what is the thinnest film (but not zero) that produces a strong reflection for green light with a wavelength of 500 nm ? express your answer in nanometers.

Answer:

it is easier to kick a stone than to drag a stone.

Explanation:

the science behind the question is fairly simple.

when you kick and object for say a (rock) you have inertia which is made from you clocking your leg back and swinging it full force forward. when you kick with inertia, you will have a much further travel distance of the object rather than dragging it which is almost set at a certain rate of how fast you are moving (m) and how much inertia you are using by pulling (p)

so m+p=i for inertia. hope this  helped

B) The evidence that a chemical reaction has likely occurred is the formation of a precipitate.

A precipitate is a solid that forms from a chemical  response in a liquid  result. This is a clear  suggestion that a chemical  response has taken place because the reactants have  experienced a chemical change to form a new product that's  undoable in the original detergent.   Option A( a liquid  sluggishly losing volume) may be an  suggestion of evaporation or  immersion, but it doesn't  inescapably indicate a chemical  response.

Option C( boiling water releasing) is a physical change caused by a change in temperature, not a chemical  response. Option D( a change in the shape of a solid) could be a sign of a physical change,  similar as melting or breaking, but it isn't a clear  suggestion of a chemical  response.   thus, the  conformation of a precipitate( option B) is the most  dependable  substantiation that a chemical  response has likely  passed.

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Answer:

calculation presented a speed of 125,000 miles per second (200,000 km/s).

Explanation:

The length of the rubber band that the boy must use is 0.024 m or 24 mm.

To determine the length of the rubber band, we can use the formula for the potential energy stored in a stretched spring, which is also applicable to a stretched rubber band:

where U is the potential energy stored in the rubber band, k is the spring constant (or in this case, the rubber band constant), and x is the displacement of the rubber band from its natural length.

Since the rubber band is stretched by 0.25 of its natural length, the displacement x is 0.25 times the natural length of the rubber band.

We can solve for the rubber band constant k by using the formula for the velocity of a projectile launched by a spring (or in this case, a rubber band):

where v is the velocity of the projectile, m is the mass of the rubber band, M is the mass of the projectile, and k is the spring constant. We can rearrange this equation to solve for k:

k = (v² M) / (2 m)

We can now combine the two equations to solve for the length of the rubber band, L:

U = 1/2 k x²

U = 1/2 ((v² M) / (2 m)) (0.25 L)²

U = (v² M L²) / (32 m)

The potential energy stored in the rubber band must be equal to the kinetic energy of the projectile when it is launched:

U = 1/2 M v²

(v² M L²) / (32 m) = 1/2 M v²

L = ((16 m v²) / (k M))

L = ((16 m v²) / ((v² M) / (2 m) M))

L = √(32 m^2 / M)

L = (0.032 M)

Substituting the given values, we get:

L = √(0.032 * 0.006)

L = 0.024 m

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Answer:

v = 49.05 m/s^2

Explanation:

Let's use the uniform acceleration equation to find our final velocity.

\(v = u + at\)

v = final velocity

u = initial velocity

a = gravitational acceleration

t = time taken

Assuming the rock is at rest initially, u becomes zero.

\(v = 0 + 9.81(5)\)

\(v = 49.05 m/s^2\)

Answer:  Radio waves, Microwaves infrared, optical ultraviolet, X-rays and gamma-rays

Answer:

Some examples of external stressors include:

Major life changes. These changes can be positive, such as a new marriage, a planned pregnancy, a promotion or a new house. ...

Environment. The input from the world around us can be a source of stress. ...

Unpredictable events.

Workplace.

Social.

Explanation:

Answer:

because potentil energy is redy to go but its bound up

And kinetic energy is in motion

Explanation:

Answer:

This question is incomplete, the options are:

A) The object absorbs most white light and refracts most green light.

B) The object refracts most white light and absorbs most green light.

C) More green light is absorbed while more red and blue light is reflected.

D) More green light is reflected while more red and blue light is absorbed.

The answer is D.

Explanation:

Light is an electromagnetic wave that contains different colours at different wavelength. The colour of light that is seen depends on the wavelength of light that is REFLECTED, while other wavelengths of light are ABSORBED. This feature is dependent on the properties of each object that received the sunlight.

For example, an object will appear GREEN because it has properties that enables it to REFLECT most of the GREEN LIGHT but absorbs most of the RED AND BLUE LIGHT in the sunlight passing through the object.

Answer:

D

Explanation:

More green light is reflected while more red and blue light is absorbed.

Answer:

C. tiny particles called charges flowing through the wires.

Explanation:

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume.

Hope it helps!

Answer:

c

Explanation:

electric current is tiny particles called charges flowing through the wires
pls mark me brainliest :)

Answer:

The answer is either looking glass or stained glass.

Explanation:

The popular glass used in astrology is stained glass which is popular in symbolization of huge astrology figures. As for looking glass, it's more popular in astrological souvenirs or objects.

Answer:

i think answer is pisces horoscope

Answer:

v=s/t

s=vt

t=s/v

t=(120×10‐³)/172.8

(the distance meters has been changed to kilometres)

t=1/1440 hrs

Given ,

It would take 500 J of work to completely separate them. Option e is the answer.

Gravitational potential energy is the energy stored in the gravitational field between two objects. A negative value for gravitational potential energy indicates that work would need to be done to separate the objects to an infinite distance, meaning that the objects are attracted to each other. Therefore, in this scenario, it would take 500 J of work to completely separate the objects. Option e is correct choice.

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Answer:

Approximately \(2.2\; \rm cm^{3}\) (assuming that this gas is ideal, and that the initial volume of this gas is \(4.0\; \rm cm^{3}\).)

Explanation:

In this question, both the pressure on the gas and the temperature of the gas have changed. However, the ideal gas laws (Boyle's Law and Charles' Law) requires that only one of the two quantity change at a time. Therefore, consider this change in two steps:

Boyle's Law states that for a fixed quantity of some ideal gas, if temperature is held constant, the volume of the gas will be inversely proportional to the pressure on the gas.

Let \(V_0\) denote the initial volume of this gas. The question states that at \(P_0 = 2.0\times 10^{5}\; \rm Pa\) and \(T_0 = 288\; \rm K\), the volume of the gas is \(V_0 = 4.0\; \rm cm^{3}\).

By Boyle's Law, if temperature is held constant (\(T_1 = T_0 = 288\; \rm K\),) then at \(P_1 = 1.6 \times 10^{5}\; \rm Pa\):

\(\begin{aligned} V_1 &= V_0 \cdot \frac{P_0}{P_1} \\ &= 4.0\; \rm cm^3 \times \frac{2.0 \times 10^{5}\; \rm Pa}{1.6 \times 10^{5}\; \rm Pa} \approx 5.0\; \rm cm^{3} \end{aligned}\).

On the other hand, Charles' Law suggests that for a fixed quantity of some ideal gas, if the pressure of the gas is held constant, the volume of the gas will be proportional to the temperature (in degree Kelvins) of the gas.

Let \(V_1\) denote the volume of this gas before the temperature change. At \(P_0 = 2.0\times 10^{5}\; \rm Pa\) and \(T_0 = 288\; \rm K\), previous calculations show that \(V_0 = 5.0\; \rm cm^{3}\).

By Charles' Law, if the pressure of this gas is held constant (\(P_2 = P_1 =1.6 \times 10^{5}\; \rm Pa\),) then at the new temperature \(T_2 = 125\; \rm K\):

\(\begin{aligned} V_2 &= V_1 \cdot \frac{T_1}{T_0} \\ &= 5.0\; \rm cm^3 \times \frac{125\; \rm K}{288\; \rm K} \approx 2.2\; \rm cm^{3} \end{aligned}\).

Therefore, at \(T_2 = 125\; \rm K\) and \(P = 1.6 \times 10^{5}\; \rm Pa\), the volume of this gas would be approximately \(2.2\; \rm cm^{3}\).

The wavelength of the particle decreases in the region of the well. Therefore, the correct answer is e) It decreases in the region of the well.

The energy of a particle in a potential well determines the wavelength of the wave. The wavefunction of a particle in a potential well must be continuous across the boundaries of the well, but it may vary in shape. In the potential well, the wavefunction is dominated by the kinetic energy of the particle. In the well, the wavefunction is dominated by the potential energy of the particle.

a) It will increase or decrease depending on the mass of the particle.

c) It increases in the region of the well.

e) It decreases in the region of the well. There are various possible ways to approach the solution of this problem.

One way to approach this problem is to use the time-independent Schrödinger equation and boundary conditions. Another way to approach this problem is to use the wave-particle duality principle of quantum mechanics. Let's use the wave-particle duality principle of quantum mechanics to solve this problem.

According to the wave-particle duality principle of quantum mechanics, a particle of kinetic energy E and momentum p behaves like a wave of wavelength λ and frequency f, where λ=h/p and f=E/h, and h is Planck's constant.

Therefore, the wavelength of the particle in free space is λ1=h/sqrt(2*m*E1), where m is the mass of the particle, and E1 is the kinetic energy of the particle in free space.

The wavelength of the particle in the region of the well is λ2=h/sqrt(2*m*(E1-V)), where V is the depth of the well. Therefore, the ratio of the wavelengths is λ2/λ1=sqrt((E1-V)/E1).

Substituting the given values, we get λ2/λ1=sqrt((50-40)/50)=sqrt(2/5). Therefore, the wavelength of the particle decreases in the region of the well. Therefore, the correct answer is e) It decreases in the region of the well.

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The minimum surface interval required would be:

RNT + NDL = 11 minutes + 60 minutes = 71 minutes

The minimum surface interval required between dives is determined by calculating the residual nitrogen time (RNT) from the first dive and adding it to the no-decompression limit (NDL) for the second dive.

Assuming a conservative dive table with a no-decompression limit of 60 minutes at 18 meters/60 feet and 120 minutes at 14 meters/50 feet, the RNT for the first dive is 11 minutes.

So a minimum surface interval of 71 minutes would be required between the two dives to ensure that the diver remains within safe diving limits.

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Answer:

A)   F = - 8.5 10² N,  B)   I = 21 N s

Explanation:

A) We can solve this problem using the relationship of momentum and momentum

          I = Δp

in this case they indicate that the body rebounds, therefore the exit speed is the same in modulus, but with the opposite direction

         v₀ = 8.50 m / s

         v_f = -8.50 m / s

         F t = m v_f -m v₀

         F = \(m \frac{(v_f - v_o)}{t}\)

let's calculate

         F = \(1.00 \ \frac{(-8.5-8.5)}{2 \ 10^{-2}}\)

         F = - 8.5 10² N

B) let's start by calculating the speed with which the ball reaches the ground, let's use the kinematic relations

         v² = v₀² - 2g (y- y₀)

as the ball falls its initial velocity is zero (vo = 0) and the height upon reaching the ground is y = 0

         v = \(\sqrt{2g y_o}\)

calculate  

         v = \(\sqrt{2 \ 9.8 \ 10}\)

         v = 14 m / s

to calculate the momentum we use

         I = Δp

         I = m v_f - mv₀

when it hits the ground its speed drops to zero

we substitute

         I = 1.50 (0-14)

         I = -21 N s

the negative sign is for the momentum that the ground on the ball, the momentum of the ball on the ground is

        I = 21 N s

(a)The force that the foot applied on the ball will be 175 N.

(b)The impulse experienced by the rock during its fall will be 21 Ns.

The change in momentum of an item when it is operated upon by a force for a period of time is known as an impulse.Impulse is given by the change in momentum,

I=ΔP

The given data in the question will be

m is the mass of soccer ball = 1.00 kg

u is the velocity by which ball hits =5.00 m/sec

v is the velocity by which ball rebounds=8.50 m/sec.

(a) The force that the foot applied on the ball will be 175 N.

If the ball rebounds  with the the velocity of 8.50m/sec then

\(\rm F= \frac{m(v-u)}{t} \\\\\rm F= \frac{1(8.50-5.00)}{2.00\times10^{-2}}\\\\\rm F=175 N\)

Hence the force that the foot applied on the ball will be 175 N.

(b)The impulse experienced by the rock during its fall will be 21 Ns.

According to Newton's third equaton of motion.

\(\rm v^2=u^2+2gh\\\\\rm v^2=2\times9.81\times10.0\\\\\rm v=\sqrt{2\times9.81\times10.0} \\\\\rm v= 14.0071 m/sec\)

Due to the free fall condition the initial velocity is zero,

Impulse is given by the change in momentum,

I=ΔP

I=m(v-u)

\(\rm I=m(v-u)\\\\\rm I=1.50(14.0-0)\\\\\rm I=21 Ns\)

Hence the impulse experienced by the rock during its fall will be 21 Ns.

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Answer:

Density of water = 1 g / cm^3 = 1000 kg / m^3

(Density and  specific gravity have same numerical values)

Weight of water = 10 * M = 10000 Newtons / m^3

W = weight in air = weight in water + B     where B = buoyant force

B = 10 - 8 = 2 Newtons

B = 2 N = v * 10000 N / m^3 * .86      (where .86 is weight of liquid displaced as compared to water))    

v = (2 / 10000 m^3) / .86 = = .0002.33 m^3

Fission reactors are used to generate electricity, but fusion is not yet practical enough to be used.

The term nuclear reaction has to do with a type of reaction in which there is a change in the nucleus of an atom. This leads to the release of a tremendous amount of energy.

Hence, the way in which nuclear reactions can be used to meet the world’s energy needs is that fission reactors are used to generate electricity, but fusion is not yet practical enough to be used.

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The amount of the radioactive atom that will be left after 60 seconds is 8 g.

The given parameters;

The amount of the radioactive atoms that will be left after 60 seconds is calculated as follows;

0 --------------------------------- 128 g

15 s ------------------------------ 64 g

30 s ----------------------------- 32 g

45 s ----------------------------- 16 g

60 s ------------------------------ 8 g

Thus, the amount of the radioactive atom that will be left after 60 seconds is 8 g.

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Answer:

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The waffle iron has a rate of 1 kW and 120 v sources carrying a current of  8.33 Amperes and the resistance of the waffle iron is 14.41 ohms.

Electric current is a term used to describe how much electricity flows across a circuit and how it flows in an electronic circuit. Amperes are used to measure it (A). The more electricity flowing across the circuit, the higher the ampere value.

Given : Rating of waffle iron(P) = 1 kW, Potential of source (V) = 120 Volt,

(A) We know that Current(I) is equal to power divided by potential, which means

I = P / V, I = 1000 / 120 Volt

I = 8.33 Volt

(B) For resistance(R), we know that  R = V / I (BY Ohms Law),

R =  120 / 8.33 ohm

R = 14.41 ohm

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The amount of current flowing through the wire is 2.34 A, with a flow rate of 5.69 x 10²⁰ electrons per second at any given place.

Current, which is measured in amperes (A), is the rate at which charge moves through a conductor. In this instance, the number of electrons that pass a location in the wire (5.69x10²⁰) and the duration of their passage (2.43 s) are also provided.

The total charge that went through the wire (the number of electrons multiplied by the charge of one electron) must be divided by the time period in order to determine the current. The current in the wire is 2.34 A based on the values provided and the elementary charge of an electron (1.6x10⁻¹⁹ C).

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Answer:

The triple beam balance is an instrument used to measure mass very precisely. Such devices typically have a reading error of ±0.05 grams. ... The triple beam balance can be used to measure mass directly from the objects, find mass by difference for liquid, and measure out substances.

Answer:

reflected by clouds so a is correct

Answer:

This answers idReflected by clouds

The partial pressure of water in mm Hg is 22.64 mm Hg.

To find the partial pressure of water, we need to use the concept of vapor pressure, which represents the pressure exerted by water vapor in the air. The vapor pressure of water depends on the temperature and relative humidity. In this case, the given relative humidity is 75.0%, which indicates that the air is holding 75.0% of the maximum amount of water vapor it can hold at that temperature.

Step 1: Calculate the vapor pressure of water in inches of mercury (in. Hg):

Vapor Pressure = Relative Humidity * Vapor Pressure at Saturation

The vapor pressure at saturation depends on the temperature. At 80 °F, the vapor pressure of water is approximately 0.963 in. Hg. Therefore, we can calculate the vapor pressure as follows:

Vapor Pressure = 0.75 * 0.963 in. Hg

             ≈ 0.722 in. Hg

Step 2: Convert the vapor pressure from inches of mercury to millimeters of mercury:

To convert from inches of mercury (in. Hg) to millimeters of mercury (mm Hg), we can use the conversion factor: 1 in. Hg = 25.4 mm Hg.

Vapor Pressure = 0.722 in. Hg * 25.4 mm Hg/in. Hg

             ≈ 18.34 mm Hg

Step 3: Round the answer to two decimal places:

The final answer, rounded to two decimal places, is 18.34 mm Hg, which represents the partial pressure of water in the given conditions.

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Answer:

no3. is is the first bubble answer, no4. is the middle answer

Explanation:

Any object free to rotate about a pivot will come to rest with its center of mass directly below the pivot, provided there are no external torques acting on it. This is known as the principle of rotational equilibrium. The center of mass is the point at which the object can be balanced on a single point, and if it is directly below the pivot, the object will not rotate further. This principle is commonly used in the design and analysis of objects that pivot, such as seesaws, balance scales, and doors.

Rotational equilibrium means that the object's net torque is zero. This occurs when the sum of the torques acting on the object is balanced and there is no rotational acceleration. In other words, the object is in a balanced state where there is no tendency for it to rotate further.

For an object to come to rest in rotational equilibrium, the torques acting on the object must balance each other out. This can occur when the object's weight or gravitational force acts at the center of mass, or when external forces or torques are applied in a way that cancels out the existing torques.

In summary, when an object free to rotate about a pivot comes to rest, it will come to rest in a state of rotational equilibrium where the net torque acting on the object is zero.

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A dominant strategy is the player's best response to all possible strategies of the other player.

In game theory, a dominant strategy refers to a strategy that provides the highest payoff for a player, regardless of the strategies chosen by other players. It is a strategy that a rational player would always choose, regardless of the actions taken by their opponents. By selecting a dominant strategy, a player maximizes their own individual payoff or outcome in the game, without considering the strategies chosen by other players.

It is important to note that the existence of a dominant strategy does not depend on the number of players in the game or the presence of a Nash equilibrium. A dominant strategy can exist in games with any number of players, and it does not necessarily guarantee a joint profit-maximizing outcome or imply the absence of a Nash equilibrium.

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