two balls of equal mass, moving with speeds of 3 m/s, collide head-on. Find the speed of each after impact if a) they stick together b) the collision is perfectly elastic, c) the coefficient of restitution is 1/3. *Please show all work in detail. The answer is
a. 0 m/s
b. each rebounds at 3 m/s
c. 1 m/s

A white dwarf remains stable in size due to electron degeneracy pressure, which prevents its atoms from collapsing further despite the absence of nuclear fusion reactions.

A white dwarf is a remnant of a low to medium mass star that has exhausted its nuclear fuel and undergone gravitational collapse. As the star's core collapses, its electrons become tightly packed together, leading to electron degeneracy pressure that opposes further compression. This results in a stable size for the white dwarf, where the inward force of gravity is balanced by the outward force of electron degeneracy pressure. Since there are no nuclear fusion reactions to generate heat, the white dwarf eventually cools and dims over time, becoming a cold black dwarf.

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The displacement of Sue would be zero if her home is the origin.

This is because displacement is the change in the position of an object from its origin. To calculate displacement, you have to know the difference in distance of an object from its origin point to its final position. In short, the formula is as follows:

  s = x1 - x2 = Δx

If Sue's home is the origin, then her displacement would be the difference between her final position (home) and her initial position (home), which is zero. Therefore, Sue's displacement is zero.

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Answer:

1.49 x \(10^{11}\)

Explanation:

Kepler's third law states that The square of the orbital period of a planet is directly proportional to the cube of its orbit.

Mathematically, this can be stated as

\(T^{2}\) ∝ \(R^{3}\)

to remove the proportionality sign we introduce a constant

\(T^{2}\) = k\(R^{3}\)

k = \(\frac{T^{2} }{R^{3} }\)

Where T is the orbital period,

and R is the orbit around the sun.

For mars,

T = 687 days

R = 2.279 x \(10^{11}\)

for mars, constant k will be

k = \(\frac{687^{2} }{(2.279*10^{11}) ^{3} }\) = 3.987 x \(10^{-29}\)

For Earth, orbital period T is 365 days, therefore

\(365^{2}\) = 3.987 x \(10^{-29}\) x \(R^{3}\)

\(R^{3}\) = 3.34 x \(10^{33}\)

R = 1.49 x \(10^{11}\)

Answer:

The other person is correct

Explanation:

Edge

To count the number of valence electrons, you need to determine the group number of the element in the periodic table and sum up the valence electrons for all atoms in the molecule or ion.

The Lewis structure is a representation of the molecule or ion, showing the arrangement of atoms and valence electrons. The central atom is usually the least electronegative element or the one with the highest valence. To determine the electron geometry, you consider the arrangement of electron groups (bonded and lone pairs) around the central atom using the VSEPR theory.

Counting the number of valence electrons: Look at the periodic table and find the group number of each element in the molecule or ion. The group number represents the number of valence electrons. For example, carbon (Group 14) has 4 valence electrons, oxygen (Group 16) has 6 valence electrons, etc. Sum up the valence electrons for all atoms to get the total number of valence electrons.

Drawing the Lewis structure: The Lewis structure is a visual representation of a molecule or ion that shows the arrangement of atoms and valence electrons. Start by connecting the atoms with single bonds. Distribute the remaining valence electrons as lone pairs around the atoms, following the octet rule (except for hydrogen, which only needs 2 electrons). Aim to minimize formal charges and achieve stability.

Determining the central atom: The central atom is usually the least electronegative element or the one with the highest valence. Carbon is often a central atom, but other elements like nitrogen or oxygen can also be central depending on the molecule or ion.

Determining the electron geometry: To determine the electron geometry, use the Valence Shell Electron Pair Repulsion (VSEPR) theory. Count the total number of electron groups around the central atom. Electron groups can be bonded pairs (atoms connected by single, double, or triple bonds) or lone pairs.

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A gas water heater is 75% efficient. The energy output used to heat the water is 4.6 kWh.then the energy input is 6.1  kWh

The efficiency of an Indian can be defined as the ratio of the total useful work done by the engine to the total heat absorbed by the engine

It can be represented in the form of percentages or in terms of fractions as well.

In general, the efficiency of an engine is represented by the greek symbol η.

Efficiency = output heat  /input heat

η = output heat /input heat

0.75  = 4.6 kWh /input heat

energy input = 6.1  kWh

Thus, the energy input is 6.1  kWh, therefore the correct answer is option C

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The term you are looking for is "chemical battery". Chemical batteries work by converting chemical energy into electrical energy through a series of chemical reactions. These reactions take place within the battery's cells, which are composed of two electrodes and an electrolyte.

When the battery is connected to a circuit, the chemical reactions produce an electrical current that can be used to power devices. Chemical batteries are widely used in many applications, including consumer electronics, electric vehicles, and renewable energy systems. They are a crucial component of our modern technological society, and ongoing research is focused on developing more efficient and sustainable battery technologies to meet growing energy demands.

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The fluid boundary layer at a distance of 0.5 m from the leading edge would be larger than the surface roughness. This is because the boundary layer thickness increases as the fluid flows further along the flat plate. The head loss across the plate would be affected by this larger boundary layer, potentially leading to increased resistance and higher pressure drop.

The head loss across the plate would be very small, since the fluid flow is still laminar and the boundary layer thickness is much smaller than the surface roughness. The head loss is dominated by the viscous effects in the fluid, and can be neglected for most practical purposes.

The fluid boundary layer is defined as the thin layer of fluid adjacent to the solid surface of an object, such as a flat plate, where the flow is influenced by the viscosity of the fluid. The thickness of this boundary layer increases with the distance from the leading edge of the plate. To determine if the fluid boundary layer at a distance of x = 0.5 m from the leading edge would be less than that of the surface roughness, we need to calculate the thickness of the boundary layer and compare it to the surface roughness. We can use the formula for the boundary layer thickness for laminar flow over a flat plate, given byδ = 5.0x / (Re_x^(1/2)), where δ is the boundary layer thickness, x is the distance from the leading edge of the plate, and Re_x is the Reynolds number at the point x.

The Reynolds number is defined as Re_x = (ρv x) / μwhere ρ is the density of the fluid, v is the velocity of the fluid, x is the distance from the leading edge of the plate, and μ is the dynamic viscosity of the fluid. Substituting the given values, we get Re_x = (ρv x) / μ = (1000 kg/m³ x 2.5 m/s x 0.5 m) / 1.053 x 10^(-6) m²/s = 1.185 x 10^9Using this value of Re_x in the formula for the boundary layer thickness, we getδ = 5.0x / (Re_x^(1/2)) = 5.0 x 0.5 / (1.185 x 10^9)^(1/2) = 1.24 x 10^(-6) m. Therefore, the fluid boundary layer thickness at a distance of x = 0.5 m from the leading edge of the plate is much smaller than the surface roughness of ε = 0.046 mm.

This means that the fluid flow over the plate is still considered to be laminar, and the head loss across the plate can be calculated using the formula for the Darcy- Weisbach friction factor,f_D = 16 / Re_xwhere f_D is the friction factor. The head loss is then given byh_L = f_D (L/D) (v²/2g)where L is the length of the plate, D is the hydraulic diameter of the flow channel, v is the velocity of the fluid, and g is the acceleration due to gravity.

Since the flow is laminar, the friction factor can be calculated using the formula, f_D = 64 / Re_x Substituting the given values, we get, Re_x = 1.185 x 10^9 and D = 4ε = 0.184 mm = 1.84 x 10^(-4) m. Therefore,f_D = 64 / Re_x = 64 / 1.185 x 10^9 = 5.4 x 10^(-8)and h_L = f_D (L/D) (v²/2g) = (5.4 x 10^(-8)) x (1 m / 1.84 x 10^(-4) m) x (2.5 m/s)² / (2 x 9.81 m/s²) = 7.0 x 10^(-6) m.

Therefore, the head loss across the plate would be very small, since the fluid flow is still laminar and the boundary layer thickness is much smaller than the surface roughness. The head loss is dominated by the viscous effects in the fluid, and can be neglected for most practical purposes.

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Simply put different aspects of the electromagnetic spectrum reflect differently. Certain chemicals will absorb different frequencies of light while reflecting others.

The correct responses are;

1) The velocity is 15.0 m/s

2) The net force is 25 N and the acceleration is 1.25 m/s/s due east.

3) The distance covered is 63 m

4) The kinetic energy is  900000 J.

5) The greatest momentum is displayed by a baseball hit with a net force of 10.0 N for 3.0 s

6) The force is now is  one-ninth of the original amount.

7) The data that Carter and Sam want to find out is the  Instantaneous speed

8) The appropriate formula is change in velocity/change in time

The term momentum has to do with the product of the mass and the velocity of a body.

1) We know from the principle of the conservation of momentum that the momentum before collision is the equal to the magnitude of the momentum after Collison in a closed system thus;

3.4 *  23.9 m/s = (3.4 + 2) v

v = 3.4 *  23.9 m/s / (3.4 + 2)

v = 15.0 m/s

2) Mass of the box = 196/9.8 = 20 Kg

The net force that acts on the box = 75 N - 50 N = 25 N

Acceleration =  25 N/ 20 Kg

= 1.25 m/s/s due east.

Thus, the net force is 25 N and the acceleration is 1.25 m/s/s due east.

3) v^2 = u^2 - 2as

v = 0 m/s

u^2 = 2as

s = u^2/2a

s = (25 m/s )^2/ 2 *  5 m/s2

s = 63 m

The distance covered is 63 m

4) Kinetic energy = 1/2 mv^2 = 0.5 * 2000 * (30)^2

=  900000 J

The kinetic energy is  900000 J.

5) The greatest momentum is displayed by a baseball hit with a net force of 10.0 N for 3.0 s

6) The new magnitude of the force between them is  one-ninth of the original amount.

7) The data that Carter and Sam want to find out is the  Instantaneous speed

8) The formula that should be used is change in velocity/change in time.

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Perceptual errors, cognitive biases, and emotions can indeed have negative effects on negotiations. Here are three examples illustrating each:

1. Perceptual error: One common perceptual error is the halo effect, where an overall impression of a person or situation influences the perception of specific attributes or qualities. In a negotiation, I may have made the mistake of perceiving my counterpart as more competent and trustworthy due to their confident demeanor and well-dressed appearance. This perceptual bias may have led me to underestimate their true intentions or overlook potential risks.

2. Cognitive bias: Confirmation bias is a cognitive bias where we seek and interpret information in a way that confirms our pre-existing beliefs or expectations. During a negotiation, I might have had a confirmation bias that my proposed solution was the best option. As a result, I might have selectively paid attention to information that supported my viewpoint and dismissed or ignored evidence that challenged it. This bias could have hindered open-mindedness and prevented me from considering alternative solutions.

3. Emotion: Emotions play a significant role in negotiations and can impact decision-making. For example, I might have experienced strong frustration during a negotiation due to the slow progress and lack of cooperation from the other party. This emotional response could have impaired my ability to think rationally and objectively, leading to impulsive or aggressive behavior. It might have also hindered effective communication and collaboration, potentially damaging the negotiation process.

In negotiations, it's important to be aware of these potential pitfalls and actively work to mitigate their effects. Developing self-awareness, practicing empathy, seeking diverse perspectives, and employing logical analysis can help counteract the negative impact of perceptual errors, cognitive biases, and emotional responses.

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...get food to people in need when they need it...

The magnitude of the dipole moment of a solenoid having 327 turns, a radius of 0.06 m, and a length of 0.06 m carrying a current of 7.80 A is 28.84 A·m².

To find the magnitude of the dipole moment of the solenoid, we can use the formula for the magnetic dipole moment of a solenoid:

Magnetic dipole moment (µ) = Number of turns (N) × Current (I) × Area (A)

First, we have the given values:
- Number of turns (N) = 327 turns
- Current (I) = 7.80 A
- Radius of the solenoid (r) = 0.06 m
- Length of the solenoid (l) = 0.60 m

Next, we'll find the Area (A) of the solenoid using the formula for the area of a circle:
Area (A) = π × r²

A = π × (0.06 m)²
A = 0.0113 m²

Now, we can plug in the values into the formula for magnetic dipole moment:
µ = N × I × A
µ = 327 turns × 7.80 A × 0.0113 m²
µ = 28.84 A·m²

The magnitude of the dipole moment of the solenoid is 28.84 A·m².

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a. No, all of the heat that is added to the water while the water is boiling is converting the liquid state to the gas state.

When water reaches its boiling point, it undergoes a phase transition from the liquid state to the gaseous state. During this transition, the temperature of the water remains constant even though heat is continuously added to the system. This is because the heat energy is primarily used to overcome the intermolecular forces holding the water molecules together rather than increasing the average kinetic energy of the molecules.

In the liquid state, water molecules are held together by cohesive forces, such as hydrogen bonding. When heat is applied to the water, it increases the kinetic energy of the molecules, causing them to move faster. As the temperature of the water rises, the kinetic energy of the molecules increases, but the average potential energy due to intermolecular forces remains relatively constant.

Once the water reaches its boiling point, the added heat energy is used to break the intermolecular forces completely. As water molecules escape from the liquid surface and enter the gas phase, they take away energy in the form of latent heat of vaporization. This latent heat is used solely for the phase transition, and it does not contribute to an increase in temperature.

As a result, the temperature of the boiling water remains constant until all the liquid water has been converted into water vapor. Only after the phase transition is complete and all the water has evaporated will further heat addition lead to an increase in temperature.

Therefore, during the process of boiling, the water temperature does not change as the heat energy is primarily utilized for the conversion of the liquid state to the gas state.

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The mechanical synchronous speed of the 4-pole induction machine with 240 V applied to the stator at 60 Hz is 1800 rpm.

The mechanical synchronous speed of an induction machine is the speed at which the rotating magnetic field produced by the stator winding moves. It can be calculated using the formula:

Ns = 120 * f / P

where Ns is the mechanical synchronous speed in revolutions per minute (rpm), f is the frequency of the applied voltage in hertz (Hz), and P is the number of poles in the machine. In this case, the frequency is given as 60 Hz, and the number of poles is 4. Substituting these values into the formula, we get:

Ns = 120 * 60 / 4

= 1800 rpm

Therefore, the mechanical synchronous speed of the 4-pole induction machine with 240 V applied to the stator at 60 Hz is 1800 rpm. This means that the rotor of the machine would ideally rotate at a speed of 1800 revolutions per minute when the machine is operating under normal synchronous conditions.

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Answer:

D

Explanation: Solve it in apex

The potential energy of crate with a mass of 180 kg at a height of 15 m will be 26460 joules.

The potential energy of a body at height 'h' above the earth surface having mass 'm' is -

E[P] = mgh

The amount of work done in moving the body to height 'h' is equal to E[P] and it is stored inside the body in the form of potential energy.

Given is a crane that raises a crate with a mass of 180 kg to a height of

15 m.

Crate's mass = [M] = 180 Kg

Height at which crate is taken = [h] = 15 m

Acceleration = [g] = + 9.8 m/s²          (by gravity)

The potential energy of the crate will be -

E[P] = mgh

Substituting values, we get -

E[P] = 180 x 9.8 x 15

E[P] = 2700 x 9.8

E[P] = 26460 joules

Therefore, the potential energy of crate with a mass of 180 kg at a height of 15 m will be 26460 joules.

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Answer:

About 22 hours in flight time.

Explanation:

It wouldn't give me the walking time.

Hope I helped ya.

< Sarah >

Answer:

Hmm idk u was tryna take the trip or sum

Explanation:

Answer:

What cell organelle makes turgor pressure in a plant cell

possible? Describe the role of this organelle in this process.

Explanation:

pls help dude

Answer: true

Explanation:

Answer:

true

Explanation:

Using lubricants such as oil or grease can reduce the friction between the surfaces

Answer:

Explanation:

Both are contact forces arising at the interface between two bodies. In the fluid this interface might be irregular, and it completely surrounds a submerged object. For a solid it is usually a single flat surface - but it can be a collection of surfaces, which do not need to be flat or regular, and which can surround the object

Upthrust occurs at a fluid-solid interface whereas normal reaction occurs at a solid-solid surface. However, it is possible to generate the same fluid-like phenomenon of upthrust by immersing a solid object in sand or small beads and agitating them to simulate the pressure of atoms. With 

car moved 80 km to the South. What is its displacement? 80 km South -------------------------------------

Answer:x rays are electromagnetic waves.

x rays are transverse waves

x rays travel at the speed of light

Explanation:

Coriolis effect is responsible for the curving of wind and ocean currents as they move across the planet.

Coriolis effect is a pattern of movement due to the rotation of the Earth. It is responsible for the curving of wind and ocean currents as they move across the planet. This effect is caused by the rotation of the Earth, which causes the objects on the Earth’s surface to move in different directions in different parts of the planet.

The Coriolis effect causes the air and water to move from high-pressure areas to low-pressure areas, which results in the formation of wind and ocean currents. The Coriolis effect causes the wind and ocean currents to curve to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This is due to the fact that the Earth rotates from west to east, causing the objects on its surface to move in different directions depending on their location.

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The percent change frοm the first drοp tο the secοnd drοp is apprοximately 16%.

A value is a numerical οr qualitative measure οf the wοrth, merit, significance, οr usefulness οf a thing οr idea. It can refer tο the mοnetary wοrth οf a physical οbject, such as a car οr a piece οf prοperty, οr tο the impοrtance οr usefulness οf an idea, such as a scientific theοry οr a philοsοphical cοncept.

In mathematics, a value refers tο the specific quantity οr numerical οutput οbtained frοm a functiοn οr equatiοn. The cοncept οf value is οften subjective, as different peοple οr grοups may assign different levels οf wοrth οr impοrtance tο the same οbject οr idea based οn their individual perspectives, experiences, and beliefs.

The change frοm the first drοp tο the secοnd drοp can be calculated by subtracting the first drοp height frοm the secοnd drοp height:

4.3 ft - 3.7 ft = 0.6 ft

The percent οf change frοm the first drοp tο the secοnd drοp can be calculated using the fοllοwing fοrmula:

percent change = (|new value - οld value| / οld value) x 100%

where | | denοtes absοlute value. In this case, the οld value is the first drοp height and the new value is the secοnd drοp height.

Substituting the values, we get:

percent change = (|4.3 ft - 3.7 ft| / 3.7 ft) x 100%

percent change = (0.6 ft / 3.7 ft) x 100%

percent change = 16.22%

Therefοre, the percent οf change frοm the first drοp tο the secοnd drοp is apprοximately 16%.

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Degrees between the melting point of ice and boiling point of water on the Celsius scale, Fahrenheit scale, and Kelvin scale are 100°C, 180°F, and 100K. respectively.

The number of degrees between the melting point of ice and boiling point of water on the Celsius scale, Fahrenheit scale, and Kelvin scale are given below.

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Given data:

* The electrostatic force of repulsion between the charged bodies in the initial state is,

* The distance between the charged bodies in the initial state is,

* The distance between the charged bodies in the final state is,

Solution:

According to Coulomb's law, the electrostatic force of repulsion between the charged bodies in the initial state is,

where k is the electrostatic force constant, q_1 is the charge on the first charged body and q_2 is the charge on the second charged body,

The electrostatic force of repulsion between the charged bodies in the final state is,

Substituting the known values,

Thus, the electrostatic force of repulsion between the charged bodies in the final state is,

A significant role is played by (b) Connecticut in the origination of the Chester White pig breed.

The breed was developed by Samuel Waring, a farmer from Chester, Connecticut, in the early 19th century. Waring selectively bred white pigs with excellent meat quality and maternal traits, resulting in the establishment of the Chester White breed.

The pigs were known for their large size, durability, and adaptability to various climates. Over time, the Chester White breed gained popularity across the United States, particularly in the Midwest and Northeast regions. While other states, such as Pennsylvania and New Jersey, also had involvement in pig breeding, Connecticut holds a prominent place in the breed's origin and development.

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The time interval in which the acceleration is positive is, 0 sec to 4 sec. So option B is correct

Acceleration is a vector quantity that describes the rate at which an object changes its velocity. It is the rate at which the velocity of an object changes in magnitude or direction, or both. In other words, it tells us how quickly an object is speeding up or slowing down. Acceleration has units of meter per second squared (m/s²) and its direction is the same as the direction of the change in velocity.

Given that,

A v-t graph,

In a graph, it can be seen that

In the interval,

0 sec to 4 sec

Velocity is increasing,

So, rate of change will be positive,

It means acceleration is positive

4sec to 6sec

Velocity is decreasing,

So, rate of change will be negative,

It means acceleration is negative

Hence, the interval is 0sec to 4sec

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The correct terms that fills the box are;

(i) The incident ray

(ii) The normal

(iii) The reflected ray

(iv) The angle of incident

(v) The reflected angle

The terms of the ray diagram is illustrated as follows;

(i) This arrow indicates the incident ray, which is known as the incoming ray.

(ii) This arrow indicates the normal, a perpendicular line to the plane of incidence.

(iii) This arrow indicates the reflected ray; the out going arrow.

(iv) This the angle of incident or incident angle.

(v) This is the reflected angle or angle of reflection.

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