a. increased energy

b. decreased attention span

c. improved school attendance

d. improved self-image

decreased attention span

**Answer:**

B.) decreased attention span

**Explanation:**

took the test and got 100%

An object with a charge of 1.2 C is located 4.5 m away from a second object that has a charge of 0.36 C. Find the electrical force that the objects exert on each other. Use 8.988×10 N⋅m2/C2 for the value of Coulomb's constant. Give your answer to two decimal places.

**Answer:**

[tex]1.917*10^8\ N[/tex]

**Explanation:**

Coulomb's law states that the electric force between two charges is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them. It is given by the formula:

[tex]F=k\frac{q_1q_2}{r^2}\\ \\q_1=first\ charge = 1.2C,q_2=second\ charge=0.36C,k=coulomb\ constant=8.988*10^9 N.m^2/C^2, r=distance=4.5m,F=force\\\\F=8.988*10^9*\frac{1.2*0.36}{4.5^2} =1.917*10^8\ N[/tex]

find fk and f in the picture shown

I don’t do that type of stuff

Please help!! The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the average speed of the particle between t = 1.0 s and t = 4.0 s?

The **uniform movement **allows to find the **average speed**, for which the correct answer is:

B) 1.3 m / s

**Kinematics **studies the movement of bodies, establishing relationships between **position, velocity** and **acceleration**. In the special case that the **acceleratio**n is **zero** the motion is called **uniform motion**.

v = [tex]\frac{\Delta x}{\Delta t}[/tex]

Where v is the velocity, Δx is the position variation and Δt is the time variation in the analyzed interval.

In this case

v = [tex]\frac{2.0 - (-2.0)}{4.0\ -1.0}[/tex]

v = 1.33 m / s

In conclusion using the **uniform motion** ratios we can find that the correct answer for the **average velocity** is

B) 1.3 m / s

Learn more about **average speed** here:

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Bob rides his bicycle on a bike path that is 1000 meters long to get his house that is due east of the bike path. If Bob take 150 seconds then...

What is his speed?

What is his velocity?

**Answer:**

6.6 mph is the answer because u had to divide it

why is a 5 rupees coin attracted by a magnet? name the metal present in the coin

Hey Mate

See a coin is attracted bcoz he it has a metal names iron Which is easily attracted by the magnets

Hope, you fell my answer Helpful ( ◜‿◝ )♡

The new metal in the coin is Ferritic Stainless Steel

The (old) metal in the coin is Cupro-Nickel

The (old) metal in the coin is Cupro-Nickel

Which information could a student determine from only the chemical formula of a protein

**Answer:**

**the answer is (D) The number of atoms of each element in the protein**

**Explanation:**

**Answer:**

Which information could a student determine from only the chemical formula of a protein

Which information could a student determine from only the chemical formula of a protein

Which information could a student determine from only the chemical formula of a protein

**Explanation:**

Which information could a student determine from only the chemical formula of a protein

Which information could a student determine from only the chemical formula of a protein

Which information could a student determine from only the chemical formula of a protein

Two objects gravitationally attract with a force of 18.0 N. If the mass of one of these objects is doubled, the new force of attraction is ____ N.

Two objects gravitationally attract with a force of 18.0 N. If the mass of both of these objects is doubled, the new force of attraction is _____ N.

Two objects gravitationally attract with a force of 18.0 N. If the mass of one of these objects is tripled, the new force of attraction is _____ N.

Two objects gravitationally attract with a force of 18.0 N. If the mass of both of these objects is tripled, the new force of attraction is ______ N.

Two objects gravitationally attract with a force of 18.0 N. If the mass of one of these objects is quadrupled, the new force of attraction is ____N.

Two objects gravitationally attract with a force of 18.0 N. If the mass of both of these objects is quadrupled, the new force of attraction is ____N

Sorry man I just started the whole energy mass neutrons and forcething but if you have any tips to help me I would appreciate it a lot

if an object is dropped 14 meters how long will it take for it to hit the ground

Hi! I believe your answer is **6.3 seconds **because it takes 0.45 seconds for an object to fall 1 meter, so just multiply 0.45 by 14 and you'll get 6.3 seconds. I hope this helps you! Good luck and have a great day/night. ❤️✨

if two objects are repelled from each other which force most likely caused this?

A. gravitational

B. weak nuclear

C. electromagnetic

D. strong nuclear

C. electromagnetic

**Answer:**

it's C! electromagnetic

**Explanation:**

Which expression can be used to calculate centripetal acceleration?

**Answer:**

B, 4π^2r/T^2

**Explanation:**

Im on the same quiz, and I'm pretty sure this is the right answer cause I found it on 4 other websites. Good luck

Whats the atmosphere?

**Answer: The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphere.**

**Explanation:**

how is kinetic energy is stored

Answer:

Explanation:

Kinetic energy can be stored. For example, it takes work to lift a weight and place it on a shelf or to compress a spring. ... Kinetic energy can also be transferred from one body to another in a collision, which can be elastic or inelastic. One example of an elastic collision would be one billiard ball striking another.

**Explanation:**

Kinetic energy can be stored. For example, it takes work to lift a weight and place it on a shelf or to compress a spring. ... Kinetic energy can also be transferred from one body to another in a collision, which can be elastic or inelastic. One example of an elastic collision would be one billiard ball striking another.

4. Hijackers are taking over a plane, They tell the pilot to get to Spain as fast as possible. The plane goes from 900

km/hr (beginning speed) to 1140 km/hr (final speed) in just 6 seconds. What is the acceleration of the plane?

The acceleration is about 1457, because of the wind turbines and the way it’s going

Mass refers to the gravitational force on the matter in contact with the surface of a planet. true or false

**Answer:**

False

**Explanation:**

The mass of something does not depend on gravity. A planet has a constant gravitational force. Earth's is 9,80 N/kg. The moon, on the other hand, is 1,6 N/kg. the number of kilograms of something doesn't change if you go from one planet to another and since mass is measured in kilograms, mass doesn't change, therefore it does not refer to gravity. Mass refers to the quantity of matter in an object. It is weight that refers to the gravitational force on an object, since it is measured in newtons, and the amount of newtons per kilogram changes from planet to planet due to different gravity constants

What forces are included on a free-body diagram for a chosen object?

a.all the forces exerted on or by the object.

b.all the forces exerted by the object, but not on it

c. all the forces exerted on the object, but not by it

d. all forces that exist within the neighborhood of the object

**Answer:**

C

**Explanation:**

A free-body diagram shows all the forces exerted or applied on an object.

A **free**-**body **diagram includes all the **forces **exerted on or by the object. Hence, option A is correct.

A **free**-body diagram is a **diagrammatic representation **of a single body or a group of bodies that are **separated **from their surroundings and display all the forces acting on them. A free-body diagram (FBD; sometimes known as a force diagram) is a **graphical representation **used in physics and **engineering **to show the applied forces, moments, and consequent reactions on a body under a specific condition.

It shows a body or group of **connected **bodies along with all the applied forces, times, and **reactions **that the body **experiences**. The body could be **compact **or comprise several interior pieces (like a truss) (such as a beam). To answer difficult problems, a series of free bodies and other diagrams may be required.

Hence, all the forces exerted on or by the object are included in the free-body diagram.

To get more information about **Free Body Diagram **:

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Which is the best estimate for the width of a typical adult hand?

**Answer:**

About 4-5in

**Explanation:**

i really need help please just answer at least one

**Answer:**

9) a = 25 [m/s^2], t = 4 [s]

10) a = 0.0875 [m/s^2], t = 34.3 [s]

11) t = 32 [s]

**Explanation:**

To solve this problem we must use kinematics equations. In this way we have:

9)

a)

[tex]v_{f}^{2} = v_{i}^{2}-(2*a*x)\\[/tex]

where:

Vf = final velocity = 0

Vi = initial velocity = 100 [m/s]

a = acceleration [m/s^2]

x = distance = 200 [m]

**Note: the final speed is zero, as the car stops completely when it stops. The negative sign of the equation means that the car loses speed or slows down as it stops.**

0 = (100)^2 - (2*a*200)

a = 25 [m/s^2]

b)

Now using the following equation:

[tex]v_{f} =v_{i} - (a*t)[/tex]

0 = 100 - (25*t)

t = 4 [s]

10)

a)

To solve this problem we must use kinematics equations. In this way we have:

[tex]v_{f} ^{2} = v_{i} ^{2} + 2*a*(x-x_{o})[/tex]

**Note: The positive sign of the equation means that the car increases his speed.**

5^2 = 2^2 + 2*a*(125 - 5)

25 - 4 = 2*a* (120)

a = 0.0875 [m/s^2]

b)

Now using the following equation:

[tex]v_{f}= v_{i}+a*t\\[/tex]

5 = 2 + 0.0875*t

3 = 0.0875*t

t = 34.3 [s]

11)

To solve this problem we must use kinematics equations. In this way we have:

[tex]v_{f} ^{2} = v_{i} ^{2} + 2*a*(x-x_{o})[/tex]

10^2 = 2^2 + 2*a*(200 - 10)

100 - 4 = 2*a* (190)

a = 0.25 [m/s^2]

Now using the following equation:

[tex]v_{f}= v_{i}+a*t\\[/tex]

10 = 2 + 0.25*t

8 = 0.25*t

t = 32 [s]

– Un automóvil A viaja hacia el este a 80 Km/h, mientras que un segundo automóvil B viaja en la misma carretera a 70 Km/h. Determine la velocidad del automóvil B medida desde el automóvil A si: a) Viajan en sentido contrario acercándose uno al otro. B) Viajan en el mismo sentido.

**Answer:**

la respuesta esta abajo

**Explanation:**

La velocidad de un objeto A relativa a otro objeto B es la velocidad que el objeto A parecería tener para un observador que se mueve con B.

a) La velocidad relativa de dos cuerpos que se mueven en la dirección opuesta es la suma de su velocidad. Por lo tanto:

Velocidad relativa = 80 + 70 = 150 km / h

b) La velocidad relativa de dos cuerpos que se mueven en la misma dirección es la diferencia entre su velocidad. Por lo tanto:

Velocidad relativa = 80 - 70 = 10 km / h

.

Answer in units of N.

There is nothing to answer because there is no question

Which sentence describes Newton's first law?

A. Forces always come in pairs that have the same magnitude.

B. The action force applied by one object to another is opposite in

direction to the reaction force.

C. It takes a larger net force to accelerate an object at a greater rate.

D. Unbalanced forces cause an object to move.

SM

[tex]\Large{\red{\bf{\blue{\dag} Answer:-}}}[/tex]

**Newton's First Law of Motion **:

An object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

Here this statement is best represented by the statement : *Unbalanced forces cause an object to move.** ***[**** ****option**** ****c**** ****]**

**More**** to**** know**** ****:****-**

Newton's 3 laws of motion :-

**Newton's**** ****First**** Law**** of**** Motion**** ****:****-**

It states that an object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

**Ex**** ****-**** ** (i) We tend to fall backwards while standing in the bus , when it starts suddenly.

(ii) We tend to fall forward while standing in the bus , when it stops suddenly.

**Newton's ****Seco****nd**** Law of Motion :-**

It states that the rate of change of momentum is directly proportional to the applied force in the direction of the force . That is ∆p [tex]\propto[/tex] Force .

**Ex**** ****-**** **(i) When we push car & a truck with same force the car will have Greater acceleration due to less mass . (Imaginary case ).

(ii) We feel easy to push a empty cart than a full cart .

**Newton's ****Third**** Law of Motion :-**

It states that every action has equal and opposite reaction .

**Ex**** ****-**** **(i) We are able to walk on ground due to Newton's third law of motion .

(ii) When we push wall it also applies equal and opposite force .

"**Unbalanced **forces cause an **object **to move " is the sentence that describes **Newton's first law.**

A **body **remains in the state of **rest **or uniform **motion **in a **straight **line unless and until an **external **force acts on it.

The **object **is to be rest if the **velocity **and **acceleration **are zero. When an object is in **motion**, **velocity **is **not **equal to **zero **(v ≠ 0) but **acceleration **(a = 0) is equal to **zero**. Therefore, the **object **will continue in motion with **constant **velocity in the **same **direction.

Example:

If we **jump **from a bus while **moving**, our body will be like still moving in the same **direction **of the vehicle. When your feet hit the ground, the **grounds **act on your feet and stop moving. You will fall because the upper part of your body didn't stop and you will **fall **in the **direction **you were moving.

If the **object **have the greater **mass**, then the object will have more **inertia**. Forces can change the **object's **motion.

Hence, **Option D **is the correct answer.

Learn more about **Newton's first law,**

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Please help ASAP WILL GIVE BRAINLIEST

why is it important to use the correct number of significant digits when reporting the results of an experiment

A. So other scientist can see how spread out your data are

B. So other scientists can see how many separate trials you preformed

C. So other scientists can compare their experimental results with yours

D. So other scientistcan see how precise your measurements were

**Answer:**

D

**Explanation: It makes the most sense. Plz mark brainliest**

**Answer:**

D

**Explanation:**

So other scientist can see how precise your measurements are

What is the most effective way to breathe during strength training?

You might be tempted to hold your breath while you're lifting weights. Don't hold your breath. Instead, breathe out as you lift the weight and breathe in as you lower the weight.

List two objects here on Earth that are sources of radiant energy. How can you tell they emit radiant energy?

They glow and feel hot

A dump truck is moving at a constant velocity of 30 m/s.

Which of the following statements accurately describes the truck?

Answer: According to Newton’s 1st law, the truck must be in equilibrium.

Which is a factor that keeps Earth in orbit around the sun

**Answer:**

Gravity

**Explanation:**

Newton contributions

Gravity Is the main factor to keep them together

average velocity of 6 km/h. How many kilometers can she walk in three hours?

**Answer:**

18 km

**Explanation:**

The answer is 18 km an hour

what is the science?

**Answer:**

science is something you learn

**Explanation:**

the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

"the world of science and technology"

**Explanation:**

Science is what we do to find out about the natural world. ... Natural science makes observations and experiments. Science produces accurate facts, scientific laws and theories. 'Science' also refers to the large amount of knowledge that has been found using this process. Research uses the scientific method.

Your friend tells you “I no the moon does not rotate because we always see the same side.” do you agree or disagree with your friend? Write up what you would say to your friend to show why you agree or disagree with them. (THIS IS URGENT I REALLY NEED HELP WITH THIS BECAUSE I DONT KNOW HOW TO EXPLAIN)

**Answer:**

no the moon does not rotate it only goes in circle just like the sun so I disagree with your friend

Two fish swimming in a river have the following equations of motion:

X 1 = - 6.4 m + (- 1.2 m/s) t

X 2 = 1.3 m + (- 2.7 m/s) t

Which fish is moving faster?

**Answer:**

The second fish, X2, is moving faster than the first fish, X1

**Explanation:**

The given parameters for the equation of motion of the fishes are;

X1 = -6.4 m + (-1.2 m/s)×t

X2 = 1.3 m + (-2.7 m/s)×t

The given equation are straight line equations in the slope and intercept form, where the slope is the speed and in m/s and the intercept is the starting point of swimming of the fishes

For the first fish, the intercept = -6.4 m, the slope = the speed = -1.2 m/s

For the second fish, the intercept = 1.3 m, the slope = the speed = -2.7 m/s

Whereby the fishes are swimming in the opposite direction of the measurement of length, we have;

The magnitude of the speed of the second fish [tex]\left | -2.7 \ m/s \right | = 2.7 \ m/s[/tex], is larger than the magnitude of the speed of the first fish [tex]\left | -1.2 \ m/s \right | = 1.2 \ m/s[/tex]

Therefore, the second fish, X2, is moving faster than the first fish, X1.

During a car trip across the state of Ohio you travel 275 miles in 6 hours.

What was your average speed for the entire trip(in mph)?

**Answer:**

45.83MPH

**Explanation:**

Let's use equivalent ratio.

275 miles = 6 hours

6 / 6

45.83 miles = 1 hour

Look at the map. The area labeled A indicates a subduction zone where thePacific Plate is sliding under South America. Which process is likely to occurin this area?DEurasianPlateNorthAmericanPlatePacificCaribbeanPlatePlatePhilippinePlato BCocosPlateRingofFireAIndo-AustralianPlateNazcaPlateSouthAmericanPlateAntarcticPlate
Is this right? I need help pls, I'm failing
Why was Britain geographically lucky when it came to a new source of fuel?
Using the image below identify each structure by matching the diagram label with the name of the organelle.CytoplasmNuclear Pores ChromatinRough Endoplasmic Reticulum Cell MembraneGolgi BodyNuclear EnvelopeCell WallSmooth Endoplasmic Reticulum Nucleus MitochondriaChloroplast Vacuole MicrotubuleNucleolusRibosome1. Structure 12. Structure 23. Structure 3 4. Structure 4 5. Structure 56. Structure 67. Structure 78. Structure 89. Structure 910. Structure 1011. Structure 1112. Structure 1213. Structure 1314. Structure 1415. Structure 1516. Structure 16
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Which macronutrient is the body's preferred source of energy meaning it will break it down and use it first?O vitaminsO fatsO waterO carbohydrates
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Studies of neurophysiology have shown that some cases of memory loss and dementia are caused bywhich become so large that they block regular metabolic activity in nerve cells.
Please help its graded and I just dont want to fail
The nation of Textilia does not allow imports of clothing. In its equilibrium without trade, a T-shirt costs $24, and the equilibrium quantity is 4 million T-shirts. One day, after reading Adam Smith's The Wealth of Nations while on vacation, the president decides to open the Textilian market to international trade. The market price of a T-shirt falls to the world price of $16. The number of T-shirts consumed in Textilia rises to 8 million, while the number of T-shirts produced declines to 2 million.a. Illustrate the situation just described in a graph. Your graph should show all the numbers. b. Calculate the change in consumer surplus, producer surplus, and total surplus that results from opening up trade. (Hint: Recall that the area of a triangle is1/2baseheight
Using the following conversions between the metric and U.S. systems, convert the measurement. Round your answer to the nearest tenth as neededThere are 8 fluid ounces in a cup, 2 cups in a pint, 2 pints in a quart,and 4 quarts in a gallon.1L ~ 0.26 gallons9 fl oz _____ mL
What is the slope of the line that passes through the points (-10,8)and (-15,-7)
What major era in U.S history is referred to in the graphic organizer?A. ColonialB. Civil WarC. RevolutionaryD. Reconstruction
5) Kareem Abdul-Jabbar holds the NBA record for the most points scored in acareer, 38,387. In the first 280games of his career, LeBron James has scored 7446points. At this rate, how many more games willLeBron James need to play tobreak Abdul-Jabbar's career record?
What was NOT one of the reasons formigration west?farmland in New England was runningoutthe concept of manifest destinymany new factories in the Westthe new restrictive wage worker model
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3x+2=7x+6 what is x
A student wants to compare how long a flashlight will continue to shine using different brands of batteries. How can the student make sure that the test is fair?