If the charge of each two particles is doubled and the seperation between them is also doubled. the force between the two particles is?​

The ball's kinetic energy increases by equal amounts in equal time intervals, not by equal amounts in equal distances.

The ball's kinetic energy increases by equal amounts in equal time intervals. As the ball falls freely, it is affected by gravity, which causes it to accelerate at a constant rate (9.81 m/s²). Due to this acceleration, the ball gains velocity, and therefore, kinetic energy.

Kinetic energy (KE) is given by the equation:

KE = 0.5 * m * v²

Where m is the mass of the ball and v is its velocity. Since the ball is accelerating constantly due to gravity, its velocity increases linearly with time. The increase in velocity leads to a quadratic increase in kinetic energy with respect to time. Therefore, the kinetic energy increases by equal amounts in equal time intervals.

However, the kinetic energy does not increase by equal amounts in equal distances. As the ball falls, its velocity increases, causing the distance it travels in each time interval to also increase. Since the kinetic energy is dependent on the velocity squared, the increases in kinetic energy for equal distances will not be the same.

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Evaluate skill performance against a scale is known as Rubrics; option D

Performance evaluation is the systematic process of assessing the performance of an individual in a certain task, skill or job.

Performance evaluation is done against a set of standard measurements or a rating scale known as Rubrics.

Rubrics use a set of specific criteria to evaluate an individual student or a group of students performance in a certain task assigned to them.

Rubrics use  a rating system where points or scores are awarded depending on the skillset level or ability demonstrated.

In conclusion, rubrics are used to evaluate performance.

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Answer:

= 201.53 meters

Explanation:

A car started from rest and accelerated at 9.54 m/s^2 for 6.5 seconds. How much distance was covered by the car?

Use the formula  d = \(\frac{at^{2} }{2} ,\)

where d is the distance, t is the time and "a" is the acceleration.
\(d=\frac{9*54*6*5^{2} }{2} = 201.53 m\)

The fraction of the volume of the board below the surface of the water is 0.35. Option A is correct.

To determine the fraction of the volume of the board below the surface of the water, we can compare the densities of the board and the water.

The board has a density of 350 kg/m³, and the water has a density of 1000 kg/m³.

When an object floats in a fluid, it displaces an amount of fluid equal to its own weight. For the board to float, the weight of the water displaced by the submerged portion of the board must be equal to the weight of the board itself.

Let's calculate the weight of the board first;

Weight of the board = Volume of the board × Density of the board

The volume of the board is calculated by multiplying its dimensions:

Volume of the board = Length × Width × Thickness

Given;

Length = 3.00 m

Width = 20.0 cm = 0.20 m

Thickness = 5.00 cm = 0.05 m

Density of the board = 350 kg/m³

Volume of the board = 3.00 m × 0.20 m × 0.05 m = 0.03 m³

Weight of the board = 0.03 m³ × 350 kg/m³ = 10.5 kg

To find the fraction of the volume below the surface of the water, we need to determine the volume of water displaced by the submerged portion of the board. This volume can be calculated using Archimedes' principle:

Volume of water displaced = Weight of the board / Density of water

Given;

Density of water = 1000 kg/m³

Volume of water displaced = 10.5 kg / 1000 kg/m³ = 0.0105 m³

Finally, the fraction of the volume of the board below the surface of the water can be calculated as;

Fraction = Volume of water displaced / Volume of the board

Fraction = 0.0105 m³ / 0.03 m³ = 0.35

Therefore, the fraction of the volume of the board below the surface of the water is 0.35.

Hence, A. is the correct option.

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Answer:

True

Explanation:

We have that the statement is

True

Kinesiology

Kinesiology  is the study of human movement,and functions by inducing other sciences of like exercise psychology , exercise sociology and other science that studies human movement and performance

Therefore

The Statement is True

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The minimum power requirement to produce 10 liters/s of fresh water from seawater using RO membranes is 28.3 kW. Option A is the correct answer.

The minimum power requirement to produce 10 liters/s of fresh water from seawater using RO membranes can be calculated using the formula given below:

P = d × g × h × V

Where P = Power in Watts,

d = Density in kg/m³,

g = Gravitational acceleration in m/s²,

h = Head in meters,

and V = Volume flow rate in m³/s.

It is given that the osmotic pressure is 28 atm = 28 × 101325 Pa = 2.83 × 10⁶ Pa.

The volume flow rate required is 10 L/s = 0.01 m³/s.

The density of seawater is approximately 1025 kg/m³.

The gravitational acceleration is 9.81 m/s².

Substituting the given values in the formula, we get:

P = 1025 kg/m³ × 9.81 m/s² × 2.83 × 10⁶ Pa × 0.01 m³/s= 28.3 kW

Therefore, the minimum power requirement to produce 10 liters/s of fresh water from seawater using RO membranes is 28.3 kW.

Option A is the correct answer.

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Yes, it possible to code the impact force using an accelerometer.

Accelerometers can be used to measure vibration on cars, machines, buildings, process control systems and safety installations

An accelerometer is a device that measures the vibration, or acceleration of motion of a structure.

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If the child's center of gravity is 3.57 m below the pivot, it would take approximately 3.791 seconds for the child to complete one swing.

The time it takes for a child on a swing to complete one swing depends on several factors, including the length of the swing's arm, the angle at which the swing is released, and the force exerted by the child to keep swinging. However, if we assume a simple idealized case, we can use a formula to estimate the time period of a pendulum.

The formula for the time period of a simple pendulum (which can be approximated to a swing) is:

T = 2π√(L/g)

Where:

T = Time period (in seconds)

π ≈ 3.14159 (pi)

L = Length of the pendulum arm (from pivot to center of gravity)

g = Acceleration due to gravity (approximately 9.8 m/s²)

In this case, you mentioned that the child's center of gravity is 3.57 m below the pivot. Assuming this refers to the length of the pendulum arm (L), we can use this value in the formula. Therefore:

L = 3.57 m

g = 9.8 m/s²

Plugging in these values, we can calculate the time period:

T = 2π√(3.57/9.8)

T = 2π√(0.364)

T = 2π * 0.603

T = 3.791 seconds

Therefore, if the child's center of gravity is 3.57 m below the pivot, it would take approximately 3.791 seconds for the child to complete one swing.

The question is '' How long does it take a child on a swing to complete one swing if her center of gravity is 3.57 m below the pivot''.

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created when sound is formed from vibrations that cause pressure changes in the surrounding air. it is called a sound wave

Sound is a mechanical wave that results from the back-and-forth vibrations of the particles of the air medium through which the sound wave is moving.

These vibrations in the air are caused by the vibration of the objects that generate the sound. If a sound wave is moving from left to right through the air, then particles of air will be displaced both rightward and leftward as the energy of the sound wave passes through it.

The motion of the particles is parallel to the direction of the energy transport. This is what characterizes sound waves in air as longitudinal waves.

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The ball is dropped from rest from a height of 2h, it will reach a speed of v multiplied by sqrt(2) just before impact with the ground.

Given,The ball that is dropped from rest from a height 'h' reaches a speed 'v' just before impact with the ground. If the ball is dropped from rest from a height of 2h, instead, it will reach a speed of v multiplied by _______ just before impact with the ground.To find the missing value, we need to find the relation between h and v.As per the law of conservation of energy, the total energy remains conserved.

So, the potential energy of the ball at the initial point will be equal to the kinetic energy of the ball just before impact with the ground.Using the principle of conservation of energy, we can say that: Initial Potential Energy = Final Kinetic EnergyInitial potential energy of the ball = mgh1.

Final Kinetic energy of the ball = 1/2 m v1²where,m = mass of the ballh1 = height from which the ball is droppedv1 = velocity of the ball just before impact with the ground. When the ball is dropped from a height of 2h, thenInitial potential energy of the ball = mgh2

Final Kinetic energy of the ball = 1/2 m v2²where,h2 = 2hAs per the law of conservation of energy,Initial Potential Energy = Final Kinetic Energymgh2 = 1/2 m v2²v2 = sqrt(2gh2)......(i)

Also, when the ball is dropped from a height of h, then. Initial potential energy of the ball = mgh

Final Kinetic energy of the ball = 1/2 m v3²where,h = hSo, v3 = sqrt(2gh)........(ii)From equation (i),v2 = sqrt(2gh2) = sqrt(2g * 2h)v2 = sqrt(4gh).........(iii)Dividing equation (iii) by equation (ii), we get:v2/v3 = sqrt(4gh)/sqrt(2gh) = sqrt(2)

Hence, the ball is dropped from rest from a height of 2h, it will reach a speed of v multiplied by sqrt(2) just before impact with the ground.

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Answer:

0.675

Explanation:

hope you get it right

Answer:

\(0.675\:\mathrm{s}\)

Explanation:

Displacement can be given as \(\Delta x=v_x\cdot t\)

Substituting given values, we have:

\(27=40t,\\t=\frac{27}{40}=\boxed{0.675\:\mathrm{s}}\)

Sediment production occurs primarily in the upper part of a river system.

In this region, the river has a higher gradient and more energy, which leads to increased erosion and weathering of the surrounding landscape. As the river flows, it picks up sediments such as sand and clay from the eroded materials. These sediments can come from various sources, including rocks, soils, and organic matter.

The process of sediment production is influenced by factors such as precipitation, vegetation, and land use. For example, heavy rainfall can result in increased erosion, while vegetation can help stabilize soil and reduce sediment production. Additionally, human activities such as agriculture, construction, and deforestation can alter the landscape and contribute to increased sedimentation in river systems.

As the river moves downstream, its gradient decreases, and it loses energy, causing the sediments to be deposited. Understanding sediment production and transport in river systems is essential for managing water resources, predicting flood risks, and conserving aquatic habitats.

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The electric field inside the dome of a highly-charged van de graaff generator is ZERO.

Van de Graaff generators are electrostatic generators and partial accelerators that store direct current on a hollow sphere by creating a strong electric field. With a potential difference of up to 5 megavolts, it is a partial accelerator.

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A

Mercury has the least substantial atmosphere among the given planets.

Mercury, the closest planet to the Sun, has a very thin and tenuous atmosphere. Its atmosphere consists mainly of atoms and molecules that have been blasted off its surface by the solar wind, rather than being generated from internal processes like on Earth. The atmosphere on Mercury is extremely sparse, with a surface pressure about 1 trillion times lower than Earth's atmospheric pressure.

Due to its weak gravitational pull, Mercury is unable to retain a significant atmosphere compared to other planets in the list.Among the given options, Mercury has the least substantial atmosphere

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Answer: 11

Explanation:

Answer:

sample answer I've used books from the library. I've used the Internet as well. I've also used knowledgeable teachers.

Explanation:

Answer:

Reading informational books and researching the topic about what you want knowledge in.

Answer:

Hello!

I do not have all ten listed out, however I can show you how to find out. First things first understand what the numbers mean on the table of elements. The number at the top is the atomic number. This represents how many protons an element has. This is also how many neutrons it has, because there is always the same number of protons and neutrons. The number at the bottom is the atomic mass. This is how much the atom weighs. To find the first 10 look for the elements with atomic numbers 1-10. It should be easy. I’ll give you the first one for example.

Hydrogen is the element with a atomic number of 1. Its atoms contain

-1 proton

- 1 neutron

-1 electron (also note the amount of electrons is equal to the amount of protons and neutrons)

Hydrogens atomic mass is (1.00784 u)

Lastly the symbol for hydrogen is (H)

Hope this helps!!!

The time for the current iteration is up and one of the features isn't complete. Stop Working And Add The Incomplete Feature Back Into The Backlog.

In case a task couldn't be completed within the new launch, it's far great to feature it in the backlog so that in the next iterations it'll probably be finished giving it a priority, of direction. The current iteration, it isn't convenient to extend the new release time simply to complete the unfinished challenge. additionally, we ought to now not add it at once to the following new launch due to the fact we would be changing its shape. So the maximum appropriate thing to do is to depart it marked as a problem to be blanketed within the next iterations.

The movement or a system of iterating or repeating includes A technique wherein repetition of a series of operations yields consequences successively towards the desired end result.

The community becomes skilled by way of processing the current iteration of the entire training set. the lighting turned into also the issue of a computer simulation look at, with 5 iterations undertaken earlier than the final configuration of rooflight was determined.

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Answer:

Microwaves are widely used in modern technology, for example in point-to-point communication links, wireless networks, microwave radio relay networks, radar, satellite and spacecraft communication, medical diathermy and cancer treatment, remote sensing, radio astronomy, particle accelerators, spectroscopy, industria.

Explanation:

Answer:

Kangaroo should be the answer.

Answer:

Kangaroo So there's your answer

Explanation:

Their numbers became so large that they destroyed crops and land, leading to soil erosion. They also negatively affected agriculture and plants by overgrazing. Not only did the rabbits wreak havoc on Australian croplands, but they also contributed to the decline of native plant and animal species.

The answer is 82.32N

The difference in the tension between the lowest and highest points on the circle is solved here below.

Answer:

2.5m/s²

Explanation:

Given parameters:

Mass of car  = 200kg

Force on car  = 500N

Unknown:

Acceleration of the car  = ?

Solution:

According to Newton's second law of motion:

      Force  = mass x acceleration

Insert the given parameters and find the acceleration;

         500  = 200 x acceleration

           acceleration = 2.5m/s²

Explanation:

F = ma

500N = 200 × a

200a. = 500N

a. =. 2.5m/s²

PLEASE GIVE BRAINLIEST.

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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To provide an output of 40 W, approximately 134 solar cell modules would be necessary.

To determine the size of the solar cell array necessary to provide an output of 40 W, we need to calculate the total power generated by a single solar cell module and then divide 40 W by that power.

In this case:

Voltage (V) = 3 V

Current (I) = 0.1 A

Dimensions: Length (L) = 5.0 cm and Width (W) = 8.0 cm

First, let's calculate the power generated by a single solar cell module using the formula:

Power (P) = Voltage (V) * Current (I)

P = 3 V * 0.1 A

P = 0.3 W

So, a single solar cell module generates 0.3 W of power.

Now, we can determine the number of modules required to provide 40 W of power by dividing the desired output power by the power of a single module:

Number of modules = Desired power / Power per module

Number of modules = 40 W / 0.3 W

Number of modules ≈ 133.33

Since we cannot have a fraction of a module, we would need to round up to the nearest whole number.

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Answer:

It's B C D E are maintaining a constant velocity

Answer:

125

Explanation:

use the formula e=1/2mv² and use m=10 and v=5

this produces the equation e=1/2x10x25=125

dont forget the units (J) ;)

Answer:

125J

Explanation:

K.e=1/2mv^2

=1/2(10)(5)^2

=125J

The new time it takes for a wave pulse to travel between the ends of the spring is 2.0 s.

The question has to do with period of a stretched spring.

The frequency of a stretched spring is given by f = 1/2L√(T/μ) where

We then find the period

The period of a stretched spring T = 1/f

T = 2L√(μ/T)

We know that the time it takes the wave pulse to travel is the period, T = 1/f

So, T = 2L√(μ/T)

Since T and μ are constant, we have that

T ∝ L

So, T₂/T₁ = L₂/L₁ where

Making T₂ subject of the formula, we have

T₂ = (L₂/L₁)T₁

Substituting the values of the variables into the equation, we have

T₂ = (L₂/L₁)T₁

T₂ = (20 m/10 m)1.0 s

T₂ = (2)1.0 s

T₂ = 2.0 s

So, the new time it takes for a wave pulse to travel between the ends of the spring is 2.0 s.

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