What is the speed of a wave that has a frequency of 125 hz and a wavelength of 1. 25 meters? express your answer to the nearest whole number.

The electromagnetic spectrum is a frequency system that shows the wavelengths and intensities of electromagnetic radiation.

The electromagnetic spectrum is a frequency system that depicts electromagnetic radiation, wavelengths, and photon energies.

The electromagnetic spectrum that is seen as colors: violet, indigo, blue, green, yellow, orange, and red.

Radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays are examples of frequencies found in the electromagnetic spectrum.

Hence, the above definition introduce the electromagnetic spectrum.

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This means that the roller coaster is decelerating at a rate of 8m/s² until it comes to a complete stop.

Decelerating is the process of slowing down or decreasing the speed of a vehicle, person, or object. It is the opposite of accelerating, which is the process of increasing speed. Deceleration can be caused by the force of friction from the road or other surfaces, or by reducing the amount of engine power or braking. Deceleration is necessary to safely slow down and stop a vehicle and to negotiate turns or curves in the road.

The acceleration of the roller coaster can be calculated using the equation
a = (Vf - Vi)/t, where Vf is the final velocity, Vi is the initial velocity, and t is the time taken for the change in velocity to occur.
In this case, Vf = 0m/hr, Vi = 80m/hr, and t = 10s.
Therefore, the acceleration of the roller coaster is -8m/s².
This means that the roller coaster is decelerating at a rate of 8m/s² until it comes to a complete stop.

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The radius of the spheres of influence of Mercury, Venus, Mars, and Jupiter can be found in Table A.2.

Table A.2 provides the radius of the spheres of influence of various celestial bodies, including Mercury, Venus, Mars, and Jupiter. The radius of a sphere of influence is the distance from the center of the planet at which the gravitational influence of the planet is stronger than the gravitational influence of any other celestial body. For Mercury, the radius of the sphere of influence is approximately 0.39 astronomical units (AU), for Venus it is approximately 0.72 AU, for Mars it is approximately 1.52 AU, and for Jupiter it is approximately 31.0 AU. These values are useful for understanding the extent of each planet's gravitational pull on objects in its vicinity.

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Answer:

N = N0 e^-kt          calling k the decay constant

70 = N0 e^-2 kt

35 = N0 e^-15 k

2 = e^(-2 + 15) k

.693 = 13 k

k = .0533

N0 = N e^kt

N0 = 70 e^(.0533 * 2) = 77.87

8.75 = 77.87 e^-(.0533 t)

ln .1124 = -.0533 t

t = -ln .1124 / .0533 = 41 yr

All of the following statements about power are true except power is known as a single-dimension concept. Hence, Option(A) is correct.

Power is often characterized in terms of two characteristics: (1) the capacity to influence one's own and other people's actions, and (2) the freedom to do so. Status, authority, and dominance are all aspects of power, but they are not the same thing.

Status is the result of a social judgement that results in variations in prominence and respect, which add to a person's power within a group. It is possible to have status without relative power and power without status (such as the corrupt politician) (e.g., a religious leader in line at the Department of Motor Vehicles).

Power that comes from institutionalized roles or arrangements is known as authority. However, even in the lack of official responsibilities, power might still exist (e.g., within informal groups).

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When the balloon rises high above earth to a point where the atmospheric pressure is 0.340 atm and its volume increases to 5.00 x 10³ m³, the temperature of the atmosphere at this higher altitude is approximately 255.1 K.

Using the combined gas law, we can determine the temperature at the higher altitude. The combined gas law is:

(P₁ × V₁) / T₁ = (P₂ × V₂) / T₂

Given:
P₁ = 1.000 atm (ground level pressure)
V₁ = 2.00 x 10³ m³ (ground level volume)
T₁ = 27°C + 273.15 (convert to Kelvin) = 300.15 K (ground level temperature)
P₂ = 0.340 atm (higher altitude pressure)
V₂ = 5.00 x 10³ m³ (higher altitude volume)

We want to find T₂, the higher altitude temperature:

(1.000 atm × 2.00 x 10³ m³) / 300.15 K = (0.340 atm × 5.00 x 10³ m³) / T₂

Solving for T₂:

T₂ = (0.340 atm × 5.00 x 10³ m³) × 300.15 K / (1.000 atm × 2.00 x 10³ m³)
T₂ ≈ 255.1 K

So, the temperature of the atmosphere at the higher altitude is approximately 255.1 K.

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Answer:

Q=mc∆tita.

490J= m× 0.5J/Kg/C × (18-0°C)

490J= m × 9J/kg

490J

9J/Kg = m.

m= 54.4Kg

The minimum n for a hydrogen atom that can be ionized by a photon with energy 2.28 eV is n = 2. The energy of a photon is given by E = hf, where E is the energy, h is Planck's constant, and f is the frequency of the photon.

In this case, we are given the energy of the photon as 2.28 eV. To find the frequency, we can use the equation E = hf. Since Planck's constant is a known value, we can rearrange the equation to solve for f.

First, we need to convert the energy from electron volts (eV) to joules (J) since the units of Planck's constant are in joules.

\(1 eV = \(1.6 \times 10^{-19}\) J. \\So, \(2.28\) eV = \(2.28 \times 1.6 \times 10^{-19}\) \\J = \(3.648 \times 10^{-19}\) J.\)

Now, we can substitute this value for

\(\(E\) in the equation \(E = hf\):\\\(3.648 \times 10^{-19}\) J = \(h \times f\).\)

To find the minimum n for a hydrogen atom that can be ionized by this photon, we need to consider the energy levels of the hydrogen atom.

The energy levels of a hydrogen atom are given by the equation:

\(\(E_n = \frac{-13.6 \, \text{eV}}{n^2}\)\),

where \(\(E_n\)\) is the energy level, -13.6 eV is the ionization energy of hydrogen, and n is the principal quantum number.

To find the minimum n, we need to find the energy level that corresponds to an energy greater than or equal to \(\(3.648 \times 10^{-19}\) J.\)

Substituting the values into the equation, we get:

\(\(\frac{-13.6 \, \text{eV}}{n^2} = 3.648 \times 10^{-19}\) J.\)

To compare the energy levels in the same units, we need to convert \(\(-13.6\) eV to joules:\\\(-13.6\) eV = \(-13.6 \times 1.6 \times 10^{-19}\) J = \(-2.176 \times 10^{-18}\) J.\)

Now we can substitute this value into the equation:

\(\(\frac{-2.176 \times 10^{-18}\) J}{n^2} = \(3.648 \times 10^{-19}\) J.\)

To solve for n, we can cross multiply:

\(\(-2.176 \times 10^{-18}\) J = \(3.648 \times 10^{-19}\) J \times \(n^2\).\)

Dividing both sides by

\(\(3.648 \times 10^{-19}\) J, we get:\\\(n^2\) = \(-2.176 \times 10^{-18}\) J / \(3.648 \times 10^{-19}\) J.\\\(n^2\) = \(-5.95\).\)

Since the principal quantum number n must be a positive integer, we can discard the negative solution.

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Answer:

Pressure and velocity are inversely proportional to each other because if pressure increase, the velocity decrease to keep the algebraic sum of potential energy, kinetic energy and pressure constant.

The physical quantity whose SI unit is m/s is speed or velocity.

Hope that this was helpful :)

The hearing test you are describing is called the Rinne test.

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Answer: 1CM CUBE OF LEAD

Explanation:

Answer:

The starting position of the runner.

Explanation:

When you look at the graph, you can see that the first point on the graph is twenty on the y-axis.

The runner starts at twenty, and ends at thirty.

Therefore, the runner starts at twenty on the y-axis, so it's the starting position of the runner.

The y-intercept tell you about the starting position of the runner.

The intersection of the graph of the function with the y-axis gives y-intercept of that function. The y-intercept is the value of y on the y-axis at which the considered function intersects it.

Assume that we've got: y = f(x)

At y-axis, we've got x = 0, so putting it will give us the y-intercept.

Thus, y-intercept of y = f(x) is y = f(0)

When we look at the graph, we can see that the first point on the graph is twenty on the y-axis.

The runner starts at twenty and ends at thirty.

Thus, the runner starts at twenty on the y-axis, so it is the starting position of the runner.

The y-intercept tell you about the starting position of the runner.

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Answer: To calculate the mass of the helium sample, we can use the ideal gas law equation, which relates the pressure, volume, temperature, and amount of gas for an ideal gas:

PV = nRT

Where:

P = pressure of the gas

V = volume of the gas

n = amount of gas in moles

R = universal gas constant

T = temperature in Kelvin

Given information:

Pressure (P) = constant pressure during the process

Initial temperature (T1) = 283 K

Final temperature (T2) = 393 K

Work done by the gas (W) = 40 J

Universal gas constant (R) = 8.31451 J/mol · K

Since the pressure is constant, we can rearrange the ideal gas law equation to solve for the amount of gas (n) in moles:

n = (PV) / (RT)

Substituting the given values into the equation:

n = (constant pressure during the process * volume) / (universal gas constant * temperature)

Now we can calculate the amount of gas in moles.

Next, we can convert the amount of gas from moles to grams using the molar mass of helium (He), which is approximately 4 g/mol.

Finally, we can multiply the mass in grams by 1000 to convert it to grams.

Let's plug in the numbers and do the calculations:

P = constant pressure during the process

V = volume of the gas (not given in the question, need additional information)

R = universal gas constant = 8.31451 J/mol · K

T1 = initial temperature = 283 K

T2 = final temperature = 393 K

W = work done by the gas = 40 J

Molar mass of helium (He) = 4 g/mol

Please provide the value for the volume (V) of the helium gas in order to complete the calculation.

True. Seeking and following the advice of a medical professional when starting a new fitness plan is crucial for several reasons.

A medical professional can assess your current health status, evaluate any pre-existing conditions, and provide personalized recommendations based on your individual needs and limitations. They can guide you on setting realistic goals, determining appropriate exercise intensity, and identifying potential risks or contraindications. Moreover, they can offer guidance on nutrition, injury prevention, and monitor any changes in your health throughout your fitness journey. This professional advice ensures that your fitness plan is safe, effective, and tailored to your specific requirements, maximizing the benefits and minimizing the risks of injury or health complications.

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Answer:

It completely melts and has a final temperature of 22.4°C

Explanation:

(I am very bad at explaining, I am not a teacher, I am a student but I had exact same question on my test so I wanted to help.)

Okay, well to find the Heat required to melt Ice, we have to use the equation:

Q=(m·cΔT)+(m·hf)

So we can just plug in the values into the equation and see which one adds up too 80,000. (there is probably a better way i just did it this way)

For this situation, we know that:

So we can just change the value of change and temperature and see which one equals 80,000.( I will bold the value of change in temperature.)

Q=(m·cΔT)+(m·hf)

So which one equals 80,000? Equation #3 with the temperature at 22.4 °C

So the answer would be It completely melts and has a final temperature of 22.4°C.

Hope this makes sense, again I am not a teacher I am so bad at explaining, but I did my best. ;)

Answer:

Wear a mask and keep a solid 6 feet of social distance

Explanation:

Answer:

Be polite, wear a mask, social distance, don't eat sloppy, have a good time lol

Explanation:

If 120 g of NaOH were used to prepare 500 ml of solution, the concentration would be 6 M

Molarity = ( Weight of solute * 1000 ) / ( GMV * V )

GMV = Gram molecular weight

V = Volume of solution

GMV of NaOH = 26 + 16 + 1

GMV of NaOH = 40

Molarity = ( 120 * 1000 ) / ( 40 * 500 )

Molarity = 120 / 20

Molarity = 6

Molarity or molar concentration is the concentration of chemical species mainly solute in a solution. It is the amount of substance per unit volume of solution.  

Therefore, the concentration of NaOH is 6 M

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Answer:

The phases are the first and third quarters.

Explanation:

During the first quarter of the moon phases, the line between Earth and the Sun is at a right angle to the line between Earth and the moon. At this time the moon has completed the first quarter of its orbit around the earth. At this point, half of the moon is fully reflecting light from the sun.

Also during the third quarter which is the last quarter, the line between the earth and the sun is at a right angle to the line between the earth and the moon. This is the time when the second half of the moon which was not illuminated during the first quarter becomes completely illuminated.

In the movie "American Beauty," capitalism and patriarchy are portrayed as forces that contribute to the main character's sense of dissatisfaction and ennui.

The protagonist, Lester, is a middle-aged man who is disenchanted with his job and his suburban life, which is built on the foundations of capitalism and patriarchal values. The images projected in today's media that are a result of gender inequality often perpetuate unrealistic beauty standards and promote gender roles that reinforce traditional gender norms. These images can send harmful messages to young people, such as the idea that physical appearance is more important than character or that women should prioritize their looks over their intellect or accomplishments.

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The broken pieces of the plates overlie a ductile layer known as asthenosphere.

Plate tectonics is a scientific hypothesis that explains the movement of Earth's lithosphere. Plate tectonics also explains the formation of mountains, volcanoes, and the occurrence of earthquakes. The Earth's lithosphere is composed of the Earth's crust, both continental and oceanic, and the uppermost part of the mantle. The lithosphere is divided into several plates that fit together like a puzzle. These plates are in constant motion, driven by the motion of molten rock in the Earth's mantle.

The plate boundaries can interact with one another in various ways. Divergent plate boundaries are where new lithosphere is created as the plates move apart. At convergent plate boundaries, one plate is forced beneath another. Transform plate boundaries are where plates slide past each other in a sideways movement.

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Answer:

velocity, power, energy, force and density

Explanation:

Answer:

1. The period is 1.74 s.

2. The frequency is 0.57 Hz

Explanation:

1. Determination of the the period.

Spring constant (K) = 30 N/m

Mass (m) = 2.3 Kg

Pi (π) = 3.14

Period (T) =?

The period of the vibration can be obtained as follow:

T = 2π√(m/K)

T = 2 × 3.14 × √(2.3 / 30)

T = 6.28 × √(2.3 / 30)

T = 1.74 s

Thus, the period of the vibration is 1.74 s.

2. Determination of the frequency.

Period (T) = 1.74 s

Frequency (f) =?

The frequency of the vibration can be obtained as follow:

f = 1/T

f = 1/1.74

f = 0.57 Hz

Thus, the frequency of the vibration is 0.57 Hz

The period of the vibration is  1.76 s and the frequency of the vibration is  0.57 s-1.

Using the formula;

T = 2π√(m/K)

Where;

T = period

m = mass

K = spring constant

Substituting values;

T = 2(3.142)√2.3/30

T = 6.284 × 0.28

T = 1.76 s

Recall that the period is the inverse of frequency;

f = 1/T

f = 1/1.76 s

f = 0.57 s-1

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Active galactic nuclei (AGN) are some of the most powerful sources of energy in the universe. They are believed to be powered by the accretion of matter onto supermassive black holes at the centers of galaxies. Seyfert galaxies are a type of AGN that emit strong radiation in the optical and X-ray parts of the spectrum.

The energy source for Seyfert nuclei is believed to be compact due to the extreme conditions near the black hole. As matter falls towards the black hole, it is heated and compressed, releasing vast amounts of energy. This energy is then radiated away in the form of X-rays and other high-energy photons. The compact nature of the energy source allows for efficient radiation and high luminosity, making Seyfert nuclei some of the most powerful and intriguing objects in the universe.
The energy source for active nuclei like Seyferts is thought to be compact because the immense energy emitted from these galactic centers is concentrated within a relatively small region. This suggests that the energy-producing mechanism involves the accretion of matter onto a supermassive black hole, which causes the surrounding material to heat up and emit radiation. The compact nature of the energy source allows for the rapid variability observed in the luminosity of Seyferts, as changes in the accretion process can quickly affect the energy output. This compact energy source, combined with the presence of high-energy particles and the interaction of the nuclei with their environment, leads to the unique characteristics of Seyfert galaxies.

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Answer:

Height of resulting wave = 0.6 meters

Explanation:

Let the higher wave (wave crest) be A while the lower wave (wave trough) be B.

Given the following data;

A = 3.2m

B = 2.6m

To find the height of the resulting wave;

Height = A + B

But the lower wave becomes negative because it is below i.e on the lower trough.

Height = 3.2 + (-2.6)

Height = 3.2 - 2.6

Height of resulting wave = 0.6 meters

Answer:

With a pressure, for instance, of 4 atmospheres, and a volume of 5 liters yields 4 x 5 = 20. Divide the result by the number of moles of gas. If, for instance, the gas contains 2 moles of molecules: 20 / 2 = 10. Divide the result by the gas constant, which is 0.08206 L atm/mol K: 10 / 0.08206 = 121.86.

Answer:

The volume of the object is 3.5cm³

Answer:

So it's clear that Earth's hot iron core isn't what creates the magnetic field around our planet. ... On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet

Explanation: