a particular type of fundamental particle decays by transforming into an electron e- and a positron e . suppose the decaying particle is at rest in a uniform magnetic field of magnitude 2.16 mt and the e- and e move away from the decay point in paths lying in a plane perpendicular to vector b. how long after decay do the e- and e collide?

Using observations of the atomic hydrogen 21 cm line rotation curves of spiral galaxies determined beyond radii where starlight can be detected.

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Answer:

The train would be moving 47,250 mph

Athletes are asked to immediately squat to a depth of their choosing and then jump as high as they can in the Countermovement Jump (CMJ), a vertical jump test.

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Answer: make objective observations.

Explanation:

Answer: Objective Observations

Explanation: The first step in the Scientific Method is to make objective observations. These observations are based on specific events that have already happened and can be verified by others as true or false.

The three types of equilibrium in an object are;  stable, unstable, or neutral equilibrium.

The term equilibrium refers to a situation in which all the forces acting on an object are balanced such that the object does not move. The question is incomplete as the images are missing.

There are three types of equilibrium:

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When an object standing on the floor is tipped, the height of its center of gravity (cg) for each case as stable, unstable, or neutral may increase, decreased and remain same respectively.

Equilibrium is the location of the body, in which the body be static or in motion and does not change it with respect to time.

The equilibrium of an object can be classified in the 3 following types.

When an object standing on the floor is tipped, the height of its center of gravity (cg) may or may not change.

The stability of object demands in the center of gravity. Lower the value of CG, results in more stable object. For each case,

Thus, when an object standing on the floor is tipped, the height of its center of gravity (cg) for each case as stable, unstable, or neutral may increase, decreased and remain same respectively.

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According to the information, we can infer that the correct sentence is: A mosquito flying with a velocity of 5 m/s (option C).

Momentum is a term that refers to a physical property of moving objects. Momentum is a measure of the amount of motion a moving object has and is related to the mass and velocity of the object.

Based on the above, we can infer that the correct option is correct because the fly would have more momentum than the other objects because its mass is less W

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Answer: west

Explanation: the sunset always sets in the west.

False. The phrase "riding off into the sunset" is a common expression often used in literature and film to symbolize a character's departure or journey toward a new adventure or unknown future.

While it is a poetic and metaphorical image, it doesn't necessarily indicate the direction of travel. In reality, the direction in which someone is traveling when riding into the sunset could be any direction, depending on their starting point and the specific circumstances of the scene.

Sunsets occur in the western part of the sky, which is why the phrase has become associated with that direction. However, it is important to note that the phrase itself does not provide a definitive indication of the direction in which the character is traveling. It is a literary device used to evoke a sense of closure, transition, or even mystery, rather than to convey a specific compass direction. Therefore, the statement is false, as "riding off into the sunset" does not necessarily mean traveling west.

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A circuit breaker can open if you plug too many electrical devices into a single circuit because this overloads the circuit and can cause it to draw too much current.

A circuit breaker is an electrical protection gadget that automatically shuts off the flow of electricity when a circuit is overloaded or when a short circuit occurs. They are meant to protect an electrical circuit from damage caused by excessive current or short circuit, which could cause a fire.

Too many electrical devices plugged into a single circuit leads to a high electrical load. This causes the circuit breaker to trip, cutting off the power and preventing potential electrical damage or fire. To prevent this, make sure to limit the number of devices plugged into a single circuit and check your circuit breaker box for the recommended circuit capacity.

Hence, A circuit breaker can open if you plug too many electrical devices into a single circuit because this overloads the circuit and can cause it to draw too much current.

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Answer:

Image result for What is meant by a 'closed system'?

A closed system is a physical system that does not allow transfer of matter in or out of the system, though, in different contexts, such as physics, chemistry or engineering, the transfer of energy

Explanation:

Answer:

A closed system is a physical system that does not allow transfer of matter in or out of the system, though, in different contexts, such as physics, chemistry or engineering, the transfer of energy is or is not allowed

Explanation:

The statement "The government (FCC) regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication" is true.

The government, specifically the Federal Communications Commission (FCC) in the United States, regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication.

The electromagnetic spectrum encompasses a wide range of frequencies, from radio waves to microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The FCC allocates and manages these frequencies to ensure efficient and coordinated use of the spectrum by various wireless communication devices, including cell phones, Wi-Fi routers, radios, and other wireless technologies.

By regulating the spectrum, the FCC aims to prevent interference between different wireless devices and ensure reliable and secure communication. These regulations help in maintaining order, maximizing spectrum utilization, and promoting fair access to wireless communication resources.

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Complete question :

The government (FCC) regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication. T/F

The first three overtones of a tuba that is closed at one end and has a fundamental frequency of 60.0 Hz are 120.0 Hz, 180.0 Hz, and 240.0 Hz respectively.

When a wind instrument like the tuba is closed at one end, its fundamental frequency will be f = v/4L, where v is the velocity of sound in air and L is the length of the air column. The first overtone will be twice the fundamental frequency, the second overtone will be thrice the fundamental frequency, and so on.

So, the first three overtones can be calculated as follows:

fundamental frequency (f) = 60.0 Hz

first overtone (2f) = 120.0 Hz

second overtone (3f) = 180.0 Hz

third overtone (4f) = 240.0 Hz

Hence, the first three overtones of a tuba that is closed at one end and has a fundamental frequency of 60.0 Hz are 120.0 Hz, 180.0 Hz, and 240.0 Hz respectively.

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Answer:

The work of the force of friction can be calculated using the equation W = Fd, where W is the work, F is the force, and d is the distance. In this case, the force of friction is equal to the applied force of 10 N, and the distance is 6 m. Therefore, the work of the force of friction is 10 N x 6 m = 60 J.

Answer:

a

Explanation:

It is not possible for a graph to NOT change with the dependent variable never changing.

Answer:

4 N

Explanation:

mass = 2 kg

acceleration = 2 m/s^2

Force = mass * acceleration

         = 2 *2

         = 4 N

A harmonic oscillator is a system in quantum mechanics that vibrates back and forth with a specific frequency. It is one of the most important and fundamental systems in quantum mechanics. The system can be described in terms of wave functions and energies by solving the Schrödinger equation for the wave function. The wave function for a harmonic oscillator is given by the Hermite polynomials which are solutions to the Schrödinger equation.The wave propagator is a fundamental quantity in quantum mechanics that describes the evolution of a quantum state from one point in time to another. It is given by the time-evolution operator which is defined as U(t2,t1) = exp[-iH(t2-t1)/hbar], where H is the Hamiltonian of the system, t1 and t2 are the initial and final times, and hbar is the reduced Planck constant. The wave propagator can be used to calculate the probability amplitudes of various quantum states at different times.To find the wave propagator for a simple harmonic oscillator, we can use the fact that the Hamiltonian for a harmonic oscillator is given by H = (p^2/2m) + (1/2)mw^2x^2, where p is the momentum, m is the mass, w is the angular frequency, and x is the position. The time-evolution operator for the harmonic oscillator can then be written as U(t2,t1) = exp[-iH(t2-t1)/hbar] = exp[-i(p^2/2m)(t2-t1)/hbar]exp[-i(1/2)mw^2x^2(t2-t1)/hbar].

Quantum mechanics is the fundamental branch of physics used to describe atomic and subatomic systems. The concept of quantum mechanics is used to replace classical mechanics. Quantum mechanics is in a quantum superposition and so does not correspond to classical physics. Quantum mechanics states that electrons can be found in orbitals, but their positions cannot be found with certainty. The example is a car race, the atomic nucleus and negative charge is the middle of the circuit and also the pit stop in the middle.

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The average voltage generated in the moving conductor is 100,000 volts.

To calculate the average voltage generated in a moving conductor, we need to use Faraday's Law of Electromagnetic Induction. According to this law, the induced voltage in a conductor is proportional to the rate of change of magnetic flux linking the conductor. Here, we are given that the conductor cuts 2.5 x 106 maxwells in 1/40 second.
Maxwell is a unit of magnetic flux, which is defined as the total magnetic field passing through a given area. Therefore, 2.5 x 106 maxwells represent the magnetic flux that the conductor cuts through in 1/40 second.
To calculate the average voltage generated, we need to divide this magnetic flux by the time taken to cut it. Therefore, the average voltage generated in the moving conductor can be calculated as:
Average Voltage = (2.5 x 106 maxwells) / (1/40 second)
Simplifying this expression, we get:
Average Voltage = (2.5 x 106 maxwells) x (40 seconds)
Average Voltage = 100,000 volts

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Answer:

The enemy can use his vision across a broadband of the electromagnetic spectrum . Our century has seen the entire electromagnetic spectrum opened for business.

Explanation:

Answer:

Explanation:

Power is 1 W . That means it is using energy of one joule in one second.

one hour = 60 x 60 seconds

= 3600 s

work one by heart in one hour = 3600 x 1 = 3600 J

energy used by it  in one hour = 3600 J .

Answer:

530.43m/s

Explanation:

Given data

Mass m = 0.23kg

PE= 61J

From the expression for potential energy

PE= mgh

after it was shot

PE=KE

KE= 1/2mv^2

So

PE= 1/2mv^2

substitute

61= 1/2*0.23*v^2

61=0.5*0.23*v^2

61=0.115v^2

divide both sides by 0.115

v= 61/0.115

v=530.43 m/s

Hence the velocity is 530.43m/s

The intensity of the light after it has passed through the second filter is I₂ = 0.25Io.

When unpolarized light passes through a polarizing filter, it becomes linearly polarized with an intensity proportional to the cosine squared of the angle between the filter's axis and the polarization direction of the incident light.

In this case, the first filter makes an angle of α = 60° with the vertical. The intensity of the light after passing through the first filter is I₁ = Io * cos²α = Io * cos²60° = Io * 0.25.

The second filter has a horizontal axis, which is perpendicular to the polarization direction of the light transmitted by the first filter. Since the light is already polarized in the vertical direction after passing through the first filter, it will be blocked completely by the second filter. Therefore, the intensity of the light after passing through the second filter is I₂ = 0 * I₁ = 0.

In summary, the intensity of the light after passing through the second filter is zero (0).

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The capacitance across the motor must be 86.87 f to increase the power factor to 0.9 lagging.

An electric rotating machine with the capacity to transform electrical energy into mechanical energy is known as a single-phase motor. It functions using a single-phase power source. They have hot and neutral wiring, respectively. Their supply voltages fluctuate in unison and their power can exceed 3Kw.

I1 = 20A, f = 50 Hz

cosϕ1 = 0.75 ⇒ ϕ1 = 41.41∘ ⇒ tanϕ1 = 0.88

cosϕ2 = 0.9 ⇒ ϕ2 = 25.84∘ ⇒ tanϕ2 = 0.48

Ic = I1 cosϕ1 (tanϕ1 − tanϕ2)

= (20) (0.75) (0.88 – 0.48) = 6 A

C = Ie/2πfv

C = 6/2π × 20 × 220

C = 86.87∪f

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The freezing point of the solution is - 3.53°C, when the concentration of the solute is 8.1 gm and water is 100gm.

The temperature at which a liquid turns into a solid under normal atmospheric pressure is known as the freezing point. A melting point, on the other hand, is the temperature at which a solid turns into a liquid at ordinary atmospheric pressure. The temperature at which solid and liquid phases coexist in equilibrium is a more precise definition of the freezing point. The temperature at which a substance melts (or freezes) at one atmosphere of pressure is known as the normal freezing point.

The amount of solute contained in a specific amount of solution is the substance's concentration. The number of moles of solute in 1 L of solution, or molarity, is used to express concentrations.

The concentration of Solute = 8.1gm and water = 100 gms, α = 0.9

We know that,

ΔTf = i(Kf)m

      = 1 + (n-1)α × 1.86 × 8.1/80 × 100/100

ΔTf = 1.91.861 = 3.53°C.

now, the freezing point of the solution = 0 - 3.53 = -3.53°C.

Hence, the freezing point of the solution is - 3.53°C, when the concentration of the solute is 8.1 gm and water is 100gm.

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Answer:

1-watt power is defined as the power produced when 1 Joule of work is done for 1 second.

Explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!

Answer:

In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit).

Explanation:

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Answer:

c is the correct answer

Explanation:

A Rube Goldberg Machine is “a comically involved, complicated invention, laboriously contrived to preform a simple operation.” 2. What are the 6 Simple Machines? A. The 6 Simple Machines are: wedge, screw, lever, wheel and axel, inclined plane and pulley

Answer: it’s actually A

Explanation:

Anything sharp like a knife, is a wedge so the hook thingy is a wedge

Section I: Overview of Investigation
The purpose of this lab was to determine the volume and mass of various objects, and then calculate their density. To achieve this, we used a displacement method for measuring volume and weighed the objects to obtain their mass. The procedure involved several steps, including understanding the lab assignment, being aware of safety equipment and their uses, knowing the steps of the experiment, taking notes on a lab notebook, reviewing the data sheets of chemical material safety, wearing the necessary safety gear, and having a complete understanding of the experiment.
Section II: Observations and Conclusions
In this lab, we used charts and tables to clearly display the data we collected. Each chart and table included an appropriate title, labels, and units of measurement. These visuals helped us better understand the relationship between the volume, mass, and density of the objects we analyzed.
If we were to repeat this lab and improve upon it, we would optimize the space for lab equipment, label areas for placing minor equipment, incorporate drawers under the lab counter, and train new researchers before they use the reactives and lab equipment. These improvements would make the lab environment more organized and efficient, and ensure that everyone involved has a clear understanding of the procedures and safety precautions.

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In psychology research, the laboratory experiment has long been regarded as the "gold standard."

This is so that causality can be clearly established and because only laboratory experiments can distinguish between cause and effect.

What is a laboratory?

The evidence suggests that Pythagoras of Samos, a well-known Greek philosopher and scientist, had a laboratory in his home.

This laboratory was set up by Pythagoras, who experimented with sound tones and string vibration.

In a painting by Albert Edelfelt from 1885, Louis Pasteur is shown comparing a note in his left hand to a bottle containing a solid in his right hand, without wearing any personal protective equipment.

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(a)The component of the force Fa and Fb is Faₓ = 7.15 kN, \(F_a_y\) = 1.92 kN and Fbₓ = 6.9 kN, \(F_b_y\) = 2.65 kN.

(b) The projection of Pa and Pb of F onto the a and b axes is Pa = 5.63 kN and  2.52 kN.

(a)The component of the force Fa and Fb is calculated as follows;

Faₓ = 7.4 kN x cos(15) = 7.15 kN

\(F_a_y\) = 7.4 kN x sin (15) = 1.92 kN

Fbₓ = 7.4 kN x cos (21) = 6.9 kN

\(F_b_y\) = 7.4 kN x sin (21) = 2.65 kN

(b) The projection of Pa and Pb of F onto the a and b axes is calculated as follows;

angle opposite Pa = 90 - (31 + 21) = 38⁰

angle opposite Pb = 31 - 15 = 16⁰

angle opposite F = 180 - (38 + 16) = 126⁰

F/sin126 = Pa / sin38

7.4 / sin126 = Pa / sin 38

Pa = 7.4(sin 38 / sin 126)

Pa = 5.63 kN

F/sin126 = Pb / sin16

7.4 / sin126 = Pb / sin 16

Pb = 7.4(sin 16 / sin126)

Pb = 2.52 kN

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The missing part of the question is in the image attached