the shortest wavelength of the hydrogen lyman series is 91.13 nm. find the three longest wavelengths in this series

Answers

Answer 1

As an electron moves from the lowest energy level of n = 1 to n = 2 (where n is the primary quantum number), the Lyman series is a hydrogen spectral series of transitions and resulting ultraviolet emission lines of the hydrogen atom.

Lyman-alpha from n = 2 to n = 1;

Lyman-beta from n = 3 to 1; Lyman-gamma from n = 4 to 1; and so on.

When the electron switches from n=2 to n=1, it enters the Lyman series. Thus, the Rydberg formula becomes applicable to the Lyman series.

Where is the wavelength and R is the hydrogen Rydberg constant (0.010972 nm), 1/ = R(1 - 1/n2)

The Lyman series' three longest wavelengths are:

Wavelength (nm)

1 121.56701

2 102.57220

3 97.253650

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Related Questions

an inquisitive physics student and mountian climber climbs a 44.3 m cliff that overhangs a calm pool of water. he throws two stones vertically downward, 0.75 s apart and observes that they cause a single splash. the first stone has an initial velocity of 1.75 m/s. how long after release of the first stone do the two stones hit the water?

Answers

It will take 6.7secs to hit second stone after the first stone of velocity 1.75m/s.

We set \(y_{i}\) =0 at the top of the cliff, and find the time interval required for the first stone to reach the water using the particle under constant acceleration model:

\(y_{r} = y_{i} + v_{yi}t + \frac{1}{2} a_{y} t^{2}\)

If we take the direction downward to be negative,

\(y_{f} = -44.3 m, v_{yi} = -1.75 m/s, and a_{y} = -9.80m/s^{2}\)

Substituting these values into the equation, we find

\((4.90m/s^{2} )t^{2} + (1.75m/s)t - 44.3m = 0\\\)

We now use the quadratic formula. The stone reaches the pool after it is thrown, so time must be positive and only the positive root describes the physical situation:

\(t = -1.75m/s + \sqrt{1.75m/s^{2} - 4(4.90m/s^{2} (- 44.3m)} / 2(4.90m/s^{2} )\)

t = 6.7 s

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A 500-lb. pile driver is raised to a height of 12 feet, then dropped.
____ ft-lbs of work is done on the pile driver in raising it.

The increase in the pile driver's potential energy is
____ ft-lbs.

What is the maximum kinetic energy the pile driver will have after it is released is
______ ft-lbs.

Answers

Answer:

1 = The answers are 6, 60, 600, or 6

Explanation:

What is the potential difference measured if the following voltmeter (refer to picture) is used and connected to the circuit via the 3V terminal?

What is the potential difference measured if the following voltmeter (refer to picture) is used and connected

Answers

The potential difference measured if the given voltmeter is used and connected to the circuit via the 3V terminal is 1.4 V.

The reading of voltmeter is taken for the row with 0, 1, 2 and 3 values. Each  line indicates 0.1 volts. The distance between each smaller lines indicates 0.2 volts and the distance between each longer lines indicates 0.2 volts.

A voltmeter is a device used to measure the potential difference between two points in a circuit. Potential difference is also called as voltage. Its unit is volts.

V = IR

V = Voltage

I = Current

R = Resistance

Therefore, the potential difference measured is 1.4 V

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he functional unit of the kidney is the .

Answers

Answer:

maintaining overall fluid balance regulating and filtering minerals from blood filtering waste materials from food, medications, and toxic substances.

Explanation:

Answer: Nephrons

Explanation: The structural and functional unit of the kidney is known as nephrons. These are microscopic structures found in the kidneys.

A healthy adult has 0.8 to 1.5 million nephrons in the kidney of a adult. Its main function is filtration of the blood.

Blood is filtered and the impurities are collected to excrete out of the body in the form of urine.

what is the value and the direction of an electric field at a distance of 2.5 m from a 1 nc charge?

Answers

The electric field strength is positive, which means that the direction of the electric field is radially outward from the charge.

What is an electric field?

The electric field strength at a distance r from a point charge q is given by:

\(E = k*q/r^2\)

where k is Coulomb's constant, which has a value of approximately\(9.0 x 10^9 N m^2/C^2.\)

In this case, we have a point charge \(q = 1 nC = 1 x 10^-9 C\)  located at a distance r = 2.5 m.

Substituting these values into the equation above, we get:

\(E = (9.0 x 10^9 N m^2/C^2) * (1 x 10^-9 C) / (2.5 m)^2\)

\(E = 1.44 x 10^-6 N/C\)

The electric field strength is positive, which means that the direction of the electric field is radially outward from the charge.

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A biker with a mass of 75.0 kg moves along the path with a constant velocity of 5.00m/s. What is the bikers momentum?

Answers

Given the mass of the biker is m = 75.0 kg.

The constant velocity is v = 5.00 m/s.

The momentum of the biker is calculated by the formula.

\(p=mv\)

Put the given values,

\(\begin{gathered} p=(75.0kg)\times(5.00\text{ m/s)} \\ p=375kg\text{ m/s} \end{gathered}\)

Thus, the biker's momentum is p = 375 kg m/s.

What is the average speed of the car ??

What is the average speed of the car ??

Answers

90km/ h that’s the average speed

Answer:

90 km / hr

Explanation:

V = S / t = 60 * 3.6 km / 2.4 hr = 90 km / hr

Hope that helps <3

Which is true for every atom of an element?

A.
It can be seen with a magnifying glass.

B.
It is joined together with another atom.

C.
It has mass and volume.

D.
It is weightless.

Answers

Answer:

A

Explanation:

Every atom of an element has its own mass and volume as the atom is the smallest fundamental unit of the matter, therefore the correct answer is option C.

What is the matter?

Anything which has mass to keep the same when comparing the hardness of the solid and occupies space is known as matter, mainly there are four states of matter solid liquid gases, and plasma.

As given in the problem statement we have to find the true statement from the given options that is true for every atom of an element,

The size of an atom of an element is a very small order of magnitude so it can not be seen with a magnifying glass, therefore, option A is not the correct response.

Thus, every atom of an element has its own mass and volume as the atom is the smallest fundamental unit of the matter, therefore the correct answer is option C.

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9. Jayden says that the dentist can shine a special light on his teeth that will make his teeth become whiter. Can light change Jayden’s teeth?

Answers

While it is true that a dentist can use a special light during a teeth whitening procedure, it is not the light that actually changes the color of the teeth.

The light is simply a catalyst that activates a chemical reaction in the whitening gel or solution that is applied to the teeth.

Most teeth whitening products use a peroxide-based gel or solution, which breaks down into water and oxygen ions when it comes into contact with the teeth.

These oxygen ions then penetrate the enamel and dentin of the teeth, breaking apart the chemical bonds that cause tooth stains and discoloration.

The process of whitening teeth can take several treatments, with the use of a special light during each treatment to help speed up the chemical reaction.

So, in short, it is not the light itself that changes the color of Jayden's teeth, but rather the chemical reaction that is activated by the light.

Which type of electromagnetic radiation is used in cancer treatment?
A. X-rays
B. Visible light
C. Gamma rays
D. Infrared radiation

Answers

Answer:

C. Gamma Rays

Explanation:

A P E X

Answer:

C. Gamma rays

Explanation:

got it right

if an object can make 10 revolutions in a minute, what's is period

Answers

Answer:

Period = 6 seconds.

Explanation:

Given the following data;

Number of oscillation, n = 10

Time = 1 minute to seconds = 60 seconds

To find the period;

A period is the number of revolutions in a minute.

\( Period = \frac {time}{number \; of \; oscillations}\)

Substituting into the equation, we have;

\( Period = \frac {60}{10}\)

Period = 6 seconds.

A student puts a beaker of boiling water where it touches a block of ice.
Which two statements are true?
A. Thermal energy will move from the boiling water to the ice.
B. Thermal energy will move from the air to the ice.
O c. Thermal energy will move from the air to the boiling water.
D. Thermal energy will move from the ice to the air.
O​

A student puts a beaker of boiling water where it touches a block of ice.Which two statements are true?A.

Answers

Answer:

Option (A).

Explanation:

When a hot and a cold objects come in thermal contact with each other,exchange of heat takes place between them until thermal equilibrium is reached.

In this process thermal energy flows from high temperature to low.

Therefore, when a beaker of boiling water comes in touch with a block of ice,

Thermal energy starts flowing from boiling water to block of ice until equilibrium is established.

Option (A) will be the answer.  

1. A container at 400 K contains helium and neon atoms. What is
the ratio of the fraction of helium atoms that have a speed between
999 m/s and 1001 m/s to the fraction of neon atoms in the same
range

Answers

The ratio of the fraction of helium atoms that have a speed between 999 m/s and 1001 m/s to the fraction of neon atoms in the same range is equal to the square root of the ratio of their molar masses.

The speed of gas molecules follows a Maxwell-Boltzmann distribution, which is dependent on the temperature and molar mass of the gas. In this case, we are given a container at 400 K containing helium and neon atoms. The fraction of atoms within a specific speed range can be determined by integrating the Maxwell-Boltzmann distribution over that range.

To calculate the ratio of the fractions, we can compare the integrals of the Maxwell-Boltzmann distribution for helium and neon over the given speed range. Since the temperature is the same for both gases, the ratio will be solely determined by the ratio of their molar masses.

Helium has a molar mass of approximately 4 g/mol, while neon has a molar mass of approximately 20 g/mol. Taking the square root of the ratio of their molar masses, we get √(4/20) = √(1/5) = 1/√5.

Therefore, the ratio of the fraction of helium atoms with speeds between 999 m/s and 1001 m/s to the fraction of neon atoms in the same range is 1/√5.

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to what tension (in newtons) must you adjust the screw so that a transverse wave of wavelength 3.13 cm makes 525 vibrations per second?

Answers

The tension in the screw must be adjusted to 6270 Newtons in order for the transverse wave to make 525 vibrations per second with a wavelength of 3.13 cm.  

The formula for the tension in a screw is: T = 2πWL

Where T is the tension, W is the angular frequency (vibrations per second), and L is the length of the screw.

To find the tension, you need to know the wavelength and the frequency of the transverse wave. The wavelength is given as 3.13 cm, and the frequency is given as 525 vibrations per second.

To solve for the tension, you can rearrange the formula to solve for T:

T = 2πWL

T = 2π(525)(3.13)

T = 6270 Newtons

So the tension in the screw must be adjusted to 6270 Newtons in order for the transverse wave to make 525 vibrations per second with a wavelength of 3.13 cm.  

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A car is moving at a velocity of 25 ms-1.
It accelerates at a rate of 6 ms-2.
Find its velocity after 3 seconds

Answers

Velocity = 25 + (6x3)= 43 m/s

which products rely on the ability of ionic compounds to conduct electricity? check all that apply.
1. papers
2. cell phones
3. soaps
4. glazed pottery
5. remote control toys

Answers

The products that rely on the ability of ionic compounds to conduct electricity are:
2. Cell phones
5. Remote control toys

Find the direction of the sum of
these two vectors:

Find the direction of the sum ofthese two vectors:

Answers

Go up n duh left corner den expand

some appliances state the wattage on the back. this number may not match the meter reading from your experiment. why do you think this may happen?

Answers

The difference between the wattage stated on an appliance and the meter reading from your experiment could be due to inaccuracies in the appliance wattage rating, variability in power consumption, meter accuracy, or additional power consumption beyond the stated wattage.

There are a few reasons why the wattage stated on an appliance may not match the meter reading from your experiment:

Inaccuracy of the appliance wattage rating: The wattage stated on the appliance may not be accurate. This could be due to manufacturing tolerances or errors in the testing process. The actual wattage consumed by the appliance may be higher or lower than the stated rating.

Variability in power consumption: The power consumption of an appliance can vary depending on its usage. For example, a microwave may consume more power when heating food for a longer period of time compared to when it is heating for a shorter time. The wattage stated on the appliance may be an average value, while the meter reading may reflect the actual power consumed during your experiment.

Meter accuracy: The meter used in your experiment may not be accurate. Meters can have errors due to various factors such as age, calibration, or environmental conditions. This could lead to a difference in the reading compared to the wattage stated on the appliance.

Additional power consumption: Appliances may consume additional power beyond their stated wattage due to factors such as power surges, power factor correction, or standby power consumption. These additional factors may not be accounted for in the stated wattage, leading to a difference in the meter reading.

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You fill a car with gasoline. The car now has... ( what energy)

Answers

Answer:

Chemical Potential Energy Energy

Energy is the capacity for doing work or supplying heat. When you fill your car with gasoline, you are providing it with potential energy. Chemical potential energy is the energy stored in the chemical bonds of a substance.J

Explanation:

Describe the movement of molecules in an ice cube at the temperatures shown, and indicate whether the ice cube will change state.

Answers

Answer:            The ice molecules expand and  become stuck since the water is frozen and start to vibrate

Explanation:

According to the concept of thermal energy, as the temperature rises thermal energy increases and molecules start vibrating faster and ice changes it's state to water  that is from solid to liquid.

What is thermal energy?

Thermal energy is defined as a type of energy which is contained within a system and is responsible for rise in temperature.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance containing  molecules or atoms are vibrating faster.

These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the  number of collision of particles , higher is the thermal energy.

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What are the fastest spinning objects known in the universe?
What keeps you in your seat during a loop-the-loop rollercoaster?

Answers

1) neuron stars

2) centrifugal force

A ball is thrown straight down with an initial speed of 2.0 m/s from a height of 15 m. What is the position of the ball after 3.0 s, in meters

Answers

The position of the ball after 3.0 s, in meters is 38.1.

Given data: Initial velocity u = -2.0 m/s, Height h = 15 m, Time t = 3.0 s, Acceleration due to gravity g = 9.8 m/s². Position of the ball after 3.0 s, in meters can be calculated as follows:

Let's calculate the final velocity of the ball vf using the below formula:

v = u + gt …

(1)Substitute the given values in equation

(1),v = -2.0 + (9.8 × 3.0)

= 27.4 m/s

We know that the acceleration of the ball is acting in the downward direction. Therefore, the velocity of the ball is also in the downward direction. Hence, the value of v will be negative.Let's calculate the position of the ball after 3.0 s using the below formula:

s = ut + ½gt² …

(2)Substitute the given values in equation

(2),s = -2.0 × 3.0 + ½ × 9.8 × (3.0)²

= -6.0 + 44.1

= 38.1 m

The position of the ball after 3.0 s, in meters is 38.1 meters.

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Water waves and light waves are both examples to

Answers

Answer:

Transverse waves

Explanation:

Transverse waves are a type of wave that oscillates perpendicular to the direction of movement (the direction of propagation). These type of waves are usually represented by the sine or cosine functions due to the up and down oscillation of the waves.

In the case of water waves the thing that oscillates up and down are the water particles affected by the disturbance.

And for the case light waves what oscillates are the electric and magnetic fields, both oscillating perpendicular to the direction of light propagation.

Which of these shows the position of the Sun, Moon, and Earth when a full moon phase occurs? (8.7B)

Answers

Answer:

Lunar eclipse

Explanation:

Lunar eclipse occurs when Earth comes in between sun and Moon. The moon is either partially or fully blocked and the moon sighting appears to be black from earth since the light rays coming from sun are blocked by Earth. Lunar eclipse occurs only at full moon. The moon is aligned with the position of earth and sun so that they all form a straight line.

A campfire is a good example of all three types of heat transfer. The molecules of the fire touching the pot and heating it up is __________________. The air above the fire heating up, becoming less dense and rising is an example of _________________. All around the campfire you can feel the waves of heat because of _____________.

Answers

Heat can be transferred in three ways: by conduction, by convection, and by radiation.
Conduction is the transfer of energy from one molecule to another by direct contact. ...
Convection is the movement of heat by a fluid such as water or air. ...
Radiation is the transfer of heat by electromagnetic waves.

You are designing an apparatus to shoot a water balloon through a 3rd story window (25m above the ground)

You are designing an apparatus to shoot a water balloon through a 3rd story window (25m above the ground)

Answers

Answer:

The balloon needs a vertical velocity of approximately 22.14 m/s to reach the window

Explanation:

The given parameters are;

The destination of the designed water balloon we shoot = The 3rd story window

The height of the 3rd story window which the water balloon should reach = 25 m

Therefore, we have, the equation of motion of the water balloon given as follows;

v² = u² - 2 × g × s

Where;

\(u_y\) = The initial vertical velocity of the balloon

\(v_y\) = The final vertical velocity of the balloon = 0 m/s

g = The acceleration due to gravity = 9.8 m/s

s = The height the balloon is intended reach at the final velocity becomes 0 m/s = The height of the 3rd story window

∴ s = 25 m

Substituting the values, we have;

0² = \(u_y\)² - 2 × 9.8 × 25

\(u_y\)² = 2 × 9.8 × 25 = 490

\(u_y\) = √490 = 7·√10

The initial vertical velocity of the balloon = \(u_y\) = 7·√10 m/s

Therefore, the balloon needs a vertical velocity of 7·√10 m/s which is approximately 22.14 m/s to reach the window.

a flywheel rotating at 12 rev/s is brought to rest in 6 s. the magnitude of the average angular acceleration of the wheel during this process is:

Answers

The rate at which the speed and direction of a moving object vary over time.  Acceleration is 4 m/s2.

What is Acceleration?

A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Acceleration is a vector quantity since it has both a magnitude and a direction. A vector quantity is also velocity. The velocity vector change during a time interval divided by the time interval is the definition of acceleration.

w  i  =12×2π rad

     =24πs/ ra

=6/ 24π=−4π sec  2rad

Therefore, The rate at which the speed and direction of a moving object vary over time.  Acceleration is 4 m/s2.

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A hockey puck slides with constant velocity. Which claim about the forces acting on the hockey puck must be true? Choose 1 answer: Choose 1 answer: (Choice A) A There is not enough information. (Choice B) B There is no net force on the hockey puck. (Choice C) C There is a net force on the hockey puck. (Choice D) D There are no forces on the hockey puck.

Answers

Answer:

Choice B) B There is no net force on the hockey puck.

Explanation:

In case when the hockey puck the slides with the same velocity or constant velocity so the force with respect to the hockey should contain that there is no net force as if the body moves along with the same velocity or the constant velocity so in this case the body acceleration is zero

And according to the newton second law i.e.

F = ma

In case when the acceleration is zero so the net force is zero

Therefore the option b is correct

A 3 kg purple ball moving at 2 m/s to the right collides with a 2 kg white ball at rest. After the collision the purple ball comes to rest (0 m/s). What is the velocity of the white ball after the collision?

Answers

Answer:

1.2m/s

Explanation:

Using the law of conservation of energy

m1u1+m2u2 = (m1+m2)v

v is the common velocity after collision

Substitute the given values

3(2) + 2(0) = (3+2)v

6 + 0 = 5v

v = 6/5

v = 1.2m/s

Hence the velocity of the white ball after the collision is 1.2m/s

What is the order of brightness of the bulbs, from brightest to dimmest? Some may be equal. Rank from brightest to dimmest. To rank items as equivalent, overlap them.

Answers

There is no information or context provided about the bulbs in question, so it is not possible to rank them in order of brightness.

The brightness of a bulb depends on a variety of factors, including its wattage, voltage, and type of bulb. Without knowing more information about the bulbs, it is impossible to rank them accurately.Voltage is the difference in electric potential energy between two points in a circuit. It is created by the separation of electric charges, which generates an electric field. The greater the separation of charges, the greater the voltage.

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