an electron is accelerated toward a target. find the minimum accelerating potential difference (magnitude) that would

Fraction of the initial kinetic energy is lost in the collision f = 3/4.

Two balls of masses M and 3M kinetic energy

Initially before collision:

Speed of ball of mass M = −V0 (Right direction is taken as negative)

Speed of ball of mass 3M = +V0

Finally after collision: Speed of ball of mass M = v

Speed of ball of mass 3M = V02

\(Finding the fraction(f) of initial kinetic energy lost in the collisionf=1−Final Kinetic EnergyInitial Kinetic Energyf=1−12×M×(v02)2+12×3M×(v02)212×M×(−v0)2+12×3M×(v0)2f=1−v024v02f=1−14=34\)

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Answer:

Friction

Explanation:

friction is the force that tries to slow things down when two things are rubbed together.

Answer:

That is friction don't know

Explanation:

how I know that

Answer:

its c. 9km

Explanation:

Because it you add the 4km+5km that gives you a total of 9km

Answer: c

Explanation:

In a conventional current flow model, current is considered as the flow of positive charges. According to this model, the direction of current is defined as the direction in which positive charges would flow.

In reality, however, the actual flow of charges is due to the movement of negatively charged electrons.

In a closed circuit, the conventional current flows from the positive terminal of the power source (such as a battery) towards the negative terminal. This convention was established before the discovery of the electron's negative charge. The positive charges, which are typically attributed to protons in the atoms, are considered to move in the opposite direction to the actual flow of electrons.

So, if we were to observe a circuit from the perspective of conventional current flow, the current would be flowing from the positive terminal to the negative terminal of the power source. This convention helps establish a consistent reference for understanding and analyzing electrical circuits, even though it contradicts the actual movement of electrons.

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For this assignment, you will develop several models that show how light waves and mechanical waves are reflected, absorbed, or transmitted through various materials. For each model, you will write a brief description of the interaction between the wave and the material. You will also compose two typewritten paragraphs. The first will compare and contrast light waves interacting with different materials. The second will explain why materials with certain properties are well suited for particular functions.

A wave is any disturbance that carries energy from one place to another. There are two different types of waves: mechanical and electromagnetic. A mechanical wave carries energy through matter. Energy is transferred through vibrating particles of matter. Examples of mechanical waves include ocean waves, sound waves, and seismic waves. Like a mechanical wave, an electromagnetic wave can also carry energy through matter. However, unlike a mechanical wave, an electromagnetic wave does not need particles of matter to carry energy. Examples of electromagnetic waves include microwaves, visible light, X-rays, and radiation from the Sun.

Answer:

Here the other guy is right I’m answering so he can be marked brainliest

Explanation:

Answer:

The scientific method

Make an observation.

Ask a question.

Form a hypothesis, or testable explanation.

Make a prediction based on the hypothesis.

Test the prediction.

Iterate: use the results to make new hypotheses or predictions.

Explanation:

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 30 \times {15}^{2} \\ = 15 \times {15}^{2} \\ = {15}^{3} \: \: \: \: \: \: \: \: \: \: \)

We have the final answer as

Hope this helps you

One statement that is not true is that UV radiation is a type of electromagnetic radiation. It is also a type of ionizing radiation. UV radiation is actually a form of non-ionizing radiation.

UV radiation, or ultraviolet radiation, is a type of electromagnetic radiation that falls between visible light and X-rays on the electromagnetic spectrum. It is often categorized into three types: UVA, UVB, and UVC. Unlike ionizing radiation, such as X-rays and gamma rays, which have enough energy to remove tightly bound electrons from atoms or molecules, UV radiation lacks the necessary energy to ionize atoms or molecules. Instead, it primarily interacts with the outermost electrons of atoms or molecules, leading to chemical reactions and causing biological effects.

UV radiation is commonly associated with sunlight and has various effects on living organisms and materials. It can cause sunburn, premature aging of the skin, and an increased risk of skin cancer. Exposure to excessive UV radiation can also damage the eyes and impair the immune system. It is important to protect oneself from excessive UV exposure by wearing sunscreen, protective clothing, and sunglasses.

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When an aluminum rod is placed in the middle of an inductor, the resonance frequency of the LRC circuit should: decrease

The inductance of an inductor depends on its physical dimensions and the material it is made of. Placing an aluminum rod in the middle of an inductor changes its effective inductance due to the presence of the conductive material. Since the effective inductance is reduced, the resonance frequency of the LRC circuit is decreased. This is because the resonance frequency depends on the values of the inductance, capacitance, and resistance in the circuit, and a decrease in inductance results in a decrease in the resonance frequency. This effect can be utilized in various applications, such as in proximity sensors and metal detectors.

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Answer: A basketball is something that can have a physical or chemical change done to it.

Explanation:

A basketball is made of matter. The fire itself is not a matter however, the wood that burns is matter. A basketball is very different from a fire because a basketball has some mass in it on the other hand fire does not contain any mass

Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gas, and plasma.

These different states of matter have different characteristics according to which they vary their volume and shape.

For any substance to be considered as matter it must have to contain some mass and occupies some space.

As given in the problem statement a basketball is made of matter. The fire itself is not a matter however, the wood that burns is matter. A basketball is very different from a fire because a basketball has some mass in it on the other hand fire does not contain any mass.

For any substance to be considered as matter it must have to contain some mass and occupies some space.

Thus, a basketball is considered a matter but fire is not considered a form of matter.

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The net displacement can be calculated by summing the three vectors.

15m, \(135^{0}\) have x = -7.5m and y = 7.5m

35m, \(40^{0}\) NW have x = -26,8m and y = 22.5m

20m, \(15^{0}\) NE have x = 19.3m and y = 5.2m

The the net displacement is x = -15m and y = 35.2m or 38.26m, \(23.07^{0}\) NW

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An archeologist is exploring a cave; she follows a secret passage 15 m, 135°, then 35 m, 40° NW. Finally, 20 m, 15° NE. The net displacement -15m and y = 35.2m or 38.26m,  NW.

The net displacement can be calculated by summing the three vectors.

15m,  have x = -7.5m and y = 7.5m

35m,  NW have x = -26,8m and y = 22.5m

20m,  NE have x = 19.3m and y = 5.2m

The the net displacement is x = -15m and y = 35.2m or 38.26m,  NW

Displacement vectors have a length or magnitude equal to the shortest distance between a start point and an end point. Adding vectors to get a net displacement requires separating them by dimensions, and . And displacement vectors, like all vectors, have both a magnitude, or length, and a direction.

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Answer: 3) 2.0

Explanation: I guessed and got it right on my assignment :)

The student conducted an enzyme experiment using different concentrations of amylase and measured the time taken for the disappearance of starch. The results were converted to 1/T (rate of reaction) to analyze the data.

A table and graph were created to visualize the results. A biological explanation is provided to account for the observed outcomes.

Table of Results:

| Amylase Concentration (%) | Time for Disappearance of Starch (seconds) | 1/T (Rate of Reaction) |

|---------------------------|-------------------------------------------|-----------------------|

| 0.05                      | 1475                                      | 0.00068               |

| 0.1                       | 735                                       | 0.00136               |

| 0.15                      | 520                                       | 0.00192               |

| 0.2                       | 365                                       | 0.00274               |

| 0.25                      | 275                                       | 0.00364               |

Graph: (Please note that I'm a text-based AI and cannot directly create or insert images. You can create the graph using Excel or any graphing software.)

Explanation:

The data shows that as the concentration of amylase increases, the rate of reaction (1/T) also increases. This is evident from the decreasing time taken for the disappearance of starch. The inverse relationship between reaction time and enzyme concentration suggests that higher enzyme concentrations lead to faster reactions.

Enzymes, like amylase, are biological catalysts that facilitate chemical reactions. They work by binding to substrates (in this case, starch) and converting them into products (such as simple sugars). The rate of reaction is influenced by enzyme concentration because a higher concentration provides more enzyme molecules available to bind with the substrate.

When the enzyme concentration is low (0.05% amylase), the reaction proceeds slowly, resulting in a longer time for starch disappearance. As the concentration increases, more enzymes are available to catalyze the reaction, leading to faster starch breakdown and shorter reaction times. However, there is a limit to this effect, as seen with the 0.25% amylase, where the rate of increase in reaction rate starts to diminish.

The pH buffer of 7 used in the experiment helps maintain a constant pH level, as enzymes have an optimum pH at which they function most efficiently. This ensures that the pH does not become a limiting factor in the experiment.

Overall, the results demonstrate the relationship between enzyme concentration and the rate of reaction, highlighting the crucial role of enzymes in accelerating biochemical processes.

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We have that  the velocity of the image approaching towards the object is

\(x=3.33m/s\)

From the question we are told

A plane mirror moves towards the object with a velocity of 2m/s and the object itself moves towards the mirror with a velocity of 5m/s. What is the velocity of the image approaching towards the object?

Generally the equation for the velocity of the image  is mathematically given as

\(\frac{1}{f}=\frac{1}{v}+\frac{1}{u}\\\\Therefore\\\\\frac{1}{2}=\frac{1}{x}+\frac{1}{5}\\\\\frac{1}{x}=\frac{1}{2}-+\frac{1}{5}\\\\\frac{1}{x}=0.3\)

\(x=3.33m/s\)

Therefore

the velocity of the image approaching towards the object is

\(x=3.33m/s\)

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The  constructor equation of the geometric optics allows to find the result for the speed of the image is  7 m/s

Geometric optics analyzes the formation of images with different objects, for this it uses the  constructor equation

          \(\frac{1}{f} = \frac{1}{p} + \frac{1}{q}\)

Where f is the focal length, p the distance a to the object and q the distance to the image

In this case we have a plane mirror, a plane object has its radius of curvature at infinity (f = ∞), consequently

          p = q

If we derive this expression with respect to time

         \(\frac{dp}{dt} = \frac{dq}{dt}\)

The speed of the object and the image is the same.

In all these equation is the mirror or lens are considered fixed in space

In this case we have that the object moves towards the mirror at v₀ = 2 m / s and the mirror moves towards the object at \(v_m\) = 5 m / s

To consider the mirror fixed in space, we must find the relative velocity of the object with respect to the mirror; the body approaches the speeds add                

             \(v_{om} = v_o +v_m\)

Where \(v_{om}\) speed of the object with respect to the mirror, v₀ and \(v_m\) are the velocities of the object and the mirror, respectively

         \(v_{om}\) = 5 + 2

         v_{om} = 7 m / s

The speed of the image and the object are equal, therefore the image speed is:

            v = 7 m / s

In conclusion using the  constructor equation allow to find the result for the image speed is 7 m / s

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A star is moving directly toward earth at a large fraction of the speed of light. The light we observe from this star compared to the light received from the same star if it were at rest relative to earth will be blueshifted.

The elements of Earth are land, air, water, and life. Mountains, valleys, and flat places can all be found on the ground. Different gases, namely nitrogen and oxygen, make up the air. Rain, snow, ice, rivers, lakes, oceans, and streams are all examples of water. Doppler shift is the term used in physics to describe this phenomena, which is the alteration in wave frequency caused by an observer moving in respect to the source.

But much like the other planets, Earth is a planet that exists in space and is a part of the cosmos. It so happens that life exists here and that the conditions close to this planet's surface are favourable for life as we know it. The tiny, delicate planet Earth stands out in the universe.

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The atmospheric pressures at the top and the bottom of a mountain are read by a barometer to be 93.8 and 100.5 kPa. If the average density of air is 1.25 kg/m3, The height of the mountain is approximately 546.31 meters.

To find the height of the mountain using the given atmospheric pressures at the top and bottom, we can use the hydrostatic pressure formula:
ΔP = ρgh
Where ΔP is the difference in atmospheric pressure, ρ is the average air density, g is the acceleration due to gravity (approximately 9.81 m/s²), and h is the height of the mountain.
First, calculate the difference in atmospheric pressure:
ΔP = P_bottom - P_top = 100.5 kPa - 93.8 kPa = 6.7 kPa
Convert kPa to Pa:
ΔP = 6.7 kPa × 1000 = 6700 Pa
Now, rearrange the formula to find the height of the mountain:
h = ΔP / (ρg)
Plug in the given values:
h = 6700 Pa / (1.25 kg/m³ × 9.81 m/s²) ≈ 546.31 meters
The height of the mountain is approximately 546.31 meters.

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An exoplanet found using its star's Doppler shift is likely a "dynamically detected exoplanet" or a "radial velocity exoplanet," indicating its presence based on the gravitational influence it has on its host star's motion.

When an exoplanet is discovered using its star's Doppler shift, it is typically referred to as a "dynamically detected exoplanet" or a "radial velocity exoplanet." This detection method relies on observing the subtle shifts in a star's spectrum caused by the gravitational tug of an orbiting exoplanet. As the planet orbits the star, its gravitational influence induces a small back-and-forth motion in the star. This motion leads to periodic changes in the star's radial velocity, which can be detected through the Doppler effect. By analyzing the shifts in the star's spectrum, scientists can infer the presence of an exoplanet, as well as some of its orbital characteristics, such as its mass and orbital period.

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A bond that is formed by a positively charged ion to a negatively charged ion is termed as an ionic bond. An example is sodium chloride.

When two atoms with great difference in electronegativities forms a bond, the electrons are completely transferred between the atoms and are ionized. These positive and negative charged ions forms a bond purely based on the electrostatic force of attraction. Such a compound is called an ionic compound.

Usually an electropositive metal in 1st and 2nd group of periodic table  reacts with non-metals in 16th and 17th group to form ionic compounds. Lets consider the example of sodium chloride.

The electronic configuration of sodium is 2, 11, 1

Electronic configuration of chlorine is 2, 8, 7

Sodium is an electropositive metal and it has a tendency to lose electron to complete octet electronic configuration. Chlorine on the other hand is an electronegative non- metal, tends to lose electrons. So the sodium when reacting with chlorine loses its outer electron and become Na⁺ and the chlorine gains the electron and become Cl⁻.

So an electrostatic force of attraction is formed between the ions and form the compound Na⁺Cl⁻.

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D. Must be implemented using a computer.

It is possible to make scientific models without computers and/or other technology.

Answer:

D.

Explanation:

thnks mark me brainliest

Answer:

100 N

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 5 kg

Acceleration (a) = 20 m/s

Force (F) =?

Force is simply defined as the product of mass and acceleration. Mathematically, it can be expressed as:

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

F = ma

With the above formula, we can obtain the force need to move the object. This can be obtained as follow:

Mass (m) = 5 kg

Acceleration (a) = 20 m/s

Force (F) =?

F = ma

F = 5 × 20

F = 100 N

Therefore, a force of 100 N is needed to move the object.

It makes data more symmetric: Log transformations can help make data more symmetric, which can make it easier to apply statistical techniques such as regression analysis.

Using logged values compared to using non-logged values for visualizing macroeconomic data has several advantages:

It reduces the impact of outliers: Log transformations compress large values and expand small values, which can help reduce the impact of outliers in the data.

It stabilizes variance: In many cases, the variance of macroeconomic data increases as the level of the variable increases. Log transformations can help stabilize the variance, making it easier to apply statistical techniques that assume a constant variance.

It enhances interpretability: Log transformations can enhance the interpretability of the data by making it easier to compare percentage changes in the data. For example, a 1% change in a variable that has been log-transformed corresponds to a constant change in the logged value, making it easier to interpret the significance of the change.

Overall, using logged values for visualizing macroeconomic data can help make the data more interpretable, reduce the impact of outliers, stabilize variance, and make the data more symmetric, which can facilitate statistical analysis and modeling.

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Im not sure what your question is? Are you asking if humans have contributed to global warming?

The mass of Deimos is approximately 9.52 x 10^15 kg.

To find the mass of Deimos, we can use the formula for gravitational force:F = G * (m1 * m2) / r^2. where F is the gravitational force between two objects, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers of mass.

In this problem, we know the radius of Deimos (r = 6.3 km = 6.3 x 10^3 m), the mass of the rock on its surface (m1 = 3.0 kg), and the gravitational force between them (F = 2.5 x 10^-2 N). We can also look up the value of G: G = 6.674 x 10^-11 N(m/kg)^2.

We want to solve for the mass of Deimos (m2). Rearranging the formula, we get: m2 = (F * r^2) / (G * m1). Substituting the given values, we get: m2 = (2.5 x 10^-2 N) * (6.3 x 10^3 m)^2 / (6.674 x 10^-11 N(m/kg)^2 * 3.0 kg). m2 = 9.52 x 10^15 kg.Therefore, the mass of Deimos is approximately 9.52 x 10^15 kg.

It is worth noting that this calculation assumes that the rock on Deimos' surface is not affecting its orbit significantly. In reality, the gravitational force between the rock and Deimos would cause some perturbations in Deimos' orbit, but they are likely to be very small due to the small mass of the rock compared to Deimos.

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To find the mass of Deimos, we can use the gravitational force formula:
F = G * (m1 * m2) / r^2

Where F is the gravitational force (2.5 * 10^(-2) N), G is the gravitational constant (6.674 * 10^(-11) Nm^2/kg^2), m1 is the mass of Deimos (which we want to find), m2 is the mass of the rock (3.0 kg), and r is the distance between their centers, which is equal to Deimos' radius (6.3 km or 6300 m).

Rearranging the formula to solve for m1 (the mass of Deimos):

m1 = (F * r^2) / (G * m2)

m1 = (2.5 * 10^(-2) N * (6300 m)^2) / (6.674 * 10^(-11) Nm^2/kg^2 * 3.0 kg)

After calculating, we find that the mass of Deimos is approximately 1.0 * 10^15 kg.

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Answer:

b  

Explanation:

because if you freeze somthing you do not gain heat you loss heat.

Ionic compounds give and receive electrons so that they have eight valence electrons in their outermost shell and form a stable electron configuration. They are usually formed between metals and non-metals and have high melting and boiling points due to strong electrostatic forces between oppositely charged ions.

Ionic compounds form a crystalline lattice structure. The ionic compound can have a total of 8 valence electrons in its outer shell to achieve a stable electron configuration. Ionic compounds usually exist as solids in their natural state and have high melting points. Sodium Chloride (NaCl) is an example of an ionic compound. They typically dissolve in polar solvents, and their properties are mainly determined by the ratio of the positively and negatively charged ions in the crystal structure. Most ionic compounds are soluble in water and can conduct electricity when melted or dissolved in a polar solvent. Hence, Ionic compounds give and receive electrons, so their compound can have a total of 8 valence electrons altogether.  

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The distance between first airplane and second airplane after 1.8 hours of their departure is 1598.22 meters.

The cosine formula for vector addition is -

|R|² = |A|² + |B|² + 2AB cosφ

Where - φ is the angle between vectors A and B.

Given is two airplanes that leave the airport at same time. The velocity of the first airplane is 690 m/h at a heading of 68.5°. The velocity of the second airplane is 590 m/h at a heading of 156°.

The length of the position vector of first airplane →

|OA| = velocity x time = 690 x 1.8 = 1242 miles.

The length of the position vector of second airplane →

|OB| = velocity x time = 590 x 1.8 = 1062 miles

Angle between vectors OA and OB →

φ = 156° - 68.5° = 87.5°

In the triangle ΔOAB, using the triangle law of vector addition, we get →

OA + AB = OB

AB = OB - OA

AB = OB + (- OA)

Now, using the formula for resultant of addition of two vectors →

AB² = (OB)² + (- OA)² + 2(OA)(- OB) cosφ

AB² = OB² + OA² + - 2(OA)(OB)cosφ

AB² = 11,27,844 + 15,42,564 - 2 x 1242 x 1062 x cos(87.5°)

AB² = 11,27,844 + 15,42,564 - 2 x 1242 x 1062 x 0.044

AB² = 26,70,408 - 1,16,072.352 = 25,54,335.648

AB = √25,54,335.648

AB = 1598.22 meters

Hence, the distance between first airplane and second airplane after 1.8 hours of their departure is 1598.22 meters.

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Answer:

the gravity was pulling the cup to the front of the window even though the wind was pushing it the other way.

Explanation: the gravity must be strong

By using the Newton's first law of Motion, it can be explained why the coffee spilt all over the windshield. This is because there is gravitational force which acts upon it and it pushes the substances in the downward direction towards the Earth.

Newton's first law of Motion states that a body remains in the same state of rest or uniform motion in a straight line unless and until an external force is applied on it. This means that a body will not start moving by itself until and unless an external force acts on it.

In this case, lachance's daughter is trying to pick her coffee cup, the coffee cup at the windshield is spilt which makes it difficult for her to see. This is because, there is the gravitational force or gravity which is pulling the coffee cup to the front of the window even though the wind was pushing it in the other way.

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Answer:

1.8m/s2

Explanation:

force=mass x acceleration

so,

acceleration=force /mass

=45/25

=1.8