The wave is a. geometric-based
Amplitude is a geometric-based wave characteristic because it refers to the maximum displacement of a point on the wave from its equilibrium position, which is a spatial measurement.
Amplitude is the maximum distance covered by a body from the main point in the vibrating mode.
As we know that energy of the wave is directly proportional to the square of the amplitude:
E ∝ (a)²
As the amplitude of wave increases, energy carried by the wave is also increases. Higher energy increases the amplitude of the propagating wave.
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you walk 5km north for 3 hrs and 2km south for 1 hr what your speed , velocity
Answer: Probably 0.33km/hr south is the net velocity
Explanation:
Speed= Distance/ Time
Speed in North = 5km/3hrs=1.67km/hr
Speed in South= 2/1hrs=2.00km/hr
Since north and south are in opposite directions, and taking north as the +ve y, we get 1.67-2.00= -0.33km/hr, (-ve represents south direction).
Which slider makes the height of the wave decrease at it travels?
The slider that controls the height of the wave is typically labeled as "amplitude" or "height".
Adjusting this slider will either increase or decrease the height of the wave. If you want the height of the wave to decrease as it travels, you may need to use a more advanced tool or software that allows you to adjust the shape of the wave. This can be done by manipulating the wave's frequency, wavelength, and phase, among other properties.
amplitude, in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.
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The key point is that to be able to use Ampère's law, the path along which you take the line integral of B⃗ must have sufficient symmetry to allow you to pull the magnitude of B outside the integral. Whether the current distribution has symmetry is incidental. true or false
The correct answer is True. Ampère's law is a fundamental law of electromagnetism that relates the magnetic field created by a current distribution to the current itself. It states that the line integral of the magnetic field B⃗ around a closed loop is proportional to the current enclosed by the loop.
However, to use Ampère's law, the path along which the line integral is taken must have sufficient symmetry to allow us to pull the magnitude of B outside the integral. This means that the current distribution's symmetry is incidental when using Ampère's law. As long as the path of integration has enough symmetry, we can use the law to find the magnetic field created by the current distribution. Therefore, the statement that the current distribution's symmetry is incidental when using Ampère's law is true.
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31. Which term refers to the time for a vibrating particle to complete one cycle?
a. phase
b. frequency
c. period
d. amplitude
Answer: C. Period
Explanation: The period of a wave is the time for a particle on a medium to make one complete vibrational cycle.
pls help :( urgent!
1. What creates the magnetic force in an electromagnetic?
a. electric current
b. battery
c. coiled wire
d. iron or steel core
2. Which statement about electromagnets is correct?
a. a north pole and a south pole attract each other
b. a north pole and a south pole repel each other
c. two south poles attract each other
d. two north poles attract each other
3. Which is the best description of how to build an electromagnet?
a. attach one end of a wire to a battery, and attach the other end of the wire to an iron or steel core
b. attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery
c. wrap a wire around an iron or steel core at least ten times
d. connect one end of a battery to an iron or steel core with a wire, then connect the other end of the battery to the core with another wire
4. What causes a maglev train to hover above the track?
a. repellant magnetic force
b. attractive magnetic force
c. electric current
d. massive batteries
On electromagnetic force:
a. electric currentb. a north pole and a south pole repel each otherb. attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the batterya. repellant magnetic forceWhat is electromagnetism?The interaction of electrically charged particles with the corresponding electric and magnetic fields is the subject of the area of physics known as electromagnetism. It examines the connections between and interactions between electricity and magnetism.
Electric fields, magnetic fields, electromagnetic waves, and the behavior of charged particles in electric and magnetic fields are only a few examples of the many phenomena that fall under the umbrella of electromagnetism.
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To convert radians per second into rpm, divide by 120*pi
T/F
The statement "To convert radians per second into rpm, divide by 120*pi" is false.
To convert radians per second (rad/s) into revolutions per minute (RPM), we need to divide by 2π/60 or 0.1047. Therefore, the correct statement is: to convert rad/s into RPM, divide by 0.1047.
This conversion factor can be derived from the fact that there are 2π radians in one revolution, and 60 seconds in one minute. Dividing 2π by 60 gives us 0.1047 radians per second per revolution per minute, which is the conversion factor we need to use.
This conversion is often used in various applications related to rotating machinery, such as motors, engines, turbines, and fans, where the rotational speed is specified in either rad/s or RPM.
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A sample of lead is heated up to a temperature of 100°C and then placed in a sample of water with an initial temperature of 5°C. If the mixture is thermally isolated from its surroundings, then it:
exchanges no thermal energy with the environment outside the system as it comes to a final temperature.
gains thermal energy from the environment outside the system as it comes to a final temperature.
both gains and loses thermal energy to the environment outside as it comes to a final temperature.
loses thermal energy to the environment outside as it comes to a final temperature.
None of these choices are correct.
If the mixture is thermally isolated from its surroundings, then it, loses thermal energy to the environment outside as it comes to a final temperature. The correct answer is d.
When the sample of lead is placed in the water, heat will flow from the lead to the water until they reach a common final temperature. Since the final temperature will be less than the initial temperature of the lead, heat must have flowed out of the lead into the surroundings, causing the lead to lose thermal energy to the environment outside the system.
Since the mixture is thermally isolated from its surroundings, no thermal energy is exchanged between the system (lead and water) and the environment during the process. However, heat can still flow within the system itself until thermal equilibrium is reached. Option d is correct.
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A disk rotating at 5 rad/s experiences a constant torque for 4 seconds that results in an angular acceleration of 2 rad/s2. The angular displacement of the disk during those 4 seconds is most nearly
The angular displacement of the disk during those 4 seconds is most nearly 36 radians.
How to find the angular displacementA disk rotating at an initial angular velocity of 5 rad/s experiences a constant torque for 4 seconds, resulting in an angular acceleration of 2 rad/s².
To find the angular displacement during these 4 seconds, we can use the following equation:
θ = ω₀t + (1/2)αt²
where θ is the angular displacement, ω₀ is the initial angular velocity (5 rad/s), t is the time (4 seconds), and α is the angular acceleration (2 rad/s²).
Plugging in the values, we get:
θ = (5 rad/s)(4 s) + (1/2)(2 rad/s²)(4 s)²
θ = 20 rad + (1 rad/s²)(16 s²)
θ = 20 rad + 16 rad
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When would the Schartzchild radius be the most useful? When working with...
- Binding energy
- Gravitational potential energy
- Circular orbits
- Black holes
- None of these
The Schwarzschild radius would be the most useful when working with black holes. Option d is correct.
The Schwarzschild radius is a measure of the size of the event horizon of a non-rotating black hole, beyond which the gravitational pull is so strong that not even light can escape. It is directly proportional to the mass of the black hole and inversely proportional to the speed of light. The concept of the Schwarzschild radius is important in the study of black holes because it provides a way to estimate the size of the event horizon for a given mass, and it helps to explain some of the properties of black holes, such as their gravitational effects on nearby matter and the bending of light around them.
Therefore, the Schwarzschild radius is particularly useful in the study of black holes and their properties, such as their formation, growth, and behavior in the universe. It is not directly related to binding energy, gravitational potential energy, or circular orbits, although these concepts may be relevant to the study of black holes in specific contexts. Option d is correct.
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Some galaxy's disk has high metallicity stars and young O and B stars, while its nuclear bulge has low metallicity stars and mainly red dwarfs and red giants. From this information we can conclude that
From this information, we can conclude that the galaxy's disk has undergone recent star formation, resulting in the formation of young O and B stars.
These stars have high metallicity, which means they have a higher abundance of elements heavier than hydrogen and helium. On the other hand, the nuclear bulge of the galaxy has low metallicity stars, indicating that it has not undergone significant star formation in recent times. The predominance of red dwarfs and red giants in the bulge suggests that the stars there are older and have exhausted their nuclear fuel, resulting in their expansion and cooling. This difference in metallicity between the disk and bulge may be due to the differing histories of star formation and chemical enrichment in these two regions.
Overall, the metallicity of stars provides important clues about the evolution of galaxies and the processes that drive star formation.
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Saturn's moon Mimas takes exactly twice as long to orbit Saturn as the moon Tethys. This is an example of what we call ________.
Saturn's moon Mimas taking exactly twice as long to orbit Saturn as the moon Tethys is an example of a orbital resonance.
An orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other due to their orbital periods being related by a ratio of two small integers. In this case, Mimas orbits twice for every one orbit of Tethys, resulting in an orbital resonance.
The moons' orbits are all in resonance with each other, creating a beautiful and intricate dance around Jupiter. Orbital resonances can also affect the behavior of comets and asteroids in our solar system, and they play a role in the search for exoplanets in other star systems.
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Do like charges repel or attract each other? Do unlike charges repel or attract each other? Explain based on your observations
Like charges repel, unlike charges attract. This behavior is observed in accordance with Coulomb's Law in electrostatic interactions.
According to Coulomb's Law, like charges (both positive or both negative) repel each other, while unlike charges (one positive and one negative) attract each other.
This phenomenon is due to the electrostatic force acting between charged particles.
The force is proportional to the product of the charges and inversely proportional to the square of the distance between them.
For example, when you rub a balloon against your hair, it creates an imbalance of charges, causing the hair to be attracted to the charged balloon.
This demonstrates the attraction between unlike charges in everyday experiences.
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A flute behaves like a tube open at both ends. If its length is 65.3 cm, and the speed of sound is 340 m/s, what is its fundamental frequency in Hz?
A flute behaves like a tube open at both ends. If its length is 65.3 cm, and the speed of sound is 340 m/s, Its fundamental frequency in is 117.5 Hz.
The fundamental frequency of the flute can be determined using the equation f = (n/2L) x v, where f is the frequency, n is the harmonic number, L is the length of the tube, and v is the speed of sound. In this case, the length of the flute is given as 65.3 cm or 0.653 m, and the speed of sound in air is 340 m/s.
To find the fundamental frequency, we set n = 1, and plug in the given values into the equation:
f = (1/2 x 0.653) x 340
f = 117.5 Hz
Therefore, the fundamental frequency of the flute is 117.5 Hz.
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In some wire-in-glass fuses, the wire is not the same diameter all the way across the fuse. Many such fuses have one part of the wire that is considerably more narrow than the remainder of the wire. What is the purpose of this narrowing of the fuse wire?
In wire-in-glass fuses, the wire is the component that melts and breaks the circuit in case of overload or short circuit.
The narrowing of the fuse wire in some fuses serves to create a "weakest link" in the wire, which means that this narrow section will melt and break the circuit before the wider sections. This allows for a more precise and predictable melting point, ensuring that the fuse will trip at the desired amperage and prevent damage to the circuit or equipment. Additionally, the narrowing of the fuse wire can also improve the overall efficiency of the fuse, as it reduces the amount of energy required to melt the wire and break the circuit. Therefore, the design of the fuse wire is crucial in ensuring that the fuse operates reliably and safely. By creating a precise melting point and reducing energy consumption, the fuse can effectively protect the circuit and equipment from potential damage due to overloading or short circuiting.
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In words, what is the mathematical relationship between potential difference and current for a resistor? explain
The mathematical relationship between potential difference (voltage) and current for a resistor is that they are directly proportional to each other.
According to Ohm's Law, the relationship between potential difference (V), current (I), and resistance (R) for a resistor can be expressed as V = IR. This equation shows that the potential difference across a resistor is directly proportional to the current flowing through it. In other words, as the potential difference increases, the current through the resistor also increases, and vice versa, as long as the resistance remains constant.
This relationship holds true for Ohmic conductors, which obey Ohm's Law. For a given resistor, the current flowing through it will increase if the potential difference across it increases, and the current will decrease if the potential difference decreases, as long as the resistance remains constant.
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When light moves from a denser medium to a less dense medium, what happens to the angle of refraction?
When light moves from a denser medium to a less dense medium, the angle of refraction increases.
This is due to the change in the speed of light as it enters the less dense medium.
The speed of light is slower in denser mediums, so when it enters a less dense medium, it speeds up, causing the angle of refraction to increase.
This phenomenon is described by Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the speeds of light in the two mediums.
The change in the angle of refraction is also influenced by the difference in the refractive indices of the two mediums.
In general, the greater the difference in the refractive indices, the larger the change in the angle of refraction.
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The magnitude of the vertical component of the ground reaction force during running on a level surface is ______ times the runner's body weight.
The magnitude of the vertical component of the ground reaction force during running on a level surface is approximately 2-3 times the runner's body weight.
When a runner's foot strikes the ground during running, a ground reaction force is generated in response to the force of the foot hitting the ground. This force is composed of both a vertical and horizontal component. The vertical component is what we're interested in for this question. During running on a level surface, the vertical component of the ground reaction force can be estimated to be 2-3 times the runner's body weight. This means that if a runner weighs 150 pounds, the force generated on their body from the ground during running could be between 300-450 pounds.
In conclusion, the magnitude of the vertical component of the ground reaction force during running on a level surface is significantly greater than the runner's body weight, ranging from 2-3 times the weight. This highlights the importance of proper form and footwear to absorb and distribute this force, as well as gradual increases in training volume and intensity to avoid injury.
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Which of the following is not an example of momentum?
a. A baseball is swooping through the air. c. A bullet discharged from a firearm.
b. A large truck is moving. d. A ball left on the floor.
A ball left on the floor is not an example of momentum. Option d is correct.
Momentum is the product of an object's mass and velocity, and it is a vector quantity, which means that it has both magnitude and direction. A baseball swooping through the air, a bullet discharged from a firearm, and a large truck moving all have momentum because they have mass and velocity, and they are all moving in a particular direction.
On the other hand, a ball left on the floor has no momentum because it is not moving, and its velocity is zero. The ball may have mass, but since its velocity is zero, its momentum is also zero. Option d is correct choice.
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--The complete question is, Which of the following is not an example of momentum?
a. A baseball is swooping through the air.
b. A large truck is moving.
c. A bullet discharged from a firearm.
d. A ball left on the floor.--
T/F If A + B =0, then the vectors A and B have equal magnitudes and are directed in the same direction.
The statement, "If A + B =0, then the vectors A and B have equal magnitudes and are directed in the same direction." is False.
What are vectors?A vector is a quantity that describes not only the magnitude of an object but also its movement or position with respect to another point or object. It is sometimes referred to as a Euclidean vector, a geometric vector, or a spatial vector.
If A + B = 0, it means that the vectors A and B have equal magnitudes and are directed in opposite directions, such that they cancel each other out.
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Now assume that a strong, uniform magnetic field of size 0.55 TT pointing straight down is applied. What is the size of the magnetic force on the wire due to this applied magnetic field
To determine the size of the magnetic force on the wire, we need to use the formula F = BIL, where F is the magnetic force, B is the magnetic field strength, I is the current in the wire, and L is the length of the wire.
Unfortunately, the current (I) and the length (L) of the wire are not provided in your question.
Please provide these values in order to calculate the magnetic force.
The magnetic force on the wire can be calculated using the formula F = BIL, but the values for current and length of the wire are required to determine the size of the force.
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The standard tuning for musical instruments is the note A at 440 Hz. If the speed of sound in a concert hall is 344 m/s, what is the wavelength for the note A?
a. 0.72 m
b. 0.78 m
c. 0.82 m
d. 0.68 m
The wavelength for note A in this concert hall is (b) 0.78 m.
What is wavelength?The speed of sound (v) in a medium is related to its frequency (f) and wavelength (λ) by the formula:
v = fλ
We can rearrange this formula to solve for the wavelength:
λ = v / f
In this case, the frequency of note A is 440 Hz, and the speed of sound in the concert hall is 344 m/s. Substituting these values into the formula above, we get:
λ = 344 m/s / 440 Hz
λ = 0.78 m
Therefore, the wavelength for note A in this concert hall is (b) 0.78 m.
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An ice skater doing a spin pulls in her arms, decreasing her moment of inertia by factor of two. How does her angular = speed change?
It increases by a factor of two.
It is reduced by a factor of four:
It increases by a factor of four:
It does not change:
It is reduced by a factor of two
When the ice skater pulls in her arms, she decreases her moment of inertia by a factor of two. Moment of inertia is the measure of an object's resistance to rotational motion, and it is directly proportional to the object's mass and the distribution of that mass around the axis of rotation. So, by pulling in her arms, the ice skater is reducing the mass that is farther away from the axis of rotation (her body), thus decreasing the moment of inertia.
Now, according to the law of conservation of angular momentum, the product of an object's moment of inertia and angular speed must remain constant as long as no external forces act on the object. This means that when the ice skater decreases her moment of inertia by a factor of two, her angular speed must increase by a factor of two in order to maintain the same angular momentum.
Therefore, the correct answer is that her angular speed increases by a factor of two. It is important to note that this increase in angular speed is not due to an external force acting on the skater, but rather a result of the conservation of angular momentum.
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When an axon is stimulated a voltage spike is created. What happens to the voltage spike after it is created?
When an axon is stimulated, a voltage spike which is an electrical signal that travels along the length of the axon and eventually reaches the axon terminal, where it triggers the release of neurotransmitters into the synaptic cleft.
After the action potential is created, it begins to propagate down the length of the axon. This is achieved through the process of depolarization, where the membrane potential of the axon rapidly becomes positive due to the influx of positively charged ions such as sodium (Na+) and calcium (Ca2+) into the axon.
Once the action potential reaches the axon terminal, it triggers the opening of voltage-gated calcium channels. Calcium ions then enter the axon terminal, causing the release of neurotransmitters into the synaptic cleft.
These neurotransmitters bind to receptors on the postsynaptic membrane of the next neuron, triggering the creation of a new action potential in that neuron and continuing the process of signal transmission in the nervous system.
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Two objects with equal masses of 1 kg each are separated by a distance of 1 m. Let the gravitational constant to be G. The gravitational force between the objects is: O Slightly less than G O Half as much of G O Twice as much of G O Slightly greater than G O Equal to G
The gravitational force between the two objects is equal to G.
How much is the gravitational force?The gravitational force between two objects is given by the formula F = G*(m1*m2)/(r²), where F is the gravitational force, m1 and m2 are the masses of the two objects, r is the distance between their centers, and G is the gravitational constant. In this case, the masses of the two objects are equal (1 kg each), and the distance between them is 1 meter. Therefore, the gravitational force between them can be calculated as:
F = G*(m1*m2)/(r²) = G(1 kg * 1 kg)/(1 m²) = G N
So, the gravitational force between the two objects is equal to G, which is a fundamental constant of nature with a value of approximately 6.67 x 10⁻¹¹ N*(m/kg)².
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The work done to move a spring away from its equilibrium position is equal to
Select one:
a. the ratio of force to displacement.
b. the potential energy of the spring.
c. the ratio of force to mass.
d. the kinetic energy of the spring.
The work done to move a spring away from its equilibrium position is equal to b, the potential energy of the spring.
When you move a spring away from its equilibrium position, you are working on it. This work gets stored as potential energy in the spring. The potential energy of the spring can be calculated using the formula:
In physics, potential energy is the energy that an object holds due to its position relative to another object, the pressure within itself, electricity, or something else. The term "potential energy" was introduced in the 19th century by Scottish engineer and physicist William Rankin.
A vector can be easily expressed as the gradient of a function called the scalar potential.
Potential Energy = (1/2) kx2
where k is the spring constant and x is the displacement from the equilibrium position.
Potential energy relates to the force acting on an object and all the work that the forces of the object do in space only at the beginning and end of the object. Forces whose work is completely independent of the path are called "conservative forces." An object has a magnetic field if the force acting on it varies with space; such a field is defined by a vector at every point in space, also called a vector field.
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Based on many surveys of the average density of matter in the universe (regular matter and dark matter), astronomers now conclude that the average density of the universe is
Based on many surveys of the average density of matter in the universe, astronomers now conclude that the average density of the universe is finite.
Astronomers have conducted numerous surveys and observations to determine the average density of matter in the universe. These studies take into account both regular matter (such as stars, galaxies, and interstellar gas) and dark matter, which is an invisible form of matter that does not interact with light. Through these surveys, astronomers have reached the conclusion that the average density of the universe is finite, meaning that there is a limited amount of matter spread across the vast expanse of the cosmos.
This finding has significant implications for our understanding of the composition and structure of the universe and has helped shape our current models of cosmology.
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Collisions Lab Activity
When two cars collide, they would both rebound with the same rate of speed as before. Thus, their momentum and kinetic energy of the system would be preserved.
How to explain the informationThe solid red automobile would contribute some of its energy and velocity to the smaller blue car causing it to move at a certain velocity. The first vehicle consequently would recoil with a impetus underneath what it employed when the impact originally occurred. Nevertheless, because the crash was elastic, the entire amount of kinetic energy of the arrangement would remain intact.
Conversely, the teensy red motorcar would fly back with a quicker acceleration than it did prior to the clash, while the stout blue auto would travel along the same path of the former with a fixed measure of force. Once more, since the smashup was supple, the sum amount of vigor of the combination would be safe.
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Natural convection is a situation whose analysis depends on not taking the density as constant everywhere
T/F
The statement "Natural convection is a situation whose analysis depends on not taking the density as constant everywhere" is true. In natural convection, which is the transfer of heat due to fluid motion caused by buoyancy forces, the analysis depends on not taking the density as constant everywhere.
This is because natural convection involves the motion of a fluid due to variations in density caused by temperature gradients. As the fluid near a heated surface is heated, it becomes less dense and rises, while cooler, denser fluid descends to take its place.
This movement sets up convective currents that transfer heat from the surface to the bulk fluid. Therefore, the analysis of natural convection requires consideration of the density variation with temperature and the resulting buoyancy forces.
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4.23 Tennis balls experience a large drag force. A tennis ball is hit so that is goes straight up and then comes back down. The direction of the drag force is
A always up
b up then down
c always down
d down then up
The required direction of the drag force on the tennis ball is (B) up then down. Option B is correct.
The direction of the drag force on a tennis ball depends on its motion relative to the surrounding air.
When the tennis ball is hit so that it goes straight up, it is moving against the direction of gravity, which is pulling it down. As the ball rises, the drag force acts in the opposite direction to its motion, which is up, slowing the ball down and eventually bringing it to a stop before it begins to fall back down.
When the ball starts falling back down, the drag force acts in the same direction as its motion, which is now down, slowing the ball down and reducing its velocity as it approaches the ground.
Therefore, the direction of the drag force on the tennis ball is (B) up then down.
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A circular loop of wire of radius 10 cm carries a current of 6.0 A. What is the magnitude of the magnetic field at the center of the loop?
A) 1.2 Ã 10-5 T
B) 3.8 Ã 10-5 T
C) 3.8 Ã 10-7 T
D) 1.2 Ã 10-7 T
E) 3.8 Ã 10-8 T
The magnitude of the magnetic field at the center of a circular loop of wire carrying current can be found using the equation B = μ₀I/2r, where B is the magnetic field, μ₀ is the permeability of free space (4π x 10^-7 Tm/A), I is the current, and r is the radius of the loop. Substituting the given values, we get B = (4π x 10^-7 Tm/A) x (6.0 A)/(2 x 0.1 m) = 1.2 x 10^-5 T.Therefore, the correct option is A) 1.2 x 10^-5 T.
This result indicates that the magnetic field at the center of the loop is quite small, but it is still measurable using appropriate instruments. It also highlights the importance of the radius of the loop in determining the magnitude of the magnetic field. Doubling the radius would halve the magnetic field strength, and vice versa. This equation is widely used in the study of electromagnetism, and it helps to understand the behavior of magnetic fields around current-carrying wires and other devices. The concept of magnetic fields is crucial to many applications, including electric motors, generators, MRI machines, and more. By understanding the principles behind magnetic fields, we can create and manipulate them for various purposes, including energy generation, medical imaging, and data storage.
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