What component of a dc electric motor ensures that the current is always in the proper direction to yield a torque that produces a continuous rotation of the coil?.

Answer:

The acceleration of proton is 5.56 x 10^10 m/s^2 .

Explanation:

initial velocity, u = 0

Electric field, E = 580 N/C

final speed, v = 10^6 m/s

(a) Let the acceleration is a.

According to the Newton's second law

F = m a = q E

where, q is the charge of proton and m is the mass.

\(a= \frac{q E}{m}\\\\a = \frac{1.6\times10^{-19}\times 580}{1.67\times 10^{-27}}\\\\a= 5.56\times 10^{10} m/s^2\)

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.

To know more about Photon, click here:

https://brainly.com/question/33017722

#SPJ4

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.

To learn more about Photon, click here:

https://brainly.com/question/33017722

#SPJ4

Explanation:

The density of silver is 10.5g/cm3

=2500.0g/10.5g/cm3

=238.09cm3

238.1cm3 to nearest tenth.

I hope my answer helps. Please mark as brainliest.

The force between two like masses is always attractive, while the force between two like charges is always repulsive. The determining factor for attraction or repulsion is the sign of the charge or mass.

Like charges have the same sign, meaning they repel each other, while like masses have the same direction of force, meaning they attract each other. This behavior is described by Coulomb's law for charges and Newton's law of gravitation for masses.

The strength of the force is determined by the magnitude of the charge or mass and the distance between them. Understanding the differences between the behavior of like charges and masses is crucial in fields such as electromagnetism and astrophysics,

where the forces between particles and objects play a significant role in the behavior of matter and energy.

To learn more about : charges

https://brainly.com/question/25923373

#SPJ11

The minimum speed at which you must toss the 150 g ball straight up is approximately 5.6 m/s, just to touch the 12 m high roof of the gymnasium.

To find the minimum speed required to toss the ball straight up and touch the roof, we can use the principle of conservation of energy. At the moment of release, the ball possesses potential energy due to its height above the ground. The potential energy can be calculated using the formula PE = mg,

where m is the mass of the ball (150 g or 0.15 kg),

g is the acceleration due to gravity (approximately 9.8 m/s^2),

and h is the height above the ground (1.6 m).
PE = (0.15 kg)(9.8 m/s^2)(1.6 m)

= 2.352 J

This potential energy is converted into kinetic energy when the ball reaches the roof. At this point, the ball has zero potential energy but maximum kinetic energy.
The kinetic energy can be calculated using the formula KE = 0.5mv^2,

where v is the velocity of the ball.

KE = 0.5(0.15 kg)v^2 = 0.075v^2
Since the ball reaches the roof, its height is 12 m. At this point, the ball has zero kinetic energy but maximum potential energy.
Therefore, 2.352 J = 0.075v^2
Solving for v^2, we get v^2 = 2.352 J / 0.075 kg = 31.36 m^2/s^2
Taking the square root, we find v ≈ 5.6 m/s.
Hence, the minimum speed at which you must toss the 150 g ball straight up is approximately 5.6 m/s.

To know more about kinetic energy please refer:

https://brainly.com/question/8101588

#SPJ11

Answer:

Kinetic theory is based on the kinetic energy of moving particles.  In Boyle's Law the temperature is helped constant, so the kinetic energy of the molecules is a constant. The pressure and the volume are inversely related in Boyle's Law. In Kinetic theory pressure is created by the collision of particles.

plz mark me as brainly

Explanation:

The spherical mirror equation solved for s′, expressed in terms of f and s, is {s′ = fs / (s - f)}.

you solve the spherical mirror equation for s′. To do this, we'll use the mirror equation and express the answer in terms of f (focal length) and s (object distance).

The spherical mirror equation is given by:

1/f = 1/s + 1/s′

Where f is the focal length, s is the object distance, and s′ is the image distance. To solve for s′, follow these steps:

1. Subtract 1/s from both sides of the equation:

1/s′ = 1/f - 1/s

2. Find a common denominator for the right side of the equation, which is fs:

1/s′ = (s - f) / (fs)

3. Invert both sides of the equation to solve for s':

s′ = fs / (s - f)

So, the spherical mirror equation solved for s′, expressed in terms of f and s, is:

s′ = fs / (s - f)

To learn more about Mirror visit: https://brainly.com/question/29115160

#SPJ11

The correct answer is Specific heat.

The amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit at standard atmospheric pressure is called specific heat in BTU (British Thermal Unit) which is a unit of measurement for energy used as per the British system.

BTU is used for measuring the heating or cooling capacity of an appliance as per the FPS system. For example, the BTU rating of a furnace or air conditioner indicates how much heat or cooling it can produce in a given period of time.

For more info on specific heat refer,

https://brainly.com/question/11297584

#SPJ4

Those portions of the celestial sphere near the celestial poles that are either always above or always below the horizon, these kind of stars never rise and never set since they remain above/below the horizon is C. Circumpolar.

The celestial poles are the points on the celestial sphere that are directly above the Earth's North and South Poles. The celestial sphere is an imaginary sphere that encircles the Earth, and is used to describe the positions of objects in the sky, those portions of the celestial sphere near the celestial poles that are either always above or always below the horizon are called circumpolar regions. In these regions, stars never rise or set since they remain above or below the horizon. Circumpolar stars are stars that always remain above or below the horizon and never rise or set, these stars are located near the celestial poles and they appear to rotate around them.

The altitude of these stars depends on the observer's latitude, the closer the observer is to the North or South Pole, the higher the circumpolar stars will be above the horizon. The coordinates used to locate a star on the celestial sphere are right ascension (RA) and declination. RA is similar to longitude on the Earth, and it measures the east-west position of a star on the celestial sphere. Declination is similar to latitude on the Earth, and it measures the north-south position of a star on the celestial sphere. So therefore these coordinates can be used to locate any star on the celestial sphere, including circumpolar stars.

Learn more about celestial poles at:

https://brainly.com/question/30419965

#SPJ11

The tension in the string at the bottom is larger than the tension in the string at the top by six times the weight of the ball as 4mg + 2mg = 6mg.

Let V₁ be the speed of ball at bottom and V₂ at top, If Ttop and Tbottom are tensions :-

According to conservation of energy;

1/2mv₁² = 1/2mv₂² + mg(2R)

m(v₁² - v₂²) = 4mgR

Tbottom = mv₁²/R + mg

Ttop = mv₂²/R - mg

Tbottom - Ttop = m/R(v₁² - v₂²) + 2mg

⇒ 4mg + 2mg = 6mg

Any physical object that is in contact with another one can apply forces to that object. Depending on the types of objects in touch, we label these contact forces differently. We refer to the force as tension if a rope, string, chain, or cable is one of the things applying the force.

Know more about energy:

brainly.com/question/13881533

#SPJ4

Answer:

The answer is True

Explanation:

I hope it helps

Answer:

it's true

Explanation:

High–pitched sounds have short wavelengths, which means that the peaks are close together. Low–pitched sounds have longer wavelengths, so the peaks are more spread out.

Answer: Phosphagen Pathway

Explanation:

is the first energy source called upon at the beginning of any exercise program or in burst movements that are too quick for other systems to be called into action

The All activities in the human body begin with the energy pathway known as cellular respiration.

Cellular respiration is the process by which cells convert the energy stored in food molecules, such as glucose, into a form that can be used by the body. This process takes place in the mitochondria, the powerhouses of the cell. There are two main stages of cellular respiration: glycolysis and the citric acid cycle.

Glycolysis is the breakdown of glucose into two pyruvate molecules and the generation of a small amount of ATP. This stage takes place in the cytoplasm and does not require oxygen.

The citric acid cycle, also known as the Krebs cycle or the tricarboxylic acid cycle, takes place in the mitochondria and generates a large amount of ATP. During this cycle, the pyruvate molecules produced in glycolysis are converted into acetyl-CoA, which enters the citric acid cycle. The citric acid cycle produces high-energy electrons, which are used to generate ATP through oxidative phosphorylation.

The final stage of cellular respiration is the electron transport chain, which takes place in the inner membrane of the mitochondria. In this stage, the high-energy electrons produced in the citric acid cycle are transferred along a series of proteins, generating a proton gradient that drives the production of ATP.

In summary, cellular respiration is a complex and essential process that allows cells to generate the energy needed for all their activities, from muscle contractions to brain function.

Here you can learn more about cellular respiration

https://brainly.com/question/13721588#

#SPJ11

Answer:the 2 hours

Explanation: Its just simple math

Answer:

2

Explanation:

hope this helps

Answer:

B. Extrusive igneous

Explanation:

Its B

Answer:   Burning of wood is a chemical change while cutting of wood is a physical change because during burning, new substances are formed. After burning, we cannot get original substance, (i.e. wood) back. Cutting of wood into small pieces is a physical change because no new substance is formed.

Answer:

partial solar eclipse

Explanation:

A partial solar eclipse happens when the Moon passes between the Sun and Earth but the Sun, Moon, and Earth are not perfectly lined up. Only a part of the Sun will appear to be covered, giving it a crescent shape.

Hi there!

We can begin by calculating the acceleration of the system:

∑F = ma

m = sum of the mass of both blocks

Solve for acceleration:

∑F/m = a

30/(6 + 9) = 2 m/s²

On the 6 kg block, the tension is equivalent to the net force:

∑F = T

Since we know that the 6kg is accelerating at 2 m/s², we can solve for tension:

∑F = T = ma

T = 6 · 2 = 12 N

Answer:

b

Explanation:

Static equilibrium means that all forces are equal, so to make this easiest you want to break F1 into it's horizontal and vertical components. As there are no other forces acting in the horizontal, we know the horizontal component of F1 is 40N.

Dynamic equilibrium is a state in which bodies are moving at a constant speed as opposed to static equilibrium, which is a state in which bodies are at rest (rectilinear motion). The total amount of forces exerted on them in both situations is zero.

When two forces are acting on an object that is in static equilibrium, it indicates that their sum is zero, which makes static equilibrium a useful analytical tool. You may create an equation to figure out the direction and strength of the unknown force if you know the direction and strength of one of the forces.

Thus, Static equilibrium means that all forces are equal, so to make this easiest you want to break F1 into it's horizontal and vertical components.

To learn more about static equilibrium, follow the link;

https://brainly.com/question/13241683

#SPJ1

The correct option is 4.

The process by which the isotope 56Fe decays into the isotope 56Co is beta decay.

The correct option is 4.What is beta decay? Beta decay is a type of radioactive decay in which a beta particle, a positron, or an electron is emitted by the nucleus of an atom. Beta decay is a decay process in which the atomic nucleus emits beta particles, which are high-energy, high-speed electrons or positrons.

In beta decay, a neutron in the nucleus transforms into a proton, causing the emission of an electron and a neutrino in the process. The isotope 56Fe decays into the isotope 56Co by the following beta decay process:56Fe26 → 56Co27 + β−where β- is a beta particle, and it is emitted from the nucleus, resulting in an increase in atomic number Z by one, while atomic mass number A remains unchanged. The daughter isotope is 56Co.

Learn more about isotope visit : brainly.com/question/14220416

#SPJ11

The phase defig in an resistor electrical circuit refers to the phase difference between the voltage and the current.

In a resistor circuit, the voltage (vr) and the current (ir) are related by Ohm's law: vr = irR, where R is the resistance of the resistor. To find vr(t) and ir(t), we need to know the time-dependent behavior of the voltage and the current.

Assuming that the circuit is driven by a sinusoidal voltage source with a frequency of ω, we can express the voltage and the current as vr(t) = Vrms*cos(ωt + φv) and ir(t) = Irms*cos(ωt + φi), where Vrms and Irms are the root-mean-square values of the voltage and the current, and φv and φi are the phase angles of the voltage and the current, respectively.

To find vr(t) and ir(t), we need to determine Vrms, Irms, φv, φi, and R. Once we have these values, we can use the above equations to calculate vr(t) and ir(t).

To determine the phase difference between vr(t) and ir(t), we need to calculate the phase angle φ = φv - φi. The phase angle represents the difference in time between the peaks of the voltage and the current waveforms.

In summary, the phase defig in an electrical circuit refers to the phase difference between the voltage and the current.

To find vr(t) and ir(t), we need to know the time-dependent behavior of the voltage and the current, which can be expressed in terms of Vrms, Irms, φv, φi, and R. The phase difference between vr(t) and ir(t) can be calculated as φ = φv - φi.

For more information on resistor kindly visit to

https://brainly.com/question/31137305

#SPJ11

Answer:

V= in square root 2KE/M=2(143.3J)/0.047kg=6097.8723 in square root around 78.1 approxmete

Explanation:

Answer:

B.

Explanation:

This is because if it has a long half-life then there will be enough rock left to be able to determine the age of the rock. It is not A. because if it has a long half-life there would be part of the substance left to determine the age. It is not C. because in order to study the substance, there must first be a substance left to study.

Hope this helps!

The astronaut's height, as measured from the space station, will appear contracted due to relativistic effects. Due to relativistic length contraction, the astronaut's height, as measured from the space station, appears to be approximately 3.52 meters.

According to the theory of special relativity, objects in motion relative to an observer will experience length contraction along the direction of motion. In this case, the spaceship is moving at a speed of 0.9 times the speed of light (0.9 c) relative to the space station.

The length contraction factor, denoted by γ, can be calculated using the Lorentz factor:

γ = 1 / √(1 - v²/c²)

Where v is the velocity of the spaceship and c is the speed of light. Plugging in the values, we have:

γ = 1 / √(1 - 0.9²)

γ ≈ 1.92

To determine the astronaut's height as measured from the space station, we multiply her actual height by the length contraction factor:

Height (as measured from the space station) = Actual height × γ

Height (as measured from the space station) = 1.83 m × 1.92

Height (as measured from the space station) ≈ 3.52 m

Therefore, due to relativistic length contraction, the astronaut's height, as measured from the space station, appears to be approximately 3.52 meters.

Learn more about spaceship here:

https://brainly.com/question/14198872

#SPJ11

Because different visible light colors have distinct wavelengths and barely varying refractive indices, the wavelength of the light influences the angle of refraction.

For instance, you cannot tell the difference when white light passes through a flat piece of glass because it is so slight.

The reflected beam will always be refracted at the same angle that it impacted the surface since light will then continue to go through the same medium and at the same speed.

A periodic wave's wavelength is its spatial period, or the length over which its shape repeats. It is a property of both travelling waves and standing waves as well as other spatial wave patterns. It is the distance between two successive corresponding locations of the same phase on the wave, such as two nearby crests, troughs, or zero crossings.

To know more about refraction, click the below link

brainly.com/question/14760207

#SPJ4

The mass of calcium phosphate the reaction can produce is 6.076 grams.

Mass is a numerical measure of inertia, which is a basic feature of all matter. It is, in effect, a body of matter's resistance to a change in speed or position caused by the application of a force.

In the International System of Units (SI), the kilogram is the unit of mass.

Given;

Mass of calcium nitrate (Ca(NO₃)₂) = 96.1 g

Mass of calcium phosphate=?

The chemical equation is found as;

3Ca(NO₃)₂ + 2Na₃PO₄ → 6NaNO₃ + Ca₃(PO4)₂

3 moles of Ca(NO₃)₂ produces 1 mole of Ca₃(PO4)molar mass of calcium phosphate is 164 g/mol

Moles are found as the ratio of the mass of the compound and its molar mass. Moles of Ca(NO₃)₂ is n.

n = 96.1/164 = 0.5859 moles

Moles of Ca3(PO4)2 produced ;

N=0.0589 ×(1/3) = 0.0196 moles

The molar mass of calcium phosphate is 310 g/mol and the mass of calcium phosphate produced will be;

M=0.0196×310

M = 6.076 g

Hence,the mass of calcium phosphate the reaction can produce is 6.076 grams.

To learn more about the mass, refer to the link;

https://brainly.com/question/13073862

#SPJ1

Answer:

Water gains energy during evaporation and releases it during condensation in the atmosphere

Explanation:

In the water cycle, heat energy is gained or lost by water as it undergoes various processes in the cycle.

In evaporation, water molecules gains energy because the molecules of water vibrate faster and become more energetic. Hence they are able to escape into the atmosphere from the surface of the liquid.

In condensation, the molecules of gaseous water looses energy and becomes liquid.

Hence, water gains energy during evaporation and releases it during condensation in the atmosphere.

Answer:

K12 HE HE

Explanation:

To have the same KE as a 1470 kg car traveling at 1.13 m/s, a 76.0 kg man must start swinging at an angle of 59° from vertical.

Kinetic energy is the energy observable as the motion of a body, particle, or group of particles. A moving object consumes kinetic energy. For example: A person walking, a baseball being thrown, crumbs falling off a table, and charged particles in an electric field are all examples of kinetic energy.

h = L - Lcosθ

h = L( 1- cosθ)

At bottom,

KE = ¹/₂ mv²

K₁ + U₁ = K₂ + U₂

0 + mgh =  ¹/₂ mv² + 0

Hence,

K₂ = mgh

K₂ = mgL(1- cosθ)

KE(car) = K₂

¹/₂ mv² = mgL(1- cosθ)

¹/₂ × 1470 × 1.13² = 76.0 × 2.8 × ( 1- cosθ)

0.49 = 1- cosθ

cosθ = 0.51

θ = 59°

To know more about kinetic energy, visit:

https://brainly.com/question/22174271

#SPJ4