in most applications the braking torque of the friction brakes should be?

Answer:

electron

Explanation:

The electron is the subatomic particle with the least mass. Therefore option A is correct.

Both protons and neutrons have significantly larger masses compared to electrons.

The mass of an electron is approximately 9.1 x 10^-31 kilograms, while the mass of a proton is about 1.67 x 10^-27 kilograms, and the mass of a neutron is also around 1.67 x 10^-27 kilograms.

It's important to note that the "atom" is not a subatomic particle but a structure composed of subatomic particles. An atom consists of a nucleus (composed of protons and neutrons) and electrons orbiting around the nucleus.

The mass of an atom depends on the number of protons, neutrons, and electrons it contains, so it can vary widely depending on the specific atom.

In summary, when comparing individual subatomic particles, the electron has the least mass.

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The joints that connect the four fingers (excluding the thumb) with the carpal bones are called metacarpophalangeal joints (MCP joints).

The metacarpophalangeal joints are located at the base of each finger, where the metacarpal bones of the hand articulate with the proximal phalanges of the fingers. These joints allow for flexion (bending) and extension (straightening) of the fingers and also provide some degree of rotational movement.

There are five metacarpophalangeal joints in total, one for each finger. They are commonly referred to as the knuckles.

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The specific heat capacity formula is used to determine the quantity of heat required to alter the temperature of a unit mass of a substance by one degree Celsius.

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The photon's wavelength emitted during the transition from n = 2 to n = 3 is approximately 256 nm. The photon's wavelength emitted during the transition from n = 1 to n = 3 is about 160 nm. The width of the box is approximately 0.622 nm.

The energy levels of a particle in a one-dimensional box:

Eₙ = (n² ×h²) / (8 × m × L²)

where:

Eₙ: energy level of the particle

n: quantum number of the energy level

h: Planck's constant

m: mass of the particle

L: width of the box.

Transition from n = 2 to n = 3:

Let's assume the wavelength of the photon emitted during this transition is λ.

ΔE = E₃ - E₂

ΔE = ((3² × h²) / (8 ×m × L²)) - ((2² × h²) / (8 × m × L²))

ΔE = (h² / (8× m × L²)) ×(9 - 4)

ΔE = (h²/ (8 × m × L²)) × 5

The energy difference is proportional to the frequency of the emitted photon:

ΔE = h × c / λ

where c is the speed of light.

We can equate the two expressions for ΔE:

(h² / (8 × m × L²)) × 5 = h × c / λ

λ = (8 × m × L² ×c) / (5 × h)

Plugging in the given values:

m = mass of the electron = 9.11 x 10⁻³¹ kg

L = width of the box (to be determined)

c = speed of light = 3 x 10⁸ m/s

λ = (8 ×(9.11 x 10⁻³¹ kg) × L² × (3 x 10⁸ m/s)) / (5 ×(6.626 x 10⁻³⁴ J·s))

Solving for L

L² = (5 × (6.626 x 10⁻³⁴J·s) × λ) / (8 ×(9.11 x 10⁻³¹kg) × (3 x 10⁸ m/s))

L² = 0.00047765 m²

L ≈ 0.021847 m

The wavelength of the photon is given by:

λ = (8 × (9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (5 × (6.626 x 10⁻³⁴J·s))

λ ≈ 256 nm

Transition from n = 1 to n = 3:

Following the same steps,

ΔE = E₃ - E₁

ΔE = ((3² × h²) / (8 ×m ×L²)) - ((1² × h²) / (8 × m × L²))

ΔE = (h² / (m × L²))

Using ΔE = h × c / λ:

(h² / (m × L²)) = h ×c / λ

Simplifying and solving for λ:

λ = (m × L² × c) / h

Plugging in the given values:

λ = ((9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (6.626 x 10⁻³⁴ J·s)

λ ≈ 160 nm

Width of the box (L):

From the above equations,

L² = (5 × (6.626 x 10⁻³⁴J·s) × (426 nm)) / (8 × (9.11 x 10⁻³¹ kg) × (3 x 10⁸ m/s))

L ≈ 0.000622 m or 160 nm

Therefore, the answers are 256 nm, 160 nm, and 0.622 nm respectively.

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The wavelength of the photon released during the change from n = 2 to n = 3 is roughly 256 nm. About 160 nm is the wavelength of the photon that is released when n = 1 changes to n = 3. The box has a width of about 0.622 nm.

Given values:

m = mass of the electron = 9.11 x 10⁻³¹ kg

L = width of the box (to be determined)

c = speed of light = 3 x 10⁸ m/s

The energy levels of a particle in a one-dimensional box:

Eₙ = (n² ×h²) / (8 × m × L²)

where:

Eₙ: energy level of the particle

n: quantum number of the energy level

h: Planck's constant

m: mass of the particle

L: width of the box.

Transition from n = 2 to n = 3:

The wavelength of the photon emitted during this transition is λ.

ΔE = E₃ - E₂

ΔE = ((3² × h²) / (8 ×m × L²)) - ((2² × h²) / (8 × m × L²))

ΔE = (h²/ (8 × m × L²)) × 5

The frequency of the photon that was released directly correlates with the energy difference:

ΔE = h × c / λ

,c is the speed of light.

Evaluating the two expressions for ΔE:

(h² / (8 × m × L²)) × 5 = h × c / λ

λ = (8 × m × L² ×c) / (5 × h)

λ = (8 ×(9.11 x 10⁻³¹ kg) × L² × (3 x 10⁸ m/s)) / (5 ×(6.626 x 10⁻³⁴ J·s))

Solving for L

L² = (5 × (6.626 x 10⁻³⁴J·s) × λ) / (8 ×(9.11 x 10⁻³¹kg) × (3 x 10⁸ m/s))

L ≈ 0.021847 m

The wavelength of the photon is given by:

λ = (8 × (9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (5 × (6.626 x 10⁻³⁴J·s))

λ ≈ 256 nm

Transition from n = 1 to n = 3:

ΔE = E₃ - E₁

ΔE = ((3² × h²) / (8 ×m ×L²)) - ((1² × h²) / (8 × m × L²))

ΔE = (h² / (m × L²))

Using ΔE = h × c / λ:

(h² / (m × L²)) = h ×c / λ

Solving for λ:

λ = (m × L² × c) / h

λ = ((9.11 x 10⁻³¹ kg) × (0.021847 m)² × (3 x 10⁸ m/s)) / (6.626 x 10⁻³⁴ J·s)

λ ≈ 160 nm

Width of the box (L):

From the above equations,

L² = (5 × (6.626 x 10⁻³⁴J·s) × (426 nm)) / (8 × (9.11 x 10⁻³¹ kg) × (3 x 10⁸ m/s))

L ≈ 0.000622 m or 160 nm

Thus, the answers are 256 nm, 160 nm, and 0.622 nm respectively.

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Answer: Dispersion

Explanation:

the best explanation using Newton's third law is the gun moving backward while firing a bullet.

Newton's third law of motion states that for every action, there is an equal and opposite reaction. In the case of the gun firing a bullet, when the bullet is expelled from the barrel, it exerts a forward force on the bullet. Simultaneously, according to Newton's third law, the gun experiences an equal and opposite backward force (recoil). This backward motion of the gun is a result of the action-reaction pair.

In the other options:

- A larger engine allowing a car to accelerate faster can be explained by Newton's second law, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

- A bicyclist coasting down from the top of a hill can be explained by the conservation of energy and the force of gravity acting on the cyclist.

- When a car stops short and the passenger moves forward, it can be explained by Newton's first law, also known as the law of inertia. The passenger tends to continue moving forward due to inertia until an external force (such as a seatbelt or airbag) acts on them to stop their motion.

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Answer:

....

Explanation:

Answer:

What do you mean.

Explanation:

Explanation:

\( \sin(60) = \frac{ \sqrt{3} }{2} \\ \\ \sin(60 ) {}^{2} = ( \frac{ \sqrt{3} }{2} ) {}^{2} \\ \\ \sin(60 ) {}^{2} = \frac{3}{4} \)

Answer:

The answer is b

Hope this helps you!

Answer:Δx=v0t + 1/2 at 2

Answer:

NaSO

Explanation:

Since there is no common factor besides 1, the formula is already the empirical formula for this compound.

good luck, i hope this helps :)

Answer: \(92.18\ m/s\), east

Explanation:

Given

Ship is traveling at a speed of \(v=93\ m/s\)

Direction of ship is \(25^{\circ}\) North of east

If we break velocity vector in x and y axes then, the horizontal component is given by

\(\Rightarrow v_x=93\cos 25^{\circ}\\\Rightarrow v_x=92.18\ m/s\)

The direction of horizontal component is towards east with magnitude of \(92.18\ m/s\)

Answer:

i don't really know the exact answer but i would say something like earthquakes or steam/excessive heat

Explanation:

Fortune telling is the character that MOST closely resembles the real goddess.

A ancient Irish goddess known as the Morrigan is connected to battle and prophesy in Celtic mythology.This Celtic warrior queen had a variety of skills, but her ability to shape-shift and foretell death stands out.

The name "Morrigan" comes from the Irish "great queen" Mór Roghain.The Morrigan was indeed a goddess for war and death that frequently appeared as a crow in Irish mythology.While "Mor" denotes "mother" in Norwegian and "myrrh" in Hebrew.

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Answer:

71.6 mph

Explanation:

you would do 645 divided by 9 which would give you 71.6

The image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

The quantities that contain the magnitude of the quantities along with the direction are known as the vector quantities.

Examples of vector quantities are displacement, velocity acceleration, force, etc.

Thus, the image shows the correct way of lining up vectors to add them together, that the two arrows lined up one after the other, therefore the correct answer is option B.

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Answer: 37.5 nm

Explanation: speed of light c= 3.00·10^8 m/s.

I use same accuracy to speed of light as it's for frequency.

Frequency f= 8.01·10^15 1/s

Speed c = wavelength · frequency

Wavelength = c/f = 3.745·10^-8 m

The wavelength of light associated with a frequency of 8.01E15 Hz is approximately 374 nm.

Wavelength is a term used in physics to describe the distance between two consecutive peaks or troughs of a wave. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters, centimeters, or nanometers.

We can use the formula c = λν, where c is the speed of light (approximately \(3.00 x 10^8 m/s\) ), λ is the wavelength in meters, and ν is the frequency in Hertz.

First, we need to convert the frequency from Hz to \(s^-1:\)

\(8.01 x 10^15 Hz = 8.01 x 10^15 s^-1\)

Next, we can rearrange the formula to solve for λ:

λ = c/ν

λ = (\(3.00 x 10^8 m/s) / (8.01 x 10^15 s^-1)\)

λ ≈\(3.74 x 10^-8 m\)

Finally, we can convert meters to nanometers:

λ ≈ \(3.74 x 10^-8 m x (1 nm / 1 x 10^-9 m)\)

λ ≈ 374 nm

Therefore, the wavelength of light associated with a frequency of 8.01E15 Hz is approximately 374 nm.

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Answer:

tbh vector does not have any direction at all the answer is 0

The speed limit for a curved stretch of road with the coefficient of friction between the wheels and the road is 0.7 when the road is dry and 0.3 when the road is wet is √ 2.94 r m / s

Fc = m ac

Ff = μ N

N = m g

Fc = Centripetal force

m = Mass

ac = Centripetal acceleration

Ff = Frictional force

μ = Co-efficient of friction

N = Normal force

μ = 0.3 ( Wet value to taken to provide zero skidding under any condition)

g = 9.8 m / s²

The only force that is providing the centripetal force is frictional force.

m ac = μ m g

ac = 0.3 * 9.8

ac = 2.94 m / s²

ac = v² / r

2.94 = v² / r

v = √ 2.94 r m / s

Therefore, the speed limit for the curved stretch of road is √ 2.94 r m / s. She should perform her calculations with the coefficient of friction for wet pavement.

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Answer:

Answer choice B!

Explanation:

Study Island work

Answer:A

I DID THIS ON STUDYILSLAND

Answer:

Energy.

Explanation:

Émilie du Châtelet is known for her work in physics and mathematics in the 1700s, during a time when women were not typically involved in these fields. One of her most significant contributions was her translation and commentary on Isaac Newton's "Principia Mathematica," which helped to spread Newton's ideas throughout Europe.

In her own research, Émilie du Châtelet made significant contributions to the understanding of energy and conservation laws. Specifically, she formulated and tested a conservation law for what she called "living force," which we now understand as kinetic energy. This quantity depends on an object's mass and the square of its speed, and is conserved in a closed system, just like momentum. Her work laid the foundation for the modern concept of energy conservation, which is a fundamental principle in physics.

The modern concept of energy conservation and helped establish the importance of mathematics in physics.

Émilie du Châtelet formulated and tested the conservation law for kinetic energy, which is the quantity that depends on an object's mass and the square of its speed. Kinetic energy is the energy an object possesses due to its motion, and it is defined as one-half the product of an object's mass and the square of its velocity, or KE = 1/2mv².

Before Châtelet, the concept of energy was not well-defined, and many scientists believed that the total amount of motion in a closed system was conserved. Châtelet, however, recognized that kinetic energy is distinct from momentum and that energy can be transformed from one form to another, but it cannot be created or destroyed.

To test her theory, Châtelet performed experiments in which she dropped balls from various heights and measured their velocities upon impact. She found that the total energy of the system (the sum of the kinetic energy of the ball and the potential energy due to its height) was conserved throughout the process, even though the ball's momentum changed due to the force of gravity.

Châtelet's work laid the foundation for the modern concept of energy conservation and helped establish the importance of mathematics in physics.

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Answer:

C)

Explanation:

Earth's Rotation

Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.

     Mach number is "the ratio of the speed of a body to the speed of sound in the surrounding medium" (Oxford Languages). Put simply, it's a ratio comparing the local flow velocity to the speed of sound in the medium.

     It is represented with the following formula. M is the mach number, u is the local flow velocity, and c is the speed of the sound in the medium.

                  \(\boxed{\displaystyle M=\frac{u}{c} }\)

Answer:

Explanation:

As a pendulum swings, its potential energy converts to kinetic and back to potential. ... During the course of a swing from left to right, potential energy is converted into kinetic energy and back.

Answer:

Once the weighted end of the pendulum is released, it will become active as gravity pulls it downwards. Potential Energy Is Converted To Kinetic Energy. which is the energy exerted by a moving object. An active pendulum has the most kinetic energy at the lowest point of it's swing when the weight is movin.

HOPE THIS HELPS!!

The pressure of the butane gas sample at 120.0 mL can be determined by using the ideal gas law equation, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

To find the pressure of the butane gas sample at 120.0 mL, we need additional information such as the number of moles and the temperature of the gas. Once we have these values, we can use the ideal gas law equation, PV = nRT, to calculate the pressure.

1. Determine the values: Gather the known values for the problem, such as the volume (V = 120.0 mL) and any other given information, such as the number of moles (n) and the temperature (T).

2. Convert the volume: If necessary, convert the volume to the appropriate unit for the ideal gas law equation. The ideal gas law typically requires volume to be in liters, so if the given volume is in milliliters, divide it by 1000 to convert to liters.

3. Plug in the values: Substitute the known values into the ideal gas law equation, PV = nRT. Make sure to use consistent units for all the variables.

4. Solve for pressure: Rearrange the equation to solve for pressure (P). Divide both sides of the equation by the volume (V) to isolate pressure: P = (nRT) / V.

5. Calculate the pressure: Substitute the known values into the equation and perform the necessary calculations to find the pressure of the butane gas sample at 120.0 mL.

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A resistor of 60 Ω placed in parallel with a 20 Ω resistor will result in a combined resistance of 15 Ω.

Let's call the resistance we need to find "x".

When two resistors are connected in parallel, the reciprocal of their combined resistance is equal to the sum of the reciprocals of their individual resistances, use this fact to write an equation:

1/20 + 1/x = 1/15

To solve for x, start by simplifying the equation:

1/x = 1/15 - 1/20

Next,  find a common denominator for the fractions on the right-hand side:

1/x = (4/60) - (3/60)

1/x = 1/60

Finally, take the reciprocal of both sides to solve for x:

x = 60 Ω

Therefore, a resistor will be  60 Ω .

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Answer:980 N

Explanation:

I believe the answer is Justine, correct me if I’m wrong.