across its surface, creating an equal and opposite charge that cancels out the external field.

Faraday cages are commonly used in various applications, including electronic testing, electrical engineering, and scientific research, to protect sensitive equipment and experiments from interference caused by external electromagnetic radiation.

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Answer:

It can hurt you if you get a carpet burn if you rub against carpet really fast and hard. It can help by keeping your shoes from slipping around all the time when you walk/run. Same with bike tires.

Explanation:

When we convert 4900mm from two-step dimensional analysis it would be 490 cm and 5.59kL to 5923.667 quarts.

Dimensional Analysis is a technique for analysis where physical quantities are expressed in terms of their basic dimensions and is frequently applied when there is insufficient data to create accurate equations.

As given in the problem we have to convert

4900mm to cm

As we know that there  are 1000 mm in 1 m

1000 mm = 1 m

4900 mm = 4.9 m

1 m = 100 cm

4.9 m = 4.9×100

          =490 cm

As we have to convert 5.59kL to quarts

1 Kiloliter =  1056.69 US liquid quart

5.59kL    = 5.59 ×1056.69 quarts

               =5923.667 quarts

Thus, we converted 4900mm to 490 cm and 5.59kL to 5923.667 quarts.

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DIVIDE 1 BY 86400 TO CONVERT 1 SECOND INTO SOLAR DAY.

Answer:

\(p=10\:\text{kgm/s}},\\v_f=1\:\text{m/s}\)

Explanation:

From Newton's 2nd Law, we have \(\Sigma F=ma\). We can use this to find the acceleration of object after 20 N (force) is applied to the 10 kg object.

Substituting given values, we have:

\(\Sigma F=ma, \\20=10a,\\a=\frac{20}{10}=2\:\mathrm{m/s^2}\)

Now that we have acceleration, we can find the final velocity of object (after 0.5 seconds) using the following kinematics equation:

\(v_f=v_i+at\), where \(v_f\) is final velocity, \(v_i\) is initial velocity, \(a\) is acceleration, and \(t\) is time.

Solving for final velocity:

\(v_f=0+2\cdot 0.5,\\v_f=\boxed{1\:\text{m/s}}\)

The momentum of an object is given as \(p=mv\). Since we've found the final velocity and mass stays constant, we have:

\(p=10\cdot 1=\boxed{10\:\text{kgm/s}}\)

The solubility of the sample will decrease

False

The Pressure Gradient Force (PGF) is the force that drives air from areas of high pressure to areas of low pressure. In both a trough and a ridge, the PGF is the same.

However, the winds will not be the same in both features.  

In a trough, the winds tend to move towards the center of the trough, where the air is rising, and this causes convergence and lifting. This upward motion causes a decrease in pressure, leading to a steeper pressure gradient, which means stronger winds. On the other hand, in a ridge, the winds move away from the center of the ridge, where the air is sinking, and this causes divergence and sinking. This sinking motion causes an increase in pressure, leading to a weaker pressure gradient and lighter winds.  

Therefore, assuming the same PGF, the trough will have the faster winds compared to the ridge.

Earth has a definite orbit within the solar system whose the orbit is mainly a result of the mass of the Sun.

An orbit is defined as the regular, repeating path that one object in space takes around another while an object in an orbit is called a satellite which may be natural, such as the Earth or the Moon. According to the height of satellites from the earth, these orbit are classified as

Most of the weather and some communications satellites will tend to have a high Earth orbit which is farthest away from the surface. The main difference between orbit and orbitals is that the former is defined as a fixed path of electron revolutions, whereas the latter is defined as an uncertain region with a high probability of finding an electron.

Therefore, the Earth has a definite orbit within the solar system whose the orbit is mainly a result of the mass of the Sun.

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Answer:

The formula is W=mg.

1.) W=40×10=400.

2.)W=40×5=200.

3.)W=40×150=6000.

The spectacle lens would have a power of -2.00 diopters that is is needed to correct the vision of a nearsighted person whose far point is 49.7 cm.

1.) Determine the power of the spectacle lens needed to correct the vision of a nearsighted person.

P = 1/f

P = 1/49.7 cm

P = 0.02 D

2.) Convert the power of the spectacle lens to diopters.

P = 0.02 D

1 D = 100 cm

P = -2.0 diopters

" - " indicates a diverging / concave lens as expected.

A diverging lens is a lens that causes light to spread out, or diverge. A concave lens is a lens that is curved inward. These lenses are used to correct vision problems such as myopia, or nearsightedness.

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the final temperature T2 is equal to one-third of the initial temperature T1. The final volume V2 remains the same as the initial volume V1 since it is an isochoric process.

In an isochoric process, the volume remains constant (V1 = V2), which means the gas does not expand or contract. We are given that the final pressure p2 is 1/3 of the initial pressure p1 (p2 = 1/3 p1).Using the ideal gas law, we have:p1 V1 / T1 = p2 V2 / T2.Since V1 = V2, we can simplify the equation to:p1 / T1 = p2 / T2.

Substituting the given values, we have:p1 / T1 = (1/3 p1) / T2.To solve for T2, we rearrange the equation:T2 = (T1 * p2) / p1.Plugging in the values, we have:T2 = (T1 * (1/3 p1)) / p1,T2 = T1 / 3.

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Answer:101.325 kilopascals

Explanation:

False. When you put air into a balloon underwater at 10 meters/33 feet and then bring it to the surface, the air inside the balloon will not expand to twice its size. The volume of the balloon will increase, but not by a factor of two.

The change in volume of the balloon is determined by Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at constant temperature. As you bring the balloon from a higher pressure environment (underwater) to a lower pressure environment (surface), the pressure inside the balloon decreases. According to Boyle's Law, the volume of the gas will increase, but not necessarily double.

The exact change in volume depends on the specific conditions, such as the initial pressure, temperature, and the gas inside the balloon. However, it is important to note that the increase in volume will not be an exact doubling.

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The statement is true. Boyle's Law explains the expansion of the air in the balloon when it is brought to the surface from a depth of 10 meters/33 feet.

This statement is true.

According to Boyle's Law, the pressure and volume of a gas are inversely proportional when the temperature is kept constant.

When the balloon is filled with air at a depth of 10 meters/33 feet, the pressure exerted by the water at that depth compresses the air inside the balloon. As the balloon rises to the surface, the pressure decreases, causing the air inside the balloon to expand.

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The temperature can rise 234° C in each of the four 3.5 kg steel brake disks.

Energy cannot be created or destroyed, according to the law of conservation of energy. However, it is capable of change from one form to another. An isolated system's total energy is constant regardless of the types of energy present.

According to law of conservation of energy:

1/2 × 1600 × 42.8² = 4 × 3.5 × 448 × Δt

Δt = (1600 × 42.8² )/( 2 ×  4 × 3.5 × 448)

Δt = 234° C.

Hence, the temperature can  rise 234° C in each of the steel brake disks.

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The force on the cork is the weight of all the water that's directly over it. That's the water in a tall, skinny cylinder that's 2.0m long and has a base area of 2 cm^2.

Find the volume of that cylinder, use the density to find the mass of the water in that volume, then m•g to find the weight of that mass.

As the distance from the magnet increases, the magnetic field decreases, and the magnetic force exerted by it weakens.

The strength of a magnetic field diminishes with distance due to the spreading out of the magnetic field lines. This decrease in the magnetic field directly affects the magnetic force exerted on objects, causing it to diminish as well.

Understanding the relationship between distance, magnetic field, and magnetic force is important for various applications. It allows us to predict how magnets will interact with each other or with other magnetic materials at different distances, providing insights into phenomena such as attraction, repulsion, and magnetic field strength. By studying this relationship, scientists and engineers can design and optimize magnetic systems for practical purposes, ranging from electric motors and generators to magnetic storage devices and magnetic resonance imaging (MRI) technology.

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The dominant wavelength of energy emitted by the sun is shorter than that emitted by Earth.

All objects with temperatures above absolute zero emit electromagnetic radiation.

The spectrum of the radiation emitted by an object is determined by its temperature; the hotter the object, the higher the frequency of the emitted radiation. Sun's temperature is around 5,500 degrees Celsius, while Earth's temperature is just over 15 degrees Celsius.

Thus, the dominant wavelength of energy emitted by the sun is shorter than that emitted by Earth.

Summary: Therefore, the answer to the question "the dominant wavelength of energy emitted by the sun is" is that the dominant wavelength of energy emitted by the sun is shorter than that emitted by Earth.

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The kinetic energy of the car is four times greater at the bottom than it is at the top. At the base of the hill, the car's kinetic energy is 1800 joules.

The momentum an object has as a result of motion is known as kinetic energy. We must exert force on an object if we desire to accelerate it. To apply a force, we must exert effort. Once the work is finished, the objects will be moving because energy has now been transferred to it.

Describe that a travelling internal force and speed are major factors that impact the amount of kinetic energy it will possess. Partially particles can result in the loss of kinetic energy through frictional, sound, and heat.

k = 1 /2 mv²

K = 1 /2 (100 kg) (3 m/s)²

= 450 J

K = 1 /2 (100 kg) (6 m/s)²

k = 1800 J

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(a) The magnitude of the deceleration of each of the cars is a=f/m=μk mg/m=μkg. If a car stop in distance d , then its speed ν just after impact is obtained from Eq. 2−16 :

Since ν0=0 (this could alternatively have been derived using Eq. 8−31 ). Thus,

νA= \(\sqrt2μkgdA\) = \(\sqrt2(0.13)(9.8m/s 2 )(8.2m)\) =4.6m/s .  

(b) Similarly , νB= \(\sqrt2μkgdB\)= \(\sqrt(2(0.13)(9.8m/s2)(8.2m))\) =4.6m/s .

(c) Let the speed of car B be ν  just before the impact. Conservation of linear momentum gives

mB ν=mA νA + mB ​νB, or

ν= \(\frac{(mA νA + mB νB)}{mB}\)= \(\frac{(1100)(4.6)+(1400)(3.9)}{1400}\)=7.5m/s

Linear momentum, also known as momentum, is a vector quantity that describes the motion of an object. It is defined as the product of an object's mass and its velocity. The unit of momentum is kilogram meter per second (kg m/s). Linear momentum is a conserved quantity, meaning that the total momentum of a system of objects remains constant if no external forces act upon it. This principle is known as the law of conservation of momentum and it is a fundamental concept in classical mechanics.

The momentum of an object can be changed by applying a force on it, causing the object to accelerate. The greater the mass of an object and the faster it is moving, the greater its momentum. Understanding linear momentum is important in various fields including physics, engineering, and sports, where it is used to analyze the motion of objects and predict the outcome of collisions.

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Complete Question: -

In the before part of Fig. 9-60, car A (mass 1100kg ) is stopped at a traffic light when it is rear-ended by car B (mass  1400kg ). Both cars then slide with locked wheels until the frictional force from the slick road (with a low μ k of 0.13) stops them, at distances dA = 8.2m  and dB = 6.1m. What are the speeds of (a) car A and (b) car B at the start of the sliding, just after the collision? (c) Assuming that linear momentum is conserved during the collision, find the speed of car B just before the collision.

The maximum particle velocity is equal to four times the wave velocity when the amplitude multiplied by π is equal to twice the wavelength.

If we consider the equation of a transverse wave, the maximum particle velocity (V_particle) can be found using the equation:

\(V_particle = A * ω\)

where A is the amplitude of the wave and ω is the angular frequency.

The wave velocity (V_wave) can be determined using the equation:

\(V_wave = λ * f\)

where λ is the wavelength and f is the frequency.

Given that the maximum particle velocity is equal to four times the wave velocity, we have:

\(V_particle = 4 * V_wave\)

Substituting the expressions for V_particle and V_wave, we get:

\(A * ω = 4 * (λ * f)\)
Now, we know that ω = 2πf, so we can rewrite the equation as:

\(A * 2πf = 4 * (λ * f)\)

To find the value for which this equation holds true, we can divide both sides by 2f, giving:

\(A * π = 2 * λ\)

Thus, the maximum particle velocity is equal to four times the wave velocity when the amplitude multiplied by π is equal to twice the wavelength.

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Answer:

the middle part of the magnet

Explanation:

The middle part

The magnetic force is least or minimum at the two poles (North pole and South pole) of a magnet.

The region within which the force of magnetism operates around a magnetic substance or a moving electric charge is known as the magnetic field. a visual representation of the magnetic field that shows how the distribution of a magnetic force within and around a magnetic material.

The area that has magnetic force around a magnet is called the magnetic field. There are north and south poles in every magnet. While the same poles repel one another, opposite poles attract one another. The north-seeking poles of the iron's atoms align in the same direction when you rub it along a magnet.

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A high-speed transmission medium that uses a protected string of glass to transmit beams of light.

Correct answer is, True.

This refers to fiber optic cables, which use glass or plastic fibers to transmit light signals at high speeds and are protected by a sheath or jacket., faster speeds, and resistance to electromagnetic interference.

This statement accurately describes fiber-optic cables, which are high-speed transmission mediums that use glass or plastic fibers to transmit light signals. Fiber-optic cables have several advantages over traditional copper cables, including higher bandwidth.

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Answer:

ig d. transmits only green light.....