Electrons, like all other matter, exhibit the dual behavior of both particles and waves. Since electrons travel like waves, their energy is restricted to a certain energy level, each of which is associated with a specific wavelength.
Wave-particle Duality:Wave-particle duality is the idea that matter and energy have characteristics that are typical of both waves and particles. Depending on the circumstances, the matter may be seen as a wave or a particle.
Objects with huge masses, like baseball, have such small wavelengths that they are best regarded as particles. On the other hand, objects with small masses, like photons, have huge wavelengths and are best regarded as waves. However, objects with intermediate masses, like electrons, have characteristics of both particles and waves.
As a result, in 1924 de Broglie hypothesized that a particle like an electron may be characterized by a wave. Since electrons are waves, their energy is limited to specific energy levels, each of which corresponds to a given wavelength which is given by
[tex]\lambda =\dfrac{h}{mv}[/tex]
Where h ⇒Planck’s constant,
m ⇒ mass of the particle
v ⇒ velocity of the particle
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Fill in the blank:
Electrons, like all other matter, exhibit the dual behavior of both and Since electrons travel like waves, their energy is restricted to a certain energy , each of which is associated with a specific wavelength.
a soccer player takes a free kick from a spot that is 29 m from the goal. the ball leaves his foot at an angle of 41 ∘, and it eventually hits the crossbar of the goal, which is 2.4 m from the ground.
The speed of the ball when it left his foot is 11.13 m/s.
The given parameters;
distance of the goal, d = 17 m
angle of projection of the ball, = 38°
height of the cross bar, H = 2.4 m
The speed of the projectile will be calculated by applying the formula for maximum height reached by a projectile;
u=2x9.8x2.4/sin2(38)
u=11.13
Thus, the speed of the ball when it left his foot is 11.13 m/s.
What is projectile?
An object that is driven by the application of an external force and then moves freely while being affected by gravity and air resistance is referred to as a projectile. Despite the fact that all items traveling through space are projectiles, they are frequently used in sports and warfare.
Therefore,
a soccer player takes a free kick from a spot that is 29 m from the goal. the ball leaves his foot at an angle of 41 ∘, and it eventually hits the crossbar of the goal, which is 2.4 m from the ground.
u=2x9.8x2.4/sin2(38)
u=11.13
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According to history, the concept that all matter is composed of atoms was first proposed by.
The Greek philosopher Democritus, but not widely accepted until modern times.
Who first proposed the idea of atoms?It is believed that Leucippus of Miletus, who lived in the fifth-century BCE, invented the atomic philosophy. About 430 BCE, his illustrious pupil Democritus of Abdera gave the fundamental components of matter the atoms—literally, "indivisible"—name.The concept of the atom was first proposed by the Greek philosopher Democritus in 450 B.C.The oldest person whose dedication to atomism is extensively documented is Leucippus (5th century BCE). He is typically given credit for developing atomism.John Dalton, an English chemist, conducted several experiments in the early 1800s that helped solidify the concept of atoms. After the "dead of chemistry" in the previous 2000 years, he created the first atomic theory. Dalton proposed the idea that atoms make up all matter.According to history, the concept that all matter is composed of atoms was first proposed by: The Greek philosopher Democritus, but not widely accepted until modern times.
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A person riding in an airplane drops a rock out of the door of the plane which is moving at 550 mile/hr. The airplane remains on its original horizontal path and maintains a constant velocity. Where will the airplane be located when the rock hits the ground? neglect air resistance.
By using uniform motion, the location of the airplane when the rock hits the ground is ( 550 . √(2h/g) + h )miles.
We need to know about the uniform motion to solve this problem. The uniform motion is an object's motion under acceleration. It should follow the rule
vt = vo + a . t
vt² = vo² + 2a . s
s = vo . t + 1/2 . a . t²
where vt is final velocity, vo is initial velocity, a is acceleration, t is time and s is displacement.
From the question above, we know that
vo = 550 mile/h
Find the time taken to hit the ground
s = vo . t + 1/2 . a . t²
h = 0 . t + 1/2 . g . t²
t² = 2h/g
t = √(2h/g)
Find the distance traveled by plane
s = vo . t + 1/2 . a . t²
x = vo . t + 1/2 . a . t²
x = 550 . √(2h/g) + 1/2 . g . √(2h/g)²
x = 550 . √(2h/g) + h
the distance traveled is ( 550 . √(2h/g) + h )miles.
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A hot air balloon starts rising from ground with an acceleration 1.25m/second square. after 8 sec, a stone is dropped from the balloon, time taken to hit the ground will be ?
The stone that is dropped from the balloon, will hit the ground in a time of: 2.857 s
To solve this exercise the formula for uniformly varied rectilinear motion (UVRM) and free fall to be applied are:
h = vi * t + (a * t²) / 2t = √[ (2*h) / g]Where:
a = accelerationvi = initial velocityh = height traveledg = acceleration due to gravityt = timeInformation about the problem:
vi = 0 m/st = 8 sa = 1.25 m/s²h = ?g = 9.8 m/s²t = ?Applying the formula for UVRM we can calculate the height of the hot air balloon:
h = vi * t + (a * t²) / 2
h = 0 m/s * 8 s + [1.25 m/s² * (8 s)²] / 2
h = 0 m + [1.25 m/s² * 64 s²] / 2
h = 0 m + 80 m / 2
h = 80 m/ 2
h = 40 m
Knowing height of the hot air balloon and applying the time formula we can calculate the time taken for the stone to hit the ground:
t = √[ (2*h) / g]
t = √[ (2* 40 m) / 9.8 m/s²]
t = √[ 80 m / 9.8 m/s²]
t = √[ 8.163 s²]
t = 2.857 s
What is free fall?It is when the object or mobile falls from a height (h) with a positive acceleration equal to the gravity, describing a vertical rectilinear travel.
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Consider a balloon of mass 0.030kg being inflated with a gas of density 0.54kg/m. What will be the volume of the balloon when it just begins to rise in the air of density 1.29kg/m3. (g=10m/s2) Detailed Explanation Please
the weight of the balloon is .030 * 10 = 0.3 N
the weight of the gas of volume v is 0.54*10 N
The lifting force of a volume of v m³ of displaced air is 1.29v N
so, we need
1.29*10*v = 0.3 + 0.54*10*v
or
1.29v = 0.03+0.54v
The volume of the balloon will be 0.056 m³ when it just begins to rise in the air.
What is volume?
A measurement of three-dimensional space is volume. Numerous imperial or US customary units, as well as SI-derived units (such the cubic metre and litre), are frequently used to quantify it numerically (such as the gallon, quart, cubic inch).
The definition of length (cubed) and volume are connected. The volume of a container is typically thought of as its capacity, or the amount of fluid (gas or liquid) that it could hold, as opposed to the amount of space the container occupies.
Mass of the balloon is = 0.030 kg.
Density of the gas inside the balloon is = 0.54 kg/m³
density of air outside the balloon is 1.29 kg/m³
Hence, volume of the balloon is = mass of the balloon ÷ density of the gas
= 0.030 kg ÷ 0.54 kg/m³
= 0.056 m³
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What is the relationship between change in position and velocity?
Answer:
Position and velocity are both vector quantities. Because velocity is the rate of change of position with respect to time, there is a very close relationship between position and velocity. When the position remains constant, the corresponding velocity is zero because there is no change in position and the object is effectively at rest.
Explanation:
a plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. assume that the plane reaches the required takeoff velocity at the end of the runway. what is the time needed to take off?
tTO = 26.8 sis the time needed to take off a plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long.
What is time ?Time is the ongoing pattern of existence and things that happen in what seems to be an unbreakable succession from the past through the present and into the future. It is a constituent quantity of many measurements that are used to compare the lengths of events or the gaps between them, to compare the sequence of occurrences, and to measure the rates at which certain quantities in the physical world or in conscious experience change. In addition to the three spatial dimensions, time is frequently considered a fourth dimension.
Although time has long been a crucial topic for research in philosophy, theology, and science, no definition of time that is universally applicable and free of circularity has ever been reached by academics. However, a number of different industries and areas, including business, industry, sports, the sciences, and the performing arts, all incorporate.
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Which list of elements will behave similarly in a chemical reaction?
lithium (Li), boron (B), oxygen (O)
lithium (Li), sodium (Na) potassium (K)
sodium (Na), magnesium Mg), lithium (Li)
potassium (K), bromine (Br), krypton (Kr)
Answer:
I got you. its lithium (Li), sodium (Na) potassium (K)
Explanation:
They are all in the same group of the periodic table just look it up and look at group 1
a baseball is moving at a speed of 2.2\,\dfrac{\text{m}}{\text{s}}2.2 s m 2, point, 2, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction when it strikes the catcher's glove. the padding of the glove is compressed by 2.4\,\text{mm}2.4mm2, point, 4, start text, m, m, end text before the ball comes to a stop. we want to find the average acceleration of the baseball while it is compressing the glove. which kinematic formula would be most useful to solve for the target unknown? assume the initial direction of travel is the positive direction.
The average acceleration of the baseball while it is compressing the glove is 1008 10⁻³ m / s². The kinematic formula used is v² = v₀² - 2 a x.
What is acceleration?Acceleration is the rate of change in a moving object's speed and direction over time. When a point or object accelerates or decelerates, it is moving straight forward. Motion on a circle increases despite the same speed because the direction is always changing.
Because the acceleration occurs in the opposite direction as the speed and the end speed is zero, the sign is negative.
0 = v₀² - 2 an x
a = v₀² / 2x
Consider converting the magnitudes to the SI system.
x = 2.4 mm (1 meter / 103 mm) = 2.4 103 m
Let's compute.
a = 2.2²/2 2.4 10⁻³
a = 1008 10⁻³ m / s²
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How many moon diameters could you fit between
Earth and the moon?
Name the element with 4 valence electrons and 6 energy shells
Answer:
Carbon
Explanation:
Carbon has 6 protons or the electron distribution (equal to protons) is equal to 2 in first energy shell and 4 in the outer energy shell. This makes the carbon atom look out for four electrons to fill it's octet.
Answer: Carbon
Explanation:
carbon has 4 valence electrons (in the outermost shell) and it has 6 energy shells (also known as electron shells)
A small electric heater has a resistance of 15ohms when the current in it is 2 amperes. what voltage is required to produce this current.
A small electric heater has a resistance of 15ohms when the current in it is 2 amperes. what voltage is required to produce this current:V = IR, V = 2A x 15Ω, V = 30V.
What does voltage mean?The "pressure" that pushes electricity is referred to as voltage. A voltage is measured in volts (V), and greater voltages result in more electricity flowing to electronic equipment.Simply put, voltage—also known as an electromotive force—is the amount of energy in one charge. Voltage, then, is the variation in electric potential between two places. Simply put, the current is the pace at which electric charge flows.Customers are typically given 110 to 120 volts (AC) and 220 to 240 volts by power companies (AC). Typically between 110 and 1200 kV, the voltage of electric power transmission lines used to transfer electricity from power plants can be hundreds of times higher than consumer voltages (AC).A small electric heater has a resistance of 15ohms when the current in it is 2 amperes. What voltage is required to produce this current:
V = IR
V = 2A x 15Ω
V = 30V.
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When you drop a 0.36 kg apple, Earth exerts
a force on it that accelerates it at 9.8 m/s2
toward the earth’s surface. According to Newton’s third law, the apple must exert an equal
but opposite force on Earth.
If the mass of the earth 5.98 × 1024 kg, what
is the magnitude of the earth’s acceleration
toward the apple?
Answer in units of m/s2
The magnitude of the earth’s acceleration toward the apple is -9.8m/s^2.
What is gravity?The term gravity refers to the attractive force that acts towards the center of the earth. We know that force is a vector quantity hence it has both magnitude and direction. Given this fact, the acceleration that this force produces also must have a magnitude and a direction.
In this case, we have been told that the a force on it that accelerates the apple at 9.8 m/s2 toward the earth’s surface. Recall that according to Newton's third law, the apple does exert a force that is equal in magnitude to the force of gravity.
The acceleration that is produced by the force is of the same magnitude but in opposite direction to that produced by gravity. Thus, the magnitude of the earth’s acceleration toward the apple is -9.8m/s^2.
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the current world-record motorcycle jump is 77.0 m, set by jason renie. assume that he left the take-off ramp at 120° to the horizontal and that the take-off and landing heights are the same. neglecting air drag, determine his take-off speed.
The speed of his take off is 43.2 m/s if he left the take-off ramp at 120° to the horizontal and that the take-off and landing heights are the same. neglecting air drag.
What is velocity?Velocity is the directional speed of a moving item as an indication of its rate of change in position as seen from a specific frame of reference and measured by a specific time standard (e.g., 60 km/h northbound). The idea of velocity is crucial in kinematics, the part of classical mechanics that explains the motion of bodies.
A physical vector quantity called velocity requires both magnitude and direction to be defined. Speed is a coherent derived unit that expresses the scalar absolute value (magnitude) of velocity. Its quantity is expressed in SI (metric system) units of metres per second (m/s or ms1). For example, "5 meters per second" is a scalar while "5 meters per second east" is a vector.
We have given that
R = 77.0m
[tex]\theta_0[/tex] = 12.0°
The horizontal range of such projectile R is given from the relation :
[tex]R = \frac{v^2_0}{g} sin 2 \theta_0[/tex]
Here, [tex]v_0[/tex] is velocity of take-off & [tex]\theta_0[/tex] is the angle of take-off
With this in mind,
[tex]v_0[/tex] = [tex]\sqrt{\frac{gR}{sin2\theta_0}[/tex]
= [tex]\sqrt{\frac{(9.8 m/s^2)(77m)}{sin24}[/tex]
= 43.2 m/s
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A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0°c, the volume of the gas is 371 ml. To what temperature must the gas be heated to occupy a volume of 557 ml?.
The gas must be heated to 137˚C to occupy a volume of 557 ml.
The gas pressure will remain constant while the piston is free to move. So, we can resolve this using Charles' Law.
What is Charles's law?Charles' law states that, if the pressure is constant, the volume occupied by a fixed quantity of gas is precisely proportional to its absolute temperature.
The ideal gas rule has an exception known as Charle's law.
The law is applicable to ideal gases with constant pressure but varying temperatures and volumes.
The equation of Charles' law is PV = k where k may is constant.
When measurements are taken under constant pressure, Charles' law establishes a relationship between a gas's volume and temperature.
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Effect of Solvent:
1. Record the results.
1. H₂O =
2. alcohol =
3. glycerin =
2. In which liquid is the salt most soluble?
3. Using the concept of "Like dissolves like," explain why you got the results you did.
4. Explain how the choice of solvent affects the dissolving process.
1. H2O- The water completely dissolved the salt.
Alcohol- The alcohol dissolved the salt slightly.
Glycerin-The salt has not dissolved at all.
2. Water
3. Like dissolve like basically works on the principle of polarity. It means the substances which possess similar chemical properties may dissolve in each other. For example, ethanol can be dissolved in water because both are polar in nature whereas non-polar molecules can be dissolved in non-polar solvents only.
4. Generally, a solute dissolves faster in a warmer solvent than it does in a cooler solvent because particles have more energy of movement. For example, if you add the same amount of sugar to a cup of hot tea and a cup of iced tea, the sugar will dissolve faster in the hot tea.
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Answer:
this guy right but this is only part 1
Explanation:
Which object has the most thermal energy?
Gaseous substances have the highest thermal energy, followed by liquids and then solids under the same other conditions.
The total thermal energy of a substance is determined by its temperature, atomic composition, and physical condition. More thermal energy results from more atoms and a higher temperature.
Thermal energy, commonly known as internal energy, is the energy connected to microscopic types of energy in thermodynamics. Depending on the size of the system or the amount of chemical it contains, it is a sizable amount. The joule(J) is the SI unit for thermal energy. It is the energy in the system that is left after subtracting its collective kinetic energy and potential energy. The energy that results from rotation, vibration, motion, and interactions between molecules of matter are all examples of microscopic kinds of energy.Learn more about thermal energy here:
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A car, with an initial position of x=83.2 meters, undergoes a displacement of -153.0 meters. What is its final position? (Unit=m)
The final position of the car with an initial position of x = 83.2 m which undergoes a displacement of - 153 m is
We know that,
s = [tex]x_{2}[/tex] - [tex]x_{1}[/tex]
where,
s = Displacement
[tex]x_{2}[/tex] = Final position
[tex]x_{1}[/tex] = Initial position
Given that,
[tex]x_{1}[/tex] = 83.2 m
s = - 153 m
[tex]x_{2}[/tex] = -153 + 83.2
[tex]x_{2}[/tex] = - 69.8 m
Displacement is the the distance between initial and final positions of the object. It is denoted by s.
Therefore, the final position of the car is - 69.8 m
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What is the phase of the moon during a total solar eclipse?
Answer:
The moon should be in the New phase.
Explanation:
what does it mean to "convert" from 1 unit to another? Give an example.
Answer:
To convert is to change measuring units so that what is being measured may be more easily measured etc.
Answer:
A conversion factor is a number used to change one set of units to another by multiplying or dividing.
Explanation:
The appropriate conversion factor to an equal value must be used when a conversion is necessary.
For example, to convert inches to feet, the appropriate conversion value is 12 inches, equal to 1 foot.
In most psychological research, psychologists start with a hypothesis, usually based on established theory, then gather data through careful observations, and then analyze the data to determine if their observations support the hypothesis. in such situations, what type of reasoning are psychology researchers using?
Psychology researchers are using deductive reasoning.
In psychological researches, reasoning is important to reach conclusions. Two important types of reasoning used by researchers are: Inductive reasoning and deductive reasoning.
In deductive reasoning, psychological research starts with a hypothesis formed from a general theory and then try to establish it true in real cases. They start from predicted conclusions or assumptions first and then gather data through careful observations to support the hypothesis. After analyzing the data thus collected, they will prove their assumptions true in specific cases of the theory. So deductive reasoning is used to prove general ideas in empirical observations.
However, inductive reasoning is opposite to this approach. It incorporates the method of reaching conclusions by beginning with observed data to make new theories.
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What is the efficiency of a worm gear reducer if input torque is 6532 inch-pounds and output torque is 5623 inch-pounds?
Th efficiency of the worm gear reducer if input torque is 6532 inch-pounds would be 86%.
What is Worm gearWorm gears are a common power-transmission component used to reverse the direction of a rotating shaft's motion as well as to reduce speed and increase torque between non-parallel rotating shafts.
They are used on shafts with axes that are perpendicular and do not intersect.
What is a worm gear reducer’s efficiency?Worm gears typically have a ratio range of 5:1 to 60:1.
How effective is a single worm set?
The efficiency of a single worm set varies with ratio and speed; this efficiency can vary from 40 to 93%.
Calculationn = Output/input x 100
= 5623/6532 x 100
= 0.86 x 100
= 86%
Thus, the efficiency is calculated as 86%
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PLEASE HELP. 100 points!
The earliest light in the universe was orange. Describe how that light turned into the background microwave radiation we observe today.
An in line skater first accelerates from 0.0 m/s to 5.0 m/s in 4.5s then continues at this constant speed for another 4.5 s what is the total distance traveled by the in line skater
Assuming constant acceleration, the distance travelled in the first 4.5s is:
0.5*5.0*4.5 = 11.25m
The distance travelled in the next 4.5s is:
5.0*4.5 = 22.5m
The total distance travelled is:
11.25 + 22.5 = 33.75m
Explain why there are different colors of visible light. Due in a couple of minutes
Answer:
As the full spectrum of visible light travels through a prism, the wavelengths separate into the colors of the rainbow because each color is a different wavelength.
Explanation:
hop this helps
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.
a horizontal 52-N force is needed to slide a 50 kg box across a flat surface at a constant velocity of 3.5 m/s. What is the coefficient of kinetic friction between the box and the floor?
The coefficient of kinetic friction between the box and the floor is 0.11.
What is coefficient of friction?Coefficient of friction is a measure of the amount of friction existing between two surfaces.
The coefficient of kinetic friction between the box and the floor is calculated as follows;
F - Ff = ma
where;
a is the acceleration of the boxm is mass of the boxFf is frictional forceF is applied forceF - μmg = ma
at a constant velocity, acceleration, a = 0
F - μmg = 0
F = μmg
μ = F/mg
μ = (52) / (50 x 9.8)
μ = 0.11
Thus, the coefficient of kinetic friction between the box and the floor is 0.11.
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a sprinter walks up to the startng blocks at a constant speed and position herself for the start of the race. she waits until she hears thje starting pistol go off and then accelerates rapidly until she attains a constant velocirty
The distance ran by the runner in the 2 seconds is 2·A
The speed of the runner at the end of the 2 seconds is 2·A
Calculation
The given information are;
The distance the sprinter is running = 100 m
The initial constant acceleration of the sprinter, a = A
The duration of the initial acceleration, t = 2 s
The initial speed of the printer, u = 0 (The sprinter starts from rest)
The rate with which the sprinter then runs with to the end = Constant speed
Therefor, we have, from the equation of motion;
s = u × t + 1/2 × a × t²
Where;
s = The distance ran by the sprinter
∴ at t = 2 seconds, we have;
s = 0 × 2 + 1/2 × A × 2² = 1/2 × A × 4 = 2·A
The distance ran by the runner in the 2 seconds = 2·A
The speed, v, of the runner at the end of the 2 seconds is given as follows;
v = u + a × t
When t = 2 seconds, we have;
v = 0 + A × 2 = 2·A
The speed of the runner at the end of the 2 seconds = 2·A.
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if a gannet hits the water at , what height did it dive from? assume that the gannet was motionless before starting its dive.if a gannet hits the water at , what height did it dive from? assume that the gannet was motionless before starting its dive.
52.24 meters is the appropriate height to dive from.
How to calculate the height?Speed = v
Gravitational acceleration = g
v = 32m/s
h = v2/2g
= 32/ 2 * 9.8
= 52.24 m
Therefore, the height the gannet must dive from is 52.24 meters.
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The de broglie equation relates the wavelength and the kinetic energy of particles. What is the mass of a particle with a speed of 2. 34 × 106 m/s with a de broglie wavelength of 2. 25 × 10-9 m?.
The mass of the particle having a de Broglie wavelength of 2.25×10⁻⁹ m and moving with a speed of 2.34×10⁶ m/s is 1.26×10⁻³¹ kg.
The de Broglie equation relating the momentum of a particle with its de Broglie wavelength is given by:
λ=h/Mv
where 'λ' is de Broglie wavelength, 'h' is Planck's constant having its value as 6.626×10⁻³⁴ kg-m²/s and 'M' is the mass of the particle.
Using the above equation and the values of λ=2.25×10⁻⁹ m, v=2.34×10⁶ m/s, and h=6.626×10⁻³⁴ kg-m²/s;
λ=h/Mv
2.25×10⁻⁹ m=(6.626×10⁻³⁴ kg-m²/s)/(M×2.34×10⁶ m/s)
=>M=(6.626×10⁻³⁴ kg-m²/s)/(2.25×10⁻⁹ m×2.34×10⁶ m/s)
=>M=(6.626×10⁻³⁴ kg-m²/s)/(5.265×10⁻³ m²/s)
=>M=1.26×10⁻³¹ kg
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How does the frame of reference affect how an observer perceives motion?
A reference frame is a perspective from which you observe and measure things. Used to define the movement and position of objects. Two people can have different frames of reference for the same situation. In this case, they observe the movement and position of objects differently.
A reference frame is a perspective from which you observe and measure things. Used to define the movement and position of objects.
Two people can have different frames of reference for the same situation. In this case, they observe the movement and position of objects differently.
Units are a way of expressing measurements. It can consistently describe object velocity, mass, position, etc.
Scientists need to communicate their data clearly. They do this by sharing the units and frame of reference they use to measure.
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