the difference between the frequency f and the frequency ω is that f is measured in cycles per second or hertz (abbreviated hz ) whereas the units for ω are __________ per second.

Answer:

stars #3

Explanation:

they didn't know it was stars

The work required is Wa = 2954112 J

Given:

swimming pool diameter = 14 m

length of sides = 4 m

height of water = 3 m

To Find:

work required to pump water

Solution: The radius of the swimming pool is

r = 14/2 = 7 m

The work is mathematically given as

W = Force x distance

Now force is mathematically given as

F = density x area x height of pool = p*(πr²)dx

Now the work done to pump all of the water over the side

W = ∫p*(πr²)(H-x)dx = ∫1000*9.81*(π*7^2)(4-x)dx

W = 64000*9.8π∫(4-x) dx = 64000*9.8π{4(3) - 3/2}

W = 2954112 J

So, work required is Wa = 2954112 J

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Answer:

False

Explanation:

There are indeed more than just one way to modify behaviour .

Answer:

4 atoms of aluminum are on the left side on the equation and 2 atoms of aluminum are on the right side on the equation.

Explanation:

Answer:

both sides have 4 atoms

Explanation:

the first side 4Al has 4 atoms and the second one 2Al2 has 4 atoms because 2 was multiplied by the 2 near l.

Answer:

False

Explanation:

The formula of force that exists between two charges is expressed as;

F = kq1q2/r²

If two charges separated by one meter exert a 9 N force on each other, the;

9 = kq1q2/1²

9 = kq1q2 ..... 1

If the charges are pushed to a 3 meter separation, then;

F =  kq1q2/3²

F =  kq1q2/9 .... 2

Divide both equations;

9/F = (kq1q2)/ kq1q2/9

9/F =  kq1q2 * 9/ kq1q2

9/F = 9

F = 9/9

F = 1N

Hence if the charges are pushed to a 3 meter separation, then the force on EACH charge will be 1N. Hence the answer is False

Answer:

A

Explanation:

Answer:

E = h ν        energy of electromagnetic particle  

(b)   has the greater frequency

In a mass spectrometer, the velocity selector uses a combination of electric and magnetic fields to select particles with a specific velocity. The velocity selector ensures that only particles with a particular speed enter the spectrometer.

To determine the electric field strength needed to select a speed of 4·106 ms in a 0.11 t magnetic field, we can use the formula for the velocity selector:

v = E/B

where v is the velocity of the particle, E is the electric field strength, and B is the magnetic field strength.

Rearranging the formula, we get:

E = vB

Plugging in the given values, we get:

E = (4·106 ms)(0.11 t)

Converting t to kg (1 t = 1000 kg), we get:

E = (4·106 ms)(0.11)(1000 kg)

Simplifying, we get:

E = 440 V/m

Therefore, the electric field strength needed to select a speed of 4·106 ms in a 0.11 t magnetic field is 440 V/m.
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Answer:

v= 50 m/s

λ(wavelength)= 12.5 m

Explanation:

1.

The formula that relates these three quantities is:

v = f * λ

This means that the wave velocity is equal to the product of the frequency and the wavelength. The wavelength is the distance between two consecutive crests or troughs of a wave. The frequency is the number of waves that pass a fixed point in one second.

If we are given the initial wave velocity and frequency, we can find the initial wavelength by rearranging the formula:

λ = v / f

Plugging in the given values, we get:

λ = 50 / 2 λ = 25 m

This means that the initial wavelength of the wave on the slinky is 25 m.

If we shake the slinky at different frequencies, we can measure the wave velocity and plot it against the frequency. To find the wave velocity for each frequency, we can use the same formula:

v = f * λ

However, since the wavelength will change as we change the frequency, we need to measure it for each frequency as well. For example, if we shake the slinky at 4 Hz, and measure the wavelength as 12.5 m, then the wave velocity is:

v = 4 * 12.5 v = 50 m/s

We can repeat this process for different frequencies and wavelengths, and plot the points on a graph. The graph should show a linear relationship between v and f, with a slope equal to λ. The graph should look something like this:

graph of v vs f

The graph shows that as the frequency increases, so does the wave velocity, and vice versa. The wavelength is constant for each point, and it is equal to the slope of the line. For example: at f = 2 Hz, v = 50 m/s, and λ = 25 m. At f = 4 Hz, v = 50 m/s, and λ = 12.5 m. At f = 6 Hz, v = 75 m/s, and λ = 12.5 m.

(graph in the attachment)

2.

The formula that relates these three quantities is:

v = f * λ

This means that the wave velocity is equal to the product of the frequency and the wavelength. The wave velocity is the speed at which the wave travels along the slinky. The wavelength is the distance between two consecutive crests or troughs of a wave. The frequency is the number of waves that pass a fixed point in one second.

If we are given the initial wave velocity and we shake the slinky at different frequencies, we can measure the wavelength and plot it against the frequency. To find the wavelength for each frequency, we can rearrange the formula:

λ = v / f

Plugging in the given value of v and different values of f, we can find λ. For example, if we shake the slinky at 2 Hz, then the wavelength is:

λ = 50 / 2 λ = 25 m

If we shake the slinky at 4 Hz, then the wavelength is:

λ = 50 / 4 λ = 12.5 m

We can repeat this process for different frequencies and wavelengths, and plot the points on a graph. The graph should show an inverse relationship between λ and f, with a constant value of v. The graph should look something like this:

graph of λ vs f

The graph shows that as the frequency increases, the wavelength decreases, and vice versa. The wave velocity is constant for each point, and it is equal to the product of λ and f. For example, at f = 2 Hz, λ = 25 m, and v = 50 m/s. At f = 4 Hz, λ = 12.5 m, and v = 50 m/s. At f = 6 Hz, λ = 8.33 m, and v = 50 m/s.

(graph in the attachment)

The deceleration of the body is -1 m/s^2, the distance between X and M is 200m, and the time taken by the body to move from X to M is 20 seconds.

Kinematic equations are a set of mathematical equations used to describe the motion of an object in terms of its displacement, velocity, and acceleration, given certain initial conditions.

To solve this problem, we can use the following kinematic equations of motion:

v = u + at

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

v^2 = u^2 + 2as

Where:

u = initial velocity

v = final velocity

a = acceleration or deceleration

t = time taken

s = distance covered

i) To find the deceleration of the body:

From the first equation, we have:

v = u + at

20 = 40 + a(20)

a = (20-40)/20 = -1 m/s^2

Therefore, the deceleration of the body is -1 m/s^2.

ii) To find the distance between X and M:

We know that the total distance covered from P to M is:

s = 200m + distance between X and M

When the body is at rest at point M, we can use the third equation:

v^2 = u^2 + 2as

Since the body is brought to rest, the final velocity is zero:

0 = 20^2 + 2(-1)s

s = 200 m

Therefore, the distance between X and M is 200m.

iii) To find the time taken by the body to move from X to M:

From the second equation, we have:

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

Since the initial velocity is 20m/s and the final velocity is zero, we have:

s = (1/2)at^2

200 = (1/2)(-1)t^2

t^2 = 400

t = 20 seconds

So, the time taken by the body to move from X to M is 20 seconds.

Therefore, 200 meters separate X and M, the body is decelerating at -1 m/s^2, and it takes the body 20 seconds to get from X to M.

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The electric force between the comb and balloon changes as they are brought closer together the electric force increases, this is because the electric force is directly proportional to the distance between the two objects (the comb and the balloon).

As the distance between the two objects decreases, the electric force increases exponentially, the closer the two objects are brought together, the stronger the electric force becomes. The electric force between the comb and balloon is caused by the presence of static electricity. Static electricity is the buildup of electrical charges on the surface of an object. The buildup of charges is caused by the transfer of electrons from one object to another. When two objects come into contact with each other, there is a transfer of electrons between the two objects.

The object that loses electrons becomes positively charged, while the object that gains electrons becomes negatively charged.As a result of the transfer of electrons, one object becomes positively charged and the other becomes negatively charged. The opposite charges attract each other, causing the electric force between the two objects. Therefore, the electric force between the comb and balloon increases as they are brought closer together.

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The energy conservation that occurred in the circuit when a 12 V battery is connected to a resistor, a light bulb, and a buzzer is light energy (light bulb) and to sound energy (buzzer).

The principle of energy conservation states that energy can neither be created nor destroyed but can be transferred from one form to another.

When a 12 V battery is connected to a resistor, a light bulb, and a buzzer, the energy conservation that occur in the circuit is light energy (light bulb) and to sound energy (buzzer).

Thus, the energy conservation that occurred in the circuit when a 12 V battery is connected to a resistor, a light bulb, and a buzzer is light energy (light bulb) and to sound energy (buzzer).

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Yes carbon dioxide is needed for photosynthesis while cellular respiration needs oxygen and dispurses carbon dioxide

Answer:

F = 9.177*10^-9N

Explanation:

Gravitational force between the two bodies is expressed as;

F = GMm/r²

Given tha

M = 55kg

m = 10kg

r = 2m

G = 6.67408 × 10-11 m³ kg-1 s-2

Substitute;

F = GMm/r²

F = 6.67408 × 10-11*55*10/2²

F = 3,670.744× 10-11/4

F = 9.177*10^-9N

Answer:

B

Explanation:

The writers are from a trusted source that is considered impartial. The message is backed up by scientific investigation, and the writers have no monetary gain from their message.

Heat transfer that occurs through liquids and gases is called Convection.

Heat transfer is the exchange of thermal energy between physical systems. It occurs when there is a temperature difference between two objects or regions of space, causing heat to flow from the hotter system to the cooler one. There are three modes of heat transfer: conduction, convection, and radiation.

Conduction is the transfer of heat through a material by direct contact. In this mode, heat flows from a region of higher temperature to a region of lower temperature. Convection is the transfer of heat through a fluid (liquid or gas) by the movement of the fluid itself. This mode of heat transfer occurs through convection currents, where hot fluids rise and cooler fluids sink.

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Answer:

The height balls rise above the collision point, is approximately 7.37 meters

Explanation:

The given parameters just before the collision are;

The mass, m₁ and velocity, v₁ of the ball moving upward are;

m₁ = 3.0 kg, v₁ = 22 m/s

The mass, m₂ and velocity, v₂ of the ball moving downward are;

m₂ = 1.3 kg, v₂ = -11 m/s (downward motion)

The type of collision = Inelastic collision

We note that the momentum is conserved for inelastic collision

Let, \(v_f\), represent the final velocity of the balls after collision, we have;

∴ Total initial momentum = Total final momentum

m₁·v₁ + m₂·v₂ = (m₁ + m₂)·\(v_f\)

Therefore, we get;

m₁·v₁ + m₂·v₂ = 3.0 kg × 22 m/s + 1.3 kg × (-11) m/s = 51.7 kg·m/s

(m₁ + m₂)·\(v_f\) = (3.0 kg + 1.3 kg) ×

∴ 51.7 kg·m/s = 4.3 kg × \(v_f\)

\(v_f\) = (51.7 kg·m/s)/4.3 kg ≈ 12.023 m/s

The final velocity, \(v_f\) ≈ 12.023 m/s

The maximum height, h, the combined balls will rise from the point of collision, moving upward at a velocity of \(v_f\) ≈ 12.023 m/s, is given from the kinetic equation of motion, v² = u² - 2·g·h, as found follows

At maximum height, we have;

\(h_{max} = \dfrac{v_f^2}{2 \cdot g }\)

Therefore;

\(h_{max} \approx \dfrac{12.023^2}{2 \times 9.81 } \approx 7.37\)

The height the combined two balls of putty rise above the collision point, \(h_{max}\) ≈ 7.37 m.

Answer:

∆y=30m

Vi=10m/s

a=9.8

Vf=?

(1)Vf²=Vi²+2a∆y

Vf²=(10)²+2(9.8)(30)

Vf²=100+588

Vf²=688

√Vf²=√688

Vf= 26,23

(2) Vf=Vi+a∆t

26,23=10+9,8∆t

16,23=9,8∆t

∆t=1,66 sec

Another key factor that determines a star's colour is its temperature. As stars become hotter, the overall radiated energy increases, and the peak of the curve changes to shorter wavelengths. To put it another way, when a star heats up, the light it produces moves toward the blue end of the spectrum.

It is determined by the nature of the green light. Because lasers create light at almost a single frequency, green laser light would appear as a thin line of pure green. Other sources of "green" light emit light at a variety of frequencies, including yellow and blue, resulting in a strong green band in the center that fades into blue-green and yellow-green at the borders.

For example, here’s a graph of the spectrum of a green LED, showing the color range: Attachment #1

and here’s a graph of the transmission spectra of several standard photographic filters, including green: Attachment #2

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→ The tension on the cable is 890 N.

The free body diagram is drawed below. Applying the second law of newton:

(you have to transpose the T forces to the 'y' axis). After that:

\(\Large \text {$2Tcos(60) = 89 \times 10$}\)

89 x 10 is the Weight Gravitational force (Mass times gravity). Therefore:

\(\Large \text {$T = 890$ N}\)

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The exiting electron has an energy of 6.03 x 10⁻¹⁹J

The photoelectric effect is the emission of electrons while electromagnetic radiation, which includes light, hits a material. Electrons emitted in this way are referred to as photoelectrons.

In keeping with the well-known Einstein explanation of the photoelectric impact: The electricity of the photon could be sum total of electricity needed to put off the electron and kinetic energy of the emitted electron. consequently h nu= W + E.

The photoelectric effect is the manner wherein the electricity from electromagnetic radiation, together with visible light, gamma radiation or different hits an atomic electron wherein the power of the radiation is transferred in its entirety to the electron causing the electron to be ejected from the atom.

Calculation:-

KE =  hv - work function

    = 6.626 × 10⁻³⁴ ×1.8 x 10¹⁵ - 5.9 x 10⁻¹⁹

    = 11.93 x 10⁻¹⁹ -  5.9 x 10⁻¹⁹

    = 6.03 x 10⁻¹⁹ J

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Answer:

c because

Explanation:

Plants and trees couldn't thrive without capillary action. Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it's way all the way up to the branches and leaves.

Answer:

option C

Explanation:

So option C is correct

1. Pressure = Force/Area

When a ballon is pressed against many pins then the area is increased as compared to when it is pressed against a single pin. The force by which the balloon is pressed remains the same. Less the area, more the pressure. So, the balloon pops when it is pressed against one pin.

2. The candle goes off when covered with a glass because for burning the candle need oxygen. When glass on placed on the candle then the oxygen supply is stopped. So, when available oxygen is finished, the candle goes off. Water rises in the glass, because when the candle is burning, it expands the air inside the glass due to its heat. But when candle wents off, the air is cooled again and it contracts. So, a vacuum is created. That's why the water rises in the glass to fill the vacuum and to balance the air pressure inside and outside the glass.

3. Objects tend to maintain their state of motion or rest unless subjected to an external force. This property is called Inertia. More the mass more the inertia. When sudden brakes are applied, then our body still tends to remain in motion. That's why our body go forward.

negotiation.

SANA MAKATULONG.

In the conflict resolution, promotes competition a win-lose outcome. Competition results into conflict when two parties tend to seek control over a situation.

Competition results when one's own needs are advocated over the needs and requirements of others. It relies on an aggressive style of communication, which is of low regard for future relationships, and the exercise of coercive power. Those who are using a competitive style tend to seek control over a situation, in both the substance and ground rules.

There are times, when competition between two individuals can escalate into an unproductive, and dangerous conflict. The danger can range from unproductive behavior of a person to unethical behavior which could include physical attack. This results into a win-lose outcome.

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The given problem can be exemplified in the following diagram:

The weight of the bar is concentrated in its center of mass which is located in the middle of the longitude of the bar. We can add the total torques at the point where the pivot touches the bar and we get:

Here we have used momentum counter-clockwise as positive. Since the system is in equilibrium the sum of the torques must be equal to zero:

Now we solve the operations, we will use for the acceleration of gravity 9.8 meters per second squared:

Now we solve for the mass "M" first by subtracting 88.2Nm from both sides:

Now we divide both sides by -1.96:

Solving the operations we get:

Therefore, the mass of the bar is 45 kg.

There are roughly \(10^{26\) photons in a beam of light with an energy of 100 J and a wavelength of 300 nm.

To calculate the approximate number of photons in a beam of light, we can use the equation relating energy (E) to the frequency (f) or wavelength (λ) of a photon:

E = hf = hc/λ

Where:

Given the energy of the beam of light (Ebeam = 100 J) and the wavelength (λ = 300 nm = 300 x \(10^{-9\) m), we can rearrange the equation to solve for the number of photons (N):

N = Ebeam / E

Let's calculate the number of photons using the given values:

E = hc / λ

 ≈ (\(10^{-33\) J.s) * (3 x \(10^8\) m/s) / (300 x \(10^{-9\) m)

≈ \(10^{-33\) J.s * \(10^9\) / 3

≈ \(10^{-24\) J

N = Ebeam / E

   = 100 J /  \(10^{-24\) J

  ≈ \(10^{26\) photons

Therefore, there are roughly \(10^{26\) photons in a beam of light with an energy of 100 J and a wavelength of 300 nm.

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Answer:

v = 100 [km/h]

Explanation:

To solve this problem we must identify that the movement is at constant speed, that is, there is no acceleration, therefore we must use the following expression for Speed, which relates is displacement with time.

v = d/t

where:

v = velocity [km/h]

d = displacement = 70 [km]

t  = time = 0.7 [h]

v = 70/0.7 = 100 [km/h]

Pulley efficiency is 60%. This means that 40% of his energy is lost due to friction within the machine.

The efficiency of a machine is the ratio of the work the machine does to the load and the effort it does to the machine. Hence, it is the ratio of useful work done by the machine's output to the work done by the machine's input.

Leaving aside energy losses due to friction for a moment, the work done by a simple machine is the same work that the machine does to perform a particular task.

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