This is the initial condition. This has the quantum numbers n=1, l=0, ml=0, and ms=+1/2. We call this "orbital" a 1s orbital since we only need the n and l.
An electron's ground state, or the energy level it ordinarily occupies, is its lowest energy state. There is also a maximum amount of energy that an electron can have while still being a component of its atom. These quantum numbers represent the size, shape, and spatial orientation of an atom's orbitals. The orbital's size is described by the primary quantum number (n). For example, orbitals with n = 2 are bigger than those with n = 1. The ground state is defined as n = 1, whereas higher n states are defined as excited states. As an electron in an atom transitions from a higher to a lower state, it loses energy.
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Which statement about the Native Americans in Carolina is true?
A.The Yamasee Indians left Carolina and joined the Iroquois Confederacy.
B.The Carolina settlers nearly destroyed the Cherokee tribe.
C.The Yamasee Indians joined the settlers to fight against the Cherokee.
D.The Yamasee and Tuscarora Indians left the area for new homes.
The statement that is true about the Native Americans in Carolina is (D). The Yamasee and Tuscarora Indians left the area for new homes.
In the early 1700s, the Yamasee and Tuscarora tribes, who had been allies of the British settlers in Carolina, turned against them due to various issues, such as trading problems and the settlers' increasing encroachment on their lands. The tribes launched attacks on the settlements, which led to a war that lasted for several years. The settlers ultimately defeated the tribes, and many Yamasee and Tuscarora Indians were forced to leave the area and seek new homes elsewhere. The war and subsequent displacement of Native Americans had a significant impact on the development of Carolina and the relations between the British settlers and Native American tribes.To know more about tribes visit:
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it is specified that a certain nut be tightened to a torque of 41 n*m. if the mechanic is using a 81 cm wrench, how much force must he apply to the end of the wrench to meet specs?
To torque the nut to the required 41 N*m, the mechanic needs apply a force of 50.62 N to the end of the wrench.
Is 40 times more torque needed to remove a nut from a wheel?The amount of torque needed to remove a nut from a car's wheel is 40.0 Nm. In order to remove the nut, the technician must use a minimum force of 40.0 Nm at the end of a 50.0 cm wrench.
We can apply the following formula to resolve this issue:
Torque = Force x Distance
where Torque is given as 41 N*m, Distance is the length of the wrench (81 cm = 0.81 m), and we want to find the Force.
So, we can rearrange the formula to solve for Force:
Force = Torque / Distance
Substituting the given values, we get:
Force = 41 N*m / 0.81 m
Force = 50.62 N
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because its orbit is tilted with respect to the earth-sun plane, the moon spends most of its time either above or below the plane. how many times would the moon cross through the earth-sun plane each time it orbits earth? explain.
Instead of being in the same or a different location from Earth during its orbit, the Moon is often above or below the planet.
What angle does the Moon's orbit have with regard to that of the Earth?In comparison to the plane of Earth's orbit around the Sun, the Moon's orbit is tilted by around 5 degrees. This tilt causes the Moon to typically pass above or below the Sun when it is between Earth and the Sun as seen from Earth.
What is the name for the Earth's tilt angle *?The obliquity of the ecliptic, or axial tilt of the Earth, is around 23.5 degrees. This axial tilt causes the sun to shine at various angles throughout the year on various latitudes. The result is the seasons.
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when a spring with a spring constant of 10 n/m has a 0.90 kg block attached to it and is then set into simple harmonic motion, how long does it take for the block to return to its starting position?
The time it takes for a 0.90 kg block to return to its initial position after being coupled to a spring with a spring constant of 10 n/m and put into simple harmonic motion is 1.88 seconds.
The time it takes for a block attached to a spring to complete one full oscillation (i.e., return to its starting position) in simple harmonic motion is given by:
[tex]T = 2\Pi\sqrt{(m/k)}[/tex]
here,
T is period of oscillation,
m is mass of the block, and
k is spring constant.
In this case, m = 0.90 kg and k = 10 N/m.
Reserving values :-
[tex]T = 2\pi\sqrt{(0.90 kg / 10 N/m)}[/tex]
[tex]T = 2\pi\sqrt{(0.09 m)}[/tex]
[tex]T = 2\pi * 0.3 m[/tex]
T = 1.88 s
Therefore, it will take approximately 1.88 seconds for the block to return to its starting position.
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Can a vector with zero magnitude have one or more components that are zero? Explain.
Yes, a vector with zero magnitude can have one or more components that are zero. This is because a vector's magnitude is determined by the length of its components, which can be zero even if the magnitude of the vector is zero.
What is magnitude?Magnitude is a measure of the size, intensity, or strength of something. It is most commonly used to describe the size of an earthquake, magnitude being a measure of its energy release. It can also refer to the size of an astronomical object, such as a star or planet, or the strength of a magnetic field. Magnitude is expressed using a logarithmic scale, with each increase in magnitude representing a ten-fold increase in the strength or size of an object. For example, an earthquake of magnitude 5.0 is ten times as powerful as one of magnitude 4.0. Magnitude is an important concept in physics, astronomy, and other sciences.
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in activity 1-1, how do you expect that your position-time graph will differ from those you observed in lab 1, where you were moving with a constant velocity?
If moving with a constant velocity, the position-time graph is a straight line with a constant slope.
What is a position time graph?
A position-time graph, also known as a displacement-time graph or distance-time graph, is a visual representation of the relationship between an object's position and time. In this type of graph, the position of an object is plotted on the vertical y-axis, while the time is plotted on the horizontal x-axis.
The position of the object at a specific time is shown by a point on the graph. Connecting these points results in a line that represents the object's motion over time. The slope of this line can provide information about the object's velocity or speed.
Position-time graphs are commonly used in physics to study the motion of objects, such as in the analysis of freefall, projectile motion, and uniform circular motion. By examining changes in position over time, scientists can calculate acceleration, displacement, and other important characteristics of an object's motion.
Therefore,If moving with a constant velocity, the position-time graph is a straight line with a constant slope.
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If you are moving with an accelerating velocity in Activity 1-1, then your position-time graph will be curved instead of linear.
What is velocity?Velocity is a vector quantity that measures the rate of change of an object's position. It is the rate at which an object's position changes over time and is usually expressed in terms of meters per second. Velocity can be calculated by taking the displacement of an object divided by the time it took for that displacement to occur. Velocity can also be expressed in terms of speed and direction, as it has both magnitude and direction. Velocity can be further defined as the rate at which an object's momentum changes. Momentum is the product of an object's mass and its velocity. In addition, velocity is important for understanding the physics of motion, as it is related to acceleration, which is a measure of how quickly an object's velocity changes.
The curve will be increasing at a steeper and steeper rate, indicating that your velocity is increasing.
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10. A wheel with radius 0. 33 m and rotational
inertia 2. 0 kg. M2 spins on an axle with an
initial angular speed of 3. 0 rad/s. Friction in
the axle exerts a torque on the wheel,
causing the wheel to stop after 6. 0 s. The
average torque exerted on the wheel as it
slows down has magnitude
The average torque exerted on the wheel as it slows down has a magnitude of -1.0 Nm.
In this case, the average torque has magnitude T = Iα, where I is the rotational inertia of the wheel and α is the angular acceleration. Using the rotational kinematics equation ωf = ωi + αt, we can calculate the angular acceleration:
α = (ωf - ωi) / t
where ωf is the final angular speed, ωi is the initial angular speed, and t is the time. In this case, ωf = 0, ωi = 3.0 rad/s, and t = 6.0 s, so the angular acceleration is α = -0.5 rad/s2. Plugging this value into the equation for torque, we get
T = 2.0 kg.m2 x (-0.5 rad/s2) = -1.0 Nm.
The negative sign is showing torque is in the opposite direction of the initial angular velocity.
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two point charges q1515.00 nc and q2523.00 nc are separated by 35.0 cm. (a) what is the electric potential at a point midway between the charges? (b) what is the potential energy of the pair of charges? what is the significance of the algebraic sign of your answer?
The electric potential at a point midway between the charges is approximately 3.27 x 10^6 V and the potential energy of the pair of charges is 288.5 x 10^-21 J.
The total electric potential at the midpoint is the sum of these two values:
V = V1 + V2 ≈ 3.27 x 10^6 V
Therefore, the electric potential at a point midway between the charges is approximately 3.27 x 10^6 V.
At a distance of 35.0 cm, the potential energy of the charges is:
U = (9.0 x 10^9 N·m^2/C^2) * (15.00 x 10^-9 C) * (25.23 x 10^-9 C) / (0.35 m) ≈ 288.5 x 10^-21 J
The algebraic sign of the answer is negative, which means that the two charges are attracted to each other and can do work as they move closer together.
Potential energy is the energy that is stored in an object due to its position or configuration. It is a form of energy that an object possesses by virtue of its relative position or state, and it has the potential to do work. The amount of potential energy an object has is directly related to its height or position in a gravitational field.
For example, if an object is held at a certain height above the ground, it has potential energy due to the gravitational force that pulls it towards the ground. This potential energy can be converted into kinetic energy when the object is released, and it falls towards the ground. Similarly, a compressed spring, a stretched rubber band, and a charged battery are all examples of objects that have potential energy.
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what units are used to measure mass in gravity calculations?
The S.I. unit to measure mass in all calculations including gravity related is kilograms.
What is kilogram?The kilogram is the SI unit of mass and it is the almost universally used standard mass unit.
Always remember that mass does not vary. If you measured the mass of an object here on Earth and on the Moon, you would find it was exactly the same. This is in line with common sense. If you take an object to the Moon, it is the same object, it looks exactly the same, and will have exactly the same reluctance to change its motion.
The simplest way to measure mass is not to compare the response of different objects to a force (so to gauge the mass in terms of their inertia or reluctance to accelerate). It is easier to compare two things with a beam balance than to measure their accelerations. If the masses are the same, the gravitational force on each will be the same and the beam will balance.
Concluding the concept of mass and the unit of conserved throughout the calculations which is kilogram here!
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how are the electric field lines oriented (relative to the surface of the conductor) close to the conductor? how does this relate to the previous question?
The electric field lines that are near a conductor are parallel to that conductor's surface. The "normal" direction is thought to be this one.
This relates to the preceding query since sound waves can cause an object to vibrate and emit its own sound waves when they strike a solid object, such as a conductor. Depending on the relative phase and amplitude of the waves, the interference with the original sound waves can be either constructive or destructive. Because it may have an impact on how waves interact with the conductor and produce interference patterns, the orientation of the electric field lines close to the conductor is crucial. In general, the conductor has a stronger impact on the sound waves the closer it is to the source of the sound, and the interference patterns might become more complicated as a result.
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what is the magnitude of the total force (in n) acting on the smiley face? do not type units in the answer box, or use scientific notation.
The formula below demonstrates how the mass of an item multiplied by its acceleration determines the size of the net force acting on it. When there is no net force acting on an object, it is in a condition known as equilibrium and is not moving forward.
What is the magnitude of the total force?Magnitude is the term used to describe a quantity's numerical value, which provides information on the strength of that quantity. As a result, the strength of a force is expressed by its magnitude.
When two forces of equal size are working in opposite directions—one in the east and the other in the west—the results of the two forces are not the same. Hence, both magnitude and direction must be provided in order to accurately characterize a force.
Therefore, [tex]F_n = 183.3 N[/tex] is the magnitude of the total force (in n) acting on the smiley face.
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The equation below expresses the proportional relationship between an object's kinetic energy, mass, and velocity.
Kinetic energy% x mass x velocity
How did your observations confirm this equation?
Answer: I do not know what your observations were, but objects with a higher mass and objects traveling at a faster velocity have a higher kinetic energy. The reverse is true of course for less KE.
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(a)6an electron is to be accelerated from 3.00 * 106 m>s to 8.00 * 10 m>s. through what potential difference must the electron pass to accomplish this? (b) through what potential differ- ence must the electron pass if it is to be slowed from 8.00 * 106 m>s to a halt?
The work-energy theorem may be able to shed some light on the forces when an object's motion is known but the magnitudes of one or more of the forces acting on it are unknown. The work-energy theorem is applicable to forces that are both constant and variable.
What is the work energy theorem?The work-energy theorem states that the total work done by forces acting on an item is equal to the change in kinetic energy.
This theorem states that the net work performed on a body is equal to the change in the body's kinetic energy. The Work-Energy Theorem describes this. Kf - Ki = W is a representation of it.
(A)
from work energy theorem,
work done = change in kinetic energy
[tex]w = \frac{1}{2} mv^2 - \frac{1}{2} m u^2[/tex]
[tex]ev= \frac{1}{2} mv^2 - \frac{1}{2} m u^2[/tex]
[tex]V = \frac{1}{2e} [mv^2- mu^2][/tex]
[tex]V = \frac{1}{2(1.60\times 10^-19C)} [(9.11\times 10^-31kg) (8.00\times 10^6\frac{m}{s})^2- [(9.11\times 10^-31kg) (3.00\times 10^6\frac{m}{s})^2][/tex]
[tex]=157v[/tex]
The potential difference of electron is 157V.
(B)
[tex]w = \frac{1}{2} mv^2 - \frac{1}{2} m u^2[/tex]
[tex]ev= \frac{1}{2} mv^2 - \frac{1}{2} m u^2[/tex]
[tex]V = \frac{1}{2e} [mv^2- mu^2][/tex]
[tex]V = \frac{1}{2(1.60\times 10^-19C)} 0 - [(9.11\times 10^-31kg) (3.00\times 10^6\frac{m}{s})^2][/tex]
[tex]= 25.6V[/tex]
The potential difference of electron is 25.6V
Therefore, for (a) potential difference of electron is 157V and for (b) potential difference of electron is 25.6V
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the resultant static force acting on a submerged inclined plane surface acts: question 7 options: at the centroid of the submerged body above the centroid of the submerged body below the centroid of the submerged body
When a body is entirely or partially submerged in a liquid, the resultant pressure force acting on the body is known as the buoyant force.
When a surface is immersed in a fluid, the pressure force that results on the body operates in all directions perpendicular to the surface. We refer to this as hydrostatic pressure. The density of the fluid and the depth of the point below the surface of the fluid both directly affect the pressure at a given place in the fluid, which is the same in all directions. The pressure also rises as the depth does buoyant force. Any point in a fluid experiences pressure in all directions, making it a scalar quantity.
The weight of the fluid above the point of interest determines this pressure, which is described as the force applied per unit area. It is referred to be an isotropic quality of fluid when the pressure at a particular place in the fluid is the same in all directions.
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when a microwave receiver is initially placed at w which is equidistant from the slits, a maximum in intensity is observed. the receiver is then moved towards z along a line parallel to the slits. intensity maxima are observed at x and y with one minimum between them. w, x and y are consecutive maxima. explain why intensity maxima are observed at x and y.
The route difference between the waves that microwaves travel on their way to X and Y must equal an integral multiple of the length.
Why do diffraction maxima differ in intensity?
Secondary wavelets from all areas of the slit interfere constructively, creating the central maximum. Wavelets from smaller and smaller portions of the slit produce constructive interference to create secondary maxima as n (order of the spectrum) increases. The intensity lowers as a result.
The route difference between the waves that microwaves travel on their way to X and Y must be an integral multiple of the length. Therefore, the remaining portions of the two waves must have been overlapping or colliding with one another, respectively. resulting in the maxima
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find odd one out
stigma ,anther ,style ,ovary.
Answer:
style
Explanation:
While running, how should you throw a ball with respect to you so that you can catch it yourself? a) Slightly forward b) Slightly backward c) Straight up
C) Straight up
How will you catch the ball ?If the ball is thrown vertically up, only the horizontal component of the runner and the ball will be the same, and in that case only he may catch the ball. To catch the ball, the horizontal component of the force on the ball and the runner should be the same.
The horizontal velocity component (vx) describes the influence of the velocity in displacing the projectile horizontally. The vertical velocity component (vy) describes the influence of the velocity in displacing the projectile vertically.
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whether a truck comes to a stop by crashing into a haystack or a brick wall, the stopping force is
both the same.
greater with the haystack.
greater with the brick wall..
When a truck comes to a stop by crashing into a haystack or a brick wall, the stopping force is greater with the brick wall. Stopping force is determined by the amount of friction a surface provides.
Friction is a force that acts between two objects when they come into contact with each other. It is an important force that affects our everyday life. Friction can be both beneficial and detrimental. It is beneficial in that it allows us to walk, run, drive, and even write without slipping or sliding. It also helps us to stop when we need to. On the other hand, friction can be detrimental when it causes machines to wear down, resulting in energy being wasted. Friction can also cause heat, noise, and wear on the surfaces of the two objects.
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if earth's mass decreased to one-half its original mass with no change in radius, then your weight would
Answer:
Because of symmetry the gravitational field of the earth acts as though all of the mass of the earth were centered at the center of the earth - so g = G M / R^2 and W = m g weight of an individual
If the mass (M) had 1/2 of its value the weight would also be halved.
therm is a unit that is generally used to measure the energy contained in natural gas.
There are 100,000 British Thermal Units in a Therm. Throughout in the country, the measurement, and billing unit for natural gas usage is the therm. Thus, it is true.
What is the use of therm unit in energy measure?Therm gauges how much heat energy is generated by natural gas. As a result, we are able to compute the real energy consumed.
The therm, or Non-SI unit of heat energy, is equivalent to 1,000,000 BTUs and is a non-international standard of measurement. Btu is another way to write British thermal units.
Your cumulative use of natural gas is measured in therms. The British Thermal Unit, or BTU, measures the amount of heat required to increase one pound of water's temperature by one degree Fahrenheit. One therm is equivalent to 100,000 BTUs.
Therefore, it is true that An energy unit is a thermon. It's a term used to characterize natural gas's energy. 100,000 Btu make up one therm. More energy exists in a BTU than a calorie.
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Explain why elements produce their own characteristic colors when they emit photons? Calculate the frequency (Hz) and wavelength (nm) of the emitted photon when an electron drops from the n = 4 to the n = 2 level in a hydrogen atom.
(a) The colors that elements emit when they emit photons are due to the specific energies associated with different electron transitions within the element's atoms.
(b) The energy difference is 0 eV, the photon will not be emitted and there will not be a frequency or wavelength associated with it.
What is the frequency emitted?To calculate the frequency (f) and wavelength (λ) of the emitted photon, we can use the following formula:
f = E/h
where;
E is the energy difference between the two levels and h is Planck's constant.The energy difference can be calculated using the formula:
E = (13.6 eV) / n^2
where;
eV is the electron volt, n is the principle quantum number.Plugging in the values for n = 4 and n = 2, we get:
E = (13.6 eV) / 4^2 - (13.6 eV) / 2^2
= 3.4 - 3.4 eV
= 0.0 eV
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play the video and pause when you need to read the scale. how much does the mass decrease during heating?
Although it may appear like burning destroys matter, the same quantity, or mass, of matter remains after a campfire. It demonstrates that when wood burns, it reacts with oxygen and transforms into not just ashes, but also carbon dioxide and water vapor. The gases float out into the air, leaving just the ashes behind.
Antoine Lavoisier, a French scientist, developed the law of conservation of mass in 1789. According to the rule of conservation of mass, matter cannot be generated or destroyed in a chemical process. As wood burns, for example, the mass of the soot, ashes, and gases matches the original mass of the charcoal and oxygen when it originally reacted. As a result, the product's mass equals the reactant's mass. A reactant is a material generated by the chemical reaction of two or more elements, and a product is the substance formed as a result of a chemical reaction (Video 3.7.1). Matter and its equivalent mass cannot be generated or destroyed, but they may change forms to other things like liquids, gases, and solids.
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2 paged essay on acceleration, speed, time, distance how they’re connected and a sport as an example
In physics, the motion of an object is described by the concepts of acceleration, speed, time, and distance. These ideas are crucial for comprehending and analyzing athletic performance in a sport like track and field.
Define acceleration.
The pace at which an object's velocity changes is known as acceleration. It gauges how rapidly an object alters its direction and speed. Acceleration is essential for sprinters in track and field to get off the starting blocks fast and attain their top speed as soon as feasible. A sprinter with a high rate of acceleration will get off to a faster start and be in a better spot on the track.
Contrarily, speed is the rate at which an object travels a predetermined distance. In track and field, competitors must cross the distance as quickly as possible in events like the 100-meter dash and the 400-meter relay. Time is a crucial element in calculating an object's speed and range. An object's speed directly relates to how long it takes it to travel a certain distance. Timing is essential for athletes to compete against one other and set personal records in track and field.
Distance is a unit of measurement for the separation between two places. Distance is a crucial component in track and field because it allows competitors to cover as much territory as possible in events like the long jump.
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No one in Rohan's immediate family has cancer. What does this MOST likely mean?
OA. He will never get cancer.
OB. His mom does not have cancer-causing genes.
OC.
His dad does not have cancer-causing genes.
D.
He could possibly get cancer.
Answer:
D. He could possibly get cancer.
Explanation:
The correct answer is D. He could possibly get cancer. While having no immediate family members with cancer is a good sign, it does not guarantee that he will never get cancer. It simply means that his parents do not have any known cancer-causing genes.
A skateboarder fell during a jump. She got up after 5 seconds, returns to a velocity of 5 m/s. What is her acceleration
Answer:
Acceleration= Velocity/time
Acceleration=5m/s\5s
Acceleration=1m/s2
you are rescuing a person who has fallen down a well. the rope with which you are lifting the person will withstand a maximum tension of 850 n without breaking. the weight of the person being lifted is 700 n. the magnitude of the largest acceleration with which you raise the person is
Magnitude of the largest acceleration with which you raise the person is calculated as 1.214 m/s².
What is tension?The tension in the rope is directly related to the acceleration of person being lifted according to Newton's second law of motion:
Given, maximum tension the rope can withstand is 850 N, and weight of the person being lifted is 700 N.
As tension = mass x acceleration
Since the mass of the person is constant, we can write this equation:
Acceleration = Tension / mass
Acceleration = 850 N / 700 kg
= 1.214 m/s^2
Therefore, the magnitude of the largest acceleration with which you can raise the person is 1.214 m/s^2.
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How do we compare the displacement of a moving object moving from one point to another?
5.Velvet is a new mom who wants to use some information to help raise her daughter. What advice can you give her on maturation, growth cycles, and critical periods?
The most critical years for a child's growth are from birth to age three. Good nutrition, emotional support, play, and language development are all variables that support development.
What does child development mean by growth and maturation?
The tangible and measurable process of development is growth. One measurable change is your physical height, which increases with time. Growth leads to the development of personality and behavioural traits, which is called maturation.
The phrase "critical period" in ethology refers to a certain period of an organism's early development when it is able to master skills necessary for survival. These factors have an effect on how systems like hearing and vision, social bonding, and language learning develop.
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A pipe 1.00 m long is closed at one end. A guitar is placed near the open end of the tube and the string is plucked. The guitar string is 0.50 meters long and has a mass of 0.0010 kg. The string vibrates in its fundamental mode (1st harmonic) and produces a 1st overtone (3rd harmonic) standing wave in the closed pipe. If the speed of sound is 340 m/s, determine the tension in the guitar string.
Hint: the frequency of the vibrating guitar string is the same as the frequency produced in the closed pipe.
The tension in the guitar string is approximately 165 N.
How to determined the fundamental frequency (1st harmonic) of the closed pipeThe fundamental frequency (1st harmonic) of the closed pipe
can be determined using the formula:
f = v/2L
where
f is the frequencyv is the speed of sound L is the length of the pipeSubstituting the given values, we get:
f = 340 m/s / 2(1.00 m) = 170 Hz
The frequency of the 1st overtone (3rd harmonic) is three times the fundamental frequency, so:
f_overtone = 3f = 3(170 Hz) = 510 Hz
The tension in the guitar string can be determined using the formula:
f = 1/2L√(T/μ)
where T is the tension in the string and μ is the linear mass density (mass per unit length) of the string. The linear mass density can be determined from the given mass and length of the string:
μ = m/L = 0.0010 kg / 0.50 m = 0.0020 kg/m
Substituting the given and calculated values, we get:
510 Hz = 1/2(0.50 m)√(T/0.0020 kg/m)
Simplifying and solving for T, we get:
T = (4π^2)(0.0020 kg/m)(510 Hz)^2(0.50 m)^2 = 165 N
Therefore, the tension in the guitar string is approximately 165 N.
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A wave has a frequency of 30 hz and speed of 60 m/s what is the wavelength of the wave
The definition of frequency, expressed in hertz, is the number of oscillations of a wave per unit of time (Hz). The relationship between frequency and pitch is straightforward. Frequencies between 20 and 20000 Hz are audible to humans.
What is the relation in frequency and wavelength in wave?The number of wave cycles or revolutions per second is known as frequency. The following is the frequency-based formula for period (T): If wavelength and velocity are taken into account for any wave, the Frequency Formula is expressed as. f = v λ
he relationship between these two factors is justified by the fact that the speed at which a wave travels is equal to the product of its frequency and wavelength.
V=fλ
f represent frequency
V= speed
λ = wavelength
by using this formula
λ = v/ f = 2nm
Therefore, 2nm is the wavelength of the wave.
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