sunlight contains all visible wavelengths of light. each wavelength is a different color. when sunlight passes into and out of a raindrop, the light rays bend. which color of light bends the most?

Answer:

because sound needs medium to transmit.

The sound is produced by vibration and if there is no medium there is no vibration and no vibration means no sound.

Calculate the mass, volume, and density of the nuclide ⁶⁹Ni. _1.14387 x \(10^{-25}\) kg _ m3 _ (1.14387 x \(10^{-25}\)_ kg/m3

To calculate the mass, volume, and density of the nuclide ⁶⁹Ni, we need to utilize the atomic mass and the density formula.

Mass: The atomic mass of ⁶⁹Ni is given as 69 atomic mass units (amu). To convert this to kilograms (kg), we need to use the conversion factor of 1 amu = \(1.66054 * 10^ {-27}\) kg. Thus, the mass of ⁶⁹Ni is calculated as follows:

Mass = 69 amu * (1.66054 x \(10^{-27}\) kg/1 amu) = 1.14387 x \(10^{-25}\) kg

Volume: To determine the volume, we need to know the density of ⁶⁹Ni. Let’s assume the density is ρ kg/m³. The volume (V) can be calculated using the formula:

Density = Mass / Volume

Solving for volume, we have:

Volume = Mass / Density

Substituting the known values, we get:

V = (1.14387 x\(10^{-25}\) kg) / ρ

3. Density: To find the density, we rearrange the density formula:

Density = Mass / Volume

Substituting the known values, we get:

Density = (1.14387 x \(10^{-25}\) kg) / V

In summary, the mass of ⁶⁹Ni is approximately 1.14387 x\(10^{-25}\) kg, the volume is given by V = (1.14387 x \(10^{-25}\) kg) / ρ, and the density is obtained from Density = (1.14387 x \(10^{-25}\) kg) / V. The density value will depend on the specific value assigned to ρ.

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Answer:

The answer is False.

Explanation: The FDA (food and drug administration) is a regulatory agency of the United state Government, they regulate the production and distribution of food and drugs within the United States of America, ensuring that standards are met and followed.

Most of the approvals given to food and drugs by FDA are done based on random sampling of products which may not be able to capture all the defective products in a given lot or batch of supplies, which is why it very necessary to take other measures to verify the wholesomeness, authenticity etc of a given product before purchasing or making use of such products.

Answer:

false

Explanation:

got right on egd

Answer:

 V = 2.52 10³ V

Explanation:

The electric potential for a point charge is

       V = k ∑ \(\frac{q_i}{r_i}\)

In this case the formula is

       V = k (\(\frac{q_1}{r_1} + \frac{q_2}{r_2}\))

distances are the absolute value

       r₁ =√ (7.1 -0)² = 7.1 m

       r₁ =√ (7.1 - 14.3)² = 7.2 m

we substitute

       V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)

we have two possibilities

* different charges

         V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)

* equal charges and same sign

          q₁ = q₂ = q

         V = 9 10⁹ q (1 / 7.1 + 1 / 7.2) = p 9 10⁹   0.2797

         V = 2.52 10⁹ q

if we assume a value of the charge, for example q = 1 10⁻⁶ c

           V = 2.52 10⁹ 1 10⁻⁶

            V = 2.52 10³ V

Answer:

there's a center of the earth..and there is every later of it..just like in a movie...it is true

Answer:

The layers of rock at Earth ’s surface contain evidence of the evolutionary processes undergone by these components of the terrestrial environment during the times at which each layer was formed. By studying this rock record from the very beginning, it is thus possible to trace their development and the resultant changes through time.

Answer:

it may be because of the movement of the atoms. i believe that the heat of the warm water makes it move faster, thus making the object float due to upthrust, or air pressure

Answer:

\(a=12.5\ m/s^2\)

Explanation:

Given that,

The speed of the bucket tied to a rope, v = 5 m/s

The radius of the circle, r =2 m

We need to find the magnitude of the centripetal acceleration of the bucket. The formula for the centripetal acceleration is given by :

\(a=\dfrac{v^2}{r}\\\\a=\dfrac{(5)^2}{2}\\\\a=12.5\ m/s^2\)

So, the centripetal acceleration of the bucket is \(12.5\ m/s^2\).

Answer:

12kg is greater because 12kg is 12000g

Answer:

12kg is the answer cause if it wasn't 12 kg then 1,400 g would not be the answer so you would pick 12kg as the answer.

When describing electric force, force fields are required since electric force is a kind of gravity. Option A is Correct.

A force field is a means to visualise the interactions between electric charges in physics. It is more accurate to remark that a positive (+) charge generates a force "field" in the area surrounding it rather than referring to the force it exerts on an electron.

The physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them, is known as an electric field (or E-field). It can also refer to a system of charged particles' physical field. Option A is Correct.

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If spectral lines from galaxy b are redshifted from their rest wavelengths twice as much as the spectral lines from galaxy a, it means that galaxy b is approximately twice as far away from us as galaxy a.

According to Hubble's law, the redshift of spectral lines is directly proportional to the distance of the galaxy. Therefore, if spectral lines from galaxy b are redshifted from their rest wavelengths twice as much as the spectral lines from galaxy a, it means that galaxy b is approximately twice as far away from us as galaxy a.

Based on the information given, the spectral lines from Galaxy B are redshifted twice as much as those from Galaxy A. According to Hubble's Law, the redshift of a galaxy is proportional to its distance from the observer. Therefore, we can conclude that Galaxy B is approximately twice as far away from us as Galaxy A.

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Answer:

the halfway point

Explanation:

As an object falls under the influence of gravity, kinetic energy and potential energy are equal at the halfway point only.

Answer:

i think it would be a but i am not 100% sure on that

The brakes do

W = ∆K = 0 - 1/2 (1800 kg) (40 m/s)² = -1.44 MJ (megaJoules)

of work on the car to stop it. They apply a negative force since the braking opposes the car's forward displacement, so the car stops over a distance x such that

W = (-24.6 kN) x   ==>   x ≈ 58.5 m

The circumference in inches of the 25.0 pound solid steel cannon ball is 17.46 in

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

The volume of the ball can be obtained as follow:

Density = mass / volume

Volume = mass / density

Volume = 11.3398 / 7.7×10³

Volume = 0.00147 m³

Multiply by 61023.7 to express in in³

Volume = 0.00147 × 61023.7

Volume = 89.70 in³

We shall use the formula for calculating the the volume of a sphere to determine the radius of the ball. Details below:

V = 4/3πr³

89.70 = 4/3 × 3.14 × r³

89.70 = 4.187 × r³

Divide both sides by 4.187

r³ = 89.70 / 4.187

Take the cube root if both sides

r = ³√(89.70 / 4.187)

Radius = 2.78 in

C = 2πr

C = 2 × 3.14 × 2.78

Circumference of ball = 17.46 in

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A silicate structure is considered an isolate if no silica tetrahedra share any oxygen ions.

The answer to your question is "isolate." In an isolate silicate structure, each silica tetrahedron is not connected or bonded to any other tetrahedra through shared oxygen ions. This results in a structure where the tetrahedra are isolated from one another.

Each tetrahedron is independent of the others and not joined to those next to it, creating a standalone construction. In silicate minerals with isolated structures, this arrangement results in special qualities and traits.

Each silica tetrahedron in a framework structure is connected to other tetrahedra by shared oxygen ions, creating a three-dimensional network. Minerals like quartz and feldspar typically include this kind of structure. In a framework structure, the silica tetrahedra are arranged in a robust and rigid way since there are no shared oxygen ions present. The mineral's stability and physical characteristics, including hardness and resistance to chemical weathering, are influenced by the framework structure.

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Answer:

It has several other objects in its orbit, though few are as massive as itself."

Answer: it’s closed

Explanation: a pex

From the given information, one thing that is not assumed before starting an Anova test is that the means of the groups are all equal.

Before starting an Anova test, it is assumed that the data meet the following assumptions:

Independence: The observations in each group must be independent of each other.

Normality: The data within each group must be normally distributed.

Homogeneity of variances: The variance of the data within each group must be equal or roughly equal.

In fact, the purpose of the Anova test is to determine if the means of the groups are significantly different from each other.

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Answer:

d.)The population means are the same.

Explanation:

What is NOT assumed before starting an ANOVA test?

a.)

Populations are normally distributed.

b.)

The population standard deviations are similar.

c.)

The observations are independent and from a random sample.

d.)

The population means are the same.

A 0.200kg ball is shot out of a toy gun from a height of 3.00m. The gun works by compressing a spring k=175N/m a distance of 0.400m. then the force applied to the ball is 70 N.

Simple harmonic motion is a specific kind of periodic motion of a body that arises from a dynamic equilibrium between an inertial force that is proportional to the body's acceleration away from the static equilibrium position and a restoring force on the moving object that is directly proportional to the magnitude of the object's displacement and acts towards the object's equilibrium position. Oscillating spring perform SHM.

Force applied on the spring is spring constant times distance.

F = kx

Given,

mass m = 0.2 kg

height h = 3 m

k = 175 N/m

x = 0.4 m

The force applied to the ball is,

F = kx

F = 175×0.4

F = 70 N

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Answer:

99.48

Explanation:

99.48

No atomic  model is a picture of an atom but only helps explain the behavior of one

We know that the atom is the smallest particle of a substance that is able to take part in a chemical reaction. We know that in the atom there are certain smaller particles that we can be able to refer to as the subatomic particles.

In this case, we are talking about the different models that we can be able to use to show the atom. None of these models can be said to show the atom exactly but can approximate how the atom behaves.

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We have that the  gravitational potential energy  effect on the system is mathematically given as

Option C

From the question we are told

Due to reduce in top of Y, doable strength will limit and due to amplify in peak of X, achievable power will increase.

Now, PE = mgh.

Generally the equation for the Velocity of centre of mass  is mathematically given as

\(V =\frac{ m1v1 + m2v2}{ m1 + m2}\\\\Therefore \\\\V =\frac{ (m1 - m2) v}{ m1 + m2}\)

Hence, V is positive as m1 > m2

Therefore

The conclusion

The gravitational potential energy decreases because the center of mass of Object X and Object Y moves downward.

Option C

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Objects X and Y are connected by a string of negligible mass and suspended vertically over a pulley of negligible mass, creating an Atwood’s machine, as shown in the figure.

The objects are initially at rest, and the mass of Object Y is greater than the mass of Object X. As Object Y falls, how does the gravitational potential energy of the Object Y-Object Y-Earth system change? All frictional forces are considered to be negligible.

a

The gravitational potential energy increases because the center of mass of Object X and Object Y moves upward.

b

The gravitational potential energy increases because the center of mass of Object X and Object Y moves downward.

c

The gravitational potential energy decreases because the center of mass of Object X and Object Y moves downward.

d

The gravitational potential energy decreases because the center of mass of Object X and Object Y moves upward.

Answer: C) Colorism

Explanation: The black children at Aviyah’s school are demonstrating prejudice or discrimination against Aviyah because she doesn’t have a “dark skin tone.”

Aviyah is not accepted by children at her school due to her color, so this demonstrates colorism, therefore the option c is correct

Associating a trait with a group is a cognitive process that stereotypes use, but they can also entail, trigger, or justify an emotive response toward members of other groups. Some individuals, including some researchers, contend that stereotypes can capture reality and can be based on the predominance of traits in particular groups. Males have been stereotyped since they were young, with traits including self-reliance, involvement in risky activities, domination, independence, being physically active, and hostility among others.

According to the government, if a person is not accepted due to his skin color, then it's a case of colorism.

Here Aviyah is Bi racial her mother belongs to white skin people and her father to a black skin community and due to this reason the children in her school are not accepting her, therefore, this is a case of colorism, and she can report to gov body.

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False. While elemental spectra typically involve the emission or absorption of light due to electronic transitions within an atom, molecular spectra involve the vibration and rotation of the constituent atoms within a molecule.

Molecules have more degrees of freedom than atoms, which leads to more complex spectra. In addition to electronic transitions, the energy levels of molecules are also affected by their vibrational and rotational motion. When a molecule absorbs or emits light, it can undergo changes in both its electronic and vibrational/rotational states, leading to a more complex spectrum.

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Answer:

The time is 0.65 sec.

The distance from the hill is 2.07 m.

Explanation:

Given that,

Speed = 15 m/s

Distance = 9.8 m

Along horizontal,

We need to calculate the time

Using formula of time

\(t=\dfrac{d}{v}\)

Where, d =distance

v = velocity

Put the value into the formula

\(t=\dfrac{9.8}{15}\)

\(t=0.65\ sec\)

Along vertical,

We need to calculate the height

Using equation of motion

\(s=ut+\dfrac{1}{2}gt^2\)

Put the value in the equation

\(s=0+\dfrac{1}{2}\times9.8\times(0.65)^2\)

\(s=2.07\ m\)

Hence, The time is 0.65 sec.

The distance from the hill is 2.07 m.

Acceleration is -7 m/s²

Explanation:

initial velocity (u) = 14 m/s

since it's gonna stop,

final velocity (v) = 0m/s

time taken(t) = 2 seconds

now,

a = (v-u)/t

or, a = (0-14)/2

or, a = -14/2

a = -7m/s²

When the  distance between the charges is doubled, the electrostatic force between the charges will reduce by quarter.

The electrostatic force between two point charges is calculated using Coulomb's law;

\(F = \frac{kq^2}{r^2}\)

where;

When the distance between the charges is doubled

\(F = \frac{kq^2}{(2r)^2} \\\\F = \frac{kq^2}{4r^2}\\\\F = \frac{1}{4} (\frac{kq^2}{r^2} )\)

Thus, when the  distance between the charges is doubled, the electrostatic force between the charges will reduce by quarter.

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It is the actual part of the wave's angular wavenumber and shows the change in phase per unit length along the wave's passage at any given time. Its units of measurement, radians per unit length, are represented by the symbol.

The term "phase constant" refers to the value. The motion's starting circumstances have an impact on it.  = 0 if, at time t = 0, the item has moved the most in the positive x-direction.

The phase constant, which is equal to the real component of the angular wavenumber of the wave, represents the change in phase per unit length along the route that the wave is mostly travelling at any given time.

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It is the actual part of the wave's angular wavenumber and shows the change in phase per unit length along the wave's passage at any given time. Its units of measurement, radians per unit length, are represented by the symbol.

The term "phase constant" refers to the value. The motion's starting circumstances have an impact on it.  = 0 if, at time t = 0, the item has moved the most in the positive x-direction.

The phase constant, which is equal to the real component of the angular wavenumber of the wave, represents the change in phase per unit length along the route that the wave is mostly travelling at any given time.

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