Answer:
Light is made up of different wavelengths, or colors, and white light is a combination of all of them. When a ray of white sunlight hits a patch of beach ball, the paint absorbs most of the wavelengths. It reflects the rest. For example, if the patch is blue, it reflects the blue wavelengths and absorbs all the others.
We see different wavelengths of light as different colors because they are associated to different wavelength, which activates different cells in the retina.
Where do high tides occur? (Select all that apply.)
1: on the side of Earth facing the Moon
2: only at the North Pole
3: only at the South Pole
4: at both the North and South Poles
5: on the side of Earth opposite the Moon
(I NEED HELP ASAP I'LL GIVE BRAINLIEST)
When the Earth's surface is turned toward the Moon, high tides happen as a result of the Moon's gravitational pull.
The term "high tide" refers to the high tide on the side of the Earth that faces the moon. The term "low high tide" refers to the high tide brought on by the bulge on the other side of the Earth. The water juts out toward the moon in the vast ocean. The water rises and spills onto the land along the coastline.On the sides of the Earth that face the Moon and away from it, high tide occurs. The ocean is on the sides of the Earth that face the Moon, which causes the Moon to pull on the Earth. The Earth stretches out both toward and away from the Moon to counteract this attraction. Tides are long-distance ocean waves. They are caused by the moon's and, to a lesser extent, the sun's gravitational pull on the earth. When the crest, or highest point, of a wave, hits a coast, it is said to be at high tide.To learn more about high tides
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a piece of clay adheres to the outer edge of a wheel of radius 0.700 m. the wheel rotates at a constant rate of 230 rev/min. what is the speed (in m/s) of the piece of clay? m/s
The speed (in m/s) of the piece of clay is 15.394 m/s
a = 338.527 m/[tex]s^{2}[/tex]
The rate at which an object's velocity with respect to time changes is referred to as acceleration In mechanics, acceleration refers to the rate at which an object's velocity with respect to time varies. Acceleration is a vector quantity (in that they have magnitude and direction).
The direction of the net force acting on an object determines the direction of its acceleration.
Is a vector an acceleration?
Yes, since it has both magnitude and direction, acceleration is a vector. The acceleration's magnitude and direction indicate whether or not the object is traveling faster in the same direction as it is being moved. This is an example of both acceleration and deceleration.
Acceleration is the process through which an object's speed changes over time, whereas velocity is the rate at which that object is traveling in a specific direction.
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sketch the corresponding velocity va time and acceleration va time graphs from the position vs time graphs
The corresponding velocity vs time and acceleration vs time graphs from the position vs time graphs are given below,
What are velocity vs time graphs ?The speed-time graph: A plot between speed and time is called a velocity-time graph. It depicts the motion of an object moving straight ahead. At any given time, the magnitude of velocity equals its instantaneous speed. Only 1-D motion is intended for its drawing, which accepts positive and negative values.
What are acceleration vs time graphs ?Acceleration-Time For a particle travelling in a straight path, the acceleration is displayed against time in the graph. The acceleration-time depicts time and acceleration values on the x and y axes, respectively.
What are position vs time graphs ?An object's distance from its beginning position at any given moment since it began moving is displayed on a position-time graph. The greater the slope of the line and the faster the object's speed changes, the steeper the line is. More location vs. time graph illustrations can be found in this two-part video series.
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5. What is Deviation?
6. a) Why don't walkers usually have a problem with deviation?
b) When might deviation be a problem for a walker trying to use a compass?
7. Why can deviation be a problem in ships?
8. Describe two ways of correcting for deviation in a ship.
A gait deviation is a a physiotherapy term. It refers to change in the gait cycle that affects the trunk, hip, knee, or ankle joint. Increased age and/or certain disorders might cause gait abnormalities. These diseases can be either musculoskeletal or neurological in origin.
Why don't walkers usually have a problem with deviation?Walkers don't usually have problem with gait deviation because, walking in itself helps to correct problems with gait deviation. Walking correctly exercises the muscles and skeletons associated with gait hence preventing deviation.
When might deviation be a problem for a walker trying to use a compass?Deviation might be a problem for a walker trying to use a compass if the walker is having or experiencing a Spastic Hemiparetic Gait.
It is distinguished by unilateral leg extension and circumduction, in which the paretic limb moves laterally (circumducts) during the swing phase. This is sometimes referred to as circumductory gait.
The compass can hardly be maintained pointed in the appropriate direction with this configuration.
Why would deviation be a problem when travelling in a ships?Sea travel is known to produce gait changes or deviation.
The reason for this is not far-fetched. Ships don't travel on smooth terrain.
The open sea is characterized by complex, oscillating motion of ships in three translational dimensions (surge, sway, and heave) and three rotational dimensions (roll, pitch, and yaw).
The ship is the base of support or ground surface for passengers and crew: body control must be changed to accommodate for the ship's 6 degrees of freedom oscillatory motion.
Changes in stride that define those who have fully acclimated to living at sea are one of the most well-known characteristics of this compensation.
Anecdotal evidence focuses on a "rolling gait" that is prominent enough to be seen by casual onlookers.
What are two ways of correcting for deviation in a ship?The two ways of correcting deviation are:
In other circumstances, physical therapy may be necessary to enhance balance, strength, and flexibility. You should also undergo fall prevention training.Maintaining good foot alignment may need the use of in-shoe splints or leg braces. In circumstances of uneven leg length, a shoe raise may be useful.Learn more about physiotherapy :
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Photons are shone on a piece of metal and one electron is ejected for each absorbed photon. What happens when the wavelength of light is decreased?.
The ejected electrons would have greater kinetic energy if the wavelength of light is decreased when Photons are shone on a piece of metal and one electron is ejected for each absorbed photon.
What is Kinetic energy?This is referred to as the type of energy which is possessed by a body by virtue of its motion and it has an inverse relationship with the wavelength of light.
This therefore means that as the wavelength of light is decreased, the kinetic energy of the ejected electrons will increase and vice versa which is therefore the reason why it was chosen as the most appropriate choice.
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a 100 w incandescent light bulb converts approximately 2.5% of the electrical energy supplied to it into visible light. assume that the average wavelength of the emitted light is λ
The question is incomplete the right solution for this question is:
E photon = 2.39 eV, b = 6.32 * 1048 fotones/s, c = 9.87 * 1048 fotones/s.
To compute the answer, we must take into account the Plack postulate, which states that each photon's energy is given by
Ephoton is equal to h*f, where f is the frequency of light and h is the Planck universal constant.
We also know that the relationship between wavelength and frequency for waves has the following form:
velocity equals wavelength times frequency (f) Assuming that velocity in our case is the same as the speed of light, we can derive
Ephoton= h*f= h*c/ and hc= 1240 eV/nm are related terms.
Consequently, Ephoton=1240/540 nm=2.39 eV
Since power is defined as energy/time, we may calculate the power emitted by considering a number per second (n) and multiplying it by its energy.
Power in this instance: n*h*f
On the other hand, we must take into account that the light is emitted isotropically in order to compute the number of photons per second at a distance of 5 m from a light bulb using an area of 2 cm2.
the percentage of the 2 cm2 at 5 meters is 425 of the total area radiated.
0.02*0.02/25=1,6*10^-5
To perform the calculations for photons at 810 nm, we must alter the photon energy to 1.53 eV.
As 810 nm photons have lower energy, 100 W light bulbs emit more of these photons than they do.
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If it takes a planet 2.8 × 108 s to orbit a star with a mass of 6.2 × 1030 kg, what is the average distance between the planet and the star? 1.43 × 109 m 9.36 × 1011 m 5.42 × 1013 m 9.06 × 1017 m
The average distance between the planet and the star is:
R=9.36*10^11 m
Orbital velocity v=√{(G*M)/R},
G = gravitational constant =6.67*10^-11 m³ kg⁻¹ s⁻²,
M = mass of the star
R =distance from the planet to the star.
v=ωR, with ω as the angular velocity and R the radius
ωR=√{(G*M)/R},
ω=2π/T,
T = orbital period of the planet
To get R we write the formula by making R the subject of the equation
(2π/T)*R=√{(G*M)/R}
{(2π/T)*R}²=[√{(G*M)/R}]²,
(4π²/T²)*R²=(G*M)/R,
(4π²/T²)*R³=G*M,
R³=(G*M*T²)/4π²,
R=∛{(G*M*T²)/4π²},
Substitute values
R=9.36*10^11 m
As was already said, Earth is located roughly 150 million kilometres (93 million miles) from the Sun on average. It is 1 AU. Mars is on our fictitious football field's three-yard line. On average, the distance between the Sun and the red planet is around 142 million miles (228 million kilometres).
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The complete question is ''If it takes a planet 2.8 × 108 s to orbit a star with a mass of 6.2 × 10^30 kg, what is the average distance between the planet and the star? 1.43 × 10^9 m 9.36 × 10^11 m 5.42 × 10^13 m 9.06 × 10^17 m''.
which adc compares a known voltage to the unknown measurement voltage, continually adjusting the known voltage until its value equals that of the unknown measured value.
You should also be familiar with the term "reference voltage," which is significant. A known voltage, referred to as the Reference voltage, is compared against an unknown voltage during an ADC conversion to determine its value.
What is reference voltage?An electrical device called a voltage reference produces a fixed voltage in the ideal case regardless of the device's load, changes in the power source, changes in temperature, or the passage of time.
When conditions like source voltage or ambient temperature fluctuate, a voltage reference is a precision device created especially to keep the output voltage constant.
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A jogger takes 3.5 min to run once around a square block that is 220 m on each side. What is the jogger’s average velocity?
Answer:4.2 miles/hour
Explanation:
220 each side = 880 meters total
880/3.5 = 251 is how many meters per minute
multiply by 60 to get per hour
A 28.5 g sphere is added to a graduated cylinder containing 45.50 ml of water. The water level rises to the 49.10 ml mark. What is the volume of the sphere? What is its density? Based on its density, what type of metal is it?
According to this question, a 28.5 g sphere is added to a graduated cylinder containing 45.50 ml of water. The water level rises to the 49.10 ml mark.
This means that the volume of the sphere can be calculated as follows: 49.10mL - 45.50mL = 3.6mL.
The density can be calculated by dividing the mass by its volume as follows:
Density = 28.5g ÷ 3.6mL = 7.92g/mL
Based on the density of the sphere, it is incoloy.
Therefore;
The volume of the sphere that weighs 28.5g is 3.6mLThe density of the metal sphere is 7.92g/mL.Learn more about density at: https://brainly.com/question/6107689
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describe the energy transfers taking place as the cyclist starts to pedal
Answer: You pedaling the bike is transforming chemical energy, supplied by the breakdown of the food you eat, into mechanical energy to turn the pedals. The chemical energy is potential and the mechanical energy is kinetic.
Explanation: hope this helps
Answer: At the start of the ride, the cyclist initially has chemical energy stored in his/her body as a result of the cyclist’s food intakes. This chemical energy in the cyclist is then converted to kinetic energy on the bike pedal due to the cyclist applying a downward force upon the bike pedal.
Explanation:
If the same change in velocity occurs in less time does the magnitude of the corresponding average acceleration increase, decrease, or stay the same
The magnitude of the related average acceleration will increase if the same change in velocity occurs in less time.
The rate at which a body's distance changes in relation to time is referred to as its velocity. The SI unit is meter per second ( m/s).
Acceleration is the rate at which speed and direction of velocity vary over time. When something moves faster or slower, it is considered to be accelerating. Motion on a circle accelerates even while the speed is constant because the direction is always changing.
Acceleration can be defined as the time rate of change in velocity
a = Δv / t
Now as t is in the denominator.
The smaller value of time will result in greater acceleration values with constant velocity change.
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Animals often use more than one type of clue to help them navigate. These clues include a sense of smell ('olfaction') and remembering landmarks as well as using the Sun or the Earth's magnetic field. Suggest why an animal might use more than one type of clue to find its way.
Answer pls, will give 30 points.
Finally, they rely on a variety of environmental cues such as the length of the day, the Sun's position and angle in the sky, water salinity and temperature gradients, and the Earth's magnetic field. They do this to navigate effectively.
What is animal navigation?Animal navigation refers to the ability of many animals to find their way around without the use of maps or instruments.
Birds like the Arctic tern, insects like the monarch butterfly, and fish like salmon migrate thousands of miles to and from their breeding grounds on a regular basis, and many other species navigate effectively over shorter distances.
Several animal species can use a variety of cues to help them orient and navigate effectively. Insects and birds can identify where they are and navigate by combining learned landmarks with sensed direction (from the earth's magnetic field or from the sky).
Thus, this is why an animal might use more than one type of clue to find its way.
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A lime is thrown upward with a velocity of 5 m/s.
The maximum height reached by the lime thrown upward is 1.28 m.
What is maximum height of a projectile?The maximum height of a projectile is the highest vertical position along its trajectory.
The maximum height reached by the lime thrown upward is calculated as follows;
v² = u² - 2gh
where;
u is the initial velocity of the limeh is the maximum height reached by the limeg is acceleration due to gravityv is the final velocity of the limeAt maximum height, the final velocity of a projectile is zero.
Substitute the given parameters and solve for the maximum height reached by the lime.
0 = u² - 2gh
h = u²/2g
h = (5²)/(2 x 9.8)
h = 1.28 m
Thus, the maximum height reached by the lime thrown upward is 1.28 m.
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Two forces with magnitudes of 25n and 18n respectively are inclined at an angle of 120 degrees to each other. calculate the resultant force and the angle it makes with the 18n force
Answer:
ufifufogifsotufidogifidofut
One fitness magazine suggested that the food that you eat is like a battery because it has energy. Do you think that the banana that Mila ate had energy? Explain why you think this.
When food is kept in storage, it has chemical energy as potential. Chemical energy in food is transformed into fuel for our bodies when a person eats it.
Thermal energy, which keeps us warm, is the fuel for our bodies. \
When a human moves, the chemical energy is also transformed into motion. Kinetic energy is the movement.
Because food gives the human body the chemical energy it needs to carry out its daily tasks, the fitness magazine made the comparison between food and a battery in this instance.
The banana is a fruit that contains a lot of carbohydrates and fructose. Because of this, it is a great food to eat before exercise because it gives the muscles the chemical energy they need to perform better both before and after exercise.
The banana is also high in potassium, magnesium, phosphorus, and vitamins a and c, which gives it more strength and energy.
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a piano wire with mass 3.50 g and length 75.0 cm is stretched with a tension of 27.0 n . a wave with frequency 120 hz and amplitude 1.70 mm travels along the wire.
The average power carried by the wave is 0.29 W
We know that,
[tex]P_{avg}[/tex] = [tex]\frac{1}{2}[/tex] ω² A²√ ( μ F )
ω = 2 π f
μ = m / l
where,
[tex]P_{avg}[/tex] = Average power
ω = Angular speed
A = Amplitude
μ = Linear mass density
F = Tension
f = Frequency
m = Mass
l = Length
Given that,
m = 3.5 g = 0.0035 kg
l = 75 cm = 0.75 m
F = 27 N
f = 120 Hz
A = 1.7 mm = 1.7 * [tex]10^{-3}[/tex] m
μ = m / l = 0.0035 / 0.75
μ = 4.67 * [tex]10^{-3}[/tex] kg / m
ω = 2 π f = 2 * 3.14 * 120
ω = 754 [tex]s^{-1}[/tex]
[tex]P_{avg}[/tex] = [tex]\frac{1}{2}[/tex] ω² A²√ ( μ F )
[tex]P_{avg}[/tex] = [tex]\frac{1}{2}[/tex] ( 754 )² ( 1.7 * [tex]10^{-3}[/tex] )² √ ( 4.67 * [tex]10^{-3}[/tex] * 27 )
[tex]P_{avg}[/tex] = ( 821.5 * [tex]10^{-3}[/tex] ) √ 0.126
[tex]P_{avg}[/tex] = 821.5 * [tex]10^{-3}[/tex] * 0.36
[tex]P_{avg}[/tex] = 0.29 W
Average power is the measure of total work done by the body in a given amount of time.
Therefore, the average power carried by the wave is 0.29 W
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if an object is speeding up, . its acceleration is positive its acceleration can be positive or negative depending on the direction of motion its acceleration is negative
If an object is speeding up its acceleration can be positive or negative depending on the direction of motion.
What is positive and negative acceleration?According to mathematics, a negative acceleration indicates that the velocity will be subtracted, while a positive acceleration indicates that the velocity will be increased.
In physics,
A positive acceleration indicates a rising velocity over time.
Negative acceleration describes a speed decrease over time.
A bus or car going at an accelerating rate is said to have positive acceleration.
We may say that it is speeding up in the direction it is moving.
When we use the brake in the previous example, the speed of the car reduces.
Then it experiences a deceleration.
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Here is another extremely hard question you do not want to be faced with. Is there life after death? From today till the next hundred days to come, almost every (if not all) living persons now would be dead. Death is an inescapable event which no history has survived. So, people have come to accept the inescapable fate of a living thing which is death. Now, after one’s life has ceased here on earth, does another life begin elsewhere?
The existence of an afterlife or life after this one is uncertain.
Explanation:
Wether you're reincarnated or your soul is transported to another plane of existence, such as heaven or hell for example, is uncertain. For all we know we could just cease to exist. We are born to die. And we will not know what happens once we die until we die.
Then again, there are people who die and then are resurrected. Some say there was nothing, others say there was something. We will not know until we experience death ourselves.
A Plastic fork has a mass of 5g and a volume of 5.2cm³. What is the density of the plastic fork?
Answer: 0.96153846153846 g/cm3
Explanation:
A cheetah can maintain a constant speed of 30 m/s. At this rate, how far will it travel in 3 seconds? (Express you answer in m.)
Answer:
90m
Explanation:
it travels at 30 m/s so 30*3 is 90
2.4.3 Test (CST): Get Your Motor Running
Question 14 of 25
When drawing a vector, you should represent the magnitude of the vector by
the length of the arrow.
O
O
A. True
B. False
SUBMIT
Answer: True
Explanation:
When drawing a vector, you should represent the magnitude of the vector by the length of the arrow is true.
What are vectors?
The term "vector" in mathematics and physics is used informally to refer to some values that cannot be stated by a single integer (a scalar) or to certain members of vector spaces. In the past, vectors were first used to represent quantities with both a magnitude and a direction, such as displacements, forces, and velocity, in geometry and physics (usually in mechanics). Similar to how distances, masses, and time are represented by real numbers, these quantities are represented by geometric vectors.
In some circumstances, tuples—finite sequences of numbers with a definite length—are sometimes referred to as vectors.
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the earth's escape speed (the speed you need to get away forever) is about 25,000 miles per hour. escape speed depends on the gravity of the object trying to hold the spacecraft from escaping. based on your understanding of gravity, how will the escape speed from the moon compare to the escape speed from earth?
The Moon's escape velocity is less than the Earth's escape velocity.
We know that,
[tex]V_{e}[/tex] = √ 2 G M / r
where,
[tex]V_{e}[/tex] = Escape velocity
G = Universal gravitational constant
M = Mass of object
r = Radius of object
For the Moon,
G = 6.67 * [tex]10^{-11}[/tex] N m² / kg²
M = 7.35 * [tex]10^{22}[/tex] kg
r = 1737400 m
[tex]V_{e}[/tex] = √ [ 2 ( 6.67 * [tex]10^{-11}[/tex] * 7.35 * [tex]10^{22}[/tex] ) / 1737400 ]
[tex]V_{e}[/tex] = 2375.89 m / s = 5314.72 mil / hr.
Escape speed is the amount of speed required to escape the object's gravitational pull. The size or mass of the object trying to escape does not matter.
Therefore, the Moon's escape velocity is less than the Earth's escape velocity.
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Imagine the following objects in deep space, separated by a kilometre. which pair of objects experiences the largest gravity force? a proton and an electron an apple and a brick two apples an apple and a proton
The pair of objects that experiences the largest gravity force is an apple and a brick
An object will be weightless in outer space, away from the gravitational field of Earth (or another massive planet), yet it will still have mass and consequently resistance to a given force.
When one body has a higher mass than another, it is said to be more massive. The electron, with a mass of about 9.11 10-31 kg, is one of the Universe's least massive things. Hence, the combination of a proton and electron would experience the least gravity force. The combination of an apple and a brick has the most mass hence would experience the largest gravity force. Two apples or an apple and a proton are less massive compared to an apple and a brick thus incorrect.
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If a trapeze artist rotates once each second while sailing through the air and contracts to reduce her rotational inertia to one-third of what it was, how many rotations per second will result?.
The rotations per second will triple and she will rotate thrice per second.
The rotation of the trapeze artist is not influenced by any external forces or torques during the motion.Therefore, her total rotational momentum ([tex]I \omega[/tex]) should be conserved throughout the motion or during a transition.This question checks your primary understanding of this concept and you have to simply use the formula associated with the rotational momentum from one position to the other (expansion and contraction).The formula is like this, [tex]I_1 \omega_1 = I_2 \omega_2 = \text{constant}[/tex]. Here [tex]I[/tex] and [tex]\omega[/tex] have the usual meanings.Therefore, the calculation would look like the following,[tex]\begin{aligned}\\\\I_1\omega_1&= I_2 \omega_2\\\\I\omega &= \frac{I}{3}.\omega_2\cdots(I\, \text{could be cancelled out})\\\\\omega_2 &= 3I\end{aligned}[/tex]
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use the above information to answer the questions, Run 1 Distance between the intervals position (m) AB= 1,3 BC=1,3 CD 1,3 DE = 1,3 EF = 1,3 Perioel (P)=1/25×5 =0,2sec Run2 Distance between the intervals position (m) AB= 1,5 BC = 1,8 CD = 2 DE 2,2 EF=2,4 Draw a graph of position versus time for 2.1 Run 1 2.2 Run 2
Using the charter system conversation in the right angled value triangle we apply distance formula and get the G-plot value of 9.876 u.
How is position determined in velocity - time?The movement in a graph is determined through the two perpendicular axis in which the first coordinate represents the distance to be traveled in the x axis and the second coordinate shows the distance to be traveled in the y axis .
What is distance formula ?If you want to determine the distance between any two point in a graph the distance formula is used in such case the distance formula is applied like Pythagoras theorem.
Given:
A (1,3)
Period = 0.2 seconds
B (1,5)
Period = 0.5 seconds
Before applying distance formula we need to simplify the given value into charter system.
Where,
A become a substituted value for the argument of square on the basic structure.
Since A symmetrical is that of right angled triangle we can use the basic charter values.
Therefore A now become A(π,2)
Similarly B become B(e,nπ)
Using distance formula to find the graph plot we get:
AB = 5.6π - e×3.14
AB = 9.876
where AB is the distance between A and B.
Therefore using the charter system conversation in the right angled value triangle we apply distance formula and get the G- plot value of 9.876 u.
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a future space explorer has been kidnapped and is held prisoner on a planet in our solar system. with nothing else to do, our prisoner amuses herself by dropping her watch from eye level (170 cm) to the floor. she observes that the watch takes 0.95 s to fall. ignore air resistance.
The acceleration due to gravity of Jupiter is found to be 24.5m/s².
What is free fall?Any motion of a body in which gravity is the sole force acting on it is referred to as free fall in Newtonian physics. A body in free fall has no force acting on it according to general relativity, where gravity is reduced to a space-time curvature.
When gravity and the resulting acceleration are the only forces acting on an object, this is referred to as freefall in physics. A body falling freely due to the earth's gravity is what the phrase "freefall" refers to. Gravitational acceleration will result from this motion.
F = (G x m1 x m2)/r2
F = (6.67 x 10-11) (1.9 x 1027) (185) / ( 7.18 x 107)2
= 4547.8 N
Since the probe is on Jupiter's surface and the force we just discovered is the force of gravity on the surface between the two, this would also be the probe's weight.
Since F = mg:
4547.8 = 185g
24.58 m/s² = g
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An engineer in a locomotive sees a car stuck on the track at a railroad crossing in front of the train. When the engineer first sees the car, the locomotive is 380 m from the crossing and its speed is 24 m/s. If the engineer’s reaction time is 0.66 s, what should be the magnitude of the minimum deceleration to avoid an accident? Answer in units of m/s 2 .
Tropical rainforests are being cleared at a rate of 8 million hectares per year. How many football fields per hour are being deforested? One hectare is equal to 2.47 acres, and there are 1.32 acres in a football field. (Round to the nearest acre per hour.)
The number of football fields per hour that are being deforested is 1710 football fields.
How to convert hectares to acres?According to this question, tropical rainforests are being cleared at a rate of 8 million hectares per year.
This means that 8 million hectares are being cleared every 8760 hours, since there are 365 days in a year and 24 hours in a day.
1 hectare = 2.471 acres
8 million hectares = 19.77 million acres
If 19.77 million acres is cleared every 8760 hours
Per hour, 19770000 ÷ 8760 = 2256.8 acres is cleared.
Since there are 1.32 acres in a football field, this means that approximately 1710 football fields are being deforested per hour.
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an electron is to be accelerated from a velocity of 2.50×106 m/sm/s to a velocity of 9.00×106 m/sm/s . through what potential difference must the electron pass to accomplish this?
Through -212 V potential difference must the electron pass to accomplish this
What is Potential difference?The difference in electric potential between two points, which is defined as the effort required per unit of charge to move a test charge between the two places, is known as voltage, electric potential difference, electric pressure, or electric tension.
The initial kinetic energy of the electron is,
[tex]{K_i} = \frac{1}{2}mv_i^2[/tex]
Here, m is the mass of the electron and
is the initial velocity of the electron.
[tex]\begin{array}{c}\\{K_i} = \frac{1}{2}\left( {9.11 \times {{10}^{ - 31}}\;{\rm{kg}}} \right){\left( {2.5 \times {{10}^6}\;{\rm{m/s}}} \right)^2}\\\\ = 2.88 \times {10^{ - 18}}\;{\rm{kg}}\\\end{array}[/tex]
The final kinetic energy of the electron is,
[tex]\begin{array}{c}\\{K_f} = \frac{1}{2}\left( {9.11 \times {{10}^{ - 31}}\;{\rm{kg}}} \right){\left( {9 \times {{10}^6}\;{\rm{m/s}}} \right)^2}\\\\ = 3.68 \times {10^{ - 17}}\;{\rm{kg}}\\\end{array}[/tex]
[tex]\begin{array}{c}\\{V_1} - {V_2} = \frac{{3.68 \times {{10}^{ - 17}}\;{\rm{J}} - 2.88 \times {{10}^{ - 18}}\;{\rm{J}}}}{{ - 1.6 \times {{10}^{ - 19}}\;{\rm{C}}}}\\\\ = - 212\;{\rm{V}}\\\end{array}[/tex]
to learn more about potential difference go to -
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