Yes , the response of the light bulb depend on how fast you move the bar magnet
Flux is the presence of a force field in a specified physical medium, or the flow of energy through a surface
Lenz's law states that the induced electromotive force with different polarities induces a current whose magnetic field opposes the change in magnetic flux through the loop in order to ensure that the original flux is maintained through the loop when current flows in it.
Yes, waving a magnet around does create an electromagnetic wave which does affect the light bulb .
Due to motion of the bar, there will be a constant change in flux and due to Lenz's Law a current within the coil will be induced . This induced current can be used to power the light bulb.
As we know that the greater the speed, the greater the magnitude of the current, and the current is zero when there is no motion.
There will be change in brightness as the bar moves with faster speed.
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A basketball player has a 0. 603 probability of making a free throw. if the player shoots 10 free throws, what is the probability that she makes exactly 6 of them?
The probability that she makes 6 of them is 0.242
Simply put, the probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.
A basketball player has a probability = 0. 603
The player shoots 10 free throws.
Let x be a random variable that represents the number of free throws made by a basketball player.
x ≈ Binomial (n,p)
p = 0.603
n= 10
P(x=k) = [tex]_nC_k p^k (1-p)^{n-k}[/tex]
P(6) [tex]= _1_0C_6 (0.603)^6 (1-0.603)^{10-6}[/tex]
[tex]=210 (0.048) (0.397)^4[/tex]
[tex]=210 (0.048)(0.024)[/tex]
[tex]= 0.242[/tex]
Therefore, the probability that she makes 6 of them is 0.242
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The earliest astronomical records appear to have been made by the ancient chinese, egyptians, and babylonians in order to?
The earliest astronomical records appear to have been made by the ancient Chinese, Egyptians, and Babylonians in order to determine when to hunt plants and animals
A conceptual investigation of the properties of astronomical records and the links that exist between various types of data yields an astronomical records data model.
The paintings on cave walls that date back 30,000 years are the earliest records of astronomical observations that we have. The night sky piqued their keen curiosity in the ancient Egyptians. They were particularly captivated by two bright stars that were constantly seen orbiting the North Pole.
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Newton’s ____________ law of motion states that the acceleration of a person or object is proportional to the force applied to it and inversely proportional to its mass.
Newton’s second law of motion states that the acceleration of a person or object is proportional to the force applied to it and inversely proportional to its mass.
What is (a) the wavenumber and (b) the wavelength of the radiation used by an fm radio transmitter broadcasting at 92. 0 mhz?
The wavenumber and (b) the wavelength of the radiation used by an fm radio transmitter broadcasting at 92. 0 mhz will be 31.25 * [tex]10^{2}[/tex] [tex]m^{-1}[/tex] and 0.032 * [tex]10^{2}[/tex] m respectively
Forms of electromagnetic radiation like radio waves, light waves or infrared (heat) waves make characteristic patterns as they travel through space. Each wave has a certain shape and length. The distance between peaks (high points) is called wavelength.
Wavenumber, also called wave number, a unit of frequency, often used in atomic, molecular, and nuclear spectroscopy, equal to the true frequency divided by the speed of the wave and thus equal to the number of waves in a unit distance.
wavelength = ?
frequency = 92 m Hz = 92 * [tex]10^{6}[/tex] Hz
speed of light = 3 * [tex]10^{8}[/tex] m/s
speed of light = frequency * wavelength
wavelength = speed of light / frequency
= 3 * [tex]10^{8}[/tex] / 92 * [tex]10^{6}[/tex]
= 0.032 * [tex]10^{2}[/tex] m
wavenumber = 1 / wavelength
= 1 / 0.032 * [tex]10^{2}[/tex] m
= 31.25 * [tex]10^{2}[/tex] [tex]m^{-1}[/tex]
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what psychology tries to find the best ways to design products for people to use
Answer:
so it could be attractive for consumers
Imagine that heike onnes cooled mercury down to absolute zero and there was still resistance. would he have discovered superconductivity? yes, because he was working with mercury, which has superconductive properties yes, because he would have observed it at 4.2 k no, because superconductivity cannot occur in mercury since it is a liquid no, because superconductivity cannot occur if there is resistance
No, because superconductivity cannot occur if there is resistance
In addition to explaining electrical resistance, equilibrium distance theory also foretells the existence of superconductivity. According to its postulates, electrical resistivity decreases with distance from the equilibrium. There is only superconductivity at zero distance, with no resistance
What is Superconductivity ?The ability of some materials to transmit electric current with virtually little resistance is known as superconductivity.
This ability has intriguing and maybe beneficial ramifications. Low temperatures are necessary for a material to exhibit superconductor behaviour. H. K. made the initial discovery of superconductivity in 1911.Aluminum, magnesium diboride, niobium, copper oxide, yttrium barium, and iron pnictides are a few well-known examples of superconductors.Learn more about Superconductivity here:
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Which of the following identifies the cause and effect relationship shown in the data?
A
An increase in light intensity causes an increase in electric current.
B
An increase in light intensity causes a decrease in electric current.
C
An increase in electric current causes an increase in light intensity.
D
An increase in electric current causes a decrease in light intensity.
An increase in light intensity causes an increase in electric current.
The rate of electron passage in a conductor is known as electric current. The ampere is the electric current's SI unit. Electrons are little particles that are part of a substance's molecular structure. These electrons can be held loosely or securely depending on the situation.
Electric current is measured in a SI unit known as an ampere, or A. It is determined by assuming that the elementary charge, e, has a fixed numerical value of 1.602 176 634 x 10-19 when expressed in unit C, which is equivalent to the second in terms of VCs.
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A tortoise can move with a speed of 10.0cm/s, while a rabbit can move 10 times faster. In a race, both of them started at the same time, but the rabbit stopped to rest for three minutes. The tortoise wins by a distance of 10cm from the rabbit. How long is the race?
A. 125.2s
B. 159.8s
C. 199.9s
D. 205.7s
Answer:
C. 199.9 s
Explanation:
3 minutes = 3×60 = 180 seconds.
the turtle moves in that time 180×10 = 1800 cm.
in other words the rabbit gave it that much head-start (it does not matter if that was at the begin of in the middle of the race).
the rabbit moves with 10×10cm/s = 100cm/s.
the rabbit needs therefore 1800/100 = 18 seconds for the
1800 cm.
at that time the turtle has added another 18×10 = 180 cm.
for which the rabbit needs 180/100 = 1.8 seconds.
during that time the turtle has added 1.8×10 = 18 cm.
and so on.
in formal mathematics this looks like this :
1800 + 10x = 100x
after x seconds of the rabbit running both will have run the same distance, and it is a tie.
1800 = 90x
x = 20 seconds
so, at that point, the rabbit was actively running for 20 seconds and raced 20×100 = 2000 cm
and the turtle was actively running for 180 + 20 = 200 seconds, and also covered 200×10 = 2000 cm.
but our question tells us that the turtle won by 10 cm.
so, the race was over a little bit before these 200 seconds (for a tie).
this means, the rabbit could not run the last 10 cm for the tie (because the race was over and the turtle had won).
the rabbit would have needed 10/100 seconds for these 10 cm.
as speed = distance/time
we need to divide distance by speed
distance/1 / distance/time
to get time.
so,
10cm/1 / 100cm/s = 10s/100 = 1/10 s
so, we need to deduct this 1/10 s from the 200 seconds of the turtle (and also from the 20 seconds for the rabbit).
the race lasted of course the whole time the turtle was running (while the rabbit was resting, officially still participating in the race with speed 0 for 3 minutes).
and so, the race was 199.9 s long.
John and henry are both workers at a retail store. their direct supervisor has told them to maintain quick service above all else. later, their customer relations director tells them that they should always work to maintain excellent customer service above all else. both john and henry are confused as to what their priorities should be. this is an example of a conflict based on ______. a. personality differences b. power struggle c. poor communication d. jealousy please select the best answer from the choices provided a b c d
Poor communication
This is an example of a conflict based on poor communication. Because of the reason is that in customer service a person should have skills to communicate in a good manner. It is important because if the person has this skill that he can communicate with others best.
Then he can impress the customer and realize customer about the qualities of their product. In every kind of business, communication skills play major role. Therefore, both john and Henry are confused as their priorities should be on focus to improve their communication skills.
What is poor communication ?When there is a disconnect between what is said and what is heard, poor communication frequently results. In other words, the individual to whom the communication is being directed misinterprets what you are trying to convey. There is no longer mutual understanding.
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The direction of the net electric force that acts on an electric charge at every point of an equipotential surface created by other charges must be?
The direction of the net electric force that acts on an electric charge at every point of an equipotential surface created by other charges must be perpendicular to the surface.
A surface with an equipotential potential is one where all points on the surface have the same electric potential. This means that at every point on the equipotential surface, a charge will have the same potential energy.
The repulsive or attractive interaction between any two charged bodies is called as an electric force. Similar to any force, its impact and effects on the given body are described by Newton's laws of motion. The electric force is among the list of other forces that exert over objects.
On an equipotential surface , the potential difference between any two points is zero. So , the work done by the electric field on a test charge moving on the surface will be zero. Therefore , the electric field must be perpendicular to the surface at every point . Hence electric force must have the same direction , that is perpendicular to the surface.
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What is the relationship between acceleration and time a(t) for the model rocket (v(t)=αt3 βt γ, where α=−3. 0m/s4, β=36m/s2, and γ=1. 0m/s)?
The relationship between acceleration and time a(t) for the model rocket v(t)=αt³ + βt + γ, where α=−3. 0m/s4, β=36m/s2, and γ=1. 0m/s is a(t) = -9t² + 36 m/s²
The differentiation of velocity with respect to time gives acceleration.
Velocity of a rocket model is the speed acquired of the body in a particular direction.
Acceleration of the body is the change in velocity with respect to time.
v(t)=αt³ + βt + γ
On differentiating,
a = 3αt² + β
Given, α=−3. 0m/s⁴
β=36m/s²
γ=1. 0m/s
On subsituting,
a = 3(-3)t² + 36 m/s²
Hence, relationship between acceleration and time a(t) = -9t² + 36 m/s²
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The ________ represents the complete range of frequencies of light energy from radio waves to cosmic rays
Electromagnetic spectrum represents the complete range of frequencies of light energy from radio waves to cosmic rays.
What is electromagnetic spectrum?
Electromagnetic spectrum is nothing but the complete range of electromagnetic radiation, classified by frequency or wavelength.
What are Electromagnetic waves?When an electric field interacts with a magnetic field, electromagnetic waves are created. Therefore, they are referred to as "electromagnetic" waves.
The following are Electromagnetic waves in order:these are ranging from highest to lowest energy
gamma rays X-rays ultraviolet radiation visible light infrared radiation microwaves radio waves.Properties of Electromagnetic wave:are transverse waves that can pass through a vacuum move at the same speed—300,000,000 m/s for light—when moving through one.electromagnetic waves, like all waves:energy transfer from one location to another it can also be reflected it can be refracted.In the electromagnetic spectrum, each are different from:frequencywavelengthTo learn more about Electromagnetic spectrum visit:
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Stellar occultations are the most accurate way to measure the _________ of a solar system object
Answer:
del mundo
Explanation:
Select all the correct answers. a leaf falls through the air, floating as it falls. air resistance is visibly affecting the leaf. which two properties of the leaf are allowing it to be affected by air resistance? acceleration due to gravity initial distance from the ground mass surface area
Surface area and Mass
When a leaf falls, it is being accelerated by gravity to the ground but opposed by air resistance also the drag. The net force on a leaf will therefore be calculated by subtracting its weight of the leaf from its drag.
What is Air resistance ?Air exerts a force known as air resistance. When an object is travelling through the air, the force works in the opposite direction.
While a sports vehicle with a streamlined design will encounter reduced air resistance and experience less drag, the automobile will be able to move more quickly than a truck with a flat front.The speed, area, and shape of the object passing through the air all affect air resistance. Air density and resistance are affected by altitude, temperature, and humidity. The resistance increases with speed and area, respectively.Learn more about Air resistance here:
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A stationary observer observes a spaceship fly-by. As the spaceship's velocity gets closer to the speed of light, the stationary observer:
A stationary observer observes a spaceship fly by. As the spaceship's velocity gets closer to the speed of light, the stationary observer would see the spaceship as being “blue-shifted” on the visible light spectrum.
This would also lead to the feeling of a faster time on the clock.
What is the Speed of Light?
This refers to the speed in which light waves propagate through different materials.
Hence, we can see that based on the fact that the observer is stationary and is observing a spaceship that is in outer space get to the speed of light, the stationary observer would see the spaceship as being “blue-shifted” on the visible light spectrum.
This is because the observer would come to the conclusions that the
Earth would appear blue-shifted its clocks would be moving more quickly than expected.
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Calculate the energy of the violet light emitted by a hydrogen atom with a wavelength of 410. 1 nm
The energy of the violet light emitted by a hydrogen atom with a wavelength of 410. 1 nm will be 4.85 * [tex]10^{-19}[/tex] J
Light energy is a form of electromagnetic radiation that comprises wavelengths that the common human eye can detect. Light is a type of kinetic energy. It consists of particles like photons, which have wave-like properties. It can affect the physiology of an organism, like photosynthesis or the sense of sight.
Energy = h*c / lambda
where
h = plank's constant = 6.626 * [tex]10^{-34}[/tex] J-s
c = speed of light = 3 * [tex]10^{8}[/tex] m/s
lambda = wavelength = 410. 1 nm = 410. 1 * [tex]10^{-9}[/tex] m
Energy = 6.626 * [tex]10^{-34}[/tex] * 3 * [tex]10^{8}[/tex] / 410. 1 * [tex]10^{-9}[/tex]
= 4.85 * [tex]10^{-19}[/tex] J
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Twelve seconds after starting from rest a freely-falling cantaloupe has a speed of_______.
Twelve seconds after starting from rest a freely falling of cantaloupe has a speed of 114 m/s
When a body moves exclusively under the influence of the Earth's gravity, it is said to be in freefall. The motion of the ball will be accelerated as a result of an external force acting on it. This free-fall acceleration is also known as acceleration due to gravity.
The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics.
from kinematic equation of motion`
v = u+ at
=u + gt (The acceleration for a free-falling object is g)
since, starting from rest
initial velocity = u = 0
time = 12 seconds
g= 9.81 m/ [tex]s^{2}[/tex]
v = u + gt
= 0 + 9.8 * 12
= 117.6 m/s
≈ 118 m/s
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A spaceship travels at approximately 0. 25c with respect to earth. this means 24 hours at the spaceship will be x hours to us on earth. find the time passed ton earth
The time passed on earth is mathematically given as
t' = 24.79 hrs
What is the time passed on earth?
Generally, the equation for is time mathematically given as
[tex]t' = \gamma t[/tex]
Where
[tex]\gamma = Lorentz\ factor \\\\\gamma = 1/ \sqrt {(1 - v^2/c^2)}[/tex]
[tex]t' = t/ \sqrt {(1 - v^2/c^2)}[/tex]
Therefore
[tex]t' = 24/ \sqrt {(1 - (0.25c/c)^2) }[/tex]
[tex]t'= 24/ \sqrt {(1 - 0.25^2)[/tex]
t' = 24.79 hrs
In conclusion, the time passed on earth
t' = 24.79 hrs
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Our milky way galaxy is 100000 lyly in diameter. a spaceship crossing the galaxy measures the galaxy's diameter to be a mere 1. 0 lyly. what is the speed of the spaceship relative to the galaxy?
The speed of the spaceship relative to the galaxy is 0.99999995c.
A light-year measures distance rather than time (as the name might imply). A light-year is a distance a light beam travels in one year on Earth, which is roughly 6 trillion miles (9.7 trillion kilometers). One light-year equals 5,878,625,370,000 miles. Light moves at a speed of 670,616,629 mph (1,079,252,849 km/h) in a vacuum.We multiply this speed by the number of hours in a year to calculate the distance of a light-year (8,766).
The Milky way galaxy is 100,000 light years in diameter.
The galaxy's diameter is a mere 1. 0 ly.
We know that ;
[tex]L = L_0 \sqrt{1-\frac{v^2}{c^2} }[/tex]
L = 1 light year
L₀ = 100,000 light year
[tex]1 = 100,000 \sqrt{1-\frac{v^2}{c^2} }[/tex]
[tex]1 = 100,000 \sqrt{1-\frac{v^2}{(3*10^8)^2} }[/tex]
[tex]\frac{1}{100,000} = \sqrt{1-\frac{v^2}{c^2} }[/tex]
[tex]v = 0.999999995[/tex] [tex]c[/tex]
Therefore, the speed of the spaceship relative to the galaxy is 0.99999995c.
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The lowest frequency of a guitar string with a length 0. 65 m is 248 hz. what is the speed of the wave on this string?
The speed of the wavelength on this string 322.4 m/s.
Given,
Half wavelength = 0.65m,
So, Wavelength = 2*.65=1.3m, frequency=248Hz
Speed=wavelength*frequency=1.3*248=322.4 m/s.
WavelengthThe wavelength, or spatial period, of a periodic wave in physics refers to the length over which the wave's structure repeats. It is the separation between neighbouring wave points that correspond to the same phase, such as two adjacent crests, troughs, or zero crossings. It is a property of both travelling waves and standing waves as well as other spatial wave patterns. The spatial frequency is the wavelength's reciprocal. The Greek letter lambda (), which represents wavelength, is frequently used. When describing modulated waves, their sinusoidal envelopes, or waves created by the interference of several sinusoids, the term wavelength is also occasionally used.
The lowest frequency of a guitar string with a length 0. 65 m is 248 hz. what is the speed of the wave on this string?
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A glass fiber carries a light digital signal long distances with a minimum loss of amplitude. What optical property of glass allows this phenomenon?
Reflection is the optical property of glass that allows this phenomenon.
Reflection of light:Light can be carried along a distance within a transparent material by means of total internal reflection, with a minimum loss of amplitude.
(incident angle>critical angle light is reflected/bounces off)
When waves of light (and other electromagnetic radiation) come into contact with a surface or other boundary that does not absorb the radiation's energy, the waves bounce off the surface and back into space. The angle of incidence and angle of reflection are equal when light rays strike a flat surface, and the incident ray, the reflected ray, and the surface normal all lie in the same plane. There are three categories of reflection: glossy, specular, and diffuse.
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The mechanical energy of a system of objects is conserved: Group of answer choices only when the objects move along closed paths none of the above only when the work done by the resultant external force is zero only when external forces act on the objects always
The mechanical energy of a system of objects is conserved only when the work done by the resultant external force is zero.
What is mechanical energy?Mechanical energy is a special class of energy that an object contains due to its relative position or motion/movement level.
This type of energy (mechanical energy) is associated with both kinetic motion energy and potential (stored) energy.
In conclusion, the mechanical energy of a system of objects is conserved only when the work done by the resultant external force is zero.
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An astronomer is studying galaxies of stars that are very far away and thus look extremely faint (using visible light). What kind of telescope should she and her graduate students apply for time on?
If the galaxies that are being studied are very far away, it follows that the telescope with the biggest aperture possible should be used.
What is a telescope?A telescope is a device that is used for the study of the outer space. The telescope can be mounted in an observatory and then used to observe the various galaxies that exist out there in space.
There are various kinds of telescopes that could be used for different kinds of studies that take place in outer space and these telescopes are quite responsible for the breakthroughs that we have so far experienced in the study of the occurrences in outer space.
Thus, if the galaxies that are being studied are very far away, it follows that the telescope with the biggest aperture possible should be used.
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A tumbleweed rolls from x equals 25.6 m to x equals -14.4 m in 7.90 seconds what was its average velocity
Answer:
5.06 m/s
Explanation:
velocity = distance / time
= ( 25.6 - - 14.4) / 7.90 = 5.06 m/s
Calculate the gravitational potential energy is a bicycle of mass 20kg and its rider of mass 50kg cycle to the top of a hill 120 metres high.
Explanation:
Gravitational Potential Energy can be calculated with the following formula:
[tex]mgh[/tex]
Where m is mass, g is Gravitational Field Strength, and h is height. GFS on Earth is always 9.81, the combined mass of the cyclist and the bicycle is 70, and the height is 120. Multiplying these values together, we get:
82,404J.
When a flashlight is operated, what is being used up: battery current, battery voltage, battery energy, battery power, or battery resistance? explain
It is the battery energy that is being depleted.
To find the answer, we need to know about the, battery energy.
What is battery energy?Charges have a significant potential energy as they exit the battery terminal. The potential energy of the charges is then lost when they pass through the flashlight bulb. By reducing its chemical potential energy, the battery uses a chemical reaction to replace the potential energy of the charges. A battery can no longer provide potential energy to charges after it is depleted.Thus, we can conclude that, It is the battery energy that is being depleted.
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If the resistance in a circuit connected to a constant current is halved, how is the voltage in the circuit affected?.
The voltage remain constant
According to Ohm's Law:
V = IR
If we halved the resistance let:
R'=R/2
then
I'=21 in order to kept the Voltage same. Also the resistance is the opposition to the current. So, if resistance will halved then obviously current will double
So when we put these value in to Ohm's Law the results is:
V'=I'R'
V'=21(R/2)
V'-IR which is equal to first voltage. Hence,
V'=V
So, the voltage remains same
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Write an expression for elastic potential energy of a spring?
[tex]\huge\underline{\underline{\boxed{\mathbb {SOLUTION:}}}}[/tex]
[tex]\leadsto[/tex] The elastic potential energy of a spring can be said to be the energy possessed by a spring due to a force that compresses or stretches the spring. This can also be said to be the work which is done by the applied force against the restoring force of the spring, which is stored as the elastic potential energy.
The elastic potential of a spring can be expressed as:
▪ [tex]\longrightarrow \sf{PE= \: \dfrac{1}{2} kx}[/tex]
[tex]\huge\underline{\underline{\boxed{\mathbb {ANSWER:}}}}[/tex]
[tex] \bm{PE= \: \dfrac{1}{2} kx}[/tex]
At what distance from a 27 mw point source of electromagnetic waves is the electric field amplitude 0. 060 v/m ?
The distance from a 27 mw point source of electromagnetic waves where the electric field amplitude 0. 060 v/m will be 21.21 m .
Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.
The highest point of a wave is known as 'crest' , whereas the lowest point is known as 'trough'. Electromagnetic waves can be split into a range of frequencies. This is known as the electromagnetic spectrum.
c = 3 * [tex]10^{8}[/tex] m/s
∈ = 8.85 * [tex]10^{- 12}[/tex] [tex]C^{2}[/tex] / N/ [tex]m^{2}[/tex]
E = 0. 060 v/m
I = P / 4π[tex]r^{2}[/tex]
Also , I = c ∈ [tex]E^{2}[/tex] /2
[tex]r^{2}[/tex] = P / 4π I equation 1
substituting the value of I in equation 1
[tex]r^{2}[/tex] = 2 P / 4π (c ∈ [tex]E^{2}[/tex] )
[tex]r^{2}[/tex] = 2 * 27 * [tex]10^{-3}[/tex] / 4 * 3.14 * 3 * [tex]10^{8}[/tex] * 8.85 * [tex]10^{- 12}[/tex] * [tex](0.06)^{2}[/tex]
r = 21.21 m
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Select the correct answer from the drop-down menu. anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force? the forces acting on the toy car are .
Answer:
The forces could be gravity, friction between the car and the ground, the force Katie is applying and the normal reaction.