To give the dependence of the radius
of the electron orbit in
hydrogen-like systems
through the first Bohr radius
of hydrogen (a\(a_{0}\) = 0.529 Å),
the charge number of the nucleus and
the main quantum number.
Determine the radius of the first
Bohr orbit for the Li++ ion.
In what order of excitation
will the radius of the electron orbit in
the Li++ ion be closest to
the first Bohr radius
of hydrogen?

The number of bright fringes will be seen inside the central diffraction maximum exists 8 1.92×10⁹.

Diffraction exists a second wave that emerges from the different parts of the same wave.

Interference exists emerging of two waves from various sources, producing different wave fronts.

The angular width of the central maxima is 2 λ/ d

Where d exists the slit width, and D exists the separation between the two slits.

In case of Interference, the angular width of the fringe

So, y = 2D/ d

Where, D exists 1.44 mm, d exists 0.08 mm

y = 2 \(*\) 1.44/ 09.08

y = 36m.

Substituting the values in the above equation we get, y = 36m.

We get the value of n will be 1.92 × 10⁹.

Therefore, the value of n exists 1.92 × 10⁹.

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Answer:

i did not go to isreal

Explanation:

Answer:

i've actually been so maybe this will  help you

Explanation:

My favorite thing about Israel was their beaches. The water is really beautiful and clear as day. I really enjoyed the beach because back home where im from the beach water is very dirty, so i felt like being in Israel with the clear waters just made me feel clean and whole . I had alot of food there but their hummus was amazing, it was the best i ever had. From that experience i learned to take care of myself. In Israel , i felt like a different person and i noticed that alot of people would come out and enjoy what they have which is something that not alot of us do very often. To this day i make sure that i spend time with myself and make sure im at a good mindset. its ok to treat yourself :)

Answer:

Explanation:

The centripetal acceleration:

aₙ = F /m = 125 /19 ≈ 6.6 m/s²

The speed of a proton that is accelerated from rest through an electric potential difference of 144 V is 160 km/s.

Proton Electric field system as an isolated system for energy. Applying energy conservation: ΔK+ΔU=0

(1/2​ mp× vf² − 1/2mp​× vi² )−qp×​ ΔV=0. Where vi=0 since the proton is accelerated from rest, so, (1/2​ mp× vf²)−qp×​ ΔV=0. The electric potential difference,∆V= 144 volts. Now solving for vf=[(2×qp×∆V)/mp]^½ =[(2×1.602×10⁻¹⁹×144)/1.674×10⁻²⁷]^½  =16×10⁴ m/s = 160 km/s.

A proton has about 2000 times the mass of an electron, so it would have to travel at about ¹/₂₀₀₀ the speed of an electron to have the same momentum — 3.90×10⁶m/s2000 ≈ 2000 m/s and the same wavelength.

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The total amount of passive losses that may be deducted during the current year is $4,000. In order to determine the total amount of passive losses that may be deducted during the current tax year, we need to first calculate the net passive loss.

To do this, we need to subtract the passive income from the passive losses for each type of limited partnership separately.

For the publicly traded limited partnership, the net passive loss is $9,000 ($12,000 passive income - $9,000 passive loss = $3,000 net passive income).

For the nonpublicly traded limited partnership, the net passive loss is $4,000 ($14,000 passive income - $18,000 passive loss = -$4,000 net passive loss).

Since there is a net passive loss for the nonpublicly traded limited partnership, we can use this to offset any passive income from other sources.

Therefore, the total amount of passive losses that may be deducted during the current year is $4,000.

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The minimum speed to cross the river safely is 6 m/s.

We may use kinematical equations of motion to calculate the unknown parameters when a body moves along a two-dimensional route in the air.

In the equation of motion we have,

v = u + at

v² = u² 2 as

s = ut + 1/2 at²

Where, u = Initial velovity

            v = Final velocity

            s = Displacement

            a = Acceleration

            t = Time

Given:

Horizontal distance = 22 ft = 6.7 m

Vertical distance = 20 ft = 6.1 m

Let v = be the horizontal speed

t = be the time of flight

Consider the equation of motion in the vertical direction, under the influence of the gravity.

s = ut + 1/2 at²

6.1 = 0 + 1/2 (9.81) (t²)

t = 1.12 sec

Brady was in the air at this period, making it the same amount of time needed to go 6.7 meters horizontally. Since we don't account for the impact of air resistance, the horizontal velocity throughout this period is constant, allowing us to say:

Velocity = Distance/ Time

   v = 6.71/1.12

   v = 5.99 = 6 m/s

Therefore, the minimum speed to cross the river is 6 m/s.

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I understand that the question you are looking for is "In 1780, in what is now referred to as "Brady's Leap," Captain Sam Brady of the U.S. Continental Army escaped certain death from his enemies by running over the edge of the cliff above Ohio's Cuyahoga River, which is confined at that spot to a gorge. He landed safely on the far side of the river. It was reported that the leaped 22 ft (≈ 6.7 m) across while falling 20 ft (≈6.1 m).

What is the minimum speed with which he'd need to run off the edge of the cliff to make it safely to the far end of the river?"

A high CVP reading indicates an elevated pressure in the central veins, which can be a sign of several medical conditions such as heart failure, dehydration, or low cardiac output.

CVP stands for Central Venous Pressure, which is the pressure of blood in the central veins (such as the superior vena cava or the inferior vena cava) that return blood to the heart. Central venous pressure is frequently used as an examination of hemodynamic status, especially in the intensive care unit.

A healthcare professional should interpret the significance of a high CVP reading in the context of the patient's medical history and other test results.

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340.14 \(\frac{meters}{second}\)= \(\frac{m}{s}\)          ☆                ☆                ⭐︎           ★             ★           ★            ★                ★

                            ☆               ★                     ★                    ☆              ★             ★        ☆          ⭐︎                        ★               ☀︎                   ✏☆                        ☽          ☂︎           ☔︎                

Meters per second is the unit that we get after dividing meters per seconds.

That's the unit we get after dividing distance by time.

I Hope it Helps!

PLEASE mark Brainliest!

:-) :-)

Hard glass is a type of glass characterized by its high resistance to thermal and mechanical stress. It is commonly used in scientific and industrial applications. The components of glass can be classified into formers, intermediates, and modifiers.

Hard glass, also known as borosilicate glass, is a type of glass that possesses high resistance to thermal expansion and mechanical stress. It is composed mainly of silica (SiO2) and boron oxide (B2O3), which act as formers in the glass structure. The formers provide the basic framework of the glass and contribute to its high durability and thermal stability.

In addition to formers, glass can also contain intermediates and modifiers. Intermediates, such as alumina (Al2O3) and magnesia (MgO), help in reducing the melting point of the glass and improve its workability during the manufacturing process. Modifiers, such as sodium oxide (Na2O) and calcium oxide (CaO), alter the properties of the glass, such as its refractive index and chemical resistance.

By combining the right proportions of these components, glassmakers can produce glass with specific characteristics suitable for various applications, ranging from laboratory equipment and optical lenses to household items and industrial containers.

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Answer:

cell

Explanation:

here are all the symbols-

hope this helps, take care and stay safe

Answer:

Explanation:

Elastic potential energy of a spring= 1/2 × Spring constant × displacement²

following calculations you will get ur answer!!

Answer:

It applies to diverse phenomena

Explanation:

not sure if u need one, just ask if you do :D

Answer:

Being strictly geometric in its origin, the inverse square law applies to diverse phenomena. Point sources of gravitational force, electric field, light, sound, and radiation obey the inverse square law.

Explanation:

Answer:

(C) 700 N

Explanation:

The given parameters are;

The mass of the mountain climber, m = 100 kg

The angle formed by the rope with the horizontal, θ = 45°

The gravitational field strength, g = 10 N/kg

The weight of the man, W = m × g

∴ W = 100 kg × 10 N/kg = 1,000 N

At equilibrium, we have;

The downward force, the weight of the man, W = The upward force, the vertical component of the tension on the two halves of the rope

We have;

W = T × sin(θ) + T × sin(θ)

∴ 1,000 N = 2 × T × sin(45°)

Therefore, we have;

T = 1,000 N/(2 × sin(45°)) = 707.106781 Newtons

Therefore, the tension in the rope is closest to (approximately) 700 N.

The vector B has a magnitude of 25 m and makes an angle of -30 degrees with the +x-axis.

A vector is a mathematical object that has both magnitude and direction. It can represent physical quantities such as force, velocity, and acceleration, as well as abstract concepts such as direction and space. Vectors are often used to represent the change in position or movement of an object over time, or to represent the relationship between two or more points. Vectors can also be used to describe the shape of an object, as well as the relationships between objects.

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Answer:

Hypothesis helps in making an observation and experiments possible. It becomes the start point for the investigation. Hypothesis helps in verifying the observations. It helps in directing the inquiries in the right direction.

Explanation:

Answer:

Below

Explanation:

The purpose of a hypothesis is to provide a tentative explanation or prediction about a phenomenon or relationship between variables that can be tested through research. A hypothesis is an educated guess or statement that is based on existing knowledge, observations, and assumptions about a particular phenomenon.

The primary purpose of a hypothesis is to guide the research process by providing a clear and testable direction for data collection and analysis. It helps researchers to formulate research questions, design experiments, and interpret the results of their studies.

Hypotheses are typically used in scientific research, but they can also be used in other fields such as social sciences, business, and engineering. A well-formed hypothesis can help to narrow the focus of research and increase the likelihood of obtaining meaningful results.

The minimum stimulus required to trigger an action potential is known as the "threshold." The threshold refers to the minimum level of depolarization that a neuron or muscle cell must reach to initiate an action potential.

In neurons, the threshold is typically around -55 millivolts (mV) relative to the resting membrane potential. When the cell membrane reaches this threshold voltage, usually due to the influx of sodium ions, it triggers a rapid depolarization and the generation of an action potential. If the membrane potential does not reach the threshold, no action potential is initiated.

The threshold concept is crucial in understanding how neurons transmit signals and communicate with each other. It ensures that only strong enough stimuli, such as sensory inputs or signals from other neurons, can initiate the generation and propagation of action potentials, allowing for precise and selective signaling in the nervous system.

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Answer:

I hope this helps

Explanation:

homogeneous mixture

The horizontal distance from the point directly below C to where the skier lands is 54.2 m.

Applying conservation of energy and conservation of momentum principles.

First, let's find the initial potential energy of the skier at point A:

PE1 = mgh1

= (80 kg)(9.81 m/s^2)(h1)

Next, let's find the final kinetic energy of the skier at point C:

KE2 = (1/2)mv2^2

= (1/2)(80 kg)(42 m/s)^2

Since there is no friction,

PE1 = KE2 + PE3

where PE3 is the potential energy of the skier at point C:

PE3 = mgh3 = (80 kg)(9.81 m/s^2)(10 m)

Substituting the values, we get:

(80 kg)(9.81 m/s^2)(h1) = (1/2)(80 kg)(42 m/s)^2 + (80 kg)(9.81 m/s^2)(10 m)

to determin h1,

h1 = (1/2)(42 m/s)^2/9.81 m/s^2 + 10 m

h1 = 144.8 m

Therefore, the height of the hill is 144.8 m.

Since there is no external force acting on the skier in the horizontal direction, the horizontal momentum is conserved:

mvi = mvx

vx = v2cos(25°)

Substituting the values, we get:

vi = (42 m/s)cos(25°)

vi = 37.9 m/s

Therefore, the initial horizontal velocity of the skier at point C is 37.9 m/s.

to determine time of flight:

h = (1/2)gt^2

t = √(2h/g)

t = √(2(10 m)/(9.81 m/s^2))

t = 1.43 s

applying the horizontal velocity and the time of flight to find the horizontal distance traveled:

d = vixt

d = (37.9 m/s)(1.43 s)

d = 54.2 m

The horizontal distance from the point directly below C to where the skier lands is 54.2 m.

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Answer:

To solve this problem, we can use the conservation of energy and the conservation of momentum. We can assume that there is no friction or air resistance, so the total mechanical energy of the skier is conserved throughout the motion.

Let's denote the initial height of the hill as h1, the height of point C above the ground as h2, the horizontal distance from point A to the point directly below C as x, and the angle of the skier's velocity vector with respect to the horizontal as θ.

First, we can calculate the speed of the skier at the bottom of the hill, point B, using conservation of energy:

mgh1 = (1/2)mvB^2 where m is the mass of the skier and vB is the speed of the skier at point B.

Solving for vB, we get:

vB = sqrt(2gh1)

Next, we can calculate the velocity of the skier at point C using conservation of energy:

mgh1 = (1/2)mvB^2 + (1/2)mvC^2

where vC is the speed of the skier at point C.

Solving for vC, we get:

vC = sqrt(2gh1 + vB^2)

We can also express the velocity vector at point C in terms of its x and y components:

vCx = vCcos(θ)

vCy = vCsin(θ)

Using conservation of momentum, we can find the horizontal distance x from the point directly below C to where the skier lands:

mvCx(h2/(-vCy)) = mvCx(t) + (1/2)gt^2

where t is the time taken for the skier to reach the ground and we have used the fact that the vertical displacement from point C to the ground is h2. We can solve for t by substituting vCy = vC*sin(θ) and solving the quadratic equation:

(1/2)gt^2 + vC*sin(θ)*t - h2 = 0

Solving for t, we get:

t = (-vCsin(θ) + sqrt(vC^2sin(θ)^2 + 2gh2))/g

Finally, we can substitute this expression for t into the equation for x to get:

x = vCx*t

Substituting the expressions for vCx, t, and vC, we get:

x = (vC^2sin(θ)cos(θ) - sqrt(vC^4sin(θ)^2cos(θ)^2 + 2gh2vC^2sin(θ)^2))/(g*sin(θ))

Plugging in the given values, we get:

x ≈ 184.5 meters

Therefore, the horizontal distance from the point directly below C to where the skier lands is approximately 184.5 meters.

Answer:  The answer should be

A). The alpha particles passed straight through the foil.

Answer:

D

Explanation:

A.1.2°C

The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy.

To find internal energy, you have to add the heat added in the system and work done in the system because the work done is not lost but rather it is added in the system.

Step 1

a)let

to add the energy it must have the same measure unit, so let's convert calories into Julies

remember that

b) now, replace in the formula

now, we have the change of internal energy

Step 2

now, let's find the change in temperature

Use the calorimetry formula.

where m is the mass, Q = heat energy, c = specific heat capacity, and ∆T = change in temperature

a)

let

now,

so, the answer is

A.1.2°C

The adjustment that would have the greatest impact on the reorder point would be reducing the standard deviation of the feed prep time.

By reducing the standard deviation of the feed prep time, the farm would be able to order the feed earlier, thus reducing the chance of running out of feed. This would have the effect of lowering the reorder point, as there would be less time between when the feed is ordered and when it arrives.

Additionally, reducing the standard deviation of the feed prep time would be more effective than trying to reduce the standard deviation of the grain usage, as the former is more controllable and can be adjusted more precisely.

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Answer:

please find attached file

Explanation:

The magnitude of the vector is 7.27m .

The magnitude of a vector is the numerical value of the vector. It is represented by the length of the vector.

When a vector is resolved in two components then it is given by formula,

\(A = \sqrt{Ax^{2}+Ay^{2} }\)

Here,

\(A_{x} = 6.15\\A_{y} = 3.88\)

A = \(\sqrt{6.15^{2}+3.88^{2}\)

A = 7.27m

Hence magnitude of the vector is 7.27m .

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Answer: soccer ball

Explanation:

The kicker has the potential energy and as the kicker kicks the ball that potential energy turns to kinetic

Answer:

Fastest: Norco

Slowest: Mt luna

The absorption of energy occurs in endothermic reactions. The correct option is D.

The type of chemical reaction that results in the absorption of energy is endothermic. In an endothermic reaction, energy is absorbed from the surroundings, resulting in an increase in the internal energy of the system.

This means that the products of the reaction have more energy than the reactants, and the reaction requires an input of energy to proceed.

Examples of endothermic reactions include the reaction of baking soda and vinegar, the melting of ice, and the reaction of ammonium nitrate and water.

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The runner's center of mass will be  0.40 meter raised during the jump.

Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.

Initial vertical speed of the Olympic  runner = 2.8 m/s

Acceleration due to gravity = 9.8 m/s²

Mass of the Olympic  runner = 65 kg

Hence, the runner's center of mass will be raised during the jump

=  (Initial vertical speed )² ÷ (2 ×  Acceleration due to gravity)

= 2.8²/(2 ×9.8) meter

= 0.40 meter.

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Answer:

electromagnetic radiation hopefully

The net force on a crate sliding at an unchanging speed when pushed with a steady force of 75 n is zero.

The total of all forces exerted on an object is known as the net force. A mass can accelerate due to net force. A body is subject to another force whether it is at rest or in motion. When there are a lot of forces acting on a system, the term "net force" is employed.

The total force acting on an object is its net force. Newton's second law, which states that F = ma, where F represents the net force, can be used to compute the net force. The object's mass is given by m. Acceleration is a.

The vector sum of all forces acting on an object is known as the net force. As a result of the fact that a force is a vector and that two forces with identical magnitudes and opposing directions cancel each other out, the net force is the sum of all the forces, or put another way, the net force is the sum of all the forces.

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