According to the balmer-rydberg equation, which transition results in the emission of a photon in the ultraviolet region of the electromagnetic radiation spectrum?.

In an incompressible flow, the speed at which an acoustic wave propagates depends on the physical properties of the medium through which it is traveling. Generally speaking, the speed of an acoustic wave in an incompressible flow is slower than in a compressible flow, since the latter can support pressure waves that move faster than sound.

The speed of an acoustic wave in an incompressible flow can be calculated using the following formula:

c = √(K/ρ)

where c is the speed of the wave, K is the bulk modulus of the medium (a measure of its resistance to compression), and ρ is its density.

For example, if we assume a bulk modulus of 2.3 GPa and a density of 1000 kg/m^3 (typical values for water), we get a speed of approximately 1500 m/s for an acoustic wave in an incompressible flow.

It's worth noting that this speed can vary depending on the exact conditions of the flow, as well as any obstructions or other features that might affect the propagation of the wave. Nonetheless, the above formula provides a useful starting point for understanding the speed of acoustic waves in incompressible flows.

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The answers for the given questions about topic tension:

1. c.) More than ΔL

2. b.) <1

Light and strong, an aluminium rod is highly resistant to corrosion and is ideal for both indoor as well as outdoor use as it can withstand a variety of environmental conditions. Our aluminium rods, which are also referred to as aluminium round bars, are provided in the 6000 series, which has the greatest commercial versatility.

The mechanical sectors can use aluminium alloy wire rods for things like bolts, nuts, nails, needles, rivets, clips, and staples.

1.  stress = Y strain

(F /  A) = Y  (deltaL / L)

deltaL / L  = constant  (for this problem)

delta(L) / 1 = delta(L') / 2

delta(L') = 2 delta(L)

2. deltaL A  = constant

L_thick (2A) = Lthin (A)

L_thick / L_thing = 1/2  < 1

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When you create a best-fit line, the expected value of the slope represents the average rate of change in the dependent variable (y) for every unit increase in the independent variable (x). The slope helps you make predictions and understand the relationship between the two variables in your dataset.

When you create a best-fit line, the expected value of the slope is the coefficient that represents the rate of change between the two variables being analyzed. The slope is determined by finding the ratio of the change in the dependent variable to the change in the independent variable.

It is important to note that the slope of a best-fit line is not always a perfect representation of the true relationship between the variables, but rather an approximation based on the available data. Therefore, the expected value of the slope is subject to variation and uncertainty depending on the specific data set and methodology used to create the best-fit line.
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Answer:

2.5 Hz

Explanation:

3.0m/s / 1.2 m=2.5 1/s=2/5 Hz

The frequency of a wave with speed of 3.0 m/s and has a wavelength of 1.2m is 2.5 Hz.

The frequency of a wave is the number of cycles per second.

Given the wavelength is 1.2 m and speed v =3.0m/s, then the frequency of the wave is

v =fλ

f = 3 / 1.2

f = 2.5 Hz

Thus, the frequency of the wave is 2.5 Hz.

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Answer:

Because the output force is greater than the input force, the input distance must be greater than the output distance.

Explanation:

Answer:

False

Explanation:

i got it right

The statement is false. Because, the place where, it is easy to hear soft voices is acoustically good. Acoustically strong rooms facilitates the sound waves of even soft pitches.

Acoustics is the study of sound waves. Engineers strictly consider the concepts of acoustics to design the auditoriums and theater rooms to filter the sound effects in perfect pitches.

The frequency of a sound wave is called pitch. Thus lower frequency waves are lower pitch and they are termed as soft voices. Soft voices are hard to hear.

However, building where  it is very easy to hear soft voices is acoustically good room. Therefore, the statement is false. The building is good in acoustics suitable for sound effects.

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Using the left hand rule, if current points up and the field is toward you,  the  motion points up.

The left hand rule states that if the thumb, the fore finger and the middle finger are held mutually perpendicular to each other, the thumb points in the direction motion, the middle finger points in the direction of current while the fore finger points in the direction of the magnetic field.

Thus using the left hand rule, if current points up and the field is toward you,  the  motion points up.

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The terminal velocity of the 20 g object attached to a 50 cm diameter parachute falling through the sky at a temperature of 20 °C is approximately 6.5 m/s.

Terminal velocity is the maximum velocity reached by a falling object when the force of gravity is balanced by the drag force. The drag force on an object falling through a fluid depends on various factors, including the object's size, shape, and velocity.

To calculate the terminal velocity, we can use the following equation:

Vt = √((2 * m * g) / (ρ * A * Cd))

where:

Vt is the terminal velocity,

m is the mass of the object (20 g = 0.02 kg),

g is the acceleration due to gravity (9.8 m/s²),

ρ is the density of the fluid (air at 20 °C = 1.204 kg/m³),

A is the cross-sectional area of the object (π * r², where r is the radius of the parachute = 25 cm = 0.25 m),

and Cd is the drag coefficient for the object (assumed to be 1 for a parachute).

Plugging in the values into the equation, we get:

Vt = √((2 * 0.02 kg * 9.8 m/s²) / (1.204 kg/m³ * π * (0.25 m)² * 1))

Vt ≈ 6.5 m/s

Therefore, the terminal velocity of the object attached to the parachute is approximately 6.5 m/s.

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The total electric potential will be 4.50 ×10⁴ V. The potential difference is the difference in electric potential between two charged substances.

The amount of work performed in an electrical field to move a unit charge from one location to another is defined as the electrical potential difference.

The distance between all charges and the center is the same. The 10,500 mC, 11.50 mC, 21.00 mC, and 20,500 mC charges neglect each other's potentials.

Hence, the total electric potential will be 4.50 ×10⁴ V.

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Net force = 4 N

Direction is right

Answer: 4N right

Explanation:

ANSWER

EXPLANATION

We want to find the angle of reflection of the ray of light.

According to the law of reflection, the angle of reflection must be equal to the angle of incidence of a ray of light:

Therefore, the angle of reflection of the ray of light is:

That is the answer.

Answer: 160 km

Explanation:

The total displacement of the person will be 15 km.

If we move in a straight path means that moves towards 5 km north and then a person moves towards the 5 km west, so the total displacement of the person will be 15 km and the reason behind this is given below;

For example a car moves towards the north 5km and then directly he want to go towards the 5km west, so the total displacement will be 15 km because the car first moves towards the north so he covered 5 km and then the car directly goes towards the west 5 km, so for coming this he will again come to his initial stage and then the car will go towards the west and covers 5 km. So therefore the total displacement will be 15 km.

So we can conclude that the total displacement of the person will be 15 km.

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In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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Answer:

c

Explanation:

Answer:

C.

Explanation:

When there is heat the water turns into vapour if not covered but will turn back to water if covered (condensation)

Answer + Explanation:

To calculate how many years the investment will be able to cover Rayelle's college costs, we need to know the annual cost of tuition, fees, room, and board at a public college. Let's assume that this cost is $20,000 per year.We also need to know the future value of the investment after 15 years. Using the compound interest formula, we can calculate that the future value of the investment will be:

FV = PV * (1 + r/12)^(n*12)

where PV is the present value of the investment, r is the annual interest rate, n is the number of years, and FV is the future value of the investment.Plugging in the numbers, we get:

FV = $15,000 * (1 + 0.045/12)^(15*12) = $29,286.95

So, after 15 years, the investment will be worth $29,286.95.To calculate how many years the investment will be able to cover Rayelle's college costs, we can divide the future value of the investment by the annual cost of college, and then divide by 12 to get the number of years in months. This gives us:

Years = FV / (Annual cost of college) / 12

Years = $29,286.95 / $20,000 / 12 = 12.24 years

So, the investment will be able to cover Rayelle's college costs for approximately 12 years and 3 months. Rounded to the nearest month, the answer is 147 months. Therefore, the investment will be able to cover Rayelle's college costs for about 147 months.

Hope this helps!

- Dante

We have ,

Using above formula for first case

Now equivalent capacitance(C) of combination is given by

Now for second case , let Q= required charge

a) Charge is given by

b) Potential difference is

First Process: When a person push the wall, then the wall is displaced from one point to another. The person is pushing the wall which means he is applying the external force to the wall but the wall is not displacing. As the wall does not displaced therefore, the distance covered by the wall is zero.

Now, the work done is given as the product of force applied to the object with the distance covered. Since the distance covered is zero therefore, work done is also zero.

Second Process: When a person holds some luggage on the head, then the work done is said to be zero. Because the force acting on the person is in perpendicular direction and the work done also depends upon the cosine angle between force acting and the distance covered. As the distance is covered along horizontal direction and the force is applied in the vertical direction therefore, angle between them is 90 degree and cosine of 90 degree is zero.

Therefore, the work done by the person carrying the luggage is zero.

The speed of the water at the lower level is 2.5 m/s. As we can see, the decrease in speed is due to the increase in cross-sectional area of the pipe, which allows the water to flow more slowly.

To solve this problem, we can use the principle of conservation of mass, which states that the mass of a fluid flowing through a pipe must remain constant. This means that the product of the cross-sectional area and the speed of the water must be constant throughout the pipe.
Let's denote the speed of the water at the lower level as v2. We can use the formula for the conservation of mass to find v2:
A1v1 = A2v2
Where A1 and v1 are the cross-sectional area and speed of the water at the higher level, and A2 is the cross-sectional area at the lower level.
Substituting the given values, we get:
(4.0 cm^2)(5.0 m/s) = (8.0 cm^2)(v2)
Simplifying, we get:
v2 = (4.0 cm^2)(5.0 m/s) / (8.0 cm^2) = 2.5 m/s
Therefore, the speed of the water at the lower level is 2.5 m/s. As we can see, the decrease in speed is due to the increase in cross-sectional area of the pipe, which allows the water to flow more slowly.

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Explanation:

A simple way to state Newton's first law is:

For every action force, there is a reaction force which is equal in magnitude and opposite in direction.

The correct option for the photon wavelength is d. inversely proportional to photon frequency. The wavelength of a photon, like any other wave, is the distance between two successive peaks (or troughs) in space, and it is inversely related to its frequency.

That is, the frequency of the wave is inversely proportional to the wavelength. As the frequency of a wave grows, its wavelength decreases, and vice versa.

The wavelength of a photon is inversely proportional to its frequency. The wavelength is the distance between the two successive crests or troughs in the wave, while the frequency is the number of crests or troughs that pass a given point in one second. The energy of a photon, which is inversely proportional to its wavelength and directly proportional to its frequency, is proportional to its frequency.

If we consider the electromagnetic spectrum from gamma rays to radio waves, we can see that the wavelength of the wave decreases as we move from the left to the right side of the spectrum. This is due to the fact that the frequency of a wave increases as its wavelength decreases, and vice versa. Gamma rays have the shortest wavelength and the highest frequency, while radio waves have the longest wavelength and the lowest frequency.

Photon is a kind of electromagnetic radiation that behaves as both a wave and a particle. It carries a certain amount of energy and is commonly used to describe light. The frequency and wavelength of a photon are two important characteristics that influence its behavior. The frequency and wavelength of a photon are inversely proportional, which means that as one increases, the other decreases. Photons are used in a wide range of applications, including imaging, communication, and energy generation.

The wavelength of a photon is inversely proportional to its frequency, which means that a photon with a higher frequency has a shorter wavelength than one with a lower frequency. The energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength. This implies that photons with high frequencies and short wavelengths have a greater amount of energy than those with low frequencies and long wavelengths. The frequency of a photon can be determined using the equation E = hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the photon.

The wavelength of a photon can be calculated using the formula λ = c/f, where λ is the wavelength, c is the speed of light, and f is the frequency of the photon.

The wavelength of a photon is inversely proportional to its frequency. As the frequency of a photon increases, its wavelength decreases. This relationship is important in many applications, such as imaging, communication, and energy generation. It is also a key factor in understanding the behavior of light.

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Answer:

How we know, the equation is:

W = mg

Replacing according our data:

W = 53 kg × 9,8 m/s^2

Resolving:

W = 519,4 N

The weight of the object is of 519,4 Newtons.

(a) magnitude of the final velocity is 11.94 m/s, and the (b) angle of the final velocity with respect to the positive x-axis is 37.1°.

We can tackle this issue utilizing kinematic conditions. Since the speed increase is consistent, we can utilize the accompanying conditions:

v = u + at

s = ut + 1/2 \(at^2\)

\(v^2 = u^2\) + 2as

where u is the underlying speed, v is the last speed, t is the time, s is the dislodging, and an is the speed increase.

Given: u = 4.00 m/s I, a = 5.00\(m/s^2\) I + 7.00 \(m/s^2\) j, s = 12.0 m lined up with the x-pivot.

Utilizing the second kinematic condition, we can address for the time taken to venture to every part of the distance:

s = ut + 1/2 \(at^2\)

12.0 = 4.00t + 1/2 (5.00)\(t^2\)

5.00\(t^2\) + 4.00t - 12.0 = 0

Settling for t utilizing the quadratic recipe, we get:

t = 1.09 s (taking the positive root)

Utilizing the first kinematic condition, we can tackle for the last speed in the x-course:

v_x = u_x + a_x t

v_x = 4.00 + 5.00(1.09)

v_x = 9.45 m/s

Utilizing the Pythagorean hypothesis, we can track down the greatness of the last speed:

|v| = sqrt(\(v_x^2 + v_y^2\))

|v| = sqrt((\(9.45)^2\) + (\(7.00)^2\))

|v| = 11.94 m/s

Utilizing the reverse digression capability, we can track down the point of the last speed regarding the positive x-hub:

θ = \(tan^(- 1)\)(v_y/v_x)

θ = \(tan^(- 1)\)(7.00/9.45)

θ = 37.1°

Thusly, the (a) magnitude of the last speed is 11.94 m/s, and the (b) angle of its velocity as for the positive x-pivot is 37.1°.

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The complete question is:

A moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration  

a=(5.00m/s 2) i^+(7.00m/s 2) j^ .

At time t=0, the velocity is (4.00m/s) i ^.What are the (a) magnitude and (b) angle of its velocity when it has been displaced by 12.0m parallel to the x axis?

Answer:

For starters the membrane voltage is the same in nerve cells as in muscle cells.

As for skin and muscle cells, both cells arise from the same type of embryonic layer, the ectoderm and both which produces energy, though skin cells eventually lose their organelles.

Although a magnet can change the direction of travel of an electron beam, it cannot change its charge. The charge of an electron is a fundamental property and is not affected by magnetic fields.

A magnet is an object or material that produces a magnetic field, which can exert attractive or repulsive forces on other magnets or magnetic materials. It has a north pole and a south pole with opposite magnetic polarities. Magnets can be natural or artificial, and they are used in numerous applications like electric motors, generators, speakers, magnetic storage devices, and medical imaging machines. They play a crucial role in various industries and scientific fields where the manipulation of magnetic fields is necessary.

They are also commonly used in magnetic compasses for navigation and in various industrial and scientific applications where the manipulation of magnetic fields is required.

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When the plate separation of a charged parallel plate capacitor is increased, the potential difference between the plates decreases.

In a parallel plate capacitor, the potential difference (V) between the plates is directly proportional to the electric field (E) between the plates and the plate separation (d). Mathematically, V = Ed. Therefore, if the plate separation is increased to 4d, the electric field between the plates decreases by a factor of 1/4. Since the potential difference is directly proportional to the electric field, it also decreases by the same factor of 1/4. In other words, the potential difference decreases by 75% (or 3/4) when the plate separation is increased to 4d.

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Answer:

150

Explanation:

work done = constant force x distance moved in the direction of force

W = F x S

(UNITS: J = N x m)

50 x 3 = 150

a).  frequency = (speed) / (wavelength)

The speed of light is around 3 x 10⁸ m/s.

For 380 nm (violet light), frequency = (3 x 10⁸ m/s) / (380 x 10⁻⁹ m)

Frequency = 7.89 x 10¹⁴ Hz

For 760 nm (red light), frequency = (3 x 10⁸ m/s) / (760 x 10⁻⁹/s)

Frequency = 3.94 x 10¹⁴ Hz

The ratio is 2 .

That's 1 octave, or 0.3 of a decade.

b).  The ratio of highest/lowest sounds is (20,000 Hz/20 Hz) = 1,000

That's 3 decades, or about 10 octaves.

===> Speaking logarithmically ( ! ), ears are sensitive to a range of sound frequencies that's 10 times as wide as the range of light frequencies that eyes can detect.

Answer:

This energy, called the heat of fusion or heat of melting, is absorbed by the particles as potential energy as the solid changes to a liquid

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Explanation:

Changing states of matter occur when matter loses or absorbs energy. When a substance absorbs energy, the atoms and molecules move faster and that increases kinetic energy, which causes particles to push even farther, to a point that they change its form. This energy is usually considered heat or thermal energy.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hope I helped!!!

GL :)

The impact speed will be

v^2 = 2*9.8*1.3

v^2 = 25.48

v= 5.04 m/s or O C. 5.0 m/s