3) A photon is emitted as the electron in a hydrogen
atom drops from the n = 5 energy level directly to
the n = 3 energy level. What is the energy of the
emitted photon?
(1) 0.85 eV
(2) 0.97 eV
(3) 1.51 eV
(4) 2.05 eV

Answers

Answer 1

From the information provided and the calculations, the energy of the drop is 1.51 eV

What is the Rydberg formula?

The Rydberg formula is used to obtain the energy of a photon or the wavelength of a photon.

Thus;

1/λ = 1.097 * 10^7 (1/3^2 - 1/5^2)

1/λ = 1.097 * 10^7(0.11 - 0.04)

λ = 1.3 * 10^-6 m

Since;

E = hc/λ

E = 6.6 * 10^-34 * 3 * 10^8/1.3 * 10^-6

E = 1.51 * 10^-19 J or 1.51 eV

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Answer 2

Answer:

0.97eV

Explanation:

The energy emitted during n=5 is 0.54 eV

The energy emitted during n=3 is 1.51 eV
(This information is on the Physics Reference Table 2006 edition)

We find the change in the energy level which is:  

1.51eV-0.54eV = 0.97eV

Therefore the energy emitted by the photon is 0.97eV.


Related Questions

A simulation shows whether changing various weather conditions increases the likelihood that a hurricane will form. which type of model is this?

Answers

The type of model used is most likely to be conceptual because it shows the relationship between cause and effect.

What is a simulation?

A simulation can be defined as a model which is designed and developed to imitate the operation of an existing (proposed) real-life system or natural phenomenon, so as to enhance the ability to study, analyze, and make informed decisions about it.

Generally, there are different types of simulation and these include the following:

Mathematical model.Conceptual model.Computer-generated model.Physical model.

In this scenario, the simulation which shows whether changing various weather conditions increases the likelihood that a hurricane will form is missing.

Thus, I would infer that the type of model used is most likely to be conceptual because it shows the relationship between cause and effect.

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Why is it not possible to achieve a higher resolution in the light microscope?.

Answers

Higher resolution cannot be achieved with a light microscope because wavelength of light is larger that wavelength of electrons.

What is light microscope?

Light microscope is defined as the type of microscope that makes use of visible light to magnify objects into images that can be observed.

The wavelength of light is larger than that of the electrons, therefore, higher resolution cannot be achieved with a light microscope.

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Can you have curly hair even though your hair is short and soft? (Women)

Answers

It depends on the genetics. Having curly hair doesn’t have anything to do with hair length or texture.

The magnitude of the angular momentum of the two-satellite system is best represented by

Answers

The magnitude of the angular momentum of the two-satellite system is best represented as, L=m₁v₁r₁-m₂v₂r₂.

What is angular momentum.?

The rotational analog of linear momentum is angular momentum also known as moment of momentum or rotational momentum.

It is significant in physics because it is a conserved quantity. the total angular momentum of a closed system remains constant. Both the direction and magnitude of angular momentum are conserved.

The magnitude of the angular momentum of the two-satellite system is best represented as;

L=∑mvr

L=m₁v₁r₁-m₂v₂r₂

Hence, the magnitude of the angular momentum of the two-satellite system is best represented as, L=m₁v₁r₁-m₂v₂r₂.

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Suppose you look at the huge clock on the Big Ben Tower in London and it reads 12 noon. If you could travel away from the clock at the speed of light and view it with a telescope, it would

Answers

Answer:

Remain at 12 noon - you would be traveling with the wavefront that reads 12 noon:

Also     Δt' = Δt / (1 - β^2)^1/2  

Where Δt is the proper time interval (at the clock)

Since the denominator is zero the measured time interval is also infinite and the time between "ticks" is infinite

Question 25 (Mandatory) (1 point)
◄) Listen
Explain the value of being able to disagree respectfully with another person.
A

Answers

It's very important for an individual to possess the ability to disagree respectfully with another person because strengthens one's relationships.

What is a conflict?

A conflict is any form of disagreement, misunderstanding, or struggle that arises between two (2) or more parties, especially due to any of the following reasons;

Differing opinionsIncompatibilitiesA difficult challengeSuperiority

However, it's very important for an individual to possess the ability to disagree respectfully with another person because of the following:

Working through conflicts peacefully.It strengthens one's relationships and understanding of others.It mitigates the chances of physical confrontations and assaults.

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When two surfaces interact, some mechanical energy leaves the system as thermal energy
due to
a) surrounding heat
b) water
c) friction
d) fusion

Answers

When two surfaces interact, some mechanical energy leaves the system as thermal energy due to Friction.

A manufacturer supplies plastic cups that are placed under the legs of the chair

Answers

A manufacturer supplies plastic cups that are placed under the legs of the chair. The manufacturer's claim is that there will be no marks of chair due to pushing or pulling on the floor.

Who is a manufacturer?

A manufacturer is a person who converts his idea of developing and constructing any item using some set of machines.

A manufacturer supplies plastic cups that are placed under the legs of the chair.

When there is a relative motion between two objects, friction force causes the opposition to this motion. Between chair and floor, there will be high magnitude of force. But if we insert plastic cups in the legs of chair, then the friction between cup and floor will be less. This keeps the floor protected form any scratches.

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In which stage of life will the sun undergo the most change?.

Answers

Between the two asymptotic gigantic branches, the Sun changes the greatest in size, brightness, and temperature.

The diagram shows an incomplete scale drawing to find the resultant of two 10N forces acting at a point in the direction shown

Answers

The resultant of the two 10N forces acting at a point in the given direction is the single force which will have the same effect as all the forces acting at that point.

What is the resultant of forces?

The resultant of two or more forces is that single force which will have the same effect as all the forces acting at that point in a given direction.

Since forces are vector quantities, the resultant force is obtained by vector addition.

The direction of the forces are also obtained.

Therefore, the resultant of the two 10N forces acting at a point in the given direction is the single force which will have the same effect as all the forces acting at that point.

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What is the direction of a current that experiences the magnetic force shown above
east
south
north
west

Answers

Answer: Up

Explanation:

Which two changes would decrease the gravitational force between two objects?
A. Increase the distance between the objects B. Increase the mass of both objects
C. Decrease the mass of one of the objects
D. Increase the mass of one of the objects
E. Decrease the distance between the objects

Answers

The gravitational force will decrease when we increase the distance between the objects and decrease the mass of both objects.

What are the factors affecting gravitational force?

The factors affecting gravitational force are the masses of the objects and the distance separating the objects.

The gravitational force increases with increase in mass and decreases with increase in distance of separation and vice versa.

Therefore, the gravitational force will decrease when we increase the distance between the objects and decrease the mass of both objects.

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During a certain chemical reaction, energy is transferred from the reaction system to its surroundings. Which statement is true in this situation? OA. The particles differ in potential energy instead of kinetic energy. B. The particles in the reaction system have more kinetic energy. C. The particles in the surroundings have more kinetic energy. OD. The kinetic energy of the particles in the system and its surroundings are the same.​

Answers

The particles in the reaction system have more kinetic energy than the surroundings.

What is exothermic reaction?

Exothermic reaction is a type of reaction in which energy is lost to the environment.

Internal energy (E) = kinetic energy (K.E) + potential energy (P.E)

Change in internal energy (ΔE) = K.E (particles) - K.E (surroundings)

Since energy is lost to the environment, we can conclude that the particles in the reaction system have more kinetic energy than the surroundings.

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#1 explain why there is no such thing as a quick and easy way to lose weight.

#2 why can’t you not always trust “before and after” photos?

#3 what are three things you should do before you buy exercise equipment?

#4 name a exercise equipment, how it is supposed to work and why you are skeptical about it?

Answers

Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process.

What is exercise?

Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process. There is no quick way to loose weight because the calories were added on gradually and must also be lost gradually.

Before and after photos does not show the loss in calories. This can only be determined by measurement.

Before you buy exercise equipment;

Ensure that the equipment meets your unique needsEnsure that you can afford itEnsure that you have enough space to contain the equipment

An example of an exercise equipment is a stationary bicycle. It works when you sit or stand on it and cycle repeatedly though it doesn't move. I am skeptical about it because it may not help you burn a lot of calories except you use it for long periods of time.

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Diffraction gratings with 10,000 lines per centimeter are readily available. Suppose you have one, and you send a beam of white light through it to a screen 2.00 m away. Find the angles for the first-order diffraction of the shortest and longest wavelengths of visible light (380 and 760 nm).

Answers

The angles for the first-order diffraction of the shortest and longest wavelengths of visible light are 22.33 ⁰ and 49.46 ⁰ respectively.

Angle for the first order diffraction

The angle for the first order diffraction is calculated as follows;

dsinθ = mλ

sinθ = mλ/d

For shortest wavelength (λ = 380 nm)

d = 1/10,000 lines/cm

d = 1 x 10⁻⁴ cm x 10⁻² m/cm = 1 x 10⁻⁶ m/lines

sinθ = (1 x 380 x 10⁻⁹)/(1 x 10⁻⁶)

sinθ = 0.38

θ = sin⁻¹(0.38)

θ = 22.33 ⁰

For longest wavelength (λ = 760 nm)

sinθ = (1 x 760 x 10⁻⁹)/(1 x 10⁻⁶)

sinθ = 0.76

θ = sin⁻¹(0.76)

θ = 49.46 ⁰

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a waddling armadillo of mass 500kg moves at 5 m/s. how much kinetic energy does it have?

Answers

Answer:

K=6.250 J

Explanation:

m=500kg

v=m/s

Kinetic energy= ½mv²=½(500×25) J= 6.250 J

What is the direction of a vector that has the following components: x = -44 m y = -59 m

Answers

The direction of a vector that has the following components is 233°.

What is direction of a vector?

The direction of a vector is where its endpoint points. However, when at least one of the characteristics mentioned above is different, we say that the vectors are different.

In this case, this calculus will be:

[tex]tan\theta= \frac{59}{44} \\\theta= tan^{-1}(\frac{59}{44})\\ \theta= 233\°[/tex]

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The vector with components x = -44 m and y = -59 m has a direction of approximately 52.16 degrees counterclockwise from the positive x-axis.

The direction of a vector with components x = -44 m and y = -59 m can be determined using trigonometry.  In this case, we have:

x-component (x) = -44 m

y-component (y) = -59 m

We can use the inverse tangent function to find the angle.

The direction angle (θ) can be calculated as:

θ = arctan(y / x)

θ = arctan((-59 m) / (-44 m))

Calculating this expression:

θ ≈ arctan(1.341)

To find the actual angle, we can use a calculator or table to determine the inverse tangent of 1.341.

θ ≈ 52.16 degrees

Therefore, the direction of the vector is approximately 52.16 degrees in the counterclockwise direction from the positive x-axis.

The vector with components x = -44 m and y = -59 m has a direction of approximately 52.16 degrees counterclockwise from the positive x-axis.

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A screw having 50% efficiency is driven by a rod and 25 cm. The pitch of the screw is 1/10cm Calculate velocity ratio and mechanical advantage of the screw. ​

Answers

(a) The velocity ratio of the screw is 1570.8.

(b) The mechanical advantage of the screw is 785.39.

Velocity ratio of the screw

The velocity ratio of the screw is calculated as follows;

V.R = 2πr/P

where;

P is the pitch = 1/10 cm = 0.1 cm = 0.001 mr is radius = 25 cm = 0.25 m

V.R = (2π x 0.25)/(0.001)

V.R = 1570.8

Mechanical advantage of the screw

E = MA/VR x 100%

0.5 = MA/1570.8

MA = 785.39

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After three half-lives have elapsed, the amount of an 8.0 g sample of a radionuclide that
(hint: pizza slices)
a. remains undecayed is 1.0 g
b. has decayed is 7.09
c. remains undecayed is one-third the original amount
d. more than one correct response
e. no correct responsel

Answers

After three half-lives have elapsed, the amount of an 8.0 g sample of a radionuclide that remains undecayed is 1.0 g.

What is Half-Life?

Half-Life refers to the time it takes for half the amount of a substance to disappear or change.

The nucleus of the atoms of radioactive elements disintegrate to half their starting amounts after every Half-Life.

After three half-lives one-eight of the original atoms remain.

Therefore, after three half-lives have elapsed, the amount of an 8.0 g sample of a radionuclide that remains undecayed is 1.0 g.

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i need help with this!!​

Answers

Answer:

183

Explanation:

Ohm's Law states that Resistance = Voltage / Current, so:

220/1.2 = 183.333

Use your knowledge of the Law of Conservation of Mechanical Energy to evaluate the
following scenarios about a frictionless roller coaster if the coaster starts from rest at the
top of a hill and then rolls down the hill.
A. Where is KE-PE?
B. Where is KE=0?
C. Where is PE=0?

Answers

the answer is C. where is PE= 0?

Three cars, car x, car y, and car z, begin accelerating from rest, at the same time. car x is more massive than car y, which is more massive than car z. the net force exerted on each car is identical. after 10 seconds, which car has the most amount of momentum?

Answers

When the net force exerted on each car is identical. after 10 seconds, the amount of momentum is same for all cars.

What is impulse?

The change in momentum is equal to the product of impact force applied while colliding and time for that impact.

F. t = m (Vf -Vi)

where, Vf is the final velocity and Vi is the initial velocity.

For car X, Fx x t = Mx Vx

For car Y, Fy x t = My Vy

For car Z, Fz x t = Mz Vz

The force applied is same for all and the the time is also same equal to 10 seconds. The impulse is same for all the cars.

Thus, the three cars have same momentum.

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A source charge of 3 µc generates an electric field of 2.86 × 105 n/c at the location of a test charge. what is the distance, to the nearest hundredth, of the test charge from the source charge?

Answers

Hi there!

Recall the equation for the electric field produced by a point charge:

[tex]E = \frac{kQ}{r^2}[/tex]

E = Electric field (2.86 × 10⁵ N/C)
k = Coulomb's Constant (8.99 × 10⁹ Nm²/C²)

Q = Charge (3 × 10⁻⁶ C)
r = distance from center of charge (? m)

Rearrange the equation to solve for 'r'.

[tex]r^2 = \frac{kQ}{E}\\\\r = \sqrt\frac{kQ}{E}}}\\\\r = \sqrt{\frac{(8.99\times10^9)(3\times10^6)}{(2.86\times 10^5)}} = \boxed{0.307 m}[/tex]

Answer:

0.307

Explanation:

edge22

A baseball is thrown horizontally at 55m/s. The ball slows down at a rate of -10 m/s2. How long is the ball in the air before coming to rest?

Answers

The time of motion of the ball before coming to rest is  determined as 5.5 s.

Time of motion of the ball

The time of motion of the ball before coming to rest is calculated as follows;

v = u + at

when the ball comes to rest, v = 0

0 = u + at

0 = 55 + (-10)t

0 = 55 - 10t

10t = 55

t = 5.5s

Thus, the time of motion of the ball before coming to rest is 5.5 s.

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Sound waves move the most quickly through which materiel?

A. Water

B. Iron

C. Milk

D. Air

Answers

Sound moves the quickest through air

A student investigates the efficiency of a scale model of an electricity generating wind turbine using the equipment in figure 1.
the student changed the number of sales on the turbine and measures the power output from the turbine's generator. the air blower is supplied with 533w and has efficiency of 0.62.
when using two sails, the efficiency of turbine was 13%. calculate the power generated.

Answers

Based on the efficiency of the airblower of 62%, power generated by the airblower is 330.5 W.

What is efficiency of a machine?

Efficiency of a machine is a ratio of the work output and the work input of a machine.

Efficiency = work output/work input × 100%

The power generated by the airblower = ?

Power input to th air blower = 533 W

Efficiency = 0.62 or 62 %

Power generated by the airblower = Efficiency × work input/100

Power generated by the airblower = 62 × 533/100 = 330.5 W

Therefore, the power generated by the airblower is 330.5 W.

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For an object on a flat surface, the force of gravity is 10 newtons downward and the normal force is 10 newtons upward. The applied force is 15 newtons toward the right and the frictional force is 12 newtons toward the left. What is the magnitude and direction of the net force?

3 newtons toward the left
3 newtons upward
3 newtons downward
3 newtons toward the right

Answers

3 Newtons toward the right because Newton’s second law:
F = ma
15N - 12N = ma
3N = ma
(With the right being the positive direction and the left the negative direction)

.89m/s A vehicle that starts to move from the rest gets an acceleration of 5m/s² within 2 seconds. Calculate the velocity and distance covered by the vehicle within the given time. [Ans: 10m/s, 10m]​

Answers

Explanation:

s = ?           u = 0m/s        v = ?         a = 5m/s²        t = 2s

v = u + at                  

  = 0 + (5 x 2)              

  = 10 m/s                    

s = ut + 1/2 at²

= (0)(2) +  x    [tex]\frac{1}{2}[/tex]  x 5 x 2²

= 10 m

Hope this helps!

A proton in a high-energy accelerator is given a kinetic energy of 50.0 GeV. Determine (a) the momentum and (b) the speed of the proton.

Answers

(a) The momentum of the proton is determined as 5.17 x 10⁻¹⁸ kgm/s.

(b) The speed of the proton is determined as  3.1 x 10⁹ m/s.

Momentum of the proton

The momentum of the proton is calculated as follows;

K.E = ¹/₂mv²

where;

m is mass of proton = 1.67 x 10⁻²⁷ kgv is speed of the proton = ?Speed of the proton

v² = 2K.E/m

v² = (2 x 50 x 10⁹ x 1.602 x 10⁻¹⁹ J)/(1.67 x 10⁻²⁷)

v² = 9.6 x 10¹⁸

v = 3.1 x 10⁹ m/s

Momentum of the proton

P = mv = (1.67 x10⁻²⁷ x 3.1 x 10⁹) = 5.17 x 10⁻¹⁸ kgm/s

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We have a really confusing question and I would appreciate the help
Q. consider how much each type of energy transfer plays a role in heat loss/insulating a building and why?

Answers

Thermal insulation reduces unwanted heat loss and also reduces unwanted heat gain.

What is insulation?

Insulation creates a barrier between the hot and the cold object by reducing heat transfer by either reflecting light radiation.

Insulating materials are bad conductors of electricity and heat. So, insulating reduces the heat loss via conduction.

Thermal energy is prevented to increase the temperature of building in summers and decrease in winters. The thermal energy transfer plays vital role in insulating a building.

Thus Thermal insulation reduces unwanted heat loss and also reduces unwanted heat gain.

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Other Questions
An example of people working for a social cause is when a:A.family complains to a restaurant manager that the food and service were poorB.group stands on the corner with signs urging people to spray or neuter their petsC.government decides that a certain newspaper company must be shut down.D.student writes in his journal about how much he enjoyed visiting a national park When an interviewer asks "tell me about yourself", you should tell them about your childhood past. please select the best answer from the choices provided t f Read the sentence.Matelita found her favorite hat behind the living room couch, which excited her greatly.What accurately describes the underlined portion of the sentence?adverbial clauseadjectival clauseappositive phraseprepositional phrase please help meeeeeeeeeeeeeeeeee he work of a student to solve the equation 4(2x 4) = 8 + 2x + 8 is shown below: Step 1: 4(2x 4) = 8 + 2x + 8 Step 2: 6x 8 = 16 + 2x Step 3: 6x 2x = 16 + 8 Step 4: 4x = 24 Step 5: x = 6 In which step did the student first make an error and what is the correct step? Step 2; 8x 4 = 2(6 + x + 6) Step 2; 8x 16 = 16 + 2x Step 3; 6x 2x = 16 8 Step 3; 6x + 2x = 16 + 8 Find two numbers such that their product is four and the sum of their squares is seventeen. If f(x)=5x-4, what is the value of f(3)? The following examples are defined as what kind of property: canals, ponds, machinery, and buildings In the quote below, Mao is referring to which economic program?"Wage a bitter struggle for three years and transform the look of a greater part of the country The industrial output of local industries should exceed local agricultural output in five to ten years."-----Mao Zedong, 1958Question 34 options:The Cultural RevolutionThe Great Leap ForwardThe Five-Year PlanThe Restoration Consider the dissociation of srso4, which has a ksp of 3.2 x 10-7. what do the three rows of (i,c,e) stand for in the table? how can the table be used to find equilibrium constants for this example? Rose bought a bag of potatoes for $6.00 and some granola bars for $5.25 per package. Her total bill was $74.25. How many packages of granola bars did she buy? Enter your answer in the box. 9. What part of the body covers the windpipe when you swallow?O tongueO epiglottisO bronchiO diaphragm what is the center of the circle given by the equation (x-2)2+(y+4)2=6 This figure is a square, with side lengths as shown.415 mmWhat are the perimeter and the area of the square?8020040085 165325The perimeter of the square is,The area of the square is_millimeters.square millimeters 1)Substance A melts at 2300 c, and it doesnt conduct electricity even when molten and doesn't dissolve in water. What is the structure and bonding of this? hooked on our smartphones mastery test how to find the area of a trapezium Which phrase describes a feature of a Mercator projection? genetic drift simulation:Why did you have to "restock" your bag between generations? How does this relate to genotypes and inheritance? Triangle ABC has perimeter 22 cm.AB = 8 CMBC = 5cmBy calculation, deduce whether triangle ABC is a right-angled triangle.