BRAINLIEST OF CORRECT
Match the atom to the number of electrons it is likely to gain/lose,​

Answer:

Scientific theories attempt to explain how events occur in the natural world.

Answer:

The answer is option  A. Scientific theories attempt to explain an entire group of related phenomena.

Explanation:

I got it right on the test

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Based on the length of a football field and the timeline of earth's history, the first 10 yards represents 460 million years.

Beginning from 460 million years ago, there was massive explosion and expansion of life on earth.

A timeline of earth's history shows the events that occurred from the beginning when earth was formed 4.6 billion years ago until today.

In this activity, a football field is used to represent the timeline of earth's history.

Each end of the football field represents the two end zones, Earth's beginning and TODAY end zone.

Thus, the first 10 yards equals = 46,000,000 × 10 The The first 10 yards = 460,000,000 years.

From the TODAY end zone, the the first 10 yards = 460,000,000 years.

460,000,000 years ago marked the time from the appearance of the first plants until humans and all life on earth as it is today.

This, meant that within this period, there was massive explosion and expansion of life on earth.

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Communication is the act of conveying information from one person to another. .'Good communication makes it difficult to express wants and needs.'These statement is not true about good communication.

Communication is the act of conveying information from one location, person, or organization to another. There is a sender, a message, and a recipient for every message.

Communication, while it may appear to be a simple notion, is actually a very complex topic. The message's path from sender to the destination might be influenced by a multitude of circumstances.

Hence the option 'A' is right. 'Good communication makes it difficult to express wants and needs this statement is not true about good communication.

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the answer is A

Explanation : took the quiz on edge 2020

Answer:

In order to minimize the potential energy, they repel each other (in the case of a positive and negative charge, potential energy is minimized by bringing them together, so they attract).

Explanation:

Hope it helps

Two electrons repel when they interact, because they both have similar negative electric charge.

When the two charges or the charged bodies interact each other, the force of attraction or repulsion acts between them. This force of attraction or repulsion can be find out using the coulombs law.

According to the Coulombs law, the force of attraction of repulsion between charged two bodies is directly proportional to the product of charges of them and inversely proportional to the square of distance between them. It can be given as,

[tex]F=k\dfrac{q_1q_2}{r^2}[/tex]

Here, (k) is the coulombs constant,  (q1 and q2) is the charges of two bodies and (r) is the distance between the two charges.

This force of attraction or repulsion is identified by the sign of the particular charge. According to the property of interacting charges-

As the electrons are negatively charges. Therefore, two electrons repel when they interact, because they both have similar negative electric charge.

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Answer:

i think it A sorry if i get it wrong but it should be A

Explanation:

Answer:

I guess answer is 10m/s.

Explanation:

Kinetic Energy=1/2 mv^2

or,2000J=1/2×10kg×v^2

or2000J=5kg.v^2

or,2000J/5kg=v^2

or,100J/kg=v^2

or,v=10m/s

We need to verify the thrid equation of kinematics here

[tex]\\ \tt\longmapsto v^2-u^2=2as[/tex]

[tex]\\ \tt\longmapsto 20^2=2(-8)s[/tex]

[tex]\\ \tt\longmapsto 400=-16s[/tex]

[tex]\\ \tt\longmapsto s=|400/-16|[/tex]

[tex]\\ \tt\longmapsto s=25m[/tex]

The squirrel has a good luck ,Car gets stopped just 1m away from the squirrel .

Explanation:

According to the Question

A squirrel runs out in front of a car moving at +20m/s ( initial speed u) . The driver slams on the brakes and begins decreasing at -8m/s² ( here the acceleration is acting in opposite directions of motion a )

When Squirrel was 26 metres ( Distance from the car initially )

Using Kinematic Equation

On substituting the value we obtain

➥ 0² = 20² + 2 × -8 × s

➥ 0 = 400 - 16 × s

➥ -400 = -16 × s

➥ 400/16 = s

➥ 25 = s

So, the squirrel is 25 metres from the car .

Explanation:

i will use chainsaw to cut a tree and even if that doesn't work I will use axe to make my work easy.

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Answer:

True

Explanation:

The energy carried by a wave is proportional to its amplitude squared. The larger the strength of the electric and magnetic fields, the more work they can do and the greater the energy the electromagnetic wave carries. A wave's energy is proportional to its amplitude squared (E2 or B2).

Answer:

A

Explanation:

Answer:

According to Pascals law, THE PRESSURE EXERTED TO A CONFINED LIQUID IS TRANSMITTED EQUALLY AND UNDIMINISHED IN ALL DIRECTIONS THROUGHOUT THE MASS OF THE LIQUID--Blaise Pascal

so the pressure at A2 must be equal to A1

buy however the F1 will be less than F2 since:

P1=F1/A1 and P2=F2/F1

P1=P2 according to Pascal

so, F1/A1=F2/A2

with less amount of force at P1 THE force gets multiplied.

Therefore it's obvious that option A and B is wrong. I can't see option C properly.

but, you are going to have this option.

C.F1>F2

so the option with F1>F2 is correct

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Answer:

4.26 m/s

Explanation:

h = 0.925

v = 0

u = ?

v = u^2 - 2gh

0 = u^2 - 2gh

u = sqrt 2gh

= sqrt 2*9.8*0.925

= 4.258

= 4.26

Difference in height = 10 - 5 = 5 meters

Kinetic energy = Energy ( 500 N) x height (5 m) = 2,500 N/m  = 2,500 joules

Answer: 2,500 joules

Answer:

B) 4 m/s²

Explanation:

[tex] \boxed{ \sf{ F= m \times a}}[/tex]

Here,

Substituting the respective values for F and m:

==> 220 = 55 × a

==> 220 = 55 × a

dividing the equation by 55:

==> 4 = a

Therefore, an object of 55 kg when pulled across a frictionless surface by a force of 220 N accelerates at 4 (m/s)/s

Answer:

Depends

Explanation:

If you understand the content rush through questions. If you dont understand learn the key concepts of all the chapters then on the commute tomorrow test your self on the concepts. Good luck!

Answer:

Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire. ... Magnetic Field Generated by Current: (a) Compasses placed near a long straight current-carrying wire indicate that field lines form circular loops centered on the wire.

Explanation:

[tex]\large \bf\gray\dagger\pink{\frak{Solution}\curvearrowright}[/tex]

The feild never generates magnetic field on it's on. It simulataniously because when the flow of current stops , it loses it's magnetism and then there will no magnetism thus no magnetic feild.

Answer:

A unit of pressure equal to the air pressure at sea levels is called 1atm. • 1atm = 760mmHg at 0°Celsius under the standard gravitational force or you can say standard gravity. • 1atm is also equal to 14.7 pounds per sq. Inch ( 1.01325 × 105 pascals )

Explanation:

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Answer:

b. migration

A migration can be defined as the changes that occur in the behavior, structure, physiology of the organism so as to allow it to survive in unfavorable environmental conditions. Behavioral adaptation can be defined as the changes that occur in an organism's behavior which affects it's actions and helps it to survive like choice of mating partner, calling the mates for copulation and migration to different location all are the examples of the behavioral adaptations

Explanation: Behavioral adaptations are the things organisms do to survive. For example, bird calls and migration are behavioral adaptations. Adaptations are the result of evolution. Evolution is a change in a species over long periods of time.

The uncertainty in the position of the proton is 1.1 x 10⁻¹³ m.

The velocity of the proton is calculated as follows;

[tex]v = \frac{1}{10} \times 3\times 10^8 \ m/s = 3 \times 10^7 \ m/s[/tex]

precision of the velocity, Δv = 0.01 x 3 x 10⁷ = 3 x 10⁵ m/s

The uncertainty in the position of the proton is calculated as follows;

[tex]\Delta xm\Delta v= \frac{h}{4\pi} \\\\\Delta x = \frac{h}{4\pi m\Delta v} \\\\\Delta x = \frac{6.67 \times 10^{-34} }{4\pi \times 1.67 \times 10^{-27} \times 3\times 10^5} \\\\\Delta x = 1.1 \times 10^{-13} \ m[/tex]

Thus, the uncertainty in the position of the proton is 1.1 x 10⁻¹³ m.

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Answer:

➢when you crank you make kinetic energy and then the kinetic energy makes potential energy.

Explanation:

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The variable that changes is the period of the motion.

The term simple harmonic motion refers to a regular repeating motion. The acceleration of the SHM is always directed towards the center. The spring is an example of a system undergoing simple harmonic motion.

From the description in the question, the variable that changes is the period of the motion.

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Answer:

The Bowling Ball is Denser.

Explanation:

If we consider both balls in terms of mass they are very different.  Size and volume can be the same though.

What makes the mass?  Think of what fills each of the balls.

A Basketball is filled with air, which weighs very little.

Meanwhile, a bowling ball is filled with coverstock, made up of plastic, urethane and resin.  These materials weigh considerably more than air!

The speed of the object falling freely from rest for the given distance is 50.09m/s.

Given the data in the question:

A free fall is simply any motion of a body where gravity is the sole influence.

From the third equation of motion;

[tex]v^2 = u^2 + 2gh[/tex]

Where v is final velocity, u is initial velocity, h is height and g is acceleration due to gravity ( [tex]g = 9.8m/s^2[/tex] ).

To determine the speed of the falling object, we input our values into the expression.

[tex]v^2 = u^2 + 2gh\\\\v^2 = (0)^2 + [ 2 * 9.8m/s^2 * 128m ]\\\\v^2 = 2 * 9.8m/s^2 * 128m\\\\v^2 = 2508.8m^2/s^2\\\\v = \sqrt{2508.8m^2/s^2} \\\\v = 50.09m/s[/tex]

Therefore, the speed of the object falling freely from rest for the given distance is 50.09m/s.

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Answer it will move slower:

Explanation: cause the force that’s opposite of it

La posición vertical del proyectil es:

y = 50 m/s sen37° - 1/2 . 10 m/s² t²; sen37° ≈ 0,6

Omito las unidades:

y = 30 t - 5 t²;

Según el enunciado es y = 25

Luego 25 = 30 t - 5 t²; o bien t² - 6 t + 5 = 0

Es una ecuación de segundo grado en t, que resuelvo directamente:

t = 1 s, t = 5 s

Pasa por primera vez en 1 s (subiendo)

Pasa por segunda vez en 5 s (bajando)

The personality traits extraversion and openness are are categorized as Energy because their mental energy is typically directed action and creativity.

Personality traits refers to characters and attitudes that describes an individual.

Many researchers believe there are five key personality traits:

The personality traits extraversion and openness are are categorized as Energy because their mental energy is typically directed action and creativity.

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[tex]\bold{\huge{\pink{\underline{ Solution }}}}[/tex]

Concept Used :-

Here, we will use the concept of speed, distance and time

We have given two conditions here

We know that,

[tex]\bold{\pink{ Speed = }}{\bold{\pink{\dfrac{ Distance }{Time}}}}[/tex]

Subsitute the required values in the above formula :-

[tex]\sf{1.4 = }{\sf{\dfrac{ 500 }{t}}}[/tex]

[tex]\sf{ t = }{\sf{\dfrac{ 500 }{1 .4}}}[/tex]

[tex]\sf{ t = }{\sf{\dfrac{ 500 }{1.4}}}[/tex]

[tex]\bold{\boxed{\red{ t = 357.14 \:sec }}}[/tex]

Hence, Time taken by Elena to cover distance of 500 m is 357.14 sec

We know that,

[tex]\bold{\pink{ Speed = }}{\bold{\pink{\dfrac{ Distance }{Time}}}}[/tex]

[ Speed = 1.4 * 60 × 60/1000

Speed = 1.4 × 18/5 = 5.04 km/h }

Subsitute the required values in the above formula :-

[tex]\sf{ 5.04 = }{\sf{\dfrac{ S(Distance)}{2}}}[/tex]

[tex]\sf{ S = 5.04 }{\sf{\times{ 2}}}[/tex]

[tex]\bold{\tt{\boxed{\red{ S = 10.08 km }}}}[/tex]

Hence, The distance covered by Elena in 2 hours is 10.08 km.

Answer: Epidermis tissue.

Explanation: Layer of cells covering surface of entire plant, what it does is Acts as a barrier to fungi and other microorganisms and pathogens. the thin layer because it Allow for light to pass through, thereby allowing for photosynthesis in the tissues below

Answer:

v= 4.8 m/s

Explanation:

m= 2.0

KE= 1/2 mv^2

v= ?

v= 1/2 (2.0)^2

v= 4.8 m/s