In your own words, describe how matter is identified.
Answers
Answer:
matter is any substance built of atoms
Explanation:
if anything occupies space and have a mass than that object is identifed as matter.
Related Questions
Signal circuits should have less than a _______volt drop. group of answer choices 0.4 0.3 0.2 0.1
Answers
Signal circuits should have less than a 0.1 volt drop. Therefore, option D is correct.
In electrical systems, voltage drop refers to the drop in voltage caused by resistance in a circuit or component. Signal circuits that carry sensitive signals and require accurate transmission should ideally have minimal voltage drop to ensure reliable communication.
Signal circuits should drop no more than 0.1 volts to maintain signal integrity and prevent information distortion or loss. This stringent requirement is necessary to guarantee the quality and accuracy of the transmitted signal.
By minimizing the voltage drop, signal circuits can effectively maintain the strength and accuracy of electrical signals, enabling accurate and reliable communication within the system.
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atoms of one element give up their outer electron, which are in turn attracted to atoms of some other element to increase electron count in the outermost shell to eight
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Atoms of one element giving up their outer electrons, which are then attracted to atoms of another element to increase the electron count in the outermost shell to eight, is an example of ionic bonding.
In ionic bonding, one element, typically a metal, donates one or more electrons to another element, typically a nonmetal. The donating element becomes positively charged as it loses electrons, forming a cation, while the receiving element becomes negatively charged as it gains electrons, forming an anion. The opposite charges attract each other, creating an electrostatic force that holds the atoms together in an ionic compound. This transfer of electrons allows the receiving element to achieve a stable electronic configuration with a filled outermost shell, typically containing eight electrons, known as the octet rule. Ionic bonding is a fundamental process in the formation of many compounds, such as sodium chloride (NaCl) or table salt.
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If you double the distance between you and the center of Earth, what happens to the strength of the gravitational field you experience?
Answers
Answer:
The strength of gravity decreases.
An example of that would be if you were in space; you float around because there's no gravity.
A 10,300 kg railroad car traveling at a velocity of 19 m/s strikes a second boxcar at rest. If the two cars stick together and move off with a velocity of 6 m/s, what is the mass of the second car?
Answers
The mass of the second box car from the calculation is 22317 Kg.
What is the mass of the second car?We have to note that we can be able to obtain the momentum as the product of the mass and the velocity of the object that is to be studied. In the case of the cars that we have here;
The momentum before Collison = Momentum after collision
We would then have from the question;
(10300 * 19) + (M * 0) = (10300 + M) * 6
Let the mass of the second box car be M
Then;
195700 = 61800 + 6M
M = 22317 Kg
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a uniform cylinder of diameter .20 m and mass 12 kg rolls without slipping down a 37 degree inclined plane. the gain in translational kinetic energy of the cylinder when it has rolled 5 m down the incline of the plane is approximately
Answers
The gain in translational kinetic energy of the cylinder when it has rolled 5m down the incline of the plane is approximately 345.6 J.
Given data:
Diameter, d = 0.20 mRadius,
r = 0.10 mMass of cylinder,
m = 12 kgInclined angle, θ = 37°
Distance traveled by cylinder, s = 5m
We know that work done by the gravitational force is the change in potential energy.
W=Fhsinθ... (1)
The kinetic energy of rolling objects is equal to its rotational kinetic energy plus its translational kinetic energy.
K = 1/2Iω² + 1/2mv²... (2)
The moment of inertia of a solid cylinder I=mr²/2.
Using conservation of energy principle:
Gain in translational kinetic energy of the cylinder is equal to the loss in potential energy.
Thus,
½mv²=mgH-mgSins....(3)
When the cylinder rolls without slipping, its velocity is equal to its angular velocity multiplied by its radius
v=ωr
Therefore, the rotational kinetic energy can be expressed as
1/2Iω²=1/2mr²ω²/2.... (4)
Using equations (1), (2), (3), and (4),
we can find the gain in translational kinetic energy of the cylinder while it rolls 5m down the incline of the plane.
K=1/2mv²=1/2m(v=ωr)²=1/2mr²ω²/2=1/2Iω²=1/2(12)(0.10)²(2/2)=0.12J... (5)
Potential energy, P=mgh=mgSins=12(9.8)(5)sin37°=294.2 J... (6)
So, using equations (5) and (6), we can get the gain in translational kinetic energy of the cylinder to be approximately:
K = 294.2 J – 0.12 J = 294.08 J
Therefore, the gain in translational kinetic energy of the cylinder when it has rolled 5 m down the incline of the plane is approximately 345.6 J.
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An acrobatic airplane performs a loop at an airshow. The centripetal acceleration the plane experiences is 14. 7 m/s2. If it takes the pilot 45. 0 seconds to complete the loop, what is the radius of the loop? round your answer to the nearest whole number.
Answers
When a plane moves in a circle, it is subjected to a force that keeps it in a circle. This force is referred to as the centripetal force. The formula for centripetal acceleration is given as: ac =\((v^2)/r\)..
This formula can be re-arranged to solve for the radius of the circle: r = (v^2)/ac Where r is the radius of the circle, v is the velocity, and a is the centripetal acceleration. Given that the plane completes the loop in 45.0 seconds and experiences a centripetal acceleration of 14.7 m/s², the radius of the loop can be calculated as follows:r = (v^2)/ac Where: \(v = 2πr/T\).
The velocity of the plane is equal to 2πr/T, where T is the period of the loop)T = 45.0 second sac = 14.7 m/s²Therefore:r\(= [(2πr/T)^2]/acr = [(2πr/45.0)^2]/14.7r = 20.17 rr = 20\)The radius of the loop is approximately 20 m.
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You are assigning vlans to the ports of switch r1. what vlan number value is an assigned to the default vlan?
Answers
VLAN number 1 is commonly assigned to the default VLAN for efficient network management and administration purposes.
In the context of VLAN (Virtual Local Area Network) configuration on a switch, the default VLAN is typically assigned the VLAN number 1. The default VLAN serves as the default membership for switch ports that have not been explicitly assigned to any other VLAN.
When setting up VLANs on a switch, network administrators have the flexibility to create and configure multiple VLANs to logically segment the network. Each VLAN is identified by a VLAN number, which helps in distinguishing and isolating network traffic within different broadcast domains.
However, VLAN 1 is special and is reserved as the default VLAN. It is created automatically on most switches and includes all switch ports by default. The default VLAN is often used for management purposes, including switch administration and configuration.
Assigning VLAN number 1 to the default VLAN allows for easy management and ensures that all switch ports are part of the default VLAN unless explicitly configured otherwise. It serves as a fallback option in case a port is not assigned to any specific VLAN.
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As you watched the "Powers of Ten" video, you saw the universe on its smallest and largest scales. The distance scale corresponding to the atomic nucleus is 10-15 m, while the universe itself spans distances of 1024 m.
By how many orders of magnitude do these two scales differ? (Hint: use the technique for comparing powers of ten described in the "Powers of Ten and Scientific Notation"
Answers
To determine the difference in orders of magnitude between the scale of the atomic nucleus (10^-15 m) and the scale of the universe (10^24 m), we need to compare their exponents.
The order of magnitude represents the power of ten in scientific notation. In this case, the scale of the atomic nucleus is 10^-15 m, which can be written as 1 × 10^-15 m, and the scale of the universe is 10^24 m, which can be written as 1 × 10^24 m.
To find the difference in orders of magnitude, we subtract the exponent of the smaller value from the exponent of the larger value:
Exponent of the universe scale (24) - Exponent of the atomic nucleus scale (-15) = 24 - (-15) = 24 + 15 = 39
Therefore, the two scales differ by 39 orders of magnitude.
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An aircraft departs an airport in the central standard time zone at 0930 CST for a 2-hour flight to an airport located in the mountain standard time zone. The landing should be at what time?
(CST add 6 hours)
(MST add 7 hours)
Answers
Hello! I'd be happy to help you with this question. To find the landing time, we'll follow these steps:
1. Convert the departure time from CST to UTC by adding 6 hours: 0930 CST + 6 hours = 1530 UTC.
2. Add the 2-hour flight duration to the UTC time: 1530 UTC + 2 hours = 1730 UTC.
3. Convert the landing time from UTC to MST by subtracting 7 hours: 1730 UTC - 7 hours = 1030 MST.
Your answer: The aircraft should land at 1030 MST.
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What is the velocity of a person walking to the office from Mrs. Dozler's class if the person travels 50m in 60 seconds?
Answers
Answer:
Velocity (v) = 0.83 m/s
Explanation:
We know that
\(Velocity = \frac{Displacement}{Time} \)
So here distance displaced by the person = 50m
Time taken by the person = 60 sec
So velocity of the person =
\( \frac{50}{60} = 0.83 \: m/s \)
A laser emits a light beam with a wavelength of 630 nm. The jet passes a liquid with a refractive index of 1.3.
What is the wavelength of the light beam in the liquid?
Answers
Brainliest?
We can record images of people on film because of the work of which of the
following scientists?
A. Christian Doppler
B. Ibn al-Haytham
C. Sir Isaac Newton
D. Galileo Galilei
Answers
From the core concept introduced by Al-Haytham, modern cameras are created.
To find the answer, we have to know about the Camera Obscura.
What is Camera Obscura?Al-Haytham Ibn "The father of modern optics," so called, significantly improved the understanding of optics and, more specifically, visual perception. Ibn Al-Haytham mostly observed a partial solar eclipse using a camera obscura.Camera or Obscura is a dim area with the appearance of a box with a hole in one of the sides. The hole must be tiny enough to keep the light that entered it from the top.A picture of the surface it touches was produced as light entered the tiny hole ( as an example- the wall of the box). The image is frequently upside down and mirrored. Thus, the image was reversed. However, it was still able to record the colors of any item in front of it. And gradually, contemporary cameras are made from that fundamental idea.Thus, we can conclude that, from the core concept introduced by Al-Haytham, modern cameras are created.
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As the moon orbits earth, it’s direction constantly changes. Which of these fires is most likely causing this change to velocity?
Answers
Which of the following stat ements is true? a. The time constant is unitless and changes as the charge builds up on the capacitor O b. The time coan s unitless and is constant for a given circuit. C.The time constant has units of time and is constant for a given circuit. You build a circuit with a resistor, R, and a Capacitor, C. You determine that the time constant is T.Now you add another capacitor, also with a value of C, in parallel to the first capacitor.
Answers
The true statement is: c. The time constant has units of time and is constant for a given circuit.
To explain further, the time constant (T) of a circuit containing a resistor (R) and a capacitor (C) is given by the product of the resistance and capacitance values: T = R * C.
The time constant has units of time (typically seconds) and remains constant for a given circuit unless the resistance or capacitance values change.
When you add another capacitor with a value of C in parallel to the first capacitor, the equivalent capacitance (C eq) of the combined capacitors becomes 2C.
To find the new time constant (T') with the added capacitor, use the same formula: T' = R * C eq.
In this case, T' = R * 2C. The new time constant will be different from the original time constant T because the equivalent capacitance has changed.
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In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9. 80 m/s2. Ignore air resistance.
Answers
The flea's initial velocity as it jumps is -2.45 m/s, calculated by using kinematic equations considering maximum height, acceleration due to gravity, and time.
To track down the underlying speed (v0) of the bug as it leaves the ground, we can utilize the accompanying kinematic condition:
d = vi * t + 0.5 * a * t^2
Where,
d = 0.500 m (the greatest level the insect comes to)
a = - 9.80 m/s^2 (speed increase because of gravity)
t = the time it takes for the insect to arrive at the greatest level
Since the bug hops straight up and arrives at a greatest level, its last speed by then will be 0 m/s. We can likewise utilize the accompanying condition to track down t:
vf = vi + at
Where,
vf = 0 m/s (last speed at the greatest level)
a = - 9.80 m/s^2 (speed increase because of gravity)
Subbing t from this situation into the primary condition, we can settle for the underlying speed vi:
0.500 = vi * t + 0.5 * (- 9.80) * t^2
vi * t = - 4.9 * t^2
vi = - 4.9 * t
Presently, subbing t and vi into the subsequent condition, we can settle for t:
0 = vi + (- 9.80) * t
0 = - 4.9 * t + (- 9.80) * t
9.80 * t = 4.9 * t
t = 4.9/9.80 = 0.5 s
At last, subbing t into vi = - 4.9 * t, we can track down the underlying speed:
vi = - 4.9 * 0.5 = - 2.45 m/s
Hence, the underlying speed of the insect as it leaves the ground is - 2.45 m/s.
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The complete question is:
In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80 m/s. Ignore air resistance. A flea jumps straight up to a maximum height of 0.500 m . What is its initial velocity v0 as it leaves the ground?
David is driving a steady 31.0 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.90 m/s2 at the instant when David passes.
a) How far does Tina drive before passing David?
b) What is her speed as she passes him?
Answers
a) Tina drives approximately 69.93 meters before passing David.
b) Her speed as she passes him is approximately 34.77 m/s.
To find the distance Tina drives before passing David, we can use the equation:
\(\[d = ut + \frac{1}{2}at^2\]\)
where:
d is the distance traveled,
u is the initial velocity (0 m/s for Tina),
a is the acceleration (2.90 m/s² for Tina), and
t is the time.
First, we need to determine the time it takes for Tina to catch up with David. Since David is driving at a constant speed of 31.0 m/s, the time Tina needs to catch up can be found using the equation:
\(\[t = \frac{d}{v}\]\)
where:
\(\(t\)\) is the time,
\(\(d\) \\\) is the initial distance between Tina and David (0 m), and
v is the relative velocity of Tina with respect to David (31.0 m/s).
Substituting the values, we find:
\(\[t = \frac{0\,m}{31.0\,m/s} = 0\,s\]\)
Since Tina begins to accelerate at the instant when David passes, she starts from rest and requires no time to catch up.
a) Using the equation for distance, we find:
\(\[d = ut + \frac{1}{2}at^2 = 0 + \frac{1}{2}(2.90\,m/s²)(0\,s)^2 = 0\,m\]\)
Therefore, Tina does not drive any distance before passing David.
b) Since Tina catches up with David at the same instant he passes, her speed is equal to his speed. Thus, her speed as she passes him is approximately 31.0 m/s.
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Tina drives approximately 158.2 meters before passing David. Tina's speed as she passes David is 31.0 m/s.
Explanation:To find the distance Tina drives before passing David, we need to determine the time it takes for Tina to catch up with David first. We can use the equation:
d = v0t + 0.5at2
Where d is the distance, v0 is the initial velocity, a is the acceleration, and t is the time. Rearranging the equation to solve for t:
t = (v - v0) / a
Substituting the given values:
t = (0 - 31.0 m/s) / (-2.90 m/s²)
t ≈ 10.69 seconds
To find the distance:
d = v0t + 0.5at2
d = 0 + 0.5(-2.90 m/s²)(10.69 s)2
d ≈ 158.2 meters
Therefore, Tina drives approximately 158.2 meters before passing David.
To find Tina's speed as she passes David, we can use the equation:
v = v0 + at
Substituting the given values:
v = 0 m/s + (2.90 m/s²)(10.69 s)
v ≈ 31.0 m/s
Therefore, Tina's speed as she passes David is 31.0 m/s.
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Which is a limitation of using cellulose?
its lack of mass production
its lack of biodegradability
its harm to landfills
its high cost to recycle
Answers
Answer: It's lack of mass production
It is biodegradable. It does not harm landfills. It doesn't cost much to recycle.
I cannot find anything about mass production or if it costs a lot to recycle.
From the information I know, operating costs were expensive. Cellulose is always recycled and is good for the environment meaning it can't cost much to recycle
Since operating costs were high, it most likely won't be mass produced because it's too expensive.
Therefore I think the answer is its lack of mass production.
Answer:
its lack of mass production
Explanation:
Electric charge can be built up on what material in the form of static electricity?
A. insulators
B. conductors
C. Semiconductors
D.Superconductors
Answers
Copper, silver, gold and steel are some examples.
Appreciate if I could get brainliest
Which digital text feature plays music or speaking on its own?
a
Animation
b
Interactive elements
c
Sound
d
Text
Answers
Answer: a
Explanation:
Answer:
C
Explanation:
"speaking on it's own " Those key word told me sound ,text and animation would not be correct
during a crash a dummy with the mass of 60.0 kg hits a airbag that exerts a constant force in the dummy the acceleration of the dummy is 250 m/2 what force did the airbag exert on the dummy?
Answers
Explanation:
F = ma
F = (60.0 kg) (250 m/s²)
F = 15,000 N
During a crash, a dummy with a mass of 60 kg hits an airbag, then the airbag will exert 15,000 N force on the dummy.
What is acceleration?The rate of change in an object's velocity concerning time is known as acceleration in mechanics. The vector quantity of accelerations. The direction of the net force that is acting on an object determines its acceleration.
Since acceleration has both a magnitude and a direction, it is a vector quantity. Velocity is a vector quantity as well. The definition of acceleration is the change in velocity vector over a time interval divided by the time interval.
There are several types of acceleration :
Uniform AccelerationNon-Uniform AccelerationAverage AccelerationAccording to the question, the given values are :
Mass, m = 60 kg
Acceleration, a = 250 m/s²
F = ma
F = (60.0 kg) × (250 m/s²)
F = 15,000 N
Hence, the force exerted by the airbag will be 15,000 N.
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A spacecraft flies within 500,000 km of each of these planets. Based on its mass, which planet would gravitationally attract the spacecraft the least?
Answers
Answer:
Mars
Explanation:
It would be Mars because Mars has the least mass out of al the planets in the Solar System, and that would affect its gravitational pull.
I hope it helps! Have a great day!
Anygays-
t the following structures in the order (from first to last) in which they process a visual stimulus (e.g., a light):
Answers
The main order of structures involved in processing a visual stimulus, from first to last, is:
Cornea, lens, retina, photoreceptors, bipolar cells, ganglion cells, optic nerve, optic chiasm, optic tracts, lateral geniculate nucleus (LGN), primary visual cortex (V1), higher visual processing areas, and association areas.The order in which visual stimuli are processed in the human visual system can be described as follows, starting from the entry point of the eye and moving towards the higher-level processing areas in the brain:
Cornea: The transparent outermost layer of the eye that focuses incoming light onto the lens. Lens: A flexible and transparent structure that further refracts and focuses the incoming light onto the retina.Retina: The light-sensitive tissue lining the back of the eye, composed of specialized cells called photoreceptors (rods and cones).Photoreceptors: The rods and cones in the retina that convert light energy into electrical signals.Bipolar cells: Neurons that receive input from photoreceptors and transmit the signals to the ganglion cells.Ganglion cells: Neurons that receive signals from bipolar cells and integrate information from multiple photoreceptors. The axons of ganglion cells form the optic nerve.Optic nerve: A bundle of axons from ganglion cells that transmit visual information to the brain.Optic chiasm: The point where the optic nerves from each eye partially cross over to the opposite side of the brain.Optic tracts: The pathways formed by the axons of ganglion cells after the optic chiasm.Lateral geniculate nucleus (LGN): A structure in the thalamus that receives visual information from the optic tracts and relays it to the visual cortex.Primary visual cortex (V1): Located in the occipital lobe at the back of the brain, V1 is the first cortical area to receive visual input. It processes basic visual features such as edges, orientation, and spatial frequency.Higher visual processing areas: Visual information is then transmitted from V1 to various higher-level visual processing areas, such as the posterior parietal cortex (involved in spatial awareness) and the inferotemporal cortex (involved in object recognition).Association areas: Visual information is further processed and integrated with other sensory and cognitive inputs in various association areas of the brain, allowing for perception, recognition, and interpretation of visual stimuli.It's important to note that the human visual system is incredibly complex, and this is a simplified overview of the main structures involved in processing visual stimuli.
The answer is general as no options are provided..
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jordan has a mass of 65kg and carlos has a mass of 78.0kg. jordan is running at 5.75m/s when he is tackled by carlos who is running in the opposite direction. after the collision of both players are at rest. calculate their velocity before the collision.
Answers
Given
mj = 65 kg
mc = 78 kg
voj = 5.75 m/s
after collision
vfj = vfc = 0 m/s
Procedure
The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
\(\begin{gathered} p_o=p_f \\ m_jv_{0j}-m_cv_{0c}=0 \\ m_jv_{0j}=m_cv_{0c} \\ v_{0c}=\frac{m_jv_{0j}}{m_c} \\ v_{0c}=\frac{65kg*5.75m/s}{78kg} \\ v_{Oc}=4.8m/s \end{gathered}\)
The velocity before the collision would be 4.8m/s
Thermal energy transfer portfolio 1
Answers
A thermal energy transfer portfolio would be an excellent way for students to showcase their knowledge and understanding of this important scientific concept.
Thermal energy transfer is the energy transfer between two or more objects that have different temperatures. This energy transfer can take place in three different ways: conduction, convection, and radiation. A portfolio is a collection of documents or pieces of work that demonstrate a person's skills, abilities, and achievements in a particular area.
Therefore, a thermal energy transfer portfolio would be a collection of documents or pieces of work that demonstrate a person's skills, abilities, and achievements related to thermal energy transfer. This portfolio could include lab reports, experimental data, diagrams, and explanations of the various ways thermal energy can be transferred.
For example, a student's thermal energy transfer portfolio might include:
1. A lab report detailing an experiment they conducted to measure the rate of heat transfer through different materials using conduction.
2. A diagram showing the process of heat transfer through convection in a fluid, such as air or water.
3. A written explanation of the concept of radiation and how it relates to thermal energy transfer.
4. A spreadsheet of data showing the temperature changes in a system as heat is transferred through it.
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In a circuit, what should the wire be crafted from?
A. An insulator, such as plastic
B. An insulator, such as rubber
C. An insulator, such as glass
D. An conductor, such as copper
Answers
Answer:
D. An conductor, such as copper
Explanation:Circuits work by transfering energy, and only a conductor can do that.
In a circuit, the wire should be crafted from An conductor, such as copper. Therefore correct option is D.
What is Wire?
Electric wire is a metal in the form of thin thread. this is responsible for the flow of electrons in it therefore it must be conducting. Wires are generally made up of copper, aluminum, gold and iron.
wire is made up of conducting metal tread and it is insulated by plastic or rubber to avoid shock.
when we look at the electric wire, it is made up of fine treads of conducting metal to make it more flexible and to increase surface area of the wire(as current flows on the surface of the wire).
An insulator wire can not pass current through it. therefore wire can not be made from insulator. Hence all first 3 options are wrong.
Hence option D is correct as copper is a good conductor.
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On the first part of a journey, a motor cyclists travels for 33 hours at an average speed of 60km per hour.On the second part of a journey, the same motor cyclists travels for 600 minutes at an average speed of 50km per hour.How far does the motor cyclists travel in total
Answers
Answer:
2480km
Explanation:
10) A 57-kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37° above the horizontal. If the tension in the rope is 142 N, how much work is done on the crate to move it 6.1 m?
Answers
F=m*a
T = 142N
Work = Force x distance
distance = 6.1 M
Force = 142 x cos 37 = 113.4 N
W= 113.4N x 6.1M = 691.78 J
Terminal strips are used as connection points between the control wiring inside the cabinet and inputs or outputs to the machine or control panel. T/F.
Answers
True. Terminal strips are indeed used as connection points between the control wiring inside the cabinet and inputs or outputs to the machine or control panel.
Terminal strips provide a convenient and organized way to connect and disconnect wires, making it easier to troubleshoot and maintain the control system. They typically consist of a long strip with multiple screw terminals, allowing wires to be securely attached. By connecting the control wiring to the terminal strips, it becomes simpler to interface with various components, such as sensors, actuators, switches, and other devices. Terminal strips play a crucial role in electrical and control systems, ensuring proper connections and efficient operation of the machinery or control panel.
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what is a amplitude
Answers
Answer:
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.
Explanation:
the maximum extent of a vibration or oscillation, measured from the position of equilibrium.
In astronomy amplitude is
the angular distance of a celestial object from the true east or west point of the horizon at rising or setting.
An electron with an initial speed of 380,000 m/s is brought to rest by an electric field.
1.
Did the electron move into a region of higher potential or lower potential?
Did the electron move into a region of higher potential or lower potential?
A. Because the electron is a negative charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential.
B. Because the electron is a negative charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential.
C. Because the electron is a positive charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential.
D. Because the electron is a positive charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential.
Answers
The correct option is A. The initial speed of the electron is specified. And it is to be brought to rest.
i. The field must produce an electric force that is opposed to the direction that the electron is moving in order to slow it down from its initial speed. As a result,
A. The electron must be going from a location of higher potential to a zone of lower potential because it is a negative charge and slows down as it moves.
ii. The potential difference that halted the electron can be calculated as,
ΔV = -mv²/2q = mv²/2e = 9.11 × 10⁻³¹ × (380000)² /2(1.602 × 10⁻¹⁹) = 9.11 × 38²× 10⁻²³ / (3.204× 10⁻¹⁹) = 4105.76 × 10⁻⁴ = 0.41 V
iii. The electron's kinetic energy is provided by,
ΔK = mv²/2 = 9.11 × 10⁻³¹× (380000)²/2 = 4.55 × 10⁻³¹× 38²× 10⁸ = 6570.2 × 10⁻²³ J × 1 eV/(1.602 × 10⁻¹⁹ J) = 6.57 × 10⁻²⁰ × 10¹⁹ /1.602 = 0.657/1.602 = 0.41 eV
The question is incomplete. The complete question is 'ii. What was the potential difference that stopped the electron? iii. What was the initial kinetic energy of the electron in eV?'
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