The velocity of Ball 2 after the collision is 3.4m/s.
What is law of conservation of momentum?When two bodies collide, according to the law of conservation of momentum. The total kinetic energy before and after collision will be the same.
Using the law of conservation of momentum;
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Given, m₁ = 10.00kg
u₁ = 1.7m/s
m₂ = 5.00kg
u₂ = 0m/s
v₁ = 3.4m/s
Substitute the given values
10(1.7) + 5(0) = 10(3.4) + 5v₂
17 + 0 = 34 + 5v₂
17-34 = 5v₂
-17 = 5v₂
v₂ = -3.4
v₂ = 3.4 m/s
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astronomers can now report that active star formation was going on at a time when the universe was only 20% as old as it is today. when astronomers make such a statement, how can they know what was happening inside galaxies way back then? a.they look at a graph that shows the way galaxy redshifts change with time b.they examine the spectra of galaxies (or the overall colors of galaxies) with the highest redshifts they can find c.they look at radio waves coming from nearby active galaxies d.they look at the elements in comets, which formed when our solar system was first forming e.they look at the open clusters in the milky way galaxy
Astronomers can now report that active star formation was going on at a time when the universe was only 20% as old as it is today. when astronomers make such a statement, they examine the spectra of galaxies (or the overall colors of galaxies) with the highest redshifts they can find.
SO option B is correct.
Who are Astronomers?An astronomer is described as a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth by observing astronomical objects such as stars, planets, moons, comets and galaxies – in either observational or theoretical astronomy.
Astronomers are known to use redshifts to measure how the universe is expanding, and thus to determine the distance to our universe's most distant and therefore oldest objects.
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nail tips exert tremendous pressures when they are hit by hammers because they exert a large force over a small area. what force must be exerted on a nail with a circular tip of 1.00 mm diameter to create a pressure of (this high pressure is possible because the hammer striking the nail is brought to rest in such a short distance.)
2.18X103 N force must be exerted on a nail with a circular tip of 1.00 mm diameter to create a pressure.
diameter, d = 0.95 mm = 0.95x10-3m
P = 3.1X10^9 Pa
r = d/2 = 0.95/2 x 10^-3 m
= 0.475 x 10^-3 m
Area = [tex]\pi[/tex] r2
= 3.14 x ( 0.475 x 10^-3 m)2
= = 3.14 x 0.225 x 10^-6
= 0.706 × 10-6 m2
Force = PXA
= 3.1 x 10^9 x 0.70 6 × 10^-6
F = 2.18X103 N
Pressure , within the physical sciences, the perpendicular force in step with unit per area , or the stress at a factor inside a restricted fluid.
A easy instance of pressure can be seen by retaining a knife to a bit of fruit. In case you keep the flat part of the knife towards the fruit, it might not reduce the area. The force is spread out of a massive vicinity (low strain).
The SI unit of pressure is pascal (represented as Pa) which is identical to one newton in line with rectangular metre (N/m2 or kg m-1s-2).
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PLS HELP I ONLY HAVE 2 MINUTES PLEASE ONLY ANSWER IF YOU KNOW THE RIGHT ANSWER
_____ are the main form of fuel that is burned today in automobiles, industrial plants, and homes.
Carbon Monoxides
Nitrogen Oxides
Sulfur Oxides
Hydrocarbons
Answer:
Hydrocarbons
Explanation:
quizlet
A bullet of mass 7.5 g that is moving at a speed of 483 m/s embeds itself into a tree, penetrating 19.4 cm into the wood.What is the magnitude of the average force, in N, exerted by the tree on the bullet? sig.gif?tid=4T78-AC-85-4A-844D-22357F =
The average force by which the bullet will hit the tree is F = 4.50945 × [tex]10^4[/tex] N .
Given : mass of the bullet = 7.5 gram
u or intial velocity = 483 m/s
v or final velocity = 0 m/s
h or height = 19.4 cm
v² = 2as + u²
0 = 38.8 a + 483 × 483
- 483 × 483/ 38.8 = a
thus acceleration = 6012.6 m/s²
F = ma
Thus on substituting the values we get
F = 7.5 × 6012.6
F = 45,094.5 N
or
F = 4.50945 × [tex]10^4[/tex] N
The magnitude of the average force is F = 4.50945 × [tex]10^4[/tex] N .
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a circular loop of wire with a radius of 13.0 cm and oriented in the horizontal xy-plane is located in a region of uniform magnetic field. a field of 1.7 t is directed along the positive z-direction, which is upward. for related problem-solving tips and strategies, you may want to view a video tutor solution of emf and current induced in a loop.
Emf and current induced in a loop is 39.17volts
How does current flow across a wire?A wire can also be made to conduct electricity by exposing it to a magnetic field. This process of producing electricity by employing a magnet is called electromagnetic induction. It operates because when the coil "cuts through" the magnetic field line, the magnetic field around it changes.
Calculation:
Radius r = 13cm = 0.13m
Area of the circular loop can be determined using the formula for area of a circle
A = π r²
A = π × 0.13²
A = 0.0530 m²
Magnetic field B = 1.7T in positive z direction
B = 1.7•k T.
If loop is remove from the field in the time interval
∆t = 2.3ms = 2.3×10^-3s
We want to find the average EMF and it is given as
ε = —∆Φ/∆t
The final flux is zero
Φf = 0
Where magnetic flux is given as
Φi = BA Cosθ
Where θ=0 since the area and the magnetic field point in the same direction.
Φi = BA Cos0
Φi = BA
Φi = 1.7 × 0.0530
Φi = 0.0901 Vs
Then, ε = —∆Φ/∆t
ε = —(Φf — Φi) / ∆t
ε = —(0-0.0901) / (2.3×10^-3)
ε = 0.0901 / (2.3×10^-3)
ε = 39.17V
The EMF is 39.17 Volts.
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What can I do to make this less expensive, with less cargo damage, and with a sturdy shell condition? Anything less than the amount shown in the image.
The external part of the shell is made of fiberglass. This is probably very expensive. The production team of the above product should experiment with Graphene.
Why should Graphene be considered for the above project?It should be highlighted that graphene is already being utilized in transportation, medical, electronics, energy, defense, and desalination; graphene research is having a significant influence across a wide variety of sectors.
To put things in perspective, one square meter of normal paper is 1000 times heavier than graphene, while a single sheet of graphene large enough to cover a football field weighs less than a gram. Strongest. With a tensile strength of 150,000,000 psi, graphene outperforms steel and Kevlar.
Graphene, a single sheet of carbon atoms, has been hailed as the strongest substance known to man, 200 times stronger than steel, lighter than paper, and with amazing mechanical and electrical capabilities.
Given that graphene is formed of carbon, and carbon is in plentiful supply, it will very certainly be less expensive than fiberglass.
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The vapor pressure of methanol at is. Calculate the vapor pressure in and. Round each of your answers to significant digits.
Methanol has a vapor pressure of 126 at 25 °C.
What is the definition of vapor pressure?Vapor pressure features include: It is significant to remember that when a liquid boils, the pressure of its vapor equals the atmospheric pressure. For instance, the vapor pressure of water when it boils at sea level is 1 atmosphere because the surrounding pressure is also 1 atmosphere.
How is vapor pressure measured and what does it mean?It is the force applied to the unit area of the system's wall. The boiling point method and the transpiration method are the two main experimental techniques used to assess the vapor pressure at high temperatures.
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Two students hold an open bed sheet loosely by its corners to form a “catching net.” The instructor asks a third student to throw an egg into the middle of the sheet as hard as possible. Why doesn’t the egg’s shell break?
The average force applied on the egg is small because of the large time interval in which the egg is in contact with the bed sheet. This is because force is inversely proportional to time.
What is the relation between force and time?
Force is a measure of the change of momentum over time. It can be written as Force = mass x acceleration (change in velocity/ time). The momentum of an object increases when an external force is acting upon the object, because that force is causing it to accelerate, and to have an increase in the velocity of the object.
The force acting upon an object is inversely proportional to time, with the increase in time, the applied force decreases. However, for constant acceleration, this quantity does not change. The average force on the egg is small because of the large time interval in which the egg is in contact with the bed sheet.
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(figure 1) shows two blocks sliding on a frictionless surface. eventually the smaller block overtakes the larger one, collides with it, and sticks. suppose that m
The final speed after the collision of the blocks is 5u/4. The final speed is given in terms of initial velocity.
Given:
Mass of the first block, m
Mass of the second block, 3 m
The initial velocity of the first block, 2u
The initial velocity of the second block, u
The momentum can be determined from the product of mass and velocity.
From the conservation of momentum:
initial momentum = final momentum
2mu + 3mu = (3 m+m) v
The final speed is:
5mu = 4mv
v = 5u/4
Hence, the final speed after the collision of the blocks is 5u/4. The final speed is given in terms of the initial speed.
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#Complete question is:
shows two blocks sliding on a frictionless surface. eventually, the smaller block overtakes the larger one, collides with it, and sticks. suppose that m
What is the speed of the two blocks after the collision?
An element with 19 protons and 19 electrons gains one electron and results in what species?.
Potassium atoms have one valence electron in the outer shell, 19 protons, and 19 electrons. According to the periodic chart, sodium, the alkali metal above potassium, is thought to be chemically similar to potassium.
Which of the following best describes an atom made up of 21 neutrons, 19 protons, and 19 electrons?Potassium's atomic structure. 19 protons and 21 neutrons make up the nucleus. 19 electrons surround the nucleus, with one extremely unstable electron in the outer shell (ring). The stability of an element's outer electrons governs both its chemical and physical properties.
Which element's atoms' nuclei contain 19 protons?Potassium's most prevalent isotope has a total of 20 neutrons. The stable potassium isotopes.
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Rainwater contains dissolved substances that allow it to conduct electricity. Why would you not be
electrocuted if you walked under an electric transmission line during a rainstorm?
As the raindrops do not provide a continuous path to flow the electrons because the air between the rain droplets acts as an insulator, therefore, the person walking under an electric transmission line would not be electrocuted.
What is a electrical conductor?In physics, a conductor can be described as a type of material that allows the flow of charge in one or more directions. Electric current is produced by the flow of negatively charged electrons or ions in some cases.
Raindroplets have dissolved impurities which make them somewhat conductive of electricity, but conductors should be continuous to create a conducting path at normal voltages.
The electric current can only flow when there is a continuous path of conductive material providing a conductor for electrons to travel through. The continuous flow of electrons needs to be an unbroken path to allow it to flow.
Since the air can be considered an insulating material and an air gap separates prevents a continuous path has been broken therefore electrons cannot flow.
Therefore, due to the absence of the closed circuit, you would not be electrocuted during a rainstorm if you walked under an electric transmission line.
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Two carts on an air track have the same mass and speed and are traveling toward each other. If they collide and stick together, find the total momentum and total kinetic energy of the HINT (a) the total momentum O The final momentum is zero. The final momentum is half the initial momentum. O The final momentum is twice the initial momentum. O There is not enough information to tell. (b) the total kinetic energy O The final kinetic energy is zero. OO The final kinetic energy is half the initial kinetic energy. The final kinetic energy is twice the initial kinetic energy. O There is not enough information to tell. (c) Describe a different colliding system with this same final momentum and kinetic energy.
if they collide and remain united then the. Total momentum of the system is zero.
Total momentum by using the Principle of Momentum Conservation.
mVa-mVa=2Vb
final speed and total momentum of system =zero
p=0
Due to the inellastic impact and the same masses and speeds, the system's total kinetic energy is reduced to zero. Before and after a collision, the total kinetic energy are, respectively:
Ka=mv^2
Kb=0
Momentum is the result of a particle's mass and velocity. A vector quantity with both magnitude and direction is momentum. Isaac Newton's second equation of motion states that the force applied to a particle is equivalent to the time rate of change of momentum.
Any grouping of particles has a momentum equal to the vector sum of their momenta. A modification in one particle's momentum is perfectly balanced by a modification in the momentum of another particle, according to Newton's third law, which states that particles exert equal and opposite forces on one another.
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which statement best describes what happens during this process?
The opposite charges are pulled away in solution and become free. Option D
What is solvation?We know that when we add an ionic substance into water that the ionic substances would become dissolved in the water. The meaning of this is that the ions that are in the substance would be drawn apart by the molecules of water. The process that makes the ions to be drawn apart by water is what we call solvation.
Now when there is solvation, we would notice that the positive end of the water dipole would surround the negative ion and the negative part of the water dipole would surround the positive ion.
Here we can see that the chloride ion is surrounded as such as so also is the potassium ion. This would lead to the pulling apart of the ions by the water and they become free in solution.
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A 10.00kg ball moving at 1,7m/s collides with a 5.00kg ball at rest. If the velocity of the heavier ball is 3,4m/s after the collision, how much velocity will the lighter ball have?(after the collision)
The velocity of Ball B be after the collision is 3.4m/s.
Please explain the law of conservation of momentum and provide two examples.For a collision between two bodies, in accordance with the law of conservation of momentum. Total kinetic energy prior to impact equals total kinetic energy following impact. m1u1+m2u2=m1v1+m2v2. For instance, a gun will recoil after firing a shot. A certain amount of force is applied when the shot is fired and leaves the barrel.
Using the law of conservation of momentum;
mAuA+ mBuB = mAvA+mBvB
Substitute the given values
10(1.7) + 5(0) = 10(3.4) +5vB
17 + 0 = 34 +5vB
17-34 = 5vB
-17 = 5vB
vB = -3.4
vB =3.4m/s
Hence the velocity of Ball B be after the collision is 3.4m/s.
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what is mesothermal climates
Answer:
Mesothermal regions have moderate climates. They are not cold enough to sustain a layer of winter snow but are also not remain warm enough to support flowering plants (and, thus, evapotranspiration) all year.
Explanation:
Please give the brainliest.
determine the temperature at which the celsius and fahrenheit scales give the same numerical reading (tc
There seems to be one location where the Fahrenheit or Celsius scales meet. At both -40 °C und -40 °F, they are equal.
Why is the Celsius scale so widely used?Because it is used in conjunction with the metric scale, the Fahrenheit scale is more frequently utilized. It makes reasonable that they utilize the Celsius scale as well since the majority of nations use the metric system. It is also simpler to convert from Celsius to Kelvin for this reason.
How is Celsius read?The letters °C or just C can be used to denote temperatures in Celsius as a number of degrees. The temperature difference between boils and ice is 100 degrees Celsius, whereas it is 180 ° Fahrenheit.
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Consider a field of insects, all of which have essentially the same mass.
a. If the total momentum of the insects is zero, what does this imply about their motion?
b. If the total kinetic energy of the insects is zero, what does this imply about their motion?
If the total momentum of the insects is zero, this means all of the insects are at rest or are moving in opposite of each other. Same if the total kinetic energy is zero.
What is momentum?Momentum is the quantity of motion which is multiplied by the amount of matter moved i.e., mass and the velocity at which it moves. Because, the object is in motion, it is a vector quantity, it has both direction and magnitude. It is determined by the product of the object's mass and the velocity of object.
If the total momentum of the insects is zero, this could mean anything of the two things. Either, all of the insects are at rest or an equal amount of insects are moving in opposite direction of each other which cancels out the total momentum of the insects.
If the total kinetic energy of the insects is zero, this means either all of the insects are at rest or an equal amount of insects are moving in opposite direction of one another which results into canceling out the energy.
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Which type of mass movement do you think is the least dangerous. Explain your answer!
It is a sluggish, protracted mass movement called creep soil.
What forms of mass movements are there?Creep, Fall, Slip, Flow, Solifluction, Rock Glaciers, Slumping (Earthflow), Mudflow (Lahar), Debris Flow, Debris Slide, Debris Avalanche, Rockslide, Rockfall, and Debris Fall are a few examples of mass movement types.
What kind of mass movement occurs gradually?The very slow, frequently continuous migration of regolith down slope is known as creep. Almost all slopes experience creep, but the rates vary.
Which kind of mass mobilization is the most harmful?A landslide is the most harmful kind of mass movement and happens when rock and dirt suddenly slip down a steep slope.
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FILL IN THE BLANK. power supplies all provide the same voltages to a system, such as 3.3v, 5v, and 12v. each of these can be referred to as a___, because each one comes from a specific tap within the power supply.
Linear regulated because each one comes from a specific tap within the power supply.
What are the four power supply stages?The four main processes shown in a block diagram of a regulated DC power supply are step down transformation, rectification, DC filtration, and regulation. Unregulated power supply and regulated power supply are the two categories that define DC power supply designs. The controlled power supply can be switched or linearly regulated.
What three types of power supplies are there?Battery-based, switched, or linear? Regulated power sources can be divided into three categories: battery-based, switching, and linear. Although switching and battery power have advantages, linear is the least complex of the three fundamental regulated power supply systems.
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Which of the following is NOT
an agent of mechanical
weathering?
a. ice
c. acid
b. wind
d. gravity
BioFlix Activity: Gas Exchange -- Oxygen Transport Drag each label to the appropriate location on the flowchart. 4 of 10 Reset Help Oxygen is carried through blood Oxygen diffuses from the alveoliinta Oxygen ditluses from the blood to the body's tissues Oxygen ones a red blood cell Oxygen binds to molecule of hemoglobin capilary
Oxygen Transport Drag each label to the appropriate location on the flowchart is attached.
What is gas Exchange?The biological process of gases being moved across cell membranes to either leave or enter the blood is known as gas exchange. Cells continuously require oxygen for aerobic cellular respiration, which also continuously emits carbon dioxide as a waste product.
Throughout the body, gas exchange occurs between the blood and the cells, with oxygen leaving the blood or entering the cells and carbon dioxide entering the blood. Additionally, there is a gas exchange between the blood and the air in the lungs, with carbon dioxide leaving the blood and entering the air to be expelled from the lungs, and oxygen entering the blood from the inhaled air inside the lungs.
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suppose that a lone asteroid happens to be passing jupiter on an unbound orbit (well above jupiter's atmosphere and far from all of jupiter's moons.) which of the following statements would be true?
The asteroid would continue on its original, unbound orbit when it left Jupiter, with no alteration to its orbital path.
Does 2022 see the arrival of an asteroid?The greatest planet-killing-sized asteroid in eight years has been found, according to astronomers, and it will cross Earth's orbit. Researchers seeking for space pebbles in the orbits of Earth and Venus discovered the asteroid 2022 AP7, which they called.
An asteroid could be stopped.One method we might be able to change an asteroid's trajectory is through kinetic impactors. In order to use this method, an asteroid must be smacked in order to alter its orbit such that it is no longer a hazard to Earth.
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A body falls freely from rest on Earth [tex](g=-10 \mathrm{~m} / \mathrm{s}[/tex] )
1. The displacement at [tex]t=3 \mathrm{~s}[/tex] is
The displacement of the body falling freely from rest after t = 3 s is 45 m.
What is displacement?The displacement is simply the difference in the position of the two marks and is independent of the path taken when traveling between the two marks.
To calculate the displacement of the body, we use the formula below.
Formula:
s = ut+gt²/2Where:
s = Displacement of the objectt = Timeg = Acceleration due to gravityu = Initial velocityFrom the question,
Given:
u = 0 m/st = 3 sg = 10 m/s²Substitute these values into equation 1
s = (0×t)+(10×3²)/2s = 45 mHence, the displacement of the body is 45 m.
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what characteristics must earth's core have to generate a magnetic field?
Other molten metals such as iron. A magnetic field is produced when electrical charges pass through the Earth as a result of the Earth's spin, which also causes the core to spin.
What is magnetic field ?
It usually represents the region around the magnet where its force can be felt. We use the magnetic field as a tool to describe how the magnetic force is distributed in the space around and within something magnetic in nature.
A planet must fulfil three conditions in order to produce a magnetic field: 1) a molten, electrically conducting interior; 2) convection in the interior; and 3) a moderately rapid rotation. This sets up a process that is somewhat similar to a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy. Of the four terrestrial planets, Earth has the strongest magnetic field.
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an earth satellite of mass 500.0-kg is in a circular orbit at an altitude of 300 km above the earth's surface. the earth radius is 6380km, and the earth mass is 5.98 1024kg.
The speed of the satellite of mass 500.0-kg is in a circular orbit at an altitude of 300 km above the earth's surface is 7726.58 m / s
Fc = m v² / r
Fg = G M m / r²
Fc = Centripetal force
m = Mass
v = Tangential Velocity
r = Distance
Fg = Gravitational force
G = Gravitational constant
M, m = Masses
The rotational motion of the satellite is due to the gravitational force of Earth.
Fc = Fg
m v² / r = G M m / r²
v² = G M / r
v² = 6.67 * 10⁻¹¹ * 5.98 * 10²⁴ / ( 6380000 + 300000 )
v² = 39.89 * 10¹³ / 6680000
v² = 59.7 * 10⁶
v = 7726.58 m / s
Therefore, the speed of the satellite is 7726.58 m / s
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wo pieces of clay are moving directly toward each other. one piece having mass 300~\text{g}300 g is moving to the right at a speed of 1~\text{m/s}1 m/s. the other piece has mass 600~\text{g}600 g and is moving to the left at a speed of 0.75~\text{m/s}0.75 m/s. when they collide, they stick together and move as one piece.
The percentage of the total initial kinetic energy that is lost during the impact is 11/17J. Because two bits of clay are travelling straight toward one another at a speed.
They stick together and move as a unit when they crash into each other. A moving object or particle's kinetic energy, which depends on both mass and speed, is one of its characteristics. The type of motion can be vibration, translation, rotation around an axis, or any combination of these. Kinetic energy is a type of energy that an item or particle possesses as a result of motion.
Piece weight is 300 g.
1 m/s for each piece's speed
The other portion weighs 600 g.
0.75 m/s is the speed of the other piece.
making use of the kinetic energy formula
K.E = 1/(m1+m2)v2 K.E = 1/(300*10-3+600*10-3)*(-0.5)2\s
K.E = 0.1125J
Energy wasted equals 11/17J - 0.1125/0.31875 energy lost
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The complete question is -
Two pieces of clay are moving directly toward each other. When they collide, they stick together and move as one piece. One piece having mass 300 g is moving to the right at a speed of 1 m/s. The other piece has mass 600 g and is moving to the left at a speed of 0.75 m/s. What fraction of the total initial kinetic energy is lost during the collision?
Although Arturo has looked at his watch thousands of times, he is unable to recall whether the watch features Arabic or Roman numerals. This is most likely due to a failure in a. implicit memory. b. iconic memory. c. encoding. d. storage. e. retrieval.
The most likely cause of Arturo problem is due to a failure of encoding.
option C is the correct answer.
What failure of encoding memory?Encoding Failure refers to the brain's occasional failure to create a memory link.
Encoding refers to the brain's ability to store and recall events and information, either short or long-term.
There are several reasons that can cause the failure of the encoding memory and they include the following:
trauma,the use of substances car accidentGenerally, any damage the memory can cause encoding failure.
Thus, if Arturo has looked at his watch thousands of times, and he is unable to recall whether the watch features Arabic or Roman numerals, we conclude that it is encoding failure.
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a block is pulled along a surface of negligible friction by a spring scale that exerts a force f on the block. the mass of the block is 4kg, and the spring scale reads 10n. which of the following free-body diagrams can be used to show the magnitude and direction of all the forces exerted on the block as it is pulled along the surface?
The correct free-body diagram is the one shown in option C
What is the correct free-body diagram?We know that the free-body diagram could be used to identify the forces that are acting on an object. We know that the normal force that acts on an object must be equal to the weight of the object and this is represented as lines of equal length on the free-body diagram.
We can now see that the correct free-body diagram is one in which the magnitude of the force weight and the normal force is the same. Now the force on the spring would be shown as the forward force.
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why would it be advantageous to use super conductor in MRI machine?
Advantages of superconducting MRI systems include better performance, the highest temporal and spatial homogeneity of the magnetic field, high signal-to-noise ratio (SNR), the shortest scan time, and the highest patient throughput.
What is MRI?
Radiologists employ magnetic resonance imaging (MRI) as a medical imaging technology to create images of the body's anatomy and physiological functions.
Strong magnetic fields, magnetic field gradients, and radio waves are used in MRI scanners to provide images of the body's organs.
MRI differs from CT and PET scans in that it does not utilize X-rays or ionizing radiation. Nuclear magnetic resonance (NMR) has several medical applications, including MRI.
NMR can also be used for imaging in other NMR applications, like NMR spectroscopy.
In hospitals and clinics, MRI is frequently used for disease staging, diagnosis, and follow-up.
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a wiggle in time is a
Answer:
A wiggle in time is called vibration. A wiggle in space and time is called wave. A wave is disturbance over the space. Distinguish between the propagation of sound waves and the propagation of light waves. Sound waves are mechanical waves.
