Complete the passage to describe how electrons are represented in electron dot diagrams.
The maximum number of dots an electron dot diagram can have is The maximum number of dots drawn on
a side of a chemical symbol in an electron dot diagram is
ctivity

Answer:

Fastest: Norco

Slowest: Mt luna

The forward movement of the shoulder girdle in the horizontal plane away from the spine is referred to as protraction.

The movement that results in a portion of the body being moved forward on a plane parallel to the ground. RETRACTION (the reverse of protraction): movement that results in the protracted portion of the body being moved on a parallel plane, back to its original position. Protraction is accomplished by the actions of the serratus anterior, pectoralis major, and pectoralis minor muscles.

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The magnitude of the friction force on the box is 36N.

The force applied by the man to push the box of mass 80kg is 180N.

the acceleration of the block is 1.80m/s².

Now, we know,

Acceleration = Net force/mass

A = F/M

Now, the net force will be applied force minus frictional force.

So, if the frictional force is Fr and the applied force is F, then we can write,

a = F-Fr/M

Putting values,

1.80 = 180-Fr/80

Fr = 36N.

So, the frictional force is 36N in magnitude.

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Answer:

Explanation:

1. It is greater than the energy absorbed in breaking the bonds. The excess is converted to thermal energy.

2. The nuclei and electrons of the atoms are attracted to each other

3. thermal energy

4. II and III only

5. It converts to thermal energy.

Answer:

D

Explanation:

just did the quiz :)

The correct answer is  P =5.81   kg.m/s.

Given that

m=250g = 0.250 Kg

U= 25 m/s

θ=30°

t= 0.2 s

This is the case of projectile motion

So the horizontal component of velocity U =  u cosθ

u = 25 cosθ

u = 25 cos 30°

u=21.65 m/s

The vertical component of velocity U = U sinθ

Vo= U sinθ

Vo= 25 sin 30°

Vo = 12.5 m/s

We know that horizontal component of velocity of ball will remain same.So the horizontal component of momentum

Px= m u

Px= 0.250 x 12.5 kg.m/s

Px=3. 125 kg.m/s

The vertical component of ball after 0.2s

V= Vo- g t

V= 21.65 - 10 x 0.2 m/s

V= 19.65 m/s

Py= m V

Py= 0.250 x 19.65 kg.m/s

Py= 4.91 kg.m/s

P=3. 125 i +4.91 j kg.m/s

Magnitude of momentum= 5.81 kg.m/s.

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Answer: Equilibrium is the state in which market supply and demand balance each other, and as a result prices become stable. The balancing effect of supply and demand results in a state of equilibrium.

This is the answer please ap mujhe follow kar lo please

New kinetic energy:

If the initial kinetic energy of a car is 0.3 MJ and the speed of the car decreased two times then the new kinetic energy will be 0.075 MJ.

The calculation for kinetic energy:

Step-1:

It is given that the car has a kinetic energy of 0.3 MJ. It is required to find the new kinetic energy when the car's speed decreases two times from its initial speed.

Let the mass of the car is m and the initial speed of the car is v.

It is known that the kinetic energy is calculated as,

\(\text{K.E}=\frac{1}{2}\times \text{mass}\times\text{speed}^2\)

Therefore the initial kinetic energy is the car is,

\(\text{K.E}_1=\frac{1}{2}\times \text{m}\times\text{v}^2\)

Step-2:

The speed of the car is decreased two times. Thus the speed becomes v/2. Therefore the final kinetic energy is the car is,

\(\text{K.E}_2&=\frac{1}{2}\times \text{m}\times(\frac{v}{2})^2\\&=\frac{1}{4}\times\frac{1}{2}\times \text{m}\times\text{v}^2\\&=\frac{1}{4}\times\text{K.E}_1\\&=\frac{1}{4}\times {0.3}\text{ MJ}\\&=0.075 \text{MJ}\)

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R = [(100 - l) * 40]/ l, where l is the length of the wire from the unknown resistance to the balance point.

For a balance point length of l, the resistance of the unknown resistor is given by the above equation.

In a meter bridge experiment, a balance point was found in the wire corresponding resistance  when a resistance of 40 ohms was connected to the other arm of the bridge. Find the value of R.A meter bridge is a device used to calculate the resistance of an unknown conductor.

A uniform wire of resistance R is used to set up a meter bridge. A galvanometer and a battery are both connected to the wire ends at the ends. A jockey is slid along the wire to identify the point of balance, which is shown by no deflection on the galvanometer.

At this stage, the bridge is balanced since the potential difference on either side of the galvanometer is zero. The value of the unknown resistance is determined using the meter bridge formula.

The balanced point can be computed by:

R=ρl / A, where R is the resistance of the uniform wire, ρ is the resistivity of the material, l is the length of the wire and A is the cross-sectional area of the wire.

In the equation above, the resistivity and cross-sectional area of the wire are constants, and the length of the wire is known. To find the unknown resistance R, we will need to use the formula below:

R = [(100 - l) * 40]/ l, where l is the length of the wire from the unknown resistance to the balance point.

For a balance point length of l, the resistance of the unknown resistor is given by the above equation.

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At the instant shown, the six scenarios can be ranked in terms of the magnitude of current in the light bulb as follows:

1) Scenario 1 - Here, the battery is directly connected to the light bulb without any other resistors in the circuit. Therefore, the current flowing through the bulb will be the maximum among all the scenarios.

2) Scenario 3 - In this case, the battery is connected to the light bulb through a resistor. However, the resistance is less compared to other scenarios, so the current will be higher than in other cases.

3) Scenario 4 - Here, the battery is connected to the light bulb through a higher resistance compared to scenario 3. This will result in a lesser current in the bulb.

4) Scenario 5 - In this scenario, the battery is connected to the light bulb through a much higher resistance than in the previous two scenarios. Therefore, the current flowing through the bulb will be lower.

5) Scenario 6 - Here, the battery is connected to the circuit in such a way that the current will bypass the light bulb. Therefore, the bulb will not light up and the current flowing through it will be zero.

6) Scenario 2 - This scenario is similar to scenario 6 where the switch is open, so the circuit is not complete, and hence there will be no current flowing through the light bulb.

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The distance between the moth and its image in the mirror is equal to the distance between the moth and your eyes, which is equal to 43.7 centimeters.

The distance from the moth to its image is 16.4 cm, which is equal to 48.8 cm, because it's a plane mirror. So, if you want to know how far away from you the moth looks like it is, just subtract 48.8 cm (the distance between your eyes) from 16.4 cm (the distance between you and the moth).

The angle between these two objects is 48 degrees,

so S = 1/2  2  sin(48)

= 0.958 meters.

Moth + Mirror (dist1) + Me (dist2) = 48 * 0.958 = 43.7 centimeters

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Answer:

C

Explanation:

Apply the uniform acceleration equation \(v^{2} = u^{2} +2as\)

v: Final velocity (When the stone reaches its maximum height)

u: Initial velocity (The velocity of the stone at the instance when it is thrown)

a: Acceleration due to gravity

s: Displacement of the stone

Take \(v=0m/s\) since the stone is momentarily at rest when it reaches its maximum height.

Take \(a = -9.81 m/s^2\), the negative sign indicates the stone is decelerating due to gravity.

Take \(s=10m\) as stated in the question.

\(0^2=u^2+2(-9.81)(10)\)

\(196.2=u^2\)

\(u=\sqrt{196.2}\)

\(u=14.00714104m/s\)

Therefore, the closest answer is C (\(14m/s\))

Answer:

Equivalent

A conversion factor is a ratio of equivalent measures

Answer:

i think about 218 cm3

Explanation:

water expands by about 9% when it freezes so 200* 1.09=218

\

Not sure if I'm correct though

Answer: There are \(6.25 \times 10^{18}\) protons present in one coulomb of charge​.

Explanation:

Given: Charge on proton = \(1.6 \times 10^{-19} C\)

It is known that the charge on a proton is equal to the charge present on an electron.

Formula used to calculate number of protons is as follows.

Q = ne

where,

Q = charge considered

n = number of protons

e = charge on electron or proton

Substitute the values into above formula as follows.

\(Q = ne\\1 C = n \times 1.6 \times 10^{-19} C\\n = 0.625 \times 10^{19}\\= 6.25 \times 10^{18}\)

Thus, we can conclude that there are \(6.25 \times 10^{18}\) protons present in one coulomb of charge​.

The property that makes the radio waves to travel over a very large distance is the fact that it has a long wavelength.

We know that radio communication have given birth to the modern communication gadgets that we have now that involves the fact that we can be able to send signals over a very long distance.

It should be noted that the use of the radio waves is made quite easy because the radio waves can be able to travel across a very large distance and can be able to move at a very fast pace from one place to the other.

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Answer:

Explanation:

a

Increasing following distance to Four-seconds when encountering other motorists who follow too closely  is an example of appropriate implementation of the IPDE defensive driving strategy for the  maintenance of an appropriate Safety Cushion.

Continuous scanning is essential to manage the nine to fifteen space driving zones while maintaining the necessary safety cushion while using the IPDE defensive driving approach. As a result, drivers need to be able to recognise the objects and hazards in their line of sight and their direction of movement.

They ought to anticipate potential conflict hotspots. They should decide what driving behaviours are suitable and safe to use, when, and where. In order to ensure that confrontations are avoided, action must be taken.

Identify, Predict, Decide, and Execute is the acronym for IPDE. Off-road driving should also employ this tactic. Determine any items or situations that could be problematic for you while driving. Make an educated guess as to what might happen when you come across the thing or condition.

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Answer:

the displacement of the object is 5 units

Explanation:

The computation of the displacement of the object is shown below:

= Move to the right + move to the right - move to the left

= 6 units + 3 units - 4 units

= 9 units - 4 units

= 5 units

Hence, the displacement of the object is 5 units

The electric motor must supply a torque of approximately 0.0606 N m to take the disk from 0 to 2000 rpm in 4.4 s.

To find the torque required by the electric motor, we'll first need to determine the angular acceleration of the disk. Here are the steps:

1. Convert 2000 rpm to radians per second:
(2000 revolutions/min) * (2π radians/revolution) * (1 min/60 s) ≈ 209.44 radians/s

2. Find the angular acceleration (α):
α = (ω_final - ω_initial) / time
α = (209.44 radians/s - 0) / 4.4 s ≈ 47.6 radians/s²

3. Calculate the moment of inertia (I) for the disk:
I = 1/2 * m * r^2
I = 1/2 * 0.23 kg * (0.105 m)^2 ≈ 0.00127225 kg m²

4. Determine the torque (τ) using the formula:
τ = I * α
τ ≈ 0.00127225 kg m² * 47.6 radians/s² ≈ 0.0606 N m

The electric motor must supply a torque of approximately 0.0606 N m to take the disk from 0 to 2000 rpm in 4.4 s.

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The mass of a 32He nucleus is less than the sum of the masses of a 1H nucleus and a 2H nucleus separated from each other.

A nucleus is the core of an atom that has a positive electric charge. It is composed of two forms of nucleons: protons, which have a positive electric charge, and neutrons, which are electrically neutral. The number of protons in a nucleus determines the atomic number of the atom in question.The mass of a 32He nucleus is less than the sum of the masses of a 1H nucleus and a 2H nucleus separated from each other.This is because when two nuclei combine to form a new nucleus, some of the mass is converted into energy. This is known as the mass defect. The mass defect is given by the equation:Δm = ∆E/c^2

where Δm is the mass defect, ΔE is the energy released, and c is the speed of light.

The energy released when two nuclei combine is due to the strong nuclear force, which is the force that holds the nucleus together. The strong nuclear force is a very short-range force, so it only acts between nucleons (protons and neutrons) that are very close together. When two nuclei combine, the nucleons are brought closer together, which increases the strength of the strong nuclear force and releases energy.

The mass defect is a very small amount of mass, but it is significant because it is the source of the energy released in nuclear reactions. Nuclear reactions are used to generate electricity in nuclear power plants and to create nuclear weapons.

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Answer:

true

Explanation:

The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.

Answer:

Yes, but only if it's sunny.

Explanation:

As you know, solar panels generate energy through the sun's rays of light (better known as sunlight). Therefore, as long as the sun is shining high in the sky, the car will generate electricity and be able to function. If this vehicle was only powered by solar panels, it would not function during the night, in cloudy areas, and/or in dark places (such as parking garages or home garages).

Hope this helps!

Answer:

F = 4117.64

Explanation:

First, we will calculate the acceleration of the hand, by using the third equation of motion:

\(2as = v_f^2 - v_i^2\\\)

where,

a = acceleration = ?

s = distance covered = compression = 8.5 cm = 0.085 m

vf = final speed = 0 m/s

vi = iniial speed = 10 m/s

Therefore,

\(2a(0.085\ m) = (0\ m/s)^2-(10\ m/s)^2\\a = - 588.23\ m/s^2\)

negative sign hows deceleration.

Now, we will calculate the force exerted by the hand:

\(F = ma = (7\ kg)(588.23\ m/s^2)\\\)

F = 4117.64 N

Answer:

horizontal velocity remaing constan thorough out the motion but the vertical motion's velocity changes due to the gravity acting on it.

for everl 1 second the velocity decreases by 9.8 that is the gravity

To imagine that you were chosen to fly the first space shuttle that could travel at the speed of light and write a story about the trip, it is necessary to research astronomy in more detail to generate a more consistent essay.

In science fiction films, it is common to portray stars as white, illuminated and stretched lines, demonstrating speed, but this is an unfounded reasoning, since light has no color and stars do not move at that speed.

Therefore, a trip at the speed of light would be common, the only difference would be the reduction of time when arriving at the places, as for example, according to research, a trip from Earth to Pluto at the speed of light would take about five and a half hours.

It would also not be possible to see the stars as in the movies, as their photons are not visible.

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When a light wave moves from air to water, two quantities that change are the wave's speed and direction.

The change in these quantities is due to the change in the refractive index of the medium.

Speed:

The speed of light in a medium depends on the refractive index of that medium. When light passes from air to water, the refractive index of water is higher than that of air.

As a result, the speed of light decreases as it enters the denser medium of water. This decrease in speed is described by Snell's law, which relates the angle of incidence and refraction of light at the interface between two media.

Direction:

The direction of the light wave also changes as it moves from air to water. This change in direction is known as refraction. Refraction occurs because the change in speed of the light wave causes it to bend at the interface between the two media.

The bending of the light wave is governed by Snell's law, which states that the angle of incidence is related to the angle of refraction by the refractive indices of the two media.

In summary, when a light wave moves from air to water, its speed decreases and it changes direction due to the change in the refractive index of water compared to air.

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Answer:

this is because mercury is more dense than iron nail, while water is less dense than the nail.

Explanation:

Answer:

Density

Explanation:

This is because of difference in densities of iron nail, mercury and water. Iron nail is less dense than mercury so it floats on mercury while it is more dense than water so it sinks!

The problem is related to Coulomb's law, which describes the interaction of charges with one another. It is necessary to consider four point charges located at the corners of a square. Each charge has a magnitude of 1 and is positioned a0 nc away from the square, which has sides of length 3.00 om.

The task is to determine the magnitude of the electric field generated by the square of charges if all charges are positive and three are positive, and one is negative. (a) is the charges are positive N/C (b) three of the charges are positive and one is negative Nre (a) ill the charges are positive Nye (b) three of the charges are Dettive aref ene is negative N'C.

Electric field is a vector quantity that is denoted by E. The formula of electric field is E = F / q. The electric field is the force per unit charge acting on a charge placed in the electric field, where F is the force acting on the charge and q is the magnitude of the charge.In the case where all four charges are positive, the magnitude of the electric field generated by the square of charges isE = k * Q / r²The total electric field due to four charges of magnitude q is the vector sum of the individual fields created by each of the charges.E = E1 + E2 + E3 + E4.

We know that the charges at opposite corners of the square have a net electric field of zero because they lie on the same diagonal line. So, we only need to consider the fields created by the two charges along the same diagonal line. Let's say that the charges on this diagonal line are q1 and q2. The distance between them is a, and the distance from each charge to the midpoint of the line is b.

The electric field generated by each of the charges isE = k * q / r²E1 = k * q1 / b²E2 = k * q2 / b²The net electric field at the midpoint of the line isE = E1 - E2 = k * (q1 - q2) / b²The magnitude of the electric field isE = k * (q1 - q2) / b²The distance b is equal to half the length of the diagonal of the square, which isL = √(3² + 3²) = 3√2.

The magnitude of the electric field at the midpoint of the diagonal isE = k * (q1 - q2) / (3√2)²E = k * (q1 - q2) / 18. The electric field at the midpoint of the opposite diagonal is the same magnitude and in the opposite direction. So, the net electric field at the center of the square is zero. So, in this case, the answer is (c) all charges are positive Nye.

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The analysis of the toluene distillate shows that it has a longer retention time and a larger peak area compared to cyclohexane.

To analyze the distillate retention times and peak areas for toluene and cyclohexane, we can compare their respective values. The retention time of toluene is 12.21 minutes, and its peak area is 3.08 cm². In contrast, the retention time of cyclohexane is 5.71 minutes, and its peak area is not provided in the question.

Comparing the retention times and peak areas, we see that toluene has a longer retention time and a larger peak area than cyclohexane. The difference in retention times may be due to their varying chemical properties, affecting their interaction with the chromatography column.

In conclusion, the analysis of the toluene distillate shows that it has a longer retention time and a larger peak area compared to cyclohexane. This information can be useful in the separation and identification of these two compounds in a mixture.

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