the intensity of an em wave is 10 w/m2. what will the intensity be if the amplitude of the electric field is doubled?

The, speed of the wave is A'f.

The number of complete oscillations made by a wave during a time interval of one second is defined as the frequency of the wave.

The time period of a wave is the time taken by a wave to complete one oscillation. It is the reciprocal of frequency of the wave.

The expression for speed of the wave is given by,

v = fλ

where f is the frequency and λ is the wavelength of the wave.

Here, the wavelength of the wave, λ = A'

Therefore, speed of the wave,

v = A'f

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Answer:

C

Explanation:

edge2020

Answer:

(I will talk in my opinion only)

electronics do harm our mental health but they are also helpful ones like mobile both a boon and a curse

physical health is greatly affected and it's something no need to explain

social ( for me ) my only place to be social and talk people is brainly so for me mobile is very important

Answer:

Just a little bit. You should not be on electronics all the time. I know some people that are so addicted to there electronics that they won't even hang out with people. If you are at the point where you think about things other than school, friends, and family...you should think about getting off of your electronics and go play with a neighborhood friend outside, or have a sleepover! Your whole life should not count on your phone, iPad, or your laptop.

Explanation:

Hope this helps! No recorces included in this writing.

The frictional force reduces the block's kinetic energy and causes negative work to be done on it.

Kinetic energy is the energy that a thing has when it is moving. An item can only be accelerated through the application of a force. Applying force requires effort on our part. Following completion of the work, energy is transferred towards the object, which then moves at such a new, constant speed.

Kinetic energy appears to be the driving force behind motion, as evidenced by the way objects and subatomic particles move. Every particle & moving object contains kinetic energy. Examples of kinetic energy in motion include walking, a baseball flying through the air, food falling off a table, and just a charged particle within an electric field.

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The nuisance doctrine is a legal principle that says someone who moves into a place knowing there is a nuisance there cannot later complain about the nuisance and demand compensation for it.

When a homeowner lives close to an airport, it is widely accepted that homeowner should have been aware of the potential noise and other disruptions connected with living close to an airport if the airport was already operational when the homeowner moved in. Such circumstances may make it more difficult for a homeowner to successfully file a claim for compensation based on noise pollution or other airport-related problems.

A stronger case might be made for compensation based on increased noise pollution and other negative effects caused by the airport if a homeowner moved into the neighbourhood before the airport was established and had no knowledge of or reasonable expectation of its construction. This is due to the fact that instead of "coming to the nuisance," they encountered a change in their surroundings after already settling down.

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Answer:

Sí se puede aplicar el Principio de Conservación de la Energía Mécanica siempre y cuando se considere los efectos de pérdida de energía a causa del rozamiento, de lo contrario, no se cumpliría el requisito de conservación derivado del citado principio de conservación.  

Explanation:

Consideremos que el cuerpo representa nuestro sistema de estudio, el cual se desplaza por una carretera y experimenta rozamiento, significando cambios en la energía cinética y potencial gravitacional. La presencia de rozamiento indica una disipación de la energía del cuerpo, cuya energía mecánica total disminuye, significando un sistema no conservativo.

Sí se puede aplicar el Principio de Conservación de la Energía Mécanica siempre y cuando se considere los efectos de pérdida de energía a causa del rozamiento, de lo contrario, no se cumpliría el requisito de conservación derivado del citado principio de conservación.  

When a charged conducting small sphere and an identical non-conductor (insulator) are brought near each other, they will attract each other electrically. Thus, option (c) is correct.

The correct response is (c) they electrically attract one another. This is due to the electric field that is produced by a charged conducting sphere. The electric field from the charged sphere causes a separation of charges within the non-conducting sphere when the non-conducting sphere is brought close to it.

The electric field of the charged sphere interacts with the electric field produced by the induced charges in the non-conductor. An attractive force between the spheres is produced by the interaction of the two electric fields. As a result, they will electrically attract one another. This attraction is unaffected by the type of charges—positive or negative—on the conducting sphere.

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Venn diagram should be titled traditional physics

Based on the Venn Diagram, Title 1 should be Quantum Mechanics, and Title 2 should be Traditional Physics.

A Venn Diagram is a diagram which shows the similarities as well as differences between two or more items.

Overlapping points show similarities while non-overlapping points show differences.

The Venn Diagram above illustrates Traditional physics and quantum mechanics.

Title 1 is quantum mechanics and Title 2 is Traditional physics.

Therefore, the Venn Diagram illustrates the difference and similarities between quantum physics and traditional physics.

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Answer:

No, when water converts to steam on heating, the temperature remains constant at the boiling point and the heat supplied to the water is used for the vaporisation of water, rather than increasing the temperature of water.

This energy used for the vaporisation is termed as the latent heat of vaporisation.

You’ll find similar observations if you try heating ice - the temperature remains at 0∘ Celsius. Here, it’s the latent heat of fusion.

On planets like Venus, Earth, and Mars do not see as many craters because most of them have been eroded away by wind, rain or volcanic activity. We do not see any craters Jupiter, Saturn, Uranus, and Neptune because there is no visible solid surface for the meteors to hit.

Craters heavily dominate the surfaces of Mercury and the Earth's Moon because both the bodies lack water on their surfaces that would erode impact craters with time. They also lack an atmosphere which could disintegrate meteoroids before they impact the surface.

As smaller planets have less gravitational pull as compared to large planets therefore impactors will strike at lower speeds. Greater is the mass of the impactor, greater is the size of crater. Craters are often circular.

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The relationship between work and kinetic energy and the definition of power allows to find the results for the questions about the climb of the mountain are:  

   a) The work is:   W = 6.47 10⁵ J    

   b) The time is:   t = 660 s    

   c) The power es:   P = 980 W  

   d) The time is:   t = 1.18 10³ s

The work is defined by the scalar product of force and distance and is equal to the change in kinetic energy.

           W = ΔK.

Where W is work and K is kinetic energy.

a) Let's use the conservation of energy between the base of the hill and the height.

Starting point. Lower part of the hill.  

       Em₀ = K

Final point.  The highest part of the hill      

      Em_f = U = m g h

We assume that it starts from rest in the lower part.

The energy is conserved .  

      Em₀ = Em_f    

      K = mgh

We substitute at work,  

       W = U- 0      

      W = 550 9.8 120    

      W = 6.47 10⁵ J  

b) Indicate the time it took to climb the hill t = 11 minutes. Let's reduce to seconds.      

   t = 11 min ( \(\frac{60s}{1 min}\) )      

   t = 660 s

c) The power at work per unit of time.    

      P = \(\frac{W}{t}\)          

      P = \(\frac{6.47 \ 10^5 }{660}\)    

      P = 980 W

d) The work to get to the top of the hill does not depend on time.    

       t= \(\frac{W}{P}\)        

       t =  \(\frac{6.47 \ 10^5}{ 550}\)      

       t = 1.18 10³ s

In conclusion, using the relationship between work and  kinetic energy and the definition of power, we can find the results for the questions about the climb of the mountain are:

     a) The work is:   W = 6.47 10⁵ J  

     b) The time is:   t = 660 s

     c) The power es:   P = 980 W    

     d) The time is:   t = 1.18 10³ s

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Answer:

pretty sure its A hope this helped

The guitar string undergoes 30,720 oscillations each minute, which is not among the given options. However, it is closest to option B) 30,700.

We're given that the frequency of the guitar string's vibration is 512 Hz, which means it undergoes 512 oscillations per second. We need to find out how many oscillations it undergoes each minute.
Step 1: Convert the frequency from oscillations per second (Hz) to oscillations per minute.
To do this, we'll multiply the frequency (in Hz) by the number of seconds in a minute.

Step 2: Calculate the number of oscillations per minute.
Frequency (Hz) = 512 oscillations/second
Number of seconds in a minute = 60 seconds
Oscillations per minute = (Frequency in Hz) * (Number of seconds in a minute)
Oscillations per minute = (512 oscillations/second) * (60 seconds)

Step 3: Calculate the result.
Oscillations per minute = 30720 oscillations
It is important to note that the actual answer is 30,720, but if you must choose from the given options, B) 30,700 is the closest approximation.

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The development of structures in the early universe seeded the development of galaxies.

The growth of primordial fluctuations of hot and cold dark matter gives rise to two distinct distributions of cosmic structure. In a model of hot dark matter, the heaviest structures form first and then split into smaller structures.

Dark matter is thought to have played a role in the formation of galaxies. The galaxy's mass provided most of the gravitational pull necessary to form clouds and larger structures in protogalaxies. The energy of the Big Bang caused the initial expansion of the universe. Since then, gravity and dark energy have played a cosmic tug of war. Gravity pulls galaxies together. Dark energy pulls them apart.

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The distance, s, travelled by the car is 66 m.

The distance travelled by the toy car is calculated using the formula below:

Where:

Distance, s = 5.0 * 6.0 +  2.0 * 6.0²/2

Distance,  s = 66 m

In conclusion, the distance travelled is calculated from the initial velocity, the time taken, as well as the acceleration.

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Asterisms are smaller, recognizable shapes formed by stars within a constellation or spanning multiple constellations. They can take the form of familiar objects or geometric shapes.

All stars within well-defined regions of the sky are members of constellations. These constellations are a way to organize and divide the celestial sphere into recognizable patterns.

The star in Taurus is designated Alpha Tauri, which means it is considered the brightest star in that particular constellation. Patterns of stars in the night sky are called asterisms.

Asterisms are smaller, recognizable shapes formed by stars within a constellation or spanning multiple constellations. They can take the form of familiar objects or geometric shapes.

While there are 88 official constellations recognized by the International Astronomical Union, there are countless asterisms that astronomers and stargazers observe and appreciate within these constellations.

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All stars within well-defined regions of the sky are members of constellations. The star in Taurus is designated Alpha Tauri. Patterns of stars in the night sky are called asterisms and are part of one or more constellations.

The International Astronomical Union (IAU) recognizes 88 constellations. These constellations are well-defined areas in the sky that contain groups of stars forming recognizable patterns. Some of the most famous constellations include Orion, Ursa Major (the Big Dipper), and Cassiopeia.

Asterisms, on the other hand, are smaller, distinct patterns formed by stars within a constellation or across multiple constellations. These patterns may be easily recognizable and have cultural or historical significance. For example, the Big Dipper is an asterism within the Ursa Major constellation.

In total, there are 15 asterisms that are officially recognized by the IAU. These include the Big Dipper, the Little Dipper, the Northern Cross, and the Summer Triangle.

Constellations and asterisms help astronomers navigate the night sky and locate specific celestial objects. They provide a way to organize and identify stars and other celestial bodies.

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"Planting more trees brings rain because plants transpire" is the piece of evidence from the page that support the idea that forest promote rainfall.

Water is moved through a plant during transpiration, and it is evaporated from aerial parts of the plant, such as leaves, stems, and flowers. Even though plants need water to survive, only a small portion of the water absorbed by their roots is actually utilised for cellular growth and metabolism.

Transpiration and guttation cause the remaining 97-99.5% to be lost. In most plants, the undersides of the foliage have more of the tiny pores known as stomata that decorate the surface of leaves.

The guard cells that surround the stomata are responsible for opening and closing the pore, as are their stomatal accessory cells. Transpiration occurs through the stomatal apertures and is regarded as a "cost" of the stomata opening, which allows the diffusion of carbon dioxide gas from the atmosphere for photosynthesis.

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Answer:

A dark fringe

Since distance is a scalar quantity and displacement is the vector quantity, the distance travelled is 19 m while displacement is 3 m

Displacement is the distance travels in a specific direction. It is a vector quantity. Both distance and displacement are measured in meter.

Given that Lilia rides 4 m to the school. After school she rides an extra 7 m, but then she rides an extra 8 m in the opposite direction.

The distance will be the sum of all the given parameters. That is,

Distance = 4 + 7 + 8 = 19 m

But displacement is vector quantity.

Displacement = 4 + 7 - 8 = 3 m

Therefore, the distance travelled is 19 m while displacement is 3 m

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The quarks that compose a baryon may have negative and positive charges of +(2/3)e, -(1/3)e.

A quark is a type of particle that forms protons and neutrons and combines to generate particles called hadrons.

Protons and neutrons may be formed by up quarks and down quarks that have a charge equal to -1/3e.

In conclusion, the quarks that compose a baryon may have negative and positive charges of +(2/3)e, -(1/3)e.

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Answer:

a kinetic energy

Explanation:

because it is moving

Answer:

Explanation:

Using the formula

v = fλ

v is the speed

f is the frequency

λ is the wavelength

Given the following

v = 332m/s

Frequency is the number of oscillation completed in one second. Since 332 waves passes through a medium in one second, hence the frequency us 222 Hertz

From the formula

λ = v/f

λ = 332/332

λ = 1m

Hence the wavelength is 1m

Answer and Explanation:

The computation is shown below:

The ac frequency in the United States is 60 Hz

The ac frequency in Europe is 50 Hz

So,

Time for 25 spark in United stated is 25 ÷ 60 s

Time for 25 spark in Europe is 25 ÷ 50 s

Now

Tape length in United States is

= 0.5 × 9.8 × (25 ÷ 60)^2

= 0.85 m

= 85 cm

And,  

Tape length in europe is

= 0.5 × 9.8 × (25 ÷ 50)^2

= 1.225 m

= 122.5 cm

So, As it can be seen that

= 122.5 cm - 85 cm

=  37.5 cm

Europe has 37.5 cm more than in the United States

Answer:

temperature

Explanation:

About 1.6 centimeters were cut off the end of the second pipe.

To solve this problem, we need to first understand the relationship between the fundamental frequency, length of the pipe, and speed of sound.
1. Find the initial length of the first pipe.
For a pipe open at one end, the fundamental frequency (f1) is given by the formula:
f1 = (v / 4L1)
where v is the speed of sound (343 m/s), and L1 is the length of the first pipe.

Rearranging the formula,

we can find L1:
L1 = (v / 4f1)
2. Determine the fundamental frequency of the second pipe.
Since we know the beat frequency is 12 Hz, the fundamental frequency of the second pipe (f2) can be calculated as:
f2 = f1 + beat frequency = 256 Hz + 12 Hz

= 268 Hz.
3. Find the length of the second pipe (L2) using the formula:
L2 = (v / 4f2)
4. Determine the length difference between the two pipes:
ΔL = L1 - L2
5. Convert the length difference to centimeters.
Now, let's calculate the values:
1. L1 = (343 m/s) / (4 × 256 Hz) ≈ 0.335 m
2. The fundamental frequency of the second pipe is already calculated (f2 = 268 Hz).
3. L2 = (343 m/s) / (4 × 268 Hz) ≈ 0.319 m
4. ΔL = 0.335 m - 0.319 m ≈ 0.016 m
5. ΔL in centimeters = 0.016 m × 100 cm/m ≈ 1.6 cm.

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Answer:

Two or more capacitors are said to be connected in parallel if each one of them is connected across the same two points. In a parallel combination of capacitors potential difference across each capacitor is same but each capacitor will store different charge.

Answer:

12.3°C should be the correct answer

Answer:

12.3

Explanation: