As these kids grow into teenagers, other people's avoidance of them is likely to get worse. Some kids cut off contact with others, which causes other people to reject them.
How old is adolescence?Overview. Ages 10 to 19 are considered adolescent years, the transitional period between childhood and maturity. It is a distinct period in human development or a critical time for establishing the basis of health. Teenagers go through a rapid period of physical, cognitive, and psychosocial development.
Who falls into this category?Beginning with the commencement of physically normal puberty, adolescence lasts until the acceptance of an adult identity and behavior. According to the Global Health Firm's definition of adolescence, this developmental stage falls roughly between the ages between 10 and 19 years.
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light inside the thin glass tube of a laparoscopic surgical device strikes the edge of the glass tube and is entirely reflected back into the tube
Light striking the walls of the glass cylinder and reflecting in inside tube itself is a phenomenon known as total internal reflection.
What word best describes reflection, in your opinion?Reflection is often synonymous with the verbs cogitate, contemplate, reason, hypothesize, and think. All of these expressions mean "using one's intellect, judgment, or inference faculties," but the word "reflect" means carefully considering a recollection.
What does it mean to give reflection some thought?constant verb When you ruminate, you seriously consider something. Alternatives include thinking, analyzing, planning, and thinking. More phrases containing "reflect" Reflecting feelings is the act of observing a person's verbal and nonverbal signs for their emotions and feelings, then immediately communicating (or reflecting) those attitudes to the user or customer.
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if the intensity of a sound wave increases by 2%, what is the change in the sound level of the wave? db
If a sound wave's intensity increases by 2%, the wave's level changes to 103.0102DB.
What is the sound level?Decibels are the units used to measure sound (dB). A motorcycle engine operating is around 95 dB louder than regular conversation, which is roughly 60 dB louder than a whisper. Your hearing may begin to deteriorate if exposed to noise levels exceeding 70 dB for an extended length of time. Your ears may suffer instant damage from loud sounds above 120 dB.
How do you gauge sound intensity?The following equation can be used to determine sound intensity: I=Δp22ρvw. P stands for pressure change or amplitude -material density vw-sound propagation speed The size of your acoustic waves oscillation determines how loud your sound will be.
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If a toaster transfers 100 joules of energy every 10 seconds, what is the power rating of the toaster?.
The power rating of the toaster will be 10 Watt
Power = Energy/time
Power = 100 joules/10 seconds = 10 Watt
So, power rating of the toaster is 10 Watt
What is Power ?Power, in science, time rate of doing work or delivering energy, expressible as the amount of work done W, or energy transferred, divided by the time interval t or W/t.
The SI unit for power is the watt W, where 1 watt equals 1 joule/second (1 W = 1 J/s).
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the earth-moon distance is increasing laser reflectors left on the surface of the moon by the apollo astronauts show that the average distance from the earth to the moon is increasing at the rate of 3.8 cm per year.
The idea of radiation from black holes was the first example of prediction that depended in essential way on general relativity.
One gamma particle is converted into mesons.
The moon has no cluttered atmosphere and as being a vacuum based diode.
The overheating issue is the prevailing issue to instruments of analyzing the spectrum of planets.
The earth Moon distance measured wrt the cavendish experiment . The ray detector assumed 3.8 cm per year will be the progressive distance.
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determine the location of the center of mass of the earth-moon system. the masses are and the distance between centers is
The center of mass of the earth–moon system is located at a distance 4.6 × 106 m from the center of the earth.
Distance is a numerical or every so often qualitative size of how some distance aside items or factors are. In physics or regular usage, the distance may check with a physical duration or an estimation primarily based on other criteria.
The space between two factors in physical space is the period of an immediate line among them, that's the shortest feasible course.
It reduces the entire international or part of the arena to a small sheet of paper. At the same time as making a map, cartographers pay attention to properly constitute the distance between two locations.
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Using multiple models simultaneously: This FNT refers to a process involving three moles of a diatomic gas (which behaves as an ideal gas, but as is typical near room temperature, with vibrational modes frozen out). The PV curve at right describes this process.
Determine the energy transferred as work, the change in internal energy, and the energy transferred as heat in this process.
The energy transferred as work is 550 J and the change in internal energy is 997.68 J
The work done is same as to the area under curve as shown.
W = (1.6-1.4)x10-3](55.0x105)+ -(60-55.0)x105 (1.6-1.4)x10-3
work done= 550 J
The change in internal energy is,
ΔU = nc(T2 -TI,)
=n5/2R (T2-TI])
=(3 mole) (8.314 J/mol.K) (353-337)5/2 K
=997.68 J
Putting energy into an object to cause some displacement is what is meant by the definition of work. To be able to work done is to have energy. Always the same work is completed. Potential and kinetic energy are just two examples of the various types of energy. For an object to move, energy must be transferred to it. Force is one possible way to transfer energy. Work is the term used to describe the energy expended when a force is used to move an object.
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a block slides at constant speed down a ramp while acted on by three forces: the gravitational force, the normal force, and the kinetic friction force. respond to each statement, true or false.
False, since The definition of net work is the change in kinetic energy that results in final kinetic energy, which is our starting kinetic energy. The working energy theorem.
How do the normal force and the kinetic friction force interact?The amount of kinetic friction is inversely proportional to the amount of normal force and the degree of roughness between the sliding surfaces. The amount of static friction is inversely proportional to the amount of normal force and the degree of roughness between the sliding surfaces.
What connection exists between the forces of friction and gravity?The direction of the push used to move the body is the opposite of the direction of friction. Because of increased friction, it is more difficult to slide a body on a surface when gravity is strong.
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Discuss how to read out the spring constant k from the graph of data obtained in the two experiments below. (You will compare both methods in the lab.) i. Student A varies force F exerted on a spring and measures its extension delta x, and plots the best-fit line of F vs delta x. ii. Student B varies mass m attached on a spring and measures the angular frequency omega of its simple harmonic oscillation, and plots the best-fit line of log omega vs log m
Spring constant can be obtained by using Hooke's formula and simple harmonic motion .
What is spring constant?Spring constant is a measure of the stiffness of spring. When spring is stretched or compressed, so that length changes by an amount x from equilibrium length, then it exerts a force F = -kx in direction towards equilibrium position.
1)When spring is stretched then the increased length is called its extension. And, F = ke
Where, F is force in newton (N) and k is the 'spring constant' (N/m)
e is the extension (m)
Hooke's Law is expressed as equation F = - k(x), where k is spring constant and x is the displacement.
2) Mass m is attached to a spring with spring constant k, then it will oscillate with a period (T). It is given as: T = 2π√(m/k).
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Electromagnetic radiation with a wavelength of 589 nm appears as yellow light to the human eye. The energy of one photon of this light is 3.37x10-19J. Thus, a laser that emits 1.3x10-2 of energy in one pulse of light at its wavelength produces (BLANK) photons in each pulse.
A.) 2.6x10-17
B.) 6.5x1013
C). 2.3 x1019
D.) 3.9x1016
E.) 7.4x10-24
Electromagnetic radiation with a wavelength of 589 nm appears as yellow light to the human eye. The energy of one photon of this light is 3.37x10-19J. Thus, a laser that emits 1.3x10-2 of energy in one pulse of light at its wavelength produces (BLANK) photons in each pulse is 3.9 x 10¹⁶
Electromagnetic waves( which include visible light,radio, microwaves etc) carry energy. Each photons( a quantum unit of EM radiation) possess some energy depending on the frequency of the radiation.
The energy of each photon of yellow light is given as-
E=hc/λ
n= energy of laser/energy of one photon
n= E/ El
where E= energy of one photon of the light
El=energy of a laser
λ= wavelength of light
n= no.of photons in each pulse
n=1.3*10-²/3.37*10-¹⁹
n= 3.9*10¹⁶
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Convert the heat of neutralization of acetic acid from -51 kj/mmol to calories per millimole and ROUND TO ONE DECIMAL PLACE (1 cal = 4.184 J)
The heat of neutralization of acetic acid from -51 kj/mmol to calories per millimole is 12189.3 cal/mmol.
What is the heat of neutralization of a substance?The heat of neutralization of a substance is the amount of heat given off when one mole of water is produced from the reaction of an acid and a base.
The heat of neutralization of different acids and bases varies.
The heat of neutralization of acetic acid is given as -51 kj/mmol.
This means that 51 kJ of heat is given when 1 mmole of acetic acid reacts with a base to form water.
To convert the heat of neutralization of acetic acid from -51 kj/mmol to calories per millimole, we use the conversion factor between energy in Joules and energy in calories.
The conversion factor is given below:
1 cal = 4.184 Joules
51 kJ = 51000 Joules
51000 Joules = 51000 * 1 cal / 4.184 Joules
51000 Joules = 12189.3 calories
Hence, the heat of neutralization in cal/mmol is 12189.3 cal/mmol
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A stretched wire adjusted to a length of 48cm produces the same note as a tuning fork whose frequency is 256Hz. If the wire is adjusted to 32cm, what frequency of the tuning fork would be in tune with the wire?
The frequency of the tuning fork would be in tune with the wire is 384Hz.
What does frequency mean?The rate at which current changes direction each second is known as frequency. One hertz (Hz), which is a unit of measurement used internationally, equals one cycle per second.
How frequently a periodic wave form or signal repeats itself at a specific amplitude is expressed as frequency. It can be measured in hertz, kilohertz, megahertz, etc.
Frequency of fundamental v = 1/2L [tex]\sqrt{T/M}[/tex]
1st case 256 = 1/2×48 [tex]\sqrt{T/M}[/tex] (1)
2nd case v = 1/2×32 [tex]\sqrt{T/M}[/tex] (2)
dividing (2) by (1) we get,
v/256 = 2×48/2×32
v/256 = 96/64
v/256 = 1.5
v = 1.5×256
v = 384Hz.
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if a car with mass 1300 kg were dropped vertically from a great height, how long would it take to go from zero to 60 mph (0 to 96.6 km/h), and what would the magnitude of the change in gravitational potential energy be during this time? (neglect air resistance)
It will take 2.737 s for the car to go from zero to 60 mph and the magnitude of the change in gravitational potential energy during this time is 467,685.4 J
Since we are given the mass which is 1300 kg and the speed of the car which is 60 mph( 26.8224 m/s) .According to the principle of conservation of energy, mg = ½mv² , Therefore
=> h = v²/2g, substituting the values we get
=>h = 26.8224²/(2 × 9.8) = 36.71 m
Now, from Newton's first equation of motion,
t = (v - u)/g = (26.8224 - 0)/9.8 = 2.737 s
The formula we referring to calculate the magnitude of change in gravitational potential energy is:
ΔGPE = mgh, substituting the know values we get
ΔGPE = 1300 × 9.8 × 36.71 = 467,685.4 J
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a stick with a mass of 0.161 kg and a length of 1.00 m is pivoted about one end so it can rotate without friction about a horizontal axis. the meter stick is held in a horizontal position and released.
A bar rotating at the same speed is moving faster than a bar dropping from the same height. w=7.352 rad/8 is the linear velocity.
v=wxr, w=7.352rad/8
How would one define friction?The resistance to motion created when two objects rub against one another is called friction. Friction occurs whenever two items come into contact with one another. Friction force and inversely proportional from the motion and works against it. The two surfaces' respective materials have an impact on how much friction exists.
What type of force is friction?The force produced by two surfaces coming into contact and sliding against one another is referred to as frictional force. The following variables impact the frictional force: Surface roughness and the force acting pressing them together have the biggest an impact on these forces.
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choose the correct description of how deeply each portion of the electromagnetic spectrum penetrates earth's atmosphere and if space telescopes are important to our understanding of the universe.
Only microwave radiation, visible light, ultraviolet light with extremely long wavelengths, and a small portion of the infrared spectrum may be seen from the ground.
Why do you use the word electromagnetic?A division of physics known as electromagnetism studies the magnetic wave that exists between particles with electrical charge. One of the fundamental forces, the electromagnetic force, produces electric radiation such as magnetic, electric, and optical fields.
Is the human body electromagnetic?Humans do emit radiation. Most of the electromagnetic radiation that humans emit has a frequency lower than that of visible light and is called infrared radiation. Not just humans can experience this effect. Thermal radiation is produced by every non-zero temperature item.
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suppose that the internal energy of a system has been increased, resulting in an increase in the temperature of the system. which of the following is the cause of this change?
No, according to the first law, whether a certain amount of energy is added by doing work on the system or by adding heat, the internal energy will change in the same way.
A thermodynamic system's total internal energy is defined as the energy it possesses. It consists of both internal kinetic energy and potential energy contributions, and it is the energy required to develop or prepare the system in its current internal condition. The system's energy gains and losses resulting from modifications to its internal state are tracked by this mechanism. It excludes all external energies from surrounding force fields as well as the kinetic energy of the system's overall motion. The first law of thermodynamics, which is based on the idea that an isolated system's internal energy is constant, is stated as the law of conservation of energy. An vast quality is the internal energy.
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which of the following describes beam steering accomplished by sequencing? group of answer choices all or most transducer elements are excited; small time delays between excitations of elements control the beam direction. a motor inside the transducer housing oscillates the array. small groups of elements are excited separately in succession; the active group determines beam direction. a single, separate channel and transducer element is used for each beam line.
The following describes beam steering accomplished by sequencing :
all or most transducer elements are excited; small time delays between excitations of elements control the beam direction.a single, separate channel and transducer element is used for each beam line.Beam steering is the process of changing the angle of the ultrasound beam in relation to the transducer without moving the probe. Beam steering enables a point on an image to be insonated from multiple angles using a single probe and a single probe position.
Beam steering is a technique for changing the direction of a radiation pattern's main lobe. Beam steering in radio and radar systems can be accomplished by switching antenna elements or changing the relative phases of the RF signals driving the elements.
Beam steering is accomplished by delaying the ultrasound beam's transmit and receive timing.
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using energy ideas, we know that work is preformed on the jum,per to give him or her kinetic energy. but the norrmal force can
3. Both of the above. The normal force can provide the same amount of work as the gravitational force, since it is the force that is perpendicular to the surface and prevents the jumper from going through it. The normal force can also oppose the motion of the jumper, if the jumper is trying to go too fast and is pushing against the surface.
The Importance of the Normal ForceIn many situations in life, we rely on the normal force to keep us safe. For example, when we jump off a cliff into a pool of water, the normal force is what prevents us from going through the surface of the water and hitting the bottom of the pool. Without the normal force, we would simply fall through the water and possibly hurt ourselves.
The normal force is also important in other situations. For example, when we are driving in a car and hit a bump in the road, the normal force is what keeps us from being thrown out of our seats. Without the normal force, we would simply be thrown around inside the car and possibly injured.
So, as you can see, the normal force is important in many different situations. It is a force that we often take for granted, but which plays a vital role in keeping us safe.
Missing Options:
1. provide the same amount of work as the gravitational force2. oppose the motion of the jumper3. both of the above4. neither of the aboveLearn more about kinetic energy:
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a 0.440-kg object attached to a spring with a force constant of 8.00 n/m vibrates in simple harmonic motion with an amplitude of 12.2 cm. (assume the position of the object is at the origin at t
The value of the objects maximum speed is 52.02 cm/s.
What is a maximum velocity (v) ?The velocity is greatest at y=0, when displacement and acceleration are both equal to zero. This means that the system is in equilibrium. Hence, at a particular point in simple harmonic motion, the maximum value of the object's speed can be calculated by using the equation,
v = A ω
Here,
v = Maximum velocity
A = Amplitude
ω = Angular frequency
What is angular frequency?The rate at which the waveform phase changes or the angular displacement of any wave element per unit of time is referred to as the angular frequency. Symbol of angular frequency is ω.
Given,
Mass of the object (m) = 0.440 kg
Force constant (K) = 8.00 n/m
Amplitude (A) = 12.2 cm
Now,
v = A ω
We know ω = √k/m
Now substituting we get,
v = A√k/m
Putting the values in the above equation, we get
v = 12.2 × √(8/0.44)
= 52.02 cm/s
Hence, the maximum speed is 52.02 cm/s.
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NOTE: The given question is incomplete on the portal. Here is the complete question.
QUESTION: A 0.440-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 12.2 cm. (Assume the position of the object is at the origin at t = 0) Calculate the maximum value of its speed in cm/s.
Now compare the distance from the first dark fringe above the middle of the screen (where the intensity is nearly zero) to each of the two slits. How do the distances compare? 500 nm 11310 Light Generator The difference in the distances is equal to a quarter of the wavelength of the wave. The distances are the same The difference in the distances is equal to half the wavelength of the wave, The difference in the distances is equal to the wavelength of the wave.
the distance from the first dark fringe above the middle of the screen o each of the two slit is compared by option c difference in the distance is equal to the half the wavelength of the wave
To obtain the first dark fringe, the light from both slits is phase shifted by pi angle. As a result, the path difference between the two slits is the difference in the distance is equal to the half the wavelength of the wave The interferences that cause the dark fringe formation are destructive in nature. The interference fringes are denoted as destructive in the resultant amplitude, and their intensity is equal to zero.
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the physical quantity of force has group of answer choices both magnitude and direction neither magnitude nor direction direction only magnitude only
The physical quantity of force has both magnitude and direction.
Force is a vector quantity and hence has both magnitude and direction.
Force can set a body into motion or even stop a moving body. The push or pull activity on an object is called force. It is an external agent which has an ability to change the state of a body. The S.I units of force is Newton. It is given by the formula, F = m*a
where, F is external force
m is mass of an object
a is acceleration
Force can bring about various changes like accelerate the speed of a moving body, can stop a moving body, it can make a body move from rest and it can change the direction of a moving body.
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write a paragraph explaining how energy flows through an ecosystem using energy pyramid trophic level producer primary consumer decomposer sun secondary comsumer tertiary consumer
Energy is transferred among organisms in meals webs from manufacturers to purchasers. The strength is utilized by organisms to perform complicated tasks.
At the bottom of the pyramid are the manufacturers, who use photosynthesis or chemosynthesis to make their very own meals. Herbivores or number one purchasers, make up the second one degree. Secondary and tertiary purchasers, omnivores and carnivores, observe withinside the next sections of the pyramid.
There is a float of strength from one trophic degree to the alternative in a meals chain. Producers deliver strength from the solar into the community. Primary purchasers consume the manufacturers, which makes them herbivores in maximum communities. Secondary consumers consume the number one purchasers, which makes them carnivores.
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A model used for the yield Y of an agricultural crop as a function of the nitrogen level N in the soil (measured in appropriate units) is y = (kN)/(1+N^2) where k is a positive constant. What nitrogen level gives the best yield? N =?
The nitrogen level would give the best yield at N = 1
Given y = (kN)/(1+N^2)
first step is to take the derivative
the derivative is [tex]y' = \frac{k - kN^2}{( 1 + N^2)^2}[/tex]
ON equating this value of y' to 0
we get
y' = k - k[tex]N^2[/tex] = 0
k ( 1 - N^2) = 0
After dividing the above equation with k
and then subtracting we get ;
N = ± 1
However N = 1 is the only possible answer since the nitrogen level can't be negative
thus the nitrogen level gives the best yield at N = 1
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a cold canned drink is left in a warmer room where its temperature rises because of heat transfer. is this a reversible process? explain
a cold canned drink is left in a warmer room where its temperature rises because of heat transfer. Heat transfer for a internally reversible process.
Internal reversibility means that entropy is generated within the system.
Heat transfer from a process is considered reversible if it occurs due to a small temperature difference between the environment and the system.
Let's see an example
Heat transfer with a temperature difference of 0.0001 °C appears to be more reversible than heat transfer with a temperature difference of 100 °C.
as a result ,
Reversible processes can be approached by heating or cooling the system in infinitely small steps.
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1. a 5 kg block on a ramp of 20 degrees slides down to the bottom with a coefficient of friction of 0.25. what acceleration does the block have
With a 0.25 coefficient of friction, a 5 kg block on a 20 degree ramp slides to the bottom. Block acceleration is 1.04 m/s2.
Fnet = m*a = m*g*(sinΘ-µ*cosΘ). a
= Fnet/m = g*(sinΘ-µ*cosΘ)
g*(sinΘ-µ*cosΘ) = 9.8*(sin20–0.25*cos20) = 1.04m/s²
An object can push or pull on other objects by using force. An object's rate of change in speed is referred to as acceleration. An object can exert force if it has mass and is traveling through space quickly. Newton's second law of motion explains this concept. According to Newton's second law, when a massive body is subjected to a constant force, it will accelerate—that is, change its velocity—constantly. In the most basic scenario, an object at rest accelerates in the force's direction when a force is applied to it. By means of gravity, a planet or other body pulls objects toward its center. All of the planets are kept in place by gravity.
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The thermocline is a rapid change in __________ with water depth in the ocean.
a) temperature
b) salinity
c) oxygen
d) pressure
e) density
a) temperature
A choice The thermocline is a rapid drop in temperature with oceanic depth.
A thermocline is a thin, distinct layer within a large body of fluid where temperature variations with depth are more extreme than those within layers above or below. The thermocline separates the ocean's upper mixed layer from the calm deep water below. The layer that lies between the surface's warmer mixed water and its cooler depths is known as a thermocline. In a body of water, the thermocline can generally be identified by the sudden temperature change that occurs. The thermocline in the ocean is a layer that separates the mixed upper layer from the deep ocean waters. the epipelagic zone, another name for the ocean's topmost layer
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a spaceship is traveleing around the earth at 8000m/s, what will the velicity be witht he plant of 5 times the radied and 1/8 the the mass
At this speed, the velocity of satellite takes 1.5 hours to orbit the Earth's 24,000-mile perimeter. The astronaut does not point if he wants to land.
How is escape velocity determined?G is the gravitational constant, M is the mass of the attracting mass, and r is the distance from the center of that mass. This equation for the escape velocity, denoted as vesc, is written as vesc = Square root of 2GM/r.
What transpires when a spacecraft is launched at a speed lower than 8000 meters per second?The mass of the planet and the radius of the spacecraft's orbit path are the two factors that nature uses to calculate the speed of an orbiting spacecraft.
calculation:
velocity of satellite = 1.5 hrs
G = gravitational constant
distance = 24000 mile
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Speed in electrical conduction is probably the most important aspect of the nervous system. To propagate the action potential, neurons depend on in channels opening one at a time along the length of an axon. This will slow down the speed in which an action potential is conducted. Myelinating the axons aids in speeding up the propagation time. What two functions does myelination serve? View Available Hint(s) Insulate and remove cell debris Form blood-brain barrier and remove cell debris O Speed up the propagation of action potential and form CSF Insulate and speed up the propagation of action potential
Myelinating the axons aids in speeding up the propagation time when speed in electrical conduction is probably the most important aspect of the nervous system.
A nerve cell's (neuron's) axon, or nerve fiber, is responsible for carrying nerve impulses out of the cell body. One axon, which connects a neuron to other neurons, muscle cells, or glandular cells, is the norm for a neuron. Some axons, for instance, could extend all the way from the spinal cord to the tip of a toe. Myelin, which covers the majority of vertebrate axons, speeds up impulse transmission in some big axons to up to 90 meters (300 feet) per second.
The electrical potential of the nerve membrane decreases in response to an external stimulus, and this "point of lowered potential"—the impulse—then travels along the nerve as a "wave of relative negative."
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Describe where x-rays are found on the ems compared to the other six forms of radiation.
Incoming X-ray photons ionize atoms in a gas-filled space in a Geiger-Müller tube, also known as a Geiger counter.
Accelerating electric charges emit electromagnetic waves according to the classical electromagnetism theory. An electron beam with high energy collides with a solid target in the X-ray tube, the most popular terrestrial source of X-rays. The rapidly moving electrons in the beam repeatedly deflect and slow down as they come into contact with the electrons and nuclei of the target atoms.The different types of EM radiations include gamma rays, x-rays, ultraviolet, visible, infrared, microwave, and radiowave. Between 100 and 1000 m is the range of frequency for microwave radiation. As a result of having the second-lowest frequency range among all radiations, they also have the second-lowest energy, and their wavelength is greater than that of all other types of radiations other than radiowaves.To know more about Geiger counter-
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Two point charges are located on the x axis. The first is a charge +q at x=-a. The second is an unknown charge located at x=+3a. The net electric field these charges produce at the origin has a magnitude of 2keq /a 2. What are the two possible values of the unknown charge?.
The correct answer is -9Q
Electric field at origin is:
E = (2keQ/a²)
Electric field due to first charge at origin would be:
E₁ = (keQ)/a²
Electric field due to second charge would be:
E₂ = E - E₁
E₂ = (keQ)/a²
If the second charge is Q', then should be:
E₂ = (keQ)/(3a)² = (keQ)/9a²
compare the above two values to find the possible values of Q':
Q' = 9Q
The net electric field at origin is greater than the one due to first charge. It means the second charge adds on to the electric field at the origin. Thus, it should be a negative charge.
Therefore, Q' = -9Q one value is possible as the location of the second charge in this electric field is given to be on the positive x-axis.
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how much horizontal force must now be applied to the block to get it to begin sliding from its state of rest?
The horizontal force must overcome static friction's opposing force in order for the box to start moving.
What is meant by horizontal force?A horizontal force is one that moves parallel to the horizon. A box of bananas weighing 40.0N is perched on a flat surface. The cycle's pace tends to slow down due to an opposing force termed air resistance force, which acts in the opposite direction. Both the applied force and the air resistance force are considered horizontal forces when the direction is taken into account. While the vertical component of a force represents the portion of the force that acts in the vertical direction with respect to the body, the horizontal component of a force represents the portion of the force that acts in the horizontal direction with respect to the body.Therefore,
The horizontal force must overcome static friction's opposing force in order for the box to start moving.
F ≥ μsmg = (0.30)(12)(9.8) N = 35.28 N
F ≥ 35.28 N
The complete question is:
What horizontal force must be applied to the box to cause it to start sliding along the surface?
A 12-kg box rest on a horizontal surface. The coefficient of static friction between the box and the surface is 0.30, and the coefficient of kinetic friction is 0.20.
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