determine the wavelength of the line in the hydrogen atom spectrum corresponding to the n = 4 to n = 5 transition.
Answers
We get the value of the wavelength which in this case is found to be 43.88 nm.
The wavelength of the line in the hydrogen atom spectrum corresponding to the n = 4 to n = 5 transition can be determined by using the Rydberg formula which is given by:1/λ=R(1/n1²−1/n2²)
Here, R is the Rydberg constant which is equal to1.097 x 10⁷ m⁻¹
The values of n1 and n2 represent the energy levels of the electron in the initial and final states respectively.
Substituting the values in the above formula we get:1/λ=R(1/4²−1/5²) = 10970000 (1/16-1/25) = 10970000 (0.036-0.04)=10970000 x (-0.004) = -43.88
Therefore, the wavelength of the line in the hydrogen atom spectrum corresponding to the n = 4 to n = 5 transition is 43.88 nm.
The wavelength of the line in the hydrogen atom spectrum corresponding to the n = 4 to n = 5 transition can be calculated using the Rydberg formula, which is given by 1/λ=R(1/n1²−1/n2²).
The Rydberg constant is equal to 1.097 x 10⁷ m⁻¹
By substituting the values of n1 and n2, we can get the value of the wavelength which in this case is found to be 43.88 nm.
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Related Questions
30 points must be a legitimate answer and correct answer or I will report
A wave travels at a constant speed. How does the frequency change if the wavelength is reduced by a factor of 3?
A. The frequency increases by a factor of 9.
B. The frequency increases by a factor of 3.
C. The frequency decreases by a factor of 3.
D. The frequency does not change.
Answers
Answer:
it's C
Explanation:
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in the diagram, the direction of a current and the magnetic field around it are shown. describe what would happen to the magnetic field if you increased the number of turns in the coil and reversed the direction of the current
Answers
Answer:
more turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet
Explanation:
by winding a coil , it concentrates magnetic field of the current in smaller space so more turns of coil mean stonger magnetic field.
explanation for change of direction of current is in pic.
i hope it helps.
More turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet.
What is Current?By winding a coil , it concentrates magnetic field of the current in smaller space so more turns of coil mean stonger magnetic field.
In a full electrical circuit, current is the rate at which electrons move past a certain point. Current = flow, at its most fundamental level.
The international unit for measuring current is an ampere (AM-pir), sometimes known as an amp. It describes how many electrons.
In a circuit, a current of 1 ampere corresponds to the movement of 1 coulomb of electrons, or 6.24 billion billion (6.24 x 1018) electrons, through a single location in a second.
Therefore, More turns in a coil will make stronger magnet field and reversed direction of the current will change the pole of the magnet.
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A speaker produces 1\text{W}1W of acoustical power. If the speaker projects sound uniformly in all directions, at what distance from the speaker will the loudness of the sound be 84.0 dB
Answers
If it projects sound uniformly in all directions, the loudness of the sound produced by the speaker will be 84.0 dB at a distance of approximately 158.5 meters from the speaker.
The loudness of a sound is determined by its intensity level, which is measured in decibels (dB). The intensity level is directly proportional to the logarithm of the power of the sound wave. In this case, the speaker produces 1W of acoustical power, which is equivalent to 0 dB.
To determine the distance at which the loudness of the sound will be 84.0 dB, we need to use the inverse square law, which states that the intensity of sound decreases as the square of the distance from the source.
Let's assume that the speaker projects sound uniformly in all directions. At a distance of 1 meter from the speaker, the intensity level will be:
IL1 = IL0 - 20 log (d1/d0)
IL1 = 0 dB - 20 log (1/1)
IL1 = 0 dB
At a distance of x meters from the speaker, the intensity level will be:
ILx = IL0 - 20 log (dx/d0)
We need to solve for x when ILx = 84.0 dB:
84.0 dB = 0 dB - 20 log (x/1)
4.2 = log (x/1)
x/1 = 10^4.2
x = 158.5 meters
Therefore, the loudness of the sound produced by the speaker will be 84.0 dB at a distance of approximately 158.5 meters from the speaker if it projects sound uniformly in all directions.
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If you catch the ruler 8.3 cm from the lower end, what is your reaction time? Express your answer using two significant figures.
Answers
Answer:
Below
Explanation:
The time it take the ruler to fall .083 m is given by
d = 1/2 a t^2 d = .083 m a = 9.81 m/s^2
t = .13 s
because of the release of the neurotransmitter dopamine, people who express that they are madly in love are likely to report that they feel
Answers
people who express being madly in love are likely to report feeling intense emotions such as euphoria, happiness, excitement, and a strong desire for closeness. However, it's essential to recognize that the experience of love is complex and involves multiple neurochemical processes.
Because of the release of the neurotransmitter dopamine, people who express that they are madly in love are likely to report feeling a range of intense emotions. Dopamine is associated with feelings of pleasure, reward, and motivation, and its release in the brain can contribute to the euphoric sensations commonly experienced in the early stages of romantic love.
Individuals who are madly in love often describe feeling a sense of exhilaration, happiness, and an overall heightened state of well-being. They may experience increased energy levels, a sense of excitement and anticipation, and a general feeling of being "on top of the world." Additionally, the release of dopamine can enhance feelings of attraction and attachment, leading to an intense desire to be close to the person they love.
However, it is important to note that while dopamine plays a significant role in the initial stages of romantic love, long-term love and attachment involve other neurotransmitters and hormones, such as oxytocin and vasopressin. These chemicals contribute to feelings of trust, bonding, and long-term commitment.
In conclusion, people who express being madly in love are likely to report feeling intense emotions such as euphoria, happiness, excitement, and a strong desire for closeness. However, it's essential to recognize that the experience of love is complex and involves multiple neurochemical processes.
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The gravitational force between two asteroids is 6. 2 × 108 N. Asteroid Y has three times the mass of asteroid Z. If the distance between the asteroids is 2100 kilometers, what is the mass of asteroid Y? 3. 7 × 1015 kg 1. 1 × 1016 kg 1. 4 × 1031 kg 4. 1 × 1031 kg.
Answers
Answer:Let m = mass of asteroid y.Because asteroid y has three times the mass of asteroid z, the mass of asteroid z is m/3.Given:F = 6.2x10⁸ Nd = 2100 km = 2.1x10⁶ mNote thatG = 6.67408x10⁻¹¹ m³/(kg-s²)The gravitational force between the asteroids isF = (G*m*(m/3))/d² = (Gm²)/(3d²)orm² = (3Fd²)/G = [(3*(6.2x10⁸ N)*(2.1x10⁶ m)²]/(6.67408x10⁻¹¹ m³/(kg-s²)) = 1.229x10³² kg²m = 1.1086x10¹⁶ kg = 1.1x10¹⁶ kg (approx)Answer: 1.1x10¹⁶ kg
Explanation:
Which theory explains that cussing in front of your grandparents or hugging a stranger would be okay to you based on social context?
Group of answer choices
Social cognitive theory
social trait theory
Social science theory
social concrete theory
Answers
A boat can travel 15 m/s when there is no ocean current. If the ocean current has a velocity of 3 m/s that is going directly East, which way should the boat steer to move directly North if the boat is moving at 15 m/s?
Answers
15*15=225(m) boat speed
John sees Linda Running towards him at 11 m/s. while running, Linda throws a ball at 5m/s. what is the speed of the ball as observed by John?
Answers
Solid to gas and gas to solid on the basis of kinetic model.
Answers
Explanation:
The kinetic molecular theory of matter states that: ... The average amount of empty space between molecules gets progressively larger as a sample of matter moves from the solid to the liquid and gas phases. There are attractive forces between atoms/molecules, and these become stronger as the particles move closer together.
Is Soil compound or element or mixture
Answers
Answer: mixture
Explanation:
Answer:
soil is a mixture of minerals, dead and living organisms (organic materials), air, and water. These four ingredients react with one another in amazing ways, making soil one of our planet’s most dynamic and important natural resources.
Another definition of soil
The surface mineral and/or organic layer of the earth that has experienced some degree of physical, biological and chemical weathering.
In summary, soil is a mixture....
26. A weight of 20N stretches a spring by 0.5cm. Calculate the
extension when the applied weight is 60N.
A. 0.25cm
B.1.5cm C. 2.0cm D. 4.0cm
Answers
Answer:
26 a weight of 2on stretcges
Which of the following statements about Australian football is TRUE?
A.
The players tend to wear a large amount of padding.
B.
Goals are scored by kicking the ball through goalposts.
C.
Each team has a number of set plays for both offense and defense.
D.
The constant movement of the ball is similar to baseball.
Answers
Answer:
B.
Goals are scored by kicking the ball through goalposts.
Explanation:
What will happen in the next moment for the girl on the swing?
1.Fill in wether quantities will increase, decrease, or stay the same.
2. Support your answer in the table below
Answers
Answer:
Increase, same, same
Explanation:
Each tyre of a car has an area of 100 cm2 in contact with the ground. The car has a mass of 1600 kg. The weight of the car is equally distributed amongst the four tyres.The gravitational field strength g is 10 N / kg.What is the pressure exerted on the ground ?
A. 4.0 N/cm2
B. 16 N/cm2
C. 40 N/cm2
D. 160 N/cm2
Answers
The pressure exerted on the ground is 40 N/cm². Hence, option (C) is correct.
What is pressure?It is the ratio between the force being applied and the surface area being applied to. The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure.
SI unit of pressure is Pascal or Newton/meter².
Given parameters:
Mass of the car: m = 1600 kg.
Gravitational field strength: g = 10 N/kg
Area of each tyre of car: a = 100 cm²
Hence, total force applied by the car = mg = 1600 × 10 Newton = 16000 Newton.
As the weight of the car is equally distributed amongst the four tyres; force applied on each tyre = 16000 Newton/4 = 4000 Newton.
Hence, the pressure exerted on the ground = force/area
= 4000/100 N/cm²
= 40 N/cm²
hence, option (C) is correct.
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the maximum displacement of a particle by a wave is called
Answers
What is an inertial frame of reference? does a perfect inertial frame of reference exist, and if it does, give me an example?
Answers
Answer:
Within the realm of Newtonian mechanics, an internal frame of reference or internal reference frame, is one in which newton's law of motions is valid
How is gravity "best" described?
options:
a description of mass
a molecular pull
a kind of acceleration
a fundamental force
Answers
Answer:
a fundamental force
Explanation:
Gravity is the only fundamental force that physicists can currently describe without using force-carrying particles.
Answer:
Gravity is best described as a fundamental force.
Explanation:
Gravity is one of the 4 fundamental forces(3 of the forces out of 6).
The description of mass is independent to Gravity. Since an objects mass determines the strength of the pull of Gravity. But it is not Gravity itself.
Molecular pull is more of a density determination. For example the pull between the atomic particles of a solid is stronger than those of a gas.
Thrust is a kind of acceleration. It is the push and resist to the drag force.
Q1: We drop this 0.1 kg apple 1 m. What speed does it hit the ground
with?
Looking for: Potential energy
Please explain it an easy way
Answers
m=mass (kg)
g= acceleration due to gravity (which is 9.8 on earth)
h= height in metres above ground
For this question
m=0.1
g=9.8
h=1
So Ep=0.1(9.8)(1)
Ep=0.98 Joules
When it is dropped all of this potential energy is converted into kinetic energy which can be measured using formula
Ek=1/2m(v^2) (v=final velocity)
Since all potential energy in this q is converted to kinetic we know Ek=0.98Joules and our mass is the same (0.1kg)
So when we sub everything in we get
0.98=1/2(0.1)(v^2)
0.98=0.05(v^2)||divide both side by 0.05
19.6=v^2 ||square root both sides
v=4.4 m/s
What would be 1/2 times 800?
Answers
Answer:
The answer is 400
Explanation:
1. What happens to an atom when it gains electrons? *
Answers
Answer: An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion
Answer:
when an atom gains electrons, it gains a negative charge
Explanation:
hope I helped you
A vector is 14.4 m long and points in a 133 degree direction . Find the y - component of the vector .
Answers
Answer:
I put X and Y components so make sure you pay attention to which is correct for you.
Explanation:
X = -9.82
Y = 10.5
quantization of electron energy states in an atom is better understood in terms of the electron's
Answers
Quantization of electron energy states in an atom is a fundamental concept in atomic physics and quantum mechanics. It refers to the discrete and distinct energy levels that an electron can occupy in an atom.
This quantization is better understood in terms of the electron's wave-like nature. The electron behaves like a wave, and its energy is related to the wavelength and frequency of the wave.
The wave-like behavior of the electron was first proposed by Louis de Broglie in 1924, and it was later confirmed by experiments. According to de Broglie's theory, electrons have wave-particle duality, meaning that they can exhibit both wave-like and particle-like behavior. When an electron is confined to an atom, its wave-like behavior leads to the quantization of energy levels.
The quantization of energy levels in an atom arises from the fact that electrons can only occupy specific orbitals around the nucleus. These orbitals have specific energies associated with them, and the electron can only exist in one of these energy levels. When an electron absorbs or emits energy, it must do so in discrete packets or quanta, which correspond to the energy difference between the energy levels.
In summary, the quantization of electron energy states in an atom is a consequence of the wave-like nature of the electron. It arises from the fact that electrons can only occupy specific orbitals around the nucleus, and their energies are quantized in these orbitals. This concept is fundamental to our understanding of atomic structure and has important implications for a wide range of fields, including chemistry, materials science, and electronics.
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why doesnt food have energy
Answers
Oh it has ! It has ! That's exactly where you get all the energy you use to think, breathe, and move.
a projectile of mass 1.3 kg is launched horizontally from an initial height 2.9 m with an initial velocity 8.5 m/s. this velocity in the x direction is preserved when you ignore air resistance. the projectile still accelerates in the vertical y direction toward the ground, but this is exactly the energy lost from potential energy. energy is conserved as long as you use the total mechanical energy equation. what is the total final kinetic energy (joules) as the projectile just reaches the ground? give your numerical answer to one decimal place precision. assume g
Answers
The total final kinetic energy of the projectile as it reaches the ground is 49.5 J (to one decimal place of precision).
Applying conservation of energyTo solve this problem, we need to use the conservation of energy principle. The initial total mechanical energy (potential plus kinetic) of the projectile is converted into its final total mechanical energy when it reaches the ground, assuming no energy is lost due to air resistance.
The initial potential energy is given by:
Ep = mgh = (1.3 kg)(9.81 m/s^2)(2.9 m) = 36.01 J
The initial kinetic energy in the x-direction is given by:
Kx = 0.5mvx^2 = 0.5(1.3 kg)(8.5 m/s)^2 = 49.47 J
Since there is no initial kinetic energy in the y-direction, the total initial mechanical energy is the sum of the initial potential and kinetic energies in the x-direction:
Ei = Ep + Kx = 36.01 J + 49.47 J = 85.48 J
At the final moment, the projectile reaches the ground, so its final potential energy is zero. Therefore, the final total mechanical energy is equal to the final kinetic energy:
Ef = Kf
We know that the projectile is subject to constant acceleration due to gravity (9.81 m/s^2) in the y-direction, and we can use the kinematic equation:
y = yo + voyt + 0.5a*t^2
where y is the final position (0 m), yo is the initial position (2.9 m), voy is the initial velocity in the y-direction (0 m/s), a is the acceleration due to gravity (-9.81 m/s^2), and t is the time it takes for the projectile to reach the ground.
Rearranging this equation to solve for t, we get:
t = sqrt(2(y - yo)/a) = sqrt(2(0 - 2.9)/(-9.81)) = 0.762 s
Now we can use the final velocity in the x-direction and the time of flight to calculate the final kinetic energy in the x-direction:
Kxf = 0.5mvx^2 = 0.5(1.3 kg)(8.5 m/s)^2 = 49.47 J
Therefore, the final total mechanical energy and final kinetic energy are:
Ef = Kf = Kxf = 49.47 J
Therefore, the total final kinetic energy of the projectile as it reaches the ground is 49.5 J (to one decimal place of precision).
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To lift a transformer straight up from the floor to a truck bed located 1.30 m above the floor requires 180 J of work. What is the weight of the transformer?
Answers
The weight of the transformer is 138.46 N.
How to calculate weight?Weight can be calculated by dividing workdone by height
To calculate the weight of the transformer, we use the formula below.
Formula:
W = E/h................... Equation 1Where:
W = Weight of the transformerE = Work done to lift the transformer from the floor = 180 Jh = Height at which the transformer was lifted = 1.3 mSubstitute these values into equation 1
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what are the example of ultraviolet rays
Answers
1. Sunlight: The sun is the primary natural source of UV rays. UV radiation from the sun is responsible for causing sunburn, skin aging, and an increased risk of skin cancer.
2. Tanning beds: Tanning beds and sun lamps emit UVA and UVB radiation, which can also cause skin damage and increase the risk of skin cancer.
3. Fluorescent lights: Some types of fluorescent lights emit small amounts of UV radiation.
4. Welding torches: Welding torches emit high levels of UV radiation, which can cause eye damage and skin burns if protective gear is not worn.
5. Germicidal lamps: These lamps are used to disinfect surfaces and air, but can also emit UVC radiation, which is harmful to living organisms and can cause skin and eye damage.
The icy planetesimals that remain in the solar system today are called
a. asteroids.
b. moons.
c. meteorites.
d. comet nuclei.
Answers
Comet nuclei are the ice planetesimals that are still present in the solar system.
option D
The solid, ice entities in the center of comets are known as comet nuclei, cometary nuclei, or comet cores. Water ice, carbon dioxide, methane, ammonia, and other volatile substances are all combined to form these tiny celestial bodies, which are normally a few kilometers large. The material that gave rise to the planets, asteroids, and Kuiper Belt objects is thought to have been the source of the cometary nuclei, which are considered to represent the remains of the early Solar System.
The frozen surface of a comet begins to evaporate as its nucleus gets closer to the Sun, releasing gas and dust into space and creating a luminous coma and long, flowing tail. Insights into the make-up and development of the early Solar System, a well s the mechanisms that influence comet evolution through time, can be gained from research on cometary nuclei.
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For a skateboard with a negative acceleration, which of the following statements is always true?
1. The initial velocity of the skateboard will be greater than it’s final velocity.
2. The skateboard will have a negative displacement.
3. The final velocity of the skateboard will be positive.
4. The final velocity of the skateboard will be negative
5. The skateboard is losing speed
Answers
With a negative acceleration, the skateboard's beginning velocity will be higher than its end velocity.
The correcty answer is 1
How do you calculate beginning velocity in the absence of time?Based on the assumption that the object's energy is conserved, its velocity equals the square root of twice square product of the its acceleration or the distance it travels. This relationship also depends on the object's initial velocity.
What are starting and final velocities?When gravity first exerts force on an object, its initial velocity indicates how quickly it moves. The final velocity, on the other hand, is a vector quantity that determines the rate and direction of the a moving body when it has reached its maximum velocity.
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1.
Which is not a characteristic of a compound?
•has different properties from its component elements
•can be represented by a chernical formula
•different samples have different properties
•a pure substance made of two or more elements
Answers
Answer:
different sample have different properties is not a characteristics of a compound ,
Explanation:
because compound will always same properties no matter how quantity is