a girl helps her younger brother swing at a playground. initially, the swing is 0.34 m from the ground. the girl pulls back on the swing until it reaches a height of 1.08 m from the ground, then she lets go. what is the maximum speed of her brother as he swings? (her brother sits passively in the swing.)

Answer:

A Venus Fly trap

Explanation:

Insectivorous plants like pitcher plant and venus fly trap snack on flies or insects.

Therefore, insectivorous plants like pitcher plant and venus fly trap snack on flies or insects.

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False, Fiber optic cable is thinner and lighter than unshielded twisted pair (UTP) cable.

Fiber optic cables are made up of strands of glass or plastic fibers that transmit data through light pulses. They are immune to electromagnetic interference and can transmit signals over longer distances than UTP cables, which are made up of copper wires.The content loaded Fiber optic cable is used in high-speed internet connections because it can transmit large amounts of data at very high speeds. Additionally, fiber optic cables are more secure than UTP cables because they are much more difficult to tap into without being detected. Therefore, the statement that fiber optic cable is thicker and heavier than UTP cable is false.

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Answer: Dispersion

Explanation:

Answer:A.

i know its a, i did quiz

Not volume or frequency, but wind, temperature, and humidity are factors. In a given medium, all sounds propagate at the same pace.

Sound is a vibration that travels through a medium as a mechanical wave. It is produced by a vibrating body. It can spread via a solid, a liquid, or a gas as the medium.

Sound is a form of energy created by vibrations. Air molecules nearby move as an item vibrates. These molecules collide with the molecules nearby, causing them to vibrate as well. They then collide with additional surrounding air molecules as a result.

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Answer:

\(118\; \rm Hz\).

Explanation:

The frequency \(f\) of a wave is equal to the number of wave cycles that go through a point on its path in unit time (where "unit time" is typically equal to one second.)

The wave in this question travels at a speed of \(v= 295\; \rm m\cdot s^{-1}\). In other words, the wave would have traveled \(295\; \rm m\) in each second. Consider a point on the path of this wave. If a peak was initially at that point, in one second that peak would be

How many wave cycles can fit into that \(295\; \rm m\)? The wavelength of this wave\(\lambda = 2.50\; \rm m\) gives the length of one wave cycle. Therefore:

\(\displaystyle \frac{295\;\rm m}{2.50\; \rm m} = 118\).

That is: there are \(118\) wave cycles in \(295\; \rm m\) of this wave.

On the other hand, Because that \(295\; \rm m\) of this wave goes through that point in each second, that \(118\) wave cycles will go through that point in the same amount of time. Hence, the frequency of this wave would be

Because one wave cycle per second is equivalent to one Hertz, the frequency of this wave can be written as:

\(f = 118\; \rm s^{-1} = 118\; \rm Hz\).

The calculations above can be expressed with the formula:

\(\displaystyle f = \frac{v}{\lambda}\),

where

Answer:

118

Explanation:

Answer:

A combinational logic circuit is a circuit whose outputs only depend on the current state of its inputs. In mathematical terms, the each output is a function of the inputs. These functions can be described using logic expressions, but is most often (at least initially) using truth tables.

1a) The total energy stored when all three weights are raised by 70 cm is 80.5 J.

1b) The height of the tank is 2 m.

2b) The potential energy is converted into kinetic energy when the water flows out of the taps 6.32 m/s.

3a) The mass of water that goes over the falls every second is 1 x 10⁶ kg.

3b) The gravitational potential energy of 1 kg of water at the top of the falls 1000 J.

3c) The speed of the water as it reaches the bottom if all the GPE stored in 1 kg of water is transferred to kinetic energy is 44.72 m/s.

3d) The water will not be falling as fast as the speed calculated in part c suggests because of the presence of air resistance and the fact that the water falls through a medium (air) which offers resistance to its motion.

3e) The energy transferred when the GPE stored in the water falling in one second is transferred to other energy stores is finally stored in thermal energy stores due to the heat generated by the water as it hits the bottom.

1a) To calculate the amount of energy stored in the three weights, we use the formula given below:

E = mgh

Where,E = Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

For the 4.5 kg weight:

E = 4.5 x 10 x 0.7 = 31.5 J

For each of the 3.5 kg weight:

E = 3.5 x 10 x 0.7 = 24.5 J

Thus, the total energy stored when all three weights are raised by 70 cm is:

31.5 J + 24.5 J + 24.5 J = 80.5 J

1b) To calculate how far the 4.5 kg weight must be lifted to store 45 J of energy, we use the formula:

E = mghh = E/mg = 45 / (4.5 x 10) = 1 m2a)

To calculate the gravitational potential energy stored in the water in the tank when it is full, we use the formula given below:

E = mgh

Where,E = Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

The mass of 1 litre of water is 1 kg and the tank can hold 200 litres of water. Therefore, the total mass of water in the tank is:

Mass = 200 kg

The height of the tank is 2 m.

Therefore, the gravitational potential energy stored in the water in the tank is:

E = mgh = 200 x 10 x 2 = 4000 J

Assumptions made in the answer:

We have assumed that the tank is full.

2b) To calculate the speed at which the water would come out of the bathroom and kitchen taps, we use the formula given below:

PE = KEPE = mghKE = 1/2mv²

Where,PE = Potential Energy (Joules)

KE = Kinetic Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

v = Velocity (m/s)

Assuming that the potential energy of the water in the tank is converted into kinetic energy when the water flows out of the taps, the potential energy stored in the water in the tank is given by:

PE = mgh = 200 x 10 x 2 = 4000 J

The potential energy is converted into kinetic energy when the water flows out of the taps.

Therefore, KE = 1/2mv²v² = 2KE/mv² = 2(4000)/200 = 40 m²/s²v = √(40) = 6.32 m/s (speed of the water coming out of the taps)

3a) To calculate the mass of water that goes over the falls every second, we use the formula given below:

Mass = Volume x Density

Where,Volume = 1000 m³/s, Density = 1000 kg/m³, Mass = 1000 x 1000 = 1000000 kg = 1 x 10⁶ kg

3b) To calculate the gravitational potential energy of 1 kg of water at the top of the falls, we use the formula:

E = mgh

Where,m = 1 kg, g = 10 N/kg, h = 100 m, E = 1 x 10 x 100 = 1000 J

3c) To calculate the speed of the water as it reaches the bottom if all the GPE stored in 1 kg of water is transferred to kinetic energy, we use the formula given below:

PE = KEP

E = mgh

KE = 1/2mv²

Where,PE = Potential Energy (Joules)

KE = Kinetic Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

v = Velocity (m/s)

Assuming that all the potential energy is converted into kinetic energy when the water reaches the bottom,

PE = KEKE = mghv² = 2mghv² = 2(1)(10)(100)v² = 2000v = √(2000) = 44.72 m/s

3d) The water will not be falling as fast as the speed calculated in part c suggests because of the presence of air resistance and the fact that the water falls through a medium (air) which offers resistance to its motion.

3e) To calculate the total energy transferred per second as the GPE stored in the water falling in one second is transferred to other energy stores, we use the formula given below:

Power = Energy / Time

Where,Power = 1 x 10⁶ x 10 x 100 = 1 x 10⁹ W = 1 GW (assuming that 1 m³ of water falls every second)3f)

The energy transferred when the GPE stored in the water falling in one second is transferred to other energy stores is finally stored in thermal energy stores due to the heat generated by the water as it hits the bottom.

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Answer:

XZXDHF

Explanation:ZDHF

Ballistics is the study of projectile propulsion, flight, and impact. It is separated into a number of disciplines. The subjects of internal and external ballistics, respectively, are projectile propulsion and flight.

Intermediate ballistics refers to the phase that exists between these two regimes. Ballistics is the study of how projectiles are fired, how they fly, and how they strike a target. It is frequently related to rockets, guided missiles, and projectiles launched from weapons.

The word "ballistic" refers to how an object travels through space. Typically, it refers to projectiles fired by weapons, such as bullets or rockets. Get out of the way if a ballistic missile is headed your way! A ballistic missile is only guided during its initial launch.

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The centripetal acceleration experienced by an object moving in a circle is given by the formula:

a = v²/r

where a is the centripetal acceleration, v is the speed of the object, and r is the radius of the circle.

In this problem, we are given that the object has a mass of 20 g, which we need to convert to kilograms:

m = 20 g = 0.02 kg

We are also given that the object is moving in a horizontal circle of radius 250 cm at a speed of 50 cm/s. We need to convert these measurements to SI units (meters and seconds) to use the formula for centripetal acceleration:

r = 250 cm = 2.5 m

v = 50 cm/s = 0.5 m/s

Now we can calculate the centripetal acceleration:

a = v²/r = (0.5 m/s)² / 2.5 m = 0.1 m/s²

Therefore, the centripetal acceleration experienced by the object is 0.1 m/s².

From the analysis, it can be concluded that planet A has the strongest gravitational field, followed by planet C, and planets B and D have the same gravitational field strength.

The gravitational force acting on various masses is measured on different planets. The table shows the measured values for the forces acting on the corresponding masses:Planet Force (N) Mass (kg)A 8.0 0.50B 30 3.0C 45 3.0D 60 6.0

Method for comparing the gravitational field strengths on the different planets:First, we can use the formula for calculating gravitational force: \(`F = G (m_1m_2 / r^2)`\)where G is the universal gravitational constant `\(6.67 * 10^{-11 }Nm^2/kg^2\), m1 and m2 are the masses of the two objects in kg, and r is the distance between the centers of the objects in meters.

We know that the force is proportional to mass (F = ma). So we can calculate the acceleration due to gravity (g) on each planet by dividing the force by the mass. Therefore, we can use the formula: `g = F / m`.

Comparing the gravitational field strengths on the different planets:We will calculate the acceleration due to gravity (g) on each planet.

For planet A: `

g = F / m

= 8.0 N / 0.50 kg

= 16 \(m/s^2\)`

For planet B: `g = F / m

= 30 N / 3.0 kg

= 10 \(m/s^2\)

For planet C: `g = F / m

= 45 N / 3.0 kg

= 15 \(m/s^2\)

For planet D: `g = F / m

= 60 N / 6.0 kg

= 10 \(m/s^2\)

`So we see that planet A has the strongest gravitational field, followed by planet C, then planet B and planet D have the same gravitational field strength.

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Domestic operations fall under several mission areas, including Homeland Security, Critical Infrastructure Protection, and Community Resilience.

The Homeland Security mission area involves activities that are undertaken to protect the United States and its territories from threats, both foreign and domestic. This includes preventing and responding to terrorist attacks, securing the border, and protecting critical infrastructure. Domestic operations can be an important component of this mission area, as they may involve working with state and local law enforcement agencies to prevent and respond to potential threats.

Critical Infrastructure Protection focuses on safeguarding the essential systems and assets that are necessary for the functioning of our society. These can include everything from power plants and water treatment facilities to financial institutions and transportation networks. Domestic operations may be employed to help ensure the safety and security of these critical assets, through activities such as surveillance, intelligence gathering, and emergency response planning.

Finally, the Community Resilience mission area is concerned with promoting the ability of communities to withstand and recover from all types of hazards and disasters. Domestic operations can play a key role in achieving this goal, by working with local officials and community leaders to develop and implement effective emergency response plans, coordinate resources, and provide support to those in need during times of crisis.

Overall, domestic operations can be an important component of several different mission areas, all of which are focused on ensuring the safety and security of the United States and its citizens. By working together with federal, state, and local partners, these operations can help to mitigate threats, protect critical infrastructure, and promote community resilience in the face of any challenges that may arise.

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Answer:

Put water at room temperature into a vacuum chamber and begin removing the air. Eventually, the boiling temperature will fall below the water temperature and boiling will begin without heating. Or if you want to be easy but messy, add dry ice to a bowl of water and watch how the water starts to boil.

Answer:

Explanation:Force applied by atmosphere = atmospheric pressure × ares of table

F=P×A

F=1.013×\(10^{5}\) ×(2×1)=2.026×\(10^{5}\)N

Given,

We need to find,

Using Newton's first law of motion .

➵ 25.1 = Mass × 3.4

➵ 25.1 ÷ 3.4 = Mass

➵ Mass = 7.38 kg

A.  A downward force of magnitude 5 N is exerted on the book by the force of gravity.

B. An upward force of magnitude 5 N is exerted on the book by the table.

C. The reaction to the force in Part B is a force of magnitude 5 N, exerted on the table by the book. Its direction is downward.

According to Newton's third law of motion, the book exerts a force of 5 N on the table in a downward direction, and the table exerts an equal and opposite force of 5 N on the book in an upward direction. The upward force exerted by the table on the book is also 5 N, since the two forces are equal in magnitude and opposite in direction.

The reaction to the upward force exerted by the table on the book is a force of 5 N exerted by the book on the table in a downward direction, again in accordance with Newton's third law. The direction of this force is opposite to that of the upward force exerted by the table on the book.

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--The complete question is, A book weighing 5 N rests on top of a table.

A. A downward force of magnitude 5 N is exerted on the book by the force of

B. An upward force of magnitude _____ is exerted on the _____ by the table.

C. The reaction to the force in Part A is a force of magnitude _____, exerted on the _____ by the _____. Its direction is _____.--

Soil is a material composed of five ingredients — minerals, soil organic matter, living organisms, gas, and water. Soil minerals are divided into three size classes — clay, silt, and sand (Figure 1); the percentages of particles in these size classes is called soil texture.Soil contains air, water, and minerals as well as plant and animal matter, both living and dead. These soil components fall into two categories. ... Other, less common minerals include calcium, magnesium, and sulfur. The biotic and abiotic factors in the soil are what make up the soil's composition.

The cork leaves the spring at a speed of 3.02 m/s.

We can use the conservation of energy to determine the speed at which the cork leaves the spring.

The initial potential energy stored in the spring is converted to the kinetic energy of the cork as it leaves the spring. Neglecting air resistance, the conservation of energy equation is:

(1/2) k x^2 = (1/2) m v^2

where k is the spring constant, x is the distance the spring is compressed, m is the mass of the cork, and v is the speed of the cork as it leaves the spring.

Substituting the given values:

(1/2) * 18 N/m * (7.47 cm / 100 cm/m)^2 = (1/2) * 0.009 kg * v^2

Solving for v:

v^2 = (18 N/m * (7.47 cm / 100 cm/m)^2) / 0.009 kg

v^2 = 9.119 m^2/s^2

Taking the square root of both sides:

v = 3.02 m/s

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The decay constant λ, we can substitute them into the equation along with the mass of a 14 6C atom (ma)  The value of t = -(mc/λ) * ln(9.25 * ma / (λ * r * mc))

To find the age of the artifact, we can use the equation for the decay of radioactive isotopes:

A = A0 * e^(-λt)

where A is the activity of the sample at the present time, A0 is the initial activity (when the artifact was created), λ is the decay constant, and t is the age of the artifact.

Given that the present activity of the artifact is 9.25 decays/s, we can substitute A with 9.25 in the equation. However, we need to express the decay constant in terms of the ratio of the mass of 14 6C to the total mass of carbon in the atmosphere (r) and the mass (ma) of a 14 6C atom.

The total mass of carbon in the artifact (mc) is given as 0.100 kg, and the ratio of 14 6C to total carbon in the atmosphere (r) is given as 1.2.

Let's assume the number of 14 6C atoms in the artifact when it was created was N0. Since the ratio of the mass of 14 6C to total carbon in the atmosphere is the same at present and when the artifact was created, we have:

(ma * N0) / mc = r

Solving for N0, we get:

N0 = (r * mc) / ma

Now we can rewrite the decay equation as:

A = A0 * e^(-(λ/mc) * t)

Substituting A0 with λ * N0, we have:

9.25 = (λ * N0) * e^(-(λ/mc) * t)

Substituting N0 with (r * mc) / ma, we get:

9.25 = (λ * (r * mc) / ma) * e^(-(λ/mc) * t)

Simplifying the equation, we find:

t = -(mc/λ) * ln(9.25 * ma / (λ * r * mc))

Given the values of mc = 0.100 kg, r = 1.2, and the decay constant λ, you can substitute them into the equation along with the mass of a 14 6C atom (ma) to find the age of the artifact (t).

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Answer:

Get out if the car

Explanation:

Get out of the car because the car could explode by over eclectic power

get out of the car as fast as possible

Answer:

Is this science you are talking about

Explanation:

The average power developed by the boy during the climb is approximately 29.4 W.

In physics, the amount of energy transferred or converted per unit time is called power.

total height = number of steps x height of each step

total height = 30 x 0.15 m = 4.5 m

Given, time = 60 s

As power = work done / time

work done = force x distance

force = mass x gravity

mass is boy's mass (40 kg) and gravity is acceleration due to gravity (9.81 m/s²).

force = 40 kg x 9.81 m/s² = 392.4 N

The distance that the boy moves is equal to the total height that he has climbed: distance = total height = 4.5 m

work done = force x distance

work done = 392.4 N x 4.5 m = 1765.8 J

power = work done / time

power = 1765.8 J / 60 s

power ≈ 29.4 W

Therefore, the average power developed by the boy during the climb is approximately 29.4 W.

As for the anomalous behavior of water, water has a higher boiling point and melting point as compared to other substances with similar molecular weight. This is due to the strong hydrogen bonding between water molecules, which requires more energy to break the bonds and change the state of water from solid to liquid to gas.

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Answer: The speed of the wave appears to be constant. This is because the speed of sound depends only on the properties of the medium, and the medium is the same.

Explanation: The answer is from edmentum. Just letting you know on what not to copy and paste. Change it up.

Answer:

lol b b b b b and b

Explanation:

duuuh its b

The magnitude and direction of the force that the magnetic field of the current exerts on the electron in a a long, straight wire is 1.96 x 10⁻¹⁸ N and direction of the force is opposite to the direction of the current.

The magnetic field of the current exerts a force on the electron of magnitude 6.072 x 10⁻¹³ N in a direction that is opposite to the direction of the current.

where

Current, I = 8.60 A

Distance of electron from wire, r = 4.50 cm = 0.045 m

Velocity of electron, v = 6.00 x 10^4 m/s

The force on the electron due to magnetic field of current-carrying wire is given by:

F = (μ * I * q) / (2 * π * r)

where μ is the magnetic permeability of free space and is equal to 4π x 10⁻⁷ Tm/A,

q is the charge of electron and is equal to -1.6 x 10⁻¹⁹ C, and

r is the distance between the electron and the wire.

Substituting the values, we get:

F = (4π x 10⁻⁷ Tm/A) * (8.60 A) * (-1.6 x 10⁻¹⁹ C) / (2 * π * 0.045 m)

F = -1.96 x 10⁻¹⁸ N.

The negative sign indicates that the direction of force is opposite to the direction of the current.

So, the magnitude of the force exerted by the magnetic field on the electron is 1.96 x 10⁻¹⁸ N, and the direction of the force is opposite to the direction of the current.

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By the vector, the force in the y component is  -16.18 newtons.

We need to know about vectors to solve this problem. Vector has magnitude and also direction. Force is included in the vector. It can be written as

F = Fx i + Fy j + Fz k

where s is displacement, Fx is force on x-axis, Fy is displacement on y-axis and Fz is displacement on z-axis.

From the question above, we know that

|F| = 232 N

θ = 184⁰

The force on y-axis is

Fy = |F| . sin(θ)

Fy = 232 . sin(184)

Fy = -16.18 newtons

The negative force is caused by the direction of the force.

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Answer:

Friction of the road on the motorcycle in the opposite direction

Explanation:

khan academy

Answer:

velocity= 135m/s

Explanation:

velocity = 300×0.45

= 135m/s²

Answer:

Crust

Explanation: