a beam of x-rays of wavelength 1.2 nm is diffracted by a set of planes in a crystal whose separation is 3.3 nm. what is the smallest angle (in rad) between the beam and the crytal planes for which a reflection occurs?

Answer:

Explanation:

(1) The surface area of the electrodes: Larger the surface area of the electrodes, less is the internal resistance.

(2) The distance between the electrodes: As the distance between the electrodes increases, the internal resistance of cell also increases.

The formula is given by

\(\\ \rm\Rrightarrow R=\rho\dfrac{\ell}{A}\)

On these three factors resistance depends

also

According to ohms law

Resistance also depends on voltage and current

SWOT Analysis: Apple Inc. has a strong brand image and innovative product portfolio, but faces challenges such as high product prices and intense competition.

PESTEL Analysis: Apple Inc. is influenced by global political stability, economic conditions, changing consumer preferences, rapid technological advancements, environmental sustainability practices, and legal regulations.

Porter's Five Forces Analysis: Apple Inc. faces moderate threats of new entrants and supplier bargaining power, high buyer bargaining power and threats of substitute products, and intense competitive rivalry.

Value Chain Analysis: Apple Inc.'s value chain includes primary activities like logistics, operations, marketing, and support activities such as procurement, technology development, and human resource management.

SWOT Analysis of Apple Inc.:

PESTEL Analysis of Apple Inc.:

Porter's Five Forces Analysis of Apple Inc.:

Value Chain Analysis of Apple Inc.:

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Answer:

C.

Explanation:

""""""" Twice,Half """"""

A big wheel with twice the circumference of a small wheel will rotate with the force and the speed of the small wheel.

C) twice, half

A big wheel with twice the circumference of a small wheel will rotate with twice the force and half the speed of the small wheel.

It is the round circle found on the outside angle of the machine.

It is the adjusted barrel or rod-like portion put on the interior of the machine that's connected to the wheel and makes a difference to advance development.

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Complete question :

Assume the acceleration of the object is

a(t) = −32

feet per second per second. (Neglect air resistance.)

A balloon, rising vertically with a velocity of 16 feet per second, releases a sandbag at the instant when the balloon is 80 feet above the ground.

Answer:

2.80seconds

Explanation:

Given that

Acceleration (a) = - 32

Height (s) at which sandbag was dropped = 80feet, therefore, distance (h) = - 80

Initial Velocity (Vo) = 16, which is the Velocity of the balloon at the time of releasing the sandbag.

Using the second equation of motion:

H = Vot + 1/2at^2

Where t= time taken

Inputting our values :

-80 = 16t + 0.5(-32)(t^2)

-80 = 16t - 16t^2

-16t^2 + 16t + 80 = 0

-t^2 + t + 5 = 0

Using the quadratic formula:

(-b±√b^2 - 4ac) / 2a

Where : a = - 1, b = 1 and c = 5

Using the quadratic equation solver:

[-1±√1^2 - 4(-1)(5)) / 2(-1)]

The roots are:

2.7912878474779

-1.7912878474779

Discard the negative root,

Therefore, time taken = 2.7912878474779 = 2.80s

Considering the coordinates of the radars as well as the direction of the object in order to determine the object's position in terms of distance and angle. Sincе thе radars arе situatеd at (0,0) and thе sеcond radar is on thе еast sidе of thе first onе, wе can assumе that thе first radar is locatеd on thе x-pivot and thе sеcond radar is locatеd on thе positivе y-hub.

Lеt's say thе objеct is dеtеctеd at coordinatеs (x, y). The objесt's y-coordinativity will be negative and its x-coordinativity positive as it approaches the southern direction in the first quadrant.

We can use the distancе formula to determine the object's diameter from its origin (0, 0):

Distancée = (x + y) 2 The angle can be calculated with trigonometry. The angle can be summarized as:

= arctan(y/x) ii) We must consider the circles of overlap for each radar in order to calculate the overlap from the radar signal intersection in the first quadrant.

Due to the fact that both radars have distinctive overlap and divide the covered area into circles, the overlapped area will be the intersection of these circles.

Thе ovеrlapping arеa can bе calculatеd by finding thе arеa of thе intеrsеction of two circlеs. The formula for the area of the intersection of two circles can be complex and depends on the specific radii and dimensions that exist between the circles' centers.

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From the given situation we conclude that the plant with the smooth seeds is homozygous for the dominant trait.

There is no possibility of having children with wrinkly seeds. Only when the parent plant with smooth seeds is homozygous for the dominant characteristic is this conceivable. As a result, the parents plants' offspring will only exhibit the smooth characteristic, and there won't be any possibility of wrinkled seeds.

Gregor Mendel, an Austrian monk, developed a novel theory of inheritance based on his experimental work with pea plants in the 1860s. Most people thought heredity resulted through the blending of parental "essences" before Mendel, much as how combining blue and yellow paint will yield a green hue. Mendel, on the other hand, thought that each distinct unit (or gene) in an individual's genome acted independently to produce heredity, which is the product of discrete units of inheritance. This Mendelian idea holds that it is through the transmission of these units that a characteristic is passed on. An individual receives one gene for every parent, resulting in a pair of two genes for any given trait.

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Answer:

the answerrrrrr is d

Explanation:

edmentum

Answer: it is actually B. :)

Explanation:

Noise can distort analog signals making them unreliable.

Noise can actually bury, distort or cause interference to the analog signal carrying the intelligent information.

Hence, the correct answer is B.

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Answer:

Explanation:

The mass of the object can be found by using the formula

\(m = \frac{f}{a} \\ \)

where

f is the force

a is the acceleration

From the question we have

\(m = \frac{200}{500} = \frac{2}{5} \\ \)

We have the final answer as

Hope this helps you

ANSWER:

1) angular momentum

STEP-BY-STEP EXPLANATION:

The moment the ice skater pulls her hands, she begins to spin slower, then turns very fast when she brings her arms out to her sides.

Here we can see applied the fundamental law of conservation of angular momentum. where rotational speed and shape are related, therefore there is no change in angular momentum.

The type of electromagnetic wave has a wavelength of approximately 10-10 meters and a frequency of 1018 hertz is X-rays.

It is the wavelength of extremely short wavelength and high frequency.

Wilhelm Röntgen is typically the one credited for the discovery of X-Rays in 1895.

Unlike light it has higher energy and can pass through most objects, including the body also, like medical X-rays

In medical X-rays, there is an Xray detector where the image of the body is formed. One type of x-ray detector is photographic film.

The x-rays image formed in this process are called radiographs.

properties of X rays-

1. Properties of X-Rays

The X-Rays properties are given below:

1. They can easily travel in vacuum's.

2. They penetrate the media easily

3. Require high voltage to capture X-rays

4. In free space, they travel in straight line

5. They are not easily refracted. X-rays are not affected by the electromagnetic field.

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Answer: 11 m/s

vinitial=2 m/s

time=3 s

acceleration = 3 m/s^2

vfinal = ?

The key here is that it is a constant acceleration, so we can use the constant acceleration equations. The easiest one to use would be:

vfinal=vinitial + a*t

We need vfinal, so algebraically we are ready to put in numbers into the equation:

vfinal=vinitial + a*t = 2 m/s + (3 m/s^2)*(3 s ) = 11 m/s is the final velocity

The ball's final velocity is 11 m/s

From one of equations of kinematics for linear motion

We have that

v = u + at

Where v is the final velocity

u is the initial velocity

a is the acceleration

and t is the time

From the given information in the question

u = 2 m/s

t = 3 secs

a = 3 m/s²

Putting these parameters into the above formula

v = u + at

We get

v = 2 + (3×3)

v = 2 + 9

v = 11 m/s

Hence, the ball's final velocity is 11 m/s

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The total resistance in the circuit is 144Ω, and the total current is approximately 0.694A.

To find the total resistance and total current in the given circuit, let's break down the steps:

1. Delta to Wye Transformation:

  - Identify the resistors in the delta configuration: 200Ω, 40Ω, and 120Ω.

  - Apply the delta to wye transformation to convert the resistors into a wye configuration:

    - R₁ = (Rb * Rc) / (Ra + Rb + Rc) = (40 * 120) / (200 + 40 + 120) = 16Ω

    - R₂ = (Ra * Rc) / (Ra + Rb + Rc) = (200 * 120) / (200 + 40 + 120) = 96Ω

    - R₃ = (Ra * Rb) / (Ra + Rb + Rc) = (200 * 40) / (200 + 40 + 120) = 32Ω

  - Replace the delta configuration with the wye configuration using the calculated values: R₁ = 16Ω, R₂ = 96Ω, R₃ = 32Ω.

2. Total Resistance Calculation:

  - The total resistance (RT) in the circuit is the sum of the individual resistances:

    - RT = R₁ + R₂ + R₃ = 16Ω + 96Ω + 32Ω = 144Ω.

3. Total Current Calculation:

  - The total current (I) can be calculated using Ohm's Law: I = V / RT, where V is the voltage across the circuit.

  - Given that the voltage (V) is 100V, the total current (I) is: I = 100V / 144Ω = 0.694A.

Therefore, the total resistance in the circuit is 144Ω, and the total current is approximately 0.694A.

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Answer: metre per second

The unit of speed is the metre per second, but the most common speed in everyday usage is the kilometre per hour in the US and the UK, miles per hour.

We do not have information about the direction of the ant's movement, so we cannot determine its velocity. We can only calculate its speed, which is 0.42 mm/s.

The calculation for the ant's average speed or velocity requires a long answer as there are a few steps involved. First, we need to determine the distance the ant has traveled per unit of time. In this case, the ant moved 30.1 mm in 72 seconds.

To calculate the ant's speed, we need to divide the distance traveled by the time it took to travel that distance. In this case, we would divide 30.1 mm by 72 seconds:

Speed = Distance ÷ Time
Speed = 30.1 mm ÷ 72 s

The answer is approximately 0.42 mm/s. Therefore, the ant's average speed is 0.42 mm/s.

If we want to determine the ant's velocity, we need to consider the direction of its movement. Velocity is a vector quantity that describes the rate of change of an object's position in a particular direction. If the ant moves in a straight line, its speed and velocity will be the same. However, if the ant changes direction during its movement, its velocity will differ from its speed.

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The divergence of f is 2zx^2 - 17zx + 1, and the curl of f is -9x i + j - 4z^2 k.

We have the vector field:

f = (x - 4zx^2) i + (z - 9xy) j + (z^2x^2) k

The divergence of f is given by:

div(f) = ∂f/∂x + ∂f/∂y + ∂f/∂z

= (1 - 8zx) + (-9x) + (2zx^2)

= -9x + 2zx^2 - 8zx + 1

= 2zx^2 - 17zx + 1

The curl of f is given by:

curl(f) = (∂fz/∂y - ∂fy/∂z) i + (∂fx/∂z - ∂fz/∂x) j + (∂fy/∂x - ∂fx/∂y) k

= (-9x) i + (1 - 0) j + (-4z^2) k

= -9x i + j - 4z^2 k

Therefore, the divergence of f is 2zx^2 - 17zx + 1, and the curl of f is -9x i + j - 4z^2 k.

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It is a true statement that Rotating frames of reference cause objects to accelerate toward the center of the circle, creating centripetal force.

The centripetal force is the force that acts towards the center of the motion. We knw that it is this centripetal force that keeps an object moving in a circular path. It prevents the object from being thrown out.

Hence, we can see that in spite of the opposing forces, what would stop the object from falling out of the field of the circular motion is the centripetal force that acts on it in the circular path.

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The potential difference across the lamp as calculated is 116.6 volts.

Given: Resistance (R) = 136 ohms, Power (P) = 1.00 x 10² W. We need to calculate the potential difference across the lamp. We know that; Power = (Potential Difference)² / Resistance.

We can write the above formula as, Potential Difference = √(Power x Resistance)By substituting the values in the above formula; Potential Difference = √(100 x 136)Potential Difference = √13600Potential Difference = 116.6 volts.

Therefore, the potential difference across the lamp is 116.6 volts.

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In this, two frictionless, smooth inclined surfaces that have the same angle with the horizontal (57.7°) are connected to one another. Blocks are placed on the inclined surfaces.

The left one is white, whereas the right one is black. Then, a frictionless pulley is present here at the edge, and the two blocks are attached to one another using a light string weight made of the white blocks. Assume there are lots of M W. Its weight will therefore be M W G. The black block's weight. M. B. G. Component Here would be that.

This will also be 57.7 degrees if the angle is 57.7. Additionally, this component is M W G, costs 57.7 degrees, and runs horizontally. That is 57.7° M W G Sign. Next, the element perpendicular to this inclination surface for this black block. This part is B G Costs 57.7° and a component along the spring-bound incline of mbG sign 57.7° The blocks are shown to be travelling with an acceleration of A in the direction of the left.

Given to us are MB square markings traveling at 1.5 meters per second. The bulk of this white blog weighs 3.19 kilograms. It is absent. We need to locate it. First, as the white vlog is moving down, use the free body diagram of the white block. Therefore, M W G sign 57.7 degrees force will be more than that tension T for this white block. Thus, using Newton's second rule of motion, the net force will be equal to.

The block's mass times its acceleration equals the block's net force. Using a free body schematic of the ascending black bloc, continue. T will therefore be more for it. Therefore, this equals p – Mbg. indication of 57.7 degrees. Using Newton's second rule of motion, which is equal to M B A, once more This is equation #1, that was equation #1, this is equation #2, this is one, and this is equation #3. hence, adding 1 and 2. It is obvious that the tension will end and that G signed 57.7° will be seen as an exit signal.

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Answer:

Electromagnetic waves.

Explanation:

Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.

Antenna size of TVs and cell phones is related to the size of the electromagnetic waves used by the technology.

This ultimately implies that, size of the electromagnetic waves plays a significant role in choosing the appropriate size for antennas used in all telecommunications device such as television, mobile phone, radio, satellite, etc.

Generally, the most commonly used electromagnetic wave technology in telecommunications is radio waves.

Radio waves can be defined as an electromagnetic wave that has its frequency ranging from 30 GHz to 300 GHz and its wavelength between 1mm and 3000m. Therefore, radio waves are a series of repetitive valleys and peaks that are typically characterized of having the longest wavelength in the electromagnetic spectrum.

Basically, as a result of radio waves having long wavelengths, they are mainly used in long-distance communications such as the carriage and transmission of data.

Answer:

b) downward. Correct choice

Explanation:

Projectile Motion

It's known as the type of motion that experiences an object that is projected near the Earth's surface and moves along a curved path exclusively under the action of gravity.

The gravity manifests through the acceleration of gravity g whose value is \(9.8 m/s^2\) and points downward. The object will eventually fall to the ground at a time and speed which depends on the initial speed and launch angle.

When the bullet is fired regardless of the initial speed and angle, the only acceleration of the system is g, thus:

b) downward. Correct choice

The acceleration acts on the bullet will be the acceleration due to gravity that is g and has a downward direction.

Since the bullet is fired at an angle of 45 so the bullet will travel in a projectile. So every point in time the acceleration due to gravity will act on the bullet.

After some point in time, the bullet will come to the surface of the earth as the energy in the bullet will reduce.

As we know that anything present on the earth is under the influence of the earth's gravity.

So the fired bullet will experience acceleration due to the gravity of the earth and the direction of the acceleration will always be downwards.

So the bullet will eventually fall to the ground at a time and speed which depends on the initial speed and launch angle.

Thus the acceleration acts on the bullet will be the acceleration due to gravity that is g and has a downward direction.

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Answer:

2NH3 --> N2 + 3H2 decomposition

The Jovian planets are formed from materials different from the terrestrial planets for the reason that gaseous Jovian planets, formed farther away from the heat of the Sun, are formed from light weight nebulae "dust."

A Jovian planet, also known as a gas giant, is a huge planet that has a primarily gaseous composition. The Jovian planets include Jupiter, Saturn, Uranus, and Neptune. They are primarily made up of hydrogen and helium, and they have enormous atmospheres.Jovian planets are formed farther away from the heat of the Sun, so they are formed from lighter-weight nebulae "dust." Terrestrial planets, on the other hand, are formed nearer to the Sun, so they are formed from heavier-weight nebulae "dust." The density of the materials that make up the Jovian planets is lower than that of the terrestrial planets due to this. This means that the Jovian planets have lower densities and a greater volume than the terrestrial planets.

Hence, the correct option is d. Gaseous Jovian planets, formed farther away from the heat of the Sun, are formed from light weight nebulae "dust."

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(P4.33) A dielectric cube of side a, centered at the origin, carries a "frozen- in" polarization" P = kr, where k is a constant.(a)The total bound charge is given by Q_b, and since it is proportional to a^3, the bound charges will add up to zero only if k = 0. Otherwise, there will be a non-zero net bound charge.(P4.35)The total bound charge on the surface is given by Q_b, which is equal to -2χ_e q.

Problem 4.33, we have a dielectric cube of side length a centered at the origin. The polarization is given as P = kr, where k is a constant.

To find the bound charges, we need to consider the divergence of the polarization. The bound charge density, ρ_b, is given by:

ρ_b = -∇ · P

In this case, since P = kr, we can calculate the divergence:

∇ · P = ∂(krx)/∂x + ∂(kry)/∂y + ∂(krz)/∂z

= k + k + k

= 3k

Therefore, the bound charge density is:

ρ_b = -3k

To check if the bound charges add up to zero, we need to integrate the bound charge density over the volume of the cube:

Q_b = ∫∫∫ ρ_b dV

Since the polarization is "frozen-in" and the cube is centered at the origin, we can integrate over the volume of the cube:

Q_b = ∫∫∫ (-3k) dV

= -3k ∫∫∫ dV

= -3k (Volume of the cube)

= -3k (a^3)

The total bound charge is given by Q_b, and since it is proportional to a^3, the bound charges will add up to zero only if k = 0. Otherwise, there will be a non-zero net bound charge.

Problem 4.35, we have a point charge q embedded at the center of a sphere with linear dielectric material of susceptibility χ_e and radius R.

To find the electric field, polarization, and bound charge densities, we can use Gauss's Law for dielectric materials. The electric field inside the dielectric sphere is given by:

E = q / (4πε_0 χ_e R^2) * r

where r is the radial distance from the center.

The polarization, P, is related to the electric field by:

P = χ_e ε_0 E

Substituting the expression for E, we get:

P = χ_e q / (4πR^2) * r

The bound charge density, ρ_b, is given by:

ρ_b = -∇ · P

Since P only has a radial component, the divergence simplifies to:

∇ · P = ∂(χ_e q / (4πR^2) * r)/∂r

= χ_e q / (2πR^2)

Therefore, the bound charge density is:

ρ_b = -χ_e q / (2πR^2)

To find the total bound charge on the surface of the sphere, we integrate the bound charge density over the surface area:

Q_b = ∫∫ ρ_b dA

Since the bound charge is on the surface, we can integrate over the surface area of the sphere:

Q_b = ∫∫ (-χ_e q / (2πR^2)) dA

= -χ_e q / (2πR^2) ∫∫ dA

= -χ_e q / (2πR^2) (Surface area of the sphere)

= -χ_e q / (2πR^2) (4πR^2)

= -2χ_e q

The total bound charge on the surface is given by Q_b, which is equal to -2χ_e q. The negative bound charge is located on the surface of the sphere, compensating for the positive charge at the center.

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Kepler's Law (3)

T² ≈ r³

The square of the orbital period ≈ the cube the distance to the sun

The farther away the planet is, the bigger the radius, the bigger the period

Answer:

A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. Animal cells simply have a cell membrane, but no cell wall.

hope this helps :)

Answer:

Compare animal cell and plant cell: Both are eukaryotic cells, both contain membrane bound organelles. Both contain similar membranes such as cytosol and cytosketal elements.

Explanation:

From the calculation, Sheila’s velocity immediately after she is thrown from the bike is 5.7 m/s.

Momentum is the product of mass and velocity. We know that the momentum before collision is equal to the momentum after collision.

Hence;

Momentum before collision = 340 kg • m/s.

Momentum after collision = 60v

Thus;

340 kg • m/s = 60v  kg • m/s

v = 340 kg • m/s/60 Kg

v = 5.7 m/s

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To measure the most accurate parallax possible from Earth's surface, we would make two measurements of a star's position on the sky separated by 6 months.

This is because the parallax method involves observing a star from two different positions along Earth's orbit around the Sun. By waiting 6 months between measurements, we are observing the star from opposite sides of the Earth's orbit, which provides the maximum possible baseline for the measurement. This allows us to measure even the smallest angles of parallax with greater accuracy.
If we were to wait longer than 6 months between measurements, the baseline for the measurement would become smaller, and the angle of parallax would be more difficult to measure accurately. Conversely, waiting less than 6 months would not provide enough time for the Earth's position in its orbit to change significantly, which would result in a smaller baseline as well.
Therefore, in order to obtain the most precise measurement of a star's parallax from Earth's surface, we would make two measurements of the star's position on the sky separated by 6 months.

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Answer:

Monkey Luffy

HW Due

A man jumping out of an airplane experiences two main forces acting on him: gravity and air resistance. Gravity acts vertically downward, pulling the man towards the ground. Air resistance acts horizontally, in the opposite direction of the man's motion, and its magnitude depends on the man's velocity.

As the man falls, his velocity increases, causing the magnitude of air resistance to increase. At some point, air resistance will equal the force of gravity, and the man will reach terminal velocity, the maximum velocity he can reach while falling. At terminal velocity, the net force on the man is zero, so his acceleration is zero and his velocity remains constant.

The diagram for a cyclist travelling at 15 miles per hour would show the force of propulsion acting forward on the cyclist and the force of friction acting in the opposite direction. Propulsion is the force that drives the cyclist forward, and friction is the force that resists the motion of the wheels on the road.

In 25 minutes, the cyclist would have travelled 15 miles per hour * (25 minutes/60 minutes/hour) = 6.25 miles. To convert this to meters, we can use the conversion factor 1 mile = 1609.34 meters, so 6.25 miles * 1609.34 meters/mile = 10,116.75 meters. The number of meters the cyclist would have travelled in 25 minutes is 10,116.75 meters.

Answer:

To form a cyclone, warm, moist air over the ocean rises upward from near the surface. As this air moves up and away from the ocean surface, it leaves is less air near the surface. So basically as the warm air rises, it causes an area of lower air pressure below.

The main parts of a tropical cyclone are the rainbands, the eye, and the eyewall. Air spirals in toward the center in a counter-clockwise pattern in the northern hemisphere (clockwise in the southern hemisphere), and out the top in the opposite direction.

Hope this helps, have a great day/night, and stay safe!