What caused the light to shine on the paper above the mirror?
O The light was refracted.
The light was reflected.
The light was amplified.
The light was diffracted.

The deceleration experienced by the 1075 N sky diver as he opened his parachute is 13.39 m/s²

Force = mass × acceleration

We know that deceleration is the acceleration of stopping objects. Thus,

Force (F) = mass (m) × deceleration (a)

Thus, we can obtain the deceleration of the sky diver as follow:

Force = mass (m) × deceleration (a)

1469 = 109.69 × a

Divide both sides by 109.69

a = 1469 / 109.69

a = 13.39 m/s²

Thus, the deceleration is 13.39 m/s²

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Answer:

True

Explanation:

12). When you move your hand or foot, your body has converted potential energy into kinetic energy.

13). When coasting while roller skating, you eventually stop due to

friction causes kinetic energy to transfer to thermal energy.

14).  A ball has 100 J of potential energy when it is on a shelf. The kinetic energy of the ball the instant it hits the floor is Kinetic increases, potential decreases.

Kinetic energy is the force that propels motion, which can be seen in the movement of a particle, an object, or a group of particles. A person walking, a baseball being thrown, a piece of food falling from a table, and a charged particle in an electric field are all examples of objects in motion that use kinetic energy.

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Answer:

3 m/s

Explanation:

have a good day

Answer:

b is the correct answer

Explanation:

The range of wavelengths of light as it approaches the retina within the vitreous humor is approximately 400 to 700 nanometers (nm).

Visible light is a form of electromagnetic radiation that is perceived by the human eye. It consists of a spectrum of different wavelengths, and each wavelength corresponds to a specific color. The visible light spectrum ranges from approximately 400 nm (violet/blue) to 700 nm (red).

As light passes through the various structures of the eye, including the cornea, aqueous humor, lens, and vitreous humor, it undergoes refraction and focuses onto the retina. The vitreous humor is a clear, gel-like substance that fills the space between the lens and the retina.

The vitreous humor does not significantly affect the wavelength of light passing through it, so the range of wavelengths remains within the visible light spectrum. Therefore, the light that reaches the retina within the vitreous humor typically falls within the range of 400 to 700 nm. This range covers the colors of the visible spectrum that are perceived by the human eye.

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Dilation of a figure with reflectional or rotational symmetry the  resulting image will have symmetry.

Dilation is the process of altering an object's or shape's size by reducing or enlarging its dimensions by a certain amount of scale. A circle with a radius of 10 units, for instance, is reduced to a circle with a radius of 5 units. This technique is applied in art and craft, photography, and logo design, among other fields. There are four fundamental types of transformations in geometry.

Resizing an item uses a transition called dilation. Dilation is used to enlarge or contract the items. The result of this transformation is a picture with the same shape as the original. However, there is a variation in the shape's size. The initial form should be stretched or contracted during a dilatation. The phrase "scale factor" describes this transition.

The scale factor is defined as the proportion of the new picture's size to that of the previous image. A fixed location in the plane serves as the centre of dilation. The scale factor and the centre of dilation are used to determine the dilation transformation.

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Answer:

Explanation:

Let the angle required be θ with direction opposite to current .

cos θ = 3 / 5

θ = 53° .

Resultant velocity towards the opposite side

= √ ( 5 ² - 3²)

= 4 km /h

distance covered = 1.2 km

time taken = 1.2 / 4 = .3 h

= 18 min .

Answer:

The measurement of an object's motion with respect to any other object that is moving or stationary is called Relative Motion.

The speed of the ball at the bottom of the swing is approximately 0.767 meters per second.

In this case, the speed of the ball at the bottom of the swing is related to maximum translational kinetic energy (\(K\)), in joules, which is equivalent to maximum gravitational potential energy (\(U_{g}\)), in joules, by the principle of energy conservation:

\(U_{g} = K\) (1)

By definitions of translational kinetic energy and gravitational potential energy:

\(m\cdot g \cdot h = \frac{1}{2}\cdot m\cdot v^{2}\)

\(v = \sqrt{2\cdot g\cdot h}\) (2)

If we know that \(g = 9.807\,\frac{m}{s^{2}}\) and \(h = 0.03\,m\), then the speed of the ball at the bottom of the swing is:

\(v = \sqrt{2\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (0.03\,m)}\)

\(v\approx 0.767\,\frac{m}{s}\)

The speed of the ball at the bottom of the swing is approximately 0.767 meters per second.

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the force between the two wires if they are separated by 2.50 cm is 0.525 N.

Given that force F between two parallel wires carrying electric currents is inversely proportional to the distance d between the wires and that a force of 0.750 N exists between wires that are 1.75 cm apart and that we are supposed to find the force between them if they are separated by 2.50 cm.

Let the initial force be F₁ and the initial distance be d₁.

Therefore, we can write the relationship between force and distance as;

F₁d₁ = F₂d₂

Where

;F₁ = 0.750 N (initial force)

d₁ = 1.75 cm (initial distance)

F₂ = ? (force at new distance)

d₂ = 2.50 cm (new distance)

Let us find F₂;F₁d₁ = F₂d₂F₂ = F₁d₁/d₂

Now substitute the values we know;

F₂ = (0.750 N x 1.75 cm) / 2.50 cmF₂ = 0.525 N

Therefore, the force between the two wires if they are separated by 2.50 cm is 0.525 N.

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Answer:

b

Explanation:

because the metalloids are the thing in the middle

Answer:

1 : 2 (30 : 60)

Explanation:

The rate of increase of the Earth's gravity field at latitudes 30° and 60° are in the ratio 1 : 2 because 30 : 60 simplified is 1 : 2.

If the answer does not ask for the ratio to be simplified leave its as 30 : 60.

Knowing the velocity of a cloud in the disk of the Milky Way helps astronomers figure out how far away it is because of a principle called the Doppler effect.

The Doppler effect is the change in the frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. When an object, such as a cloud of gas, is moving away from an observer, the wavelength of light it emits appears longer, or red-shifted. Conversely, when an object is moving towards an observer, the wavelength of light it emits appears shorter, or blue-shifted.

By measuring the Doppler shift of the light emitted by a cloud in the disk of the Milky Way, astronomers can determine whether it is moving towards or away from us. If they know the cloud's velocity and can measure the Doppler shift, they can calculate how far away the cloud is using the Doppler equation. This allows astronomers to map out the structure of the Milky Way and better understand the movements of objects within it.

In conclusion, knowing the velocity of a cloud in the disk of the Milky Way helps astronomers figure out how far away it is through the use of the Doppler effect, which allows them to measure the shift in light wavelength and calculate distance.

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Fluorescence is a light emission from a substance that absorbs light or any other electromagnetic radiation, and re-emits the absorbed radiation at a longer wavelength. A substance will only fluoresce if it has absorbed light of sufficient energy.

When light hits a molecule or atom, it elevates its energy level from its ground state to a higher energy level. If the absorbed energy is then emitted as visible light, it is referred to as fluorescence. In the case of the wavelength producing fluorescence while the other does not, it can be said that the wavelength that produces fluorescence is due to the molecule absorbing that particular wavelength. Molecules absorb light of a specific energy level and can re-emit it as fluorescence. Hence, if a molecule does not absorb the energy from a particular wavelength, it will not be able to fluoresce. In order to understand why one wavelength can produce fluorescence while the other cannot, we first need to understand what fluorescence is. Fluorescence is a light emission from a substance that absorbs light or any other electromagnetic radiation and re-emits it at a longer wavelength. This light emission occurs when the molecule or atom absorbs the incoming light and then re-emits it at a different energy level. The energy that is absorbed by the molecule or atom determines whether it can fluoresce or not. The reason for one wavelength producing fluorescence while the other does not is that the molecule that is emitting the fluorescence is absorbing the energy of the specific wavelength. The molecule absorbs the energy from the incoming light and then re-emits the light at a different energy level. If the absorbed energy is then emitted as visible light, it is referred to as fluorescence. Hence, if a molecule does not absorb the energy from a particular wavelength, it will not be able to fluoresce. Therefore, it can be said that the molecule's ability to fluoresce depends on its ability to absorb energy from the specific wavelength.

In conclusion, it can be said that the reason for one wavelength producing fluorescence while the other does not is because the molecule that is emitting the fluorescence is absorbing the energy of the specific wavelength. The molecule's ability to absorb energy from a specific wavelength will determine whether it can fluoresce or not. Fluorescence is a useful tool in many fields, including biology, chemistry, and physics, and understanding the basics of fluorescence can help us to better understand how it can be used in various fields.

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Answer:

7.35 J

Im assuming, upon answering the question, that the gravity in this scenario is 9.8? As 9.8 is the gravitational force upon the earth.

Answer:

With a pressure, for instance, of 4 atmospheres, and a volume of 5 liters yields 4 x 5 = 20. Divide the result by the number of moles of gas. If, for instance, the gas contains 2 moles of molecules: 20 / 2 = 10. Divide the result by the gas constant, which is 0.08206 L atm/mol K: 10 / 0.08206 = 121.86.

To calculate the average speed, we need to convert the distances and times into a consistent unit. Let's convert the distance in kilometers to miles for the second part of the run.

1 kilometer is approximately equal to 0.62137 miles. Therefore, 3 km is approximately 1.86411 miles.

Now, let's calculate the total distance and total time for the entire run:

Total distance = 2 miles + 1.86411 miles = 3.86411 miles

Total time = 13 minutes + 20 minutes = 33 minutes

Average speed is calculated by dividing the total distance by the total time:

Average speed = Total distance / Total time = 3.86411 miles / 33 minutes

To convert the average speed to a more common unit, let's convert minutes to hours:

33 minutes is equal to 33/60 = 0.55 hours

Average speed = 3.86411 miles / 0.55 hours ≈ 7.02657 miles per hour

Therefore, the runner's average speed for the entire run is approximately 7.03 miles per hour.

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Answer:

KE = KE (incidental) - KE of emitted photons

or KE = h * f - Wf

So   h * f = KE + Wf = 1.2 + 1.88 = 3.08    incident energy

If you double the frequency then h * f = 6.16

KE = 6.16 - 1.2 = 4.96 eV

Answer:

a counterclaim

Explanation:

authors purpose is what an author wrote somthing for

opinion is someones thoughts or "side" on a argument

an arguement is a battle of opinions if that makes sense

Answer:

2.16×10⁻⁶ N

Explanation:

Applying,

F = kqq'/r² (coulomb's Law)....................... Equation 1

Where F = electrostatic force, k = coulomb's constant, q = charge on the styrofoam, q' = charge on the grain of salt, r = distance between the charges.

From the question,

Given: q = 0.002 mC = 2.0×10⁻⁶ C, q' = 0.03 nC = 3.0×10⁻¹¹ C, r = 0.5 m

Constant: k = 8.99×10⁹ Nm²/C²

Substitute these values into equation 1

F = (2.0×10⁻⁶)(3.0×10⁻¹¹)(8.99×10⁹)/0.5²

F = 2.16×10⁻⁶ N

To find the position and height of the final image formed by the system of lenses, we can use the lens formula and magnification formula.

Given:

Object height (h_1) = 1.00 cm

Object distance from the converging lens (u_1) = -4.00 cm (since it is to the left of the lens, we take negative sign)

Focal length of the converging lens (f_1) = 8.00 cm

Focal length of the diverging lens (f_2) = -216.00 cm (negative sign indicates it is a diverging lens)

Distance between the two lenses (d) = 6.00 cm

Using the lens formula for the converging lens:

1/f_1 = 1/v_1 - 1/u_1

Substituting the values:

1/8 = 1/v_1 + 1/4

Solving the equation gives:

v_1 = 2.67 cm

Now, using the lens formula for the diverging lens:

1/f_2 = 1/v_2 - 1/u_2

Substituting the values:

1/-216 = 1/v_2 - 1/(2.67 - 6)

Solving the equation gives:

v_2 = -8.40 cm

The negative sign for v_2 indicates that the image formed by the diverging lens is virtual.

The position of the final image can be calculated as the sum of the distances:

v_final = v_1 + d + v_2

v_final = 2.67 + 6 - 8.40

v_final = 0.27 cm

The height of the final image can be calculated using the magnification formula:

magnification = h_final / h_1

magnification = -v_2 / u_2

Substituting the values:

magnification = -(-8.40) / (2.67 - 6)

magnification = 1.63

Since the magnification is positive, the image is upright.

The final image is formed at a position of 0.27 cm to the right of the system of lenses. The height of the final image is 1.63 times the height of the object. The image is upright and virtual since the final image is formed by the diverging lens.

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The light will be refracted at an angle of approximately 27.18 degrees relative to the normal inside the glass-bottomed boat.

When a diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30 degrees relative to the normal, the light will undergo refraction as it passes from water to glass.

Refraction occurs when light travels from one medium to another with a different refractive index, causing the light rays to change direction. The amount of refraction is determined by Snell's Law, which states:

n₁sin(θ₁) = n₂sin(θ₂)

Where:

n₁ = refractive index of the initial medium (water)

n₂ = refractive index of the second medium (glass)

θ₁ = angle of incidence relative to the normal

θ₂ = angle of refraction relative to the normal

In this scenario, the light travels from water (with a refractive index of approximately 1.33) to glass (with a refractive index typically around 1.5). Assuming an angle of incidence of 30 degrees relative to the normal, we can calculate the angle of refraction using Snell's Law.

n₁sin(θ₁) = n₂sin(θ₂)

(1.33)sin(30°) = (1.5)sin(θ₂)

0.665 ≈ 1.5sin(θ₂)

sin(θ₂) ≈ 0.665 / 1.5

sin(θ₂) ≈ 0.443

θ₂ ≈ arcsin(0.443)

θ₂ ≈ 27.18°

Therefore, the light will be refracted at an angle of approximately 27.18 degrees relative to the normal inside the glass-bottomed boat.

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Therefore, the solution to the given system of equations is x = 0 and y = 0.

In this case, the system has a unique solution, which is the point (0, 0).

To solve the given system of equations using the substitution method, we'll solve one equation for one variable and substitute it into the other equation.

Let's start with the second equation: x - 3y = 0.

Solving this equation for x, we get:

x = 3y.

Now, substitute this expression for x in the first equation:

3x + 5y = 0

3(3y) + 5y = 0

9y + 5y = 0

14y = 0

y = 0.

Now that we have found the value of y, we can substitute it back into the equation x = 3y:

x = 3(0)

x = 0.

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As of my knowledge cutoff in September 2021, no space probes have flown past Uranus closely enough to take detailed pictures.

The only spacecraft that has ever visited Uranus is Voyager 2, which conducted a flyby of the planet in 1986. During the flyby, Voyager 2 captured images and collected data, providing valuable information about the planet and its moons. However, the images obtained were not at a level of detail considered "detailed pictures" by today's standards. It's important to note that my information is accurate up until September 2021, and there may have been new missions or developments since then. For the most up-to-date information, it is recommended to refer to reliable sources or official space agency announcements.

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Answer:

no answer

Explanation:

Two distant galaxies are receding from earth at 0.75c, in opposite directions with 0.98c fast an observer in one galaxy measure the other to be moving.

u=u'+v/1+uv'/c²

u=0.85c+0.75c/1+0.75*0.85=0.98 c

A galaxy is an enormous collection of gas, dust, billions of stars, and their solar systems all held together by gravity. A planet in our solar system by the name of Earth is where we call home. The Milky Way Galaxy's size is relatively small. A galaxy is a massive cluster of stars and planets that spans many billions of light years. A far-off galaxy has been found by astronomers. the solar system, the nebula, and the star system More Galactic equivalents. Nearly all of the hydrogen and helium in the universe after the Big Bang. Some astronomers believe that gravity caused dust and gas to come together to form individual stars, and that these stars then drew together to form groups that eventually developed into galaxies.

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