For an advanced lab project you decide to look at the red line in the Balmer series. According to the Bohr Theory, this is a single line. However, when you examine it at high resolution, you find that it is a closely-spaced doublet. From your research, you determine that this line is the 3s to 2p transition in the hydrogen spectrum. When an electron is in the 2p subshell, its orbital motion creates a magnetic field and as a result, the atom's energy is slightly different depending on whether the electron is spin-up or spin-down in this field. The difference in energy between these two states is ΔE = 2μBB, where μB is the Bohr magneton and B is the magnetic field created by the orbiting electron. The figure below shows your conclusion regarding the energy levels and your measured values for the two wavelengths in the doublet are λa = 6.544550 ✕ 10−7 m and λb = 6.544750 ✕ 10−7 m. (Let h = 6.626069 ✕ 10−34 J · s, c = 2.997925 ✕ 108 m/s, and μB = 9.274009 ✕ 10−24 J/T.) Determine the magnitude of the internal magnetic field (in T) experienced by the electron. When doing calculations, express all quantities in scientific notation, when possible keep six places beyond the decimal, and round your answer off to at least three significant figures at the end.

Answer: The scenario violates the second law of thermodynamics.

Explanation: The second law states that heat cannot be converted into work without some loss of usable energy, and that the amount of usable energy in a closed system will always decrease over time. Therefore, the machine described in the scenario cannot exist because it would violate the second law by converting all of the heat into electricity without any loss of usable energy.

Answer: It’s fastest in gases. Letter C !

Explanation:

Answer:

its c

Explanation:

Answer:

Explanation:

We shall apply Wien's displacement law which is as follows .

λ T = b where λ is wavelength of light that is coming out of hot body to maximum extent .

Putting the value of temperature given and b

λ x 500 = 2898 μmK

λ = 5.796 μm = 5796 nm

For temp 1050 K

λ = 2760 nm

For temp 1800 K

λ = 1610  nm

For temp 2500 K

λ = 1159.2  nm

The visible range starts from 740 nm .

Hence we can expect that some amount of visible light may emerge at the temperature of 2500K because the wavelength that we have calculated above gives the value of peak wavelength of a spectrum of light coming out of hot body .  

Answer:

Gases are easily compressed. We can see evidence of this in Table 1 in Thermal Expansion of Solids and Liquids, where you will note that gases have the largest coefficients of volume expansion. The large coefficients mean that gases expand and contract very rapidly with temperature changes. In addition, you will note that most gases expand at the same rate, or have the same β. This raises the question as to why gases should all act in nearly the same way, when liquids and solids have widely varying expansion rates.

Explanation:

Answer:

326,000

Explanation:

One acre-foot equals about 326,000 gallons, or enough water to cover an acre of land, about the size of a football field, one foot deep. An average California household uses between one-half and one acre-foot of water per year for indoor and outdoor use.

The amount of mechanical energy stored in the spring changes by a factor of 25.

The energy stored in an elastic spring is given as;

E = ¹/₂kx²

The energy stored in an elastic spring is directly proportional to the square of the extension of the spring.

when the spring is stretched by 5 times greater, the energy stored in the spring is calculated as;

E =  ¹/₂k(5x)²

E =  ¹/₂k(25x²)

E = 25(¹/₂kx²)

Thus, the amount of mechanical energy stored in the spring changes by a factor of 25.

Learn more about energy stored in a spring here: https://brainly.com/question/24920155

#SPJ1

To determine the thrust applied by the engines, we can use Newton's second law of motion, which states that force (thrust) is equal to mass times acceleration. In this case, we need to calculate the force required to decelerate the plane from 30 m/s to 25 m/s in 12 seconds.

First, we calculate the change in velocity (∆v):

\(\displaystyle\sf \Delta v=25\,m/s-30\,m/s=-5\,m/s\)

Next, we calculate the acceleration (∆a) using the formula:

\(\displaystyle\sf \Delta a=\frac{\Delta v}{\Delta t}\)

where ∆t is the change in time, which is 12 seconds in this case.

\(\displaystyle\sf \Delta a=\frac{-5\,m/s}{12\,s}\)

Now, we can determine the force (thrust) applied by the engines using Newton's second law:

\(\displaystyle\sf F=m\cdot a\)

where m is the mass of the airplane, which is 480000 kg.

\(\displaystyle\sf F=480000\,kg\cdot \left(\frac{-5\,m/s}{12\,s}\right)\)

Calculating the result:

\(\displaystyle\sf F=-200000\,N\)

Therefore, the engines applied a thrust of -200000 Newtons (N) to decelerate the plane. The negative sign indicates that the thrust is in the opposite direction of the motion.

Answer:

1)     R₁ > R₃ > R₂ correct B , 2) the wire that dissipates the most is wire 2

Explanation:

1) The resistance of a wire is given by the expression

          R = \(\rho \ \frac{l}{A}\)

where ρ is the resistivity of the material, l the length of the wire and A the area of ​​the wire

The area is given by

          A = π r² = π d² / 4

we substitute

         R = (ρ 4 /π)  \(\frac{l}{d^2}\)

the amount in parentheses is constant for this case

let's analyze the situation presented, to find the resistance of each wire

* indicate l₁ = l₂ and d₂ = 2 d₁

the resistance of wire 1 is

          R₁ = (ρ 4 /π)  \(\frac{l_1}{d_1^2}\)  

the resistance of wire 2 is

          R₂ = (ρ 4 /π) \frac{l_2}{d_2^2}

          R₂ = (ρ 4 /π)   \(\frac{l_1}{ (2 d_1)^2}\)

          R₂ = (ρ 4 /π ) \(\frac{l_1}{d_1^2}\)   ¼

          R₂ = ¼ R₁

* indicate that d₂ = d₃    and  l₃ = 2 l₂

           R2 = (ρ 4 /π)  \(\frac{l_2}{d_2^2}\)

the resistance of wire 3 is substituting the indicated condition

           R3 = (ρ 4 /π 2)  \frac{l_3}{d_3^2}

            R3 = (ρ 4 /π)   \(\frac{2 \ l_2}{d_2}\)

            R3 = 2 R₂

let's write the relations obtained

          R₁ = (ρ 4 /π)  \(\frac{I_1}{ d_1^2}\)

          R₂ = ¼ R₁

          R₃ = 2 R₂

let's write everything as a function of R1

           R₁ =(ρ 4 /π)   \(\frac{l_1}{d_1^2}\)

           R₂ = ¼ R₁

           R₃ = ½ R₁

the resistance of the wire in decreasing order is

           R₁ > R₃ > R₂

2) The power dissipated by a wire is

           P = V I

the voltage is

           V = I R

            I = V / R

substituting

          P = V² / R

therefore the power dissipated by each wire is

wire 1

           P₁ = V² / R₁

wire 2

           P₂ = V² / R₂

           P₂ = \(\frac{V^2}{ \frac{1}{4} R_1}\)

           P₂ = 4 P₁

wire 3

           P₃ = V² / R₃

           P₃ = \(\frac{V^2}{ \frac{1}{2} R_1}\)

           P₃ = 2 P₁

Therefore, the wire that dissipates the most is wire 2

He has to employ 31623  violin players.

The SI unit for sound intensity is W/m^2, although considering how humans hear sounds, the decibel (dB) scale of sound intensity is more useful. The logarithm of the intensity of a sound, as opposed to the intensity of a sound directly, is a better indicator of how human ears perceive sound.

Ten decibels (dB) are equal to every factor of ten in intensity.

For this case, a 70.0 dB sound is 45 dB louder than a 60 dB sound,  4.5 factors of 10 (10^4.5)  as intense.

Hence, if a single violin produces 25.0 dB sound intensity, to produce a robust sound intensity of 70.0 dB from violin section, he has to employ 10^4.5 = 31623  violin players.

Learn more about sound intensity here:

https://brainly.com/question/14695848

#SPJ1

the initial momentum of the system of block m1 and block m2 is

Pi= m1v1 + m2v2

the final momentum of the combine blocks is

Pf= (m1+m2)V

according to the law of convervation of momentum

Pi = Pf

m1v1 + m2v2 = (m1+m2)V

1.3 × 1 + 5m2 = 1.3 × 2 + 2m2

m2= 1.3/3 kg

Answer:

Explanation:

in parallel combination equivalent resistence =

1/R=1/R1 + 1/R2

1/2=1/15+1/30

1/2=1*2+1*1/30

1/R=3/30

R*3=30*1

R=30/3

R=10 ohm

Explanation:

Equilibrium resistance=1/R1 +1/R2

\( = \frac{1}{15} + \frac{1}{30} \\ = \frac{2 + 1}{30} \\ \frac{1}{r} = \frac{3}{30} \\ resistance \: = \frac{30}{3} \\ = 10 \: ohms\)

(a) The time it takes for you to change your displacement by 16 m east is 8.67 s.

(b) The time it takes for you to change your displacement by 26 m north is 35.3 s.

(a) The time it takes for you to change your displacement by 16 m east is calculated as follows;

s = vt + ¹/₂at²

where;

16 = 1.9 x cos(13.8)t

16 = 1.845t

t = 16/1.845

t = 8.67 s

(b) The time it takes for you to change your displacement by 26 m north is calculated as follows;

16 = 1.9 x sin(13.8)t

16 = 0.453t

t = 16/0.453

t = 35.3 s

Learn more about time of motion here: https://brainly.com/question/24739297

#SPJ1

\(\\ \sf\longmapsto (101010)_2\)

\(\\ \sf\longmapsto 0\times 2^0+1\times 2^1+0\times 2^2+1\times 2^3+0\times 2^4+1\times 2^5\)

\(\\ \sf\longmapsto 2+8+32\)

\(\\ \sf\longmapsto (42)_{10}\)

The particle's average speed after 10 seconds is 110 m/s, and its average velocity is zero.

When a particle is thrown upwards, its initial velocity is in the upward direction and its acceleration is in the downward direction due to gravity. The acceleration due to gravity is approximately 10 m/s² near the surface of the Earth. Therefore, the particle's velocity decreases at a rate of 10 m/s² until it reaches its highest point, where its velocity is zero. After that, the particle's velocity becomes negative and it starts to fall back to the ground.

To find the particle's average speed after 10 seconds, we need to calculate the total distance traveled by the particle in 10 seconds. The formula to calculate the distance traveled by a particle under constant acceleration is:

distance = initial velocity * time + (1/2) * acceleration * time²

Substituting the given values, we get:

distance = 60 m/s * 10 s + (1/2) * 10 m/s² * (10 s)²

distance = 600 m + 500 m

distance = 1100 m

Therefore, the average speed of the particle after 10 seconds is:

average speed = total distance / total time

average speed = 1100 m / 10 s

average speed = 110 m/s

To find the particle's average velocity after 10 seconds, we need to calculate the displacement of the particle in 10 seconds. Displacement is the change in position of the particle, which is equal to the difference between its final and initial positions. Since the particle is thrown upwards and then falls back to the ground, its displacement after 10 seconds is zero. Therefore, the average velocity of the particle after 10 seconds is also zero.

For more such questions on speed

https://brainly.com/question/13943409

#SPJ11

Answer:

The acceleration due to gravity on the planet Fergie is 0.0123 m/s^2.

Explanation:

We want to find the acceleration due to gravity on the planet Fregie. Let it be g m/s^2.

Now, the acceleration due to gravity is defined through the following equation:

\(mg = GMm/R^2\)

where m is the mass of an object on the surface of the planet, M is the mass of the planet, R is the radius of the planet, and G is the universal Gravitational constant.

Subsituting values for M = 6.23*10^23, R = 5.79*10^7, G = 6.67*10^(-11), we get

g = 0.0123 m/s^2.

Thus the acceleration due to gravity on the planet Fergie is 0.0123 m/s^2.

To know more about the acceleration due to gravity, see

https://brainly.com/question/88039

Answer:

A. The sum of all the forces acting on an object.

Answer:

hey so this website called quiz-let helps you it will give u the answer for every question i use it sometimes when im confused on a test.

It takes 0 seconds for the catcher to stop the ball and the ball travels 0 meters before stopping.

To find the time it takes for the catcher to stop the ball, you can use the equation:

time = distance / velocity

In this case, the distance is zero (since the ball is stopped) and the velocity is 21.80 m/s. Plugging these values into the equation gives us:

time = 0 / 21.80

time = 0 s

So, it takes 0 seconds for the catcher to stop the ball.

To find the distance the ball travels before stopping, you can use the equation:

distance = 1/2 * acceleration * time^2

In this case, the acceleration is the force applied to the ball divided by the mass of the ball, or (-360 N) / (0.18 kg) = -2000 m/s^2. The time is the time it takes the ball to stop, which we just found to be 0 s. Plugging these values into the equation gives us:

distance = 1/2 * (-2000 m/s^2) * (0 s)^2

distance = 0 m

So, the ball travels 0 meters before stopping.

Learn more about force, here:

https://brainly.com/question/13191643

#SPJ2

The maximum displacement = 0.0189 m

The Total energy of the system = 1.188 J

The Gravitational potential energy = 0.22 J

Let m be = Mass of the object = 1.2 kg

As given K = Spring Constant of the spring = 300 N/m

Let v denote = Maximum speed with which the body oscillates = 30 cm/s

Let 'x' be the maximum displacement of the body

x²= mv²/k=1.2* 0.3 /300= 0.0189

Total energy= kinteric energy+potential energy =kx²/2 + mv²/2

=1.188J

The Gravitational potential energy of the system is

E=Mgx=1.2*9.8*0.0189

To learn more about force constant refer to:

https://brainly.com/question/25313999

#SPJ1

The 1.2 kg object's maximum displacement when it is suspended from a spring with a 300 N/m force constant oscillates at a maximum speed of 30 cm/s. This displacement is equal to 0.0189 m.

When the object is displaced to its maximum, the system's total energy is 1.188 J.

The energy of gravity is equal to 0.22 J.

Allow m to be equal to 1.2 kg, the object's mass.

K = Spring as stated. Springs have a constant of 300 N/m.

the body can oscillate at a maximum speed of 30 cm/s (let v signify this).

Suppose that "x" represents the body's largest displacement.

x²= mv²/k=1.2* 0.3 /300= 0.0189

Total energy = interstellar energy + potential energy = kx2/2 + mv2/2

=1.188J

According to the system's gravitational potential energy,

E=Mgx=1.2*9.8*0.0189

To learn more about force constant refer to:

brainly.com/question/25313999

#SPJ1

By supplying the fundamental knowledge required to create new instruments and techniques for medical use, physics enhances our quality of life

From can openers, light bulbs, and mobile phones to muscles, lungs, and brains; from paintings, piccolos, and pirouettes to cameras, vehicles, and cathedrals; from earthquakes, tsunamis, and storms to quarks, DNA, and black holes, physics aids us in understanding the workings of the world around us.

The science of physics is the most fundamental and has many applications in contemporary technology. Because it makes it possible for smartphones, computers, televisions, watches, and many other modern technologies to function automatically, physics is crucial to modern technology.

To learn more about physics please visit-
https://brainly.com/question/14338730
#SPJ9

Answer:

Yes

Explanation:

Within the Earths Roche is our mass and body.

Take into account that the momentum is given by:

where m is the mass and v the speed of motion.

In order to calculate p it is necessary to find the value of v. Use the following expression for the kinetic energy:

In this case, you have:

K = 64J

m = 2 kg

Solve for v and replace the previous values:

Now, replace the value of v and m to find the momentum:

Hence, the momentum is 16 kg*m/s

Answer:

C

Explanation:

Sled A has more potential energy because it's mass is 100 kg, and it is higher up than Sled B. The more high up the sled is and the lighter it is, the faster it gets, it creates more and more potential energy.

Hope this helps!

The  Force acting on charge A will be 0.036N.

Coulomb's law is the force of attraction or repulsion acting on straight line is directly proportional to the charge place on that line and inversly proportional to the square of seperation between them.  

F= kq1q2/r²

where F is the electrostatic force ,q are the point charges , K is coulomb constant , r is seperation between the charges.

Value of Coulomb's constant is 8.98×10⁹Nm²/C².

In the question ,we have given the sides of the triangle ,we can consider them as seperation also ,

r=5cm = 5×10-²m

the charge is 10-⁷C.

F= 9×10⁹×1×10-¹⁴/25×10-⁴

F= 0.036N

So, the force acting on Charge A is

0.036 N.

to learn more about Coulomb's Law click herehttps://brainly.com/question/506926

#SPJ9

We have the following data:

fo: frequency observed; fo = 37700 Hz

fs: actual frequency emitted; fs = 35000 Hz

vo: velocity of observer; vo = 0 m/s

v: velocity of sound; v = 350 m/s

We need to solve for the velocity of the car, so let's call that vs.

Doppler effect equation:

fo/fs = (v+vo)/(v+vs)

Now let's substitute all the variables we know:

37700/35000 = (350+0)/(350+vs)

Let's isolate vs:

350+vs = 35000(350)/37700

vs = 35000(350)/37700 - 350

vs = -25.066 m/s

Since velocity of the car is negative in relation to the cop, this means the car is approaching the cop. Its speed is |vs| = 25.066 m/s

The property that is oscillating would be the electric and magnetic fields.

For light, the property that is oscillating or vibrating at a particular frequency is the electric and magnetic fields.

Light is an electromagnetic wave, which means that it consists of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of wave propagation.

The frequency of the wave corresponds to the number of complete oscillations of the electric and magnetic fields that occur per second, and is measured in hertz (Hz).

More on the properties of light can be found here: https://brainly.com/question/9601852

#SPJ1

Answer:

0.25 kg

Explanation:

p = mv

2 = m(8)

2/8 = m(8)/8 *cancels

m = 1/4 OR 0.25 kg

The distance between two charges is 1.075 cm.

The distance between the charges is calculated using Coulomb's law as shown below;

F = kq1q2/r²

Fr² = kq1q2

r² = kq1q2/F

r = √( kq1q2/F)

where;

r = √( 9 x 10⁹ x 20 x 10⁻⁶ x 18 x 10⁻⁶/2.8 x 10⁴)

r = 0.01075 m

r = 1.075 cm

Thus, the distance between two charges is 1.075 cm.

Learn more about distance between charges here: https://brainly.com/question/27826314

#SPJ1