Q:)
Determine the polar moment of inertia and the polar radius of
gyration with respect to point O
how to find y and x equation?

Explanation:

Average Velocity = Displacement / Time

= 1.2km / 5 min

= 1200m / 300s

= 4m/s.

The average velocity of a moving body is the distance covered by time. The average velocity of the traveler covers 1.2 km in 5 min is 4 m/s.

Velocity is a physical quantity which measures the distance travelled per unit time. Velocity is a vector quantity thus having both magnitude and direction.

Velocity is the ratio of distance to the time. Given that the distance travelled by the man = 1.2 km = 1200 m

time = 5 min = (5 × 60 s) = 300 s.

Thus, velocity = distance/ time

                       = 1200 m / 300 s

                       = 4 m/s.

Therefore, the velocity of the traveler is  4 m/s.

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Answer:

jhon Dalton described it

Explanation:

hope it works out for you

if please mark brainiest

John Dalton described atoms as small spheres that could not be divided into anything smaller.

John Dalton is the scientist who described atoms as small spheres that could not be divided into anything smaller. He proposed his atomic theory in 1803, which included the postulate that all matter is composed of tiny, indivisible particles called atoms. D

Dalton's theory also stated that atoms of different elements are unique in their mass and chemical properties and combine in simple whole-number ratios to form compounds. Dalton's model of the atom was a solid, indivisible sphere that was the smallest possible unit of an element.

While this model has been refined and updated with new discoveries, Dalton's contributions laid the foundation for the modern understanding of atomic structure and chemical reactions.

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Answer:

A lightbulb has 25 W stamped on it. What does this mean?:

These labels mean that each lightbulb has Its respective power delivered to It when It Is connected to a constant

Explanation:

The wavelength of the incident light is approximately 314 nanometers.

The energy of a photon of light is given by:

E = hc/λ

where E is the energy of the photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of the light.

In photoelectric emission, the energy of the incident photon must be greater than or equal to the work function (ϕ) of the metal in order for an electron to be ejected. The energy of the ejected electron is given by:

K = E - ϕ

where K is the kinetic energy of the electron.

In the case of the stopping potential (V_stop), the kinetic energy of the ejected electrons is equal to the potential energy required to stop them, so we have:

K = eV_stop

where e is the elementary charge.

Combining these equations, we get:

E = K + ϕ = eV_stop + ϕ

Substituting the values given in the problem, we get:

hc/λ = eV_stop + ϕ

(6.626 ×  J s) × (3.00 × \(10^8\) m/s) / λ = (1.602 × 10⁻¹⁹ C) × (7.5 V) + (3.1 eV) × (1.602 × 10⁻¹⁹ J/eV)

λ = hc / (eV_stop + ϕ)

λ = (6.626 ×10⁻³⁴ J s) × (3.00 × \(10^8\)m/s) / [(1.602 ×  10⁻¹⁹ C) × (7.5 V) + (3.1 eV) × (1.602 × 10⁻¹⁹J/eV)]

λ = 3.14 ×10⁻⁷ m

So the wavelength of the incident light is approximately 314 nanometers.

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Metals have shiny apperances

If the oscillation amplitude is 0.22m, from a 0.29kg harmonic oscillator which has a total of mechanical energy 3.6j, the oscillation frequency is 4.141Hz.

It is a number of oscillations in the one-time unit, says per second. For example, a pendulum that takes 0.5s to make one full oscillation has a frequency of 1 oscillation per 0.5s or 2 oscillations / second.

How to calculate the oscillation frequency?

mass (m) = 0.29kg

Total energy (E) = 3.6j

amplitude (x) = 0.22m

E = 1/2 k*x^2

k = 2*E / x^2

= 2 * 3.6 / 0.22^2

= 148.76 N/m

Frequency (v) = 1/2π √k/m

= 1/2*3.14 * √148.76 / 0.22

= 4.141Hz

Therefore, the oscillation frequency is 4.141Hz.

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Answer:

During a solar flare a electrical power will be generated on earth

Answer:

the aurora borealis will be seen in the night sky

Explanation:

I think so..

Ultraviolet is correct answer .UV radiation is the type of electromagnetic energy that ozone would block in the stratosphere.

The ozone layer in the stratosphere blocks ultraviolet (UV) radiation, which is a form of electromagnetic radiation. This is important because UV radiation can be harmful to living organisms, including humans, causing skin damage and increasing the risk of skin cancer.

The majority of the sun's dangerous ultraviolet (UV) radiation, especially UV-B rays, are absorbed by ozone in the stratosphere, which serves as a natural filter. In addition to causing skin cancer, cataracts, and other health issues, UV radiation can be dangerous to living things. The majority of UV-B radiation falls within the 200–300 nanometer (nm) band of UV light that is absorbed by ozone. This is one of the reasons the ozone layer is crucial for life on our planet because it shields it from the damaging effects of UV radiation. Ozone in the stratosphere does not appreciably absorb other types of electromagnetic radiation, such as cosmic rays, infrared, microwaves, and visible light.

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The lens of history can be used to understand the context and long-term effects of an event or issue on various institutions. By looking at how an event or issue fits into the broader historical narrative, it can help to understand how it has shaped and continues to shape different institutions.

For example, if we look at the Civil Rights Movement of the 1950s and 1960s through the lens of history, we can see how it impacted various institutions such as education, the legal system, and politics. It led to the desegregation of schools and universities, the dismantling of legal structures that supported racial discrimination, and the increased representation of minorities in politics. These changes had a profound and lasting impact on American society and continue to shape the country to this day.

Another example is how the COVID-19 pandemic has affected various institutions in different ways, it changed the way health systems operate and the way people interact with health services, it has also affected the way people work, learn and interact with each other, it has also changed the way people shop and consume, it also has had a significant impact on the global economy.

In both examples, by looking at the events through the lens of history, we can understand how they have changed different institutions and how those changes have shaped society over time. This understanding can help us to predict how the changes brought about by an event or issue will continue to affect institutions in the future.

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The charge on the moving particle is -5.35 x \(10^{-21}\) C and the potential difference between the two locations is 1.29 x 10²V.

What is the charge?

Unknowns: The charge on the moving particle and the potential difference between the two locations.

Formula: The work done by an electric field on a charge is given by:

W = qΔV

where W is the work done, q is the charge, and ΔV is the potential difference.

The electrical potential energy of a charge in an electric field is given by:

PE = qV

where PE is the electrical potential energy, q is the charge, and V is the potential difference.

The electric field strength is given by:

E = ΔV/Δx

where E is the electric field strength, ΔV is the potential difference, and Δx is the distance moved by the charge.

Solution:

The work done by the electric field is equal to the change in electrical potential energy:

W = ΔPE = -6.9 x \(10^{-19}\)J

The electric field strength is given by:

E = ΔV/Δx = 325 N/C

The charge on the moving particle can be found using the formula:

W = qΔV

q = W/ΔV = (-6.9 x \(10^{-19}\) J)/(325 N/C x 4.0 m) = -5.35 x \(10^{-21}\) C

The negative sign indicates that the charge is negative.

The potential difference between the two locations can be found using the formula:

ΔV = -W/q = (6.9 x \(10^{-19}\) J)/(-5.35 x \(10^{-21}\) C) = 1.29 x 10² V

Therefore, the charge on the moving particle is -5.35 x \(10^{-21}\) C and the potential difference between the two locations is 1.29 x 10² V.

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Complete question is: A charge moves a distance of 4.0 m in the direction of a uniform electric field whose magnitude is 325 N/C. As the charge moves, its electrical potential energy decreases by 6.9 x \(10^{-19}\) J.  the charge on the moving particle is -5.35 x \(10^{-21}\) C and the potential difference between the two locations is 1.29 x 10² V.

Explanation:

the question is not clear

The crest of an ocean wave moves a distance of given time is 2 m/s.

To know the speed of the wave,

Use the formula,

speed = distance / time

Given,

distance = 20 m

time = 10s

s = ?

Putting values,

s = d / t

s = 20 / 10

s = 2 m/s

Although some individuals may believe that average speed and average velocity are simply two different names for the same quantity, average speed depends on both distance and displacement. The average speed will be greater than the average velocity if an object changes direction while traveling.

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The resulting resistance in the parallel combination is one-fourth the resistance of a single photodiode.

The resulting current in the parallel combination is four times the current of a single photodiode.

When identical photodiodes are connected in parallel, their current values add up while the voltage across them remains the same. To determine the resulting current and resistance for the combination, we can use the following formulas:

Current:

The total current (I_total) in the parallel combination is the sum of the currents through each individual photodiode:

I_total = I_1 + I_2 + I_3 + I_4

Since the photodiodes are identical, they have the same current (I) individually:

I_total = I + I + I + I

I_total = 4I

Resistance:

The equivalent resistance (R_eq) for a parallel combination of identical resistors is calculated using the formula:

1/R_eq = 1/R_1 + 1/R_2 + 1/R_3 + 1/R_4

Since the photodiodes are identical, they have the same resistance (R) individually:

1/R_eq = 1/R + 1/R + 1/R + 1/R

1/R_eq = 4/R

R_eq = R/4

It's important to note that the above analysis assumes ideal conditions and identical photodiodes. In practice, there may be slight variations between individual photodiodes that could affect the resulting values.

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The de Broglie wavelength of the electron in the ground state of hydrogen is approximately 3.31 × 10^-10 m.

We can use the de Broglie wavelength equation which relates the momentum of a particle to its wavelength:

λ = h/p

where λ is the de Broglie wavelength, h is Planck's constant, and p is the momentum of the particle.

The momentum of the electron can be found using the classical formula:

p = mv

where m is the mass of the electron and v is its velocity.

We have:

m = mass of electron = 9.1094 × 10^-31 kg

v = 2.2 × 10^-6 m/s

Using p = mv, we get:

p = (9.1094 × 10^-31 kg)(2.2 × 10^-6 m/s) = 2.00468 × 10^-36 kg m/s

Now, we can use the de Broglie wavelength equation to find λ:

λ = h/p = (6.626 × 10^-34 J s)/(2.00468 × 10^-36 kg m/s) ≈ 3.31 × 10^-10 m

Therefore, the de Broglie wavelength of the electron in the ground state of hydrogen is approximately 3.31 × 10^-10 m.

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Answer:

f = 4000 / 30 sec = 133.3    vibrations/sec

P = 1 / f = .0075 sec       period of 1 vibration

The Correct answer is a) The heat rises.

A convection current is a flow of fluid, such as air or water, that results from the transfer of heat. When a fluid is heated, it becomes less dense and rises, while the cooler, denser fluid sinks to take its place

What is Convection current ?

Convection current is a type of heat transfer that occurs in fluids (liquids and gases). It involves the movement of fluid due to temperature differences in different parts of the fluid. When a fluid is heated, it becomes less dense and rises, while cooler, denser fluid sinks to take its place. This creates a circular motion within the fluid, known as a convection current, which helps to distribute heat throughout the fluid. Convection currents are responsible for a range of natural phenomena, such as ocean currents, weather patterns, and even volcanic eruptions. They are also important in many industrial processes, such as cooling systems and fluidized bed reactors.

In a room, for example, a heater heats the air closest to it, causing it to become less dense and rise. As it rises, it transfers its heat to cooler air around it, causing that air to also rise and continue the convection current. This is why the hottest air in a room is often found near the ceiling, while the coolest air is near the floor. The heat is therefore spread by the upward motion of the warm air in a cyclical pattern.

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Explanation:

distance

speed =_________

time

distance = speed × time

= 2.5 × 5.0

distance = 12.5 m

The answer is C, 5.2

Answer:

The mass=0.169

The height=57.8

The power=1.63 watts

Explanation:

The formula for mass is 2KE/v^2

v=34×34 KE=98 therefore 2*98/34^2=0.169

The formula for height is v^2/2g

v=34*34 therefore 34^2/2*10=57.8

The formula for power is work/time

in which the work is the kinetic energy =98

and time 1*60secs =60 therefore 98/60=1.63watts

Answer:

Carbon Dioxide

Explanation:

Isotopes can be found in Carbon 12

Answer:

I thinks its c

Explanation:

I hope this helps :)

Answer:

filament bulb, filament lamp

Explanation:

More length of a wire is a component that has a greater resistance as the current through it increases​.

The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions present in the wire as they pass through. The moving electrons can collide with the ions present in the metal.

This makes more difficult for the current to flow and causes resistance in the wire so we can conclude that more length of a wire is a component that has greater resistance as more current passes through it.

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The solid cylinder and cylindrical shell have the same mass, and radius, and turn-on frictionless, horizontal axles. Both blocks tied to the ropes also have the same mass and are held at the same height above the ground.

When released simultaneously, the block tied to the solid cylinder will hit the ground first. This is because the solid cylinder has a larger moment of inertia compared to the cylindrical shell. The moment of inertia for a solid cylinder is (1/2), while for a cylindrical shell, it is MR^2, where M is the mass and R is the radius. Since the solid cylinder has a larger moment of inertia, it will take more time to accelerate and rotate, causing the block tied to it to fall faster. Therefore, the block tied to the solid cylinder will hit the ground first.

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As the weight lifter raises her arm toward a horizontal position, the force in the biceps muscle will decrease.

To find the force exerted by the biceps muscle on the forearm, we'll apply the principle of torque equilibrium.

The torque due to the weight of the forearm-hand combination, the external weight, and the biceps muscle must balance.

The total weight of the forearm-hand combination is 0.065 * 75 kg = 4.875 kg.

The torque due to the forearm-hand combination and the external weight is (4.875 kg * 9.81 m/s^2 * 0.175 m + 7.50 kg * 9.81 m/s^2 * 0.380 m) * sin(40°).

To find the force exerted by the biceps muscle (F_biceps), we'll divide this torque by the distance of the biceps attachment (0.055 m) and find F_biceps ≈ 981.29 N.

The elbow joint must exert a force equal in magnitude but opposite in direction to the sum of the biceps force and the combined weight of the forearm-hand and external weight. This force is directed both upward and horizontally toward the body.

As the weight lifter raises her arm toward a horizontal position, the force in the biceps muscle will decrease. This is because the angle between the arm and the vertical force of the biceps muscle becomes smaller, leading to a smaller torque component.

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Answer:

thank you

Explanation:

Answer:

False is correct

Explanation:

Peace and Love

Accident: Get burned

Prevention: turn off the burner.

Answer:

3. There would be no sound.

Explanation:

Sound is produced by vibrations that travel through a medium, most commonly through air.

If there is no matter to vibrate (such as in the vacuum of space) then there's no way for a sound wave to be produced.

Thus the answer is option 3. There would be no sound.