If the tension in the string is equal to 2 W when the stone is at its lowest point, then the tension when the stone is at the highest point will be

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Answer 1

This question involves the concept of tension, centripetal force, centrifugal force, and weight.

The tension of the stone at the highest point is "0 N".

The centrifugal force always acts away from the circle. The tension always acts toward the support that is the center of the circle in this case. When the stone is at its lowest point, the centrifugal force, and the weight of the stone, both act downward. But the tension is pointing in the upward direction. Hence, the equilibrium equation will be:

[tex]Tension = Weight\ + \ Cenrifugal\ Force\\T = W + F_c\\T = 2\ W\ (given)\\2\ W = W+F_c\\F_c = 2\ W - W\\F_c = W[/tex]

Now, we consider the stone at the top position. Here, the centrifugal force will act in the upward direction (away from the center of the circle), while the weight and tension will be acting in the downward direction. Thus, the equilibrium equation, in this case, will be:

[tex]F_c = W+T\\T=F_c-W\\T = W-W\\[/tex]

T = 0 N

Learn more about tension here:

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The attached picture shows the free body diagram of the stone at different locations.

If The Tension In The String Is Equal To 2 W When The Stone Is At Its Lowest Point, Then The Tension

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A particular car can go from rest to 90 kmh in 10 seconds. What is its
acceleration. (Show your calculation

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Answer:

Im sorry i dont know But thank you for the points

What is the Validity measures of a basketball bouncing

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This study was aimed at testing the construct validity of the basketball basic motion skills test instrument (ITK GDBB). The research used descriptive method of 3 basketball experts in the city of Cimahi; 3 experts are the expert in basketball. The instrument used was the ITB GDBB developed by Silvy (2019) consisting of top passing, bottom passing, top service, bottom service, chest passing, bounding passing, overhead passing, and leading ball (dribbling). This instrument consists of 76 items that cover 4 domains in basketball, namely chest pass, overhead pass, bound pass, and dribbling. The validity method used the construct validity of different power types. For the reliability method, it used the Kuder Ricardson (KR) and Objectivity analysis. The results of the construct validity analysis of a total of 76 items show that the score is ranged from 0.67 to 1.00. The construct validity value of 71 items in the basketball game is in the high category (= 1.00), 5 items are in the sufficient category, the relativity score is ranged from 0.75 to 0.98, and the objectivity score is ranged from 0.89 to 0.95. The conclusion is that this test instrument can be used as a standardized basic motion skill test for standardized large ball games for validity in basic motion skills in basketball games for grade VII junior high school students.

help please this is due in an hour!!!

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[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]

Charge on one electron :

[tex]1.602 \times 10 {}^{ - 19} \: \: coulombs[/tex]

So, charge on ball having 97 electrons is equal to :

[tex]97 \times 1.602 \times 10 {}^{ - 19} [/tex]

[tex]155.394 \times 10 {}^{ - 19} [/tex]

[tex]1.554 \times 10 {}^{ - 17} \: \: coulombs[/tex]

Will mark brainliest help last question

Answers

Answer:

b

the def of convection is : process by which heat is transferred by movement of a heated fluid such as air or water

therefore c and d are wrong.

Explanation:

An engine raises 120kg of water through a height of 40m in 30s.What is the power of the engine take gravity to be = 10m/s.​

Answers

Answer:

  1600 W

Explanation:

Power is the product of force and distance, divided by time.

  P = (120 kg)(10 m/s²)(40 m)/(30 s) = 1600 kg·m²/s³ = 1600 W

Aluminum foil crunched between teeth with gold fillings (which one is negatively charged and which one is positively charged?)

Answers

Answer:

Aluminum foil is negatively charged and gold fillings are positively charged.

Hope this helps :)

While you push a box you begin to decrease the force you are exerting on the box. When will the box reach equilibrium?

A. When the force you are exerting on the box is equal to 0.

B. When Fyou on box = -Fbox on you.

C. When the force of the box becomes Fyou on box < Fbox on you

D. The box will never reach equilibrium.

Answers

The application of a force on the box overcomes the friction and causes the box to accelerate

While the force is decreasing, the box will stabilize;

B. When [tex]\underline{F_{you \, on \, box} = -F_{box \, on \, you}}[/tex]

Reason:

Newton's third Law of Motion states that action and reaction are equal in magnitude and opposite in direction

When the box is pushed with a force, [tex]F_{you \, on \, box}[/tex], the reaction of the box of mass, m,  is as follows;

[tex]F_{you \, on \, box}[/tex] = [tex]F_{friction}[/tex] + m × acceleration

Where;

[tex]F_{friction}[/tex] = [tex]-F_{box}[/tex] for example

The negative sign is due to the direction of the friction force, or [tex]F_{box}[/tex] is opposite to the direction of the applied force

When the force is decreased to F₂ = [tex]F_{you \, on \, box}[/tex], such that we have;

[tex]F_{you \, on \, box}[/tex] = [tex]-F_{box \, on \, you}[/tex] , which is the condition for equilibrium, and the net

force is zero and according to Newton's first law of motion,  the box moves

at constant speed no acceleration

Therefore the box will reach equilibrium when;

[tex]\mathbf{\underline{F_{you \, on \, box} = -F_{box \, on \, you}}}[/tex]

Learn more about equilibrium here;

https://brainly.com/question/16679851

Answer:

When the force you are exerting on the box is equal to 0

Explanation:

Once again expert verifiers are sabotaging people here is the actual answer.

if an object is launched at 40 degrees what other angle will give you the same range

Answers

Answer:

50 degrees

Explanation:

complimentary angles will give you the same range

A baseball pitcher delivers a fast ball. During the throw, the speed of the ball increases from 0 to 30.0 m/s over a time of 0.100 seconds. The acceleration of the baseball is ____ m/s2.

a.
30

b.
3000

c.
300

d.
3

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b is the answer, i hope this helped

How mass and volume of matters are connected to density?
This is a physics question not maths

Answers

Answer:

An object's density is the ratio of mass to volume of an object. The mass is how much it resists acceleration when a force is applied to it and generally means how much of an object or substance there is. Volume describes how much space an object takes up.

Evaluate tan(24°).
ОА. 1.36
В. 0.45
Ос. 0.41
OD. 0.91

Answers

I think OC.0.41 is correct but im not dure plz chech it

Answer:

B. 0.45

Explanation:

You just need to plug this into a calculator.

During a certain period of time, the speedometer of a car reads a constant
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Answers

no it just means that at one point you reached 60 km/h how long you remain there was dependent on how long u kept your foot on the gas

a ball thrown horizontally with the velocity of 20 m\s from a 20 m building​ .what is the time

Answers

Answer:2.02s

Explanation:

At the y component, the tract of the ball is free falling body. The initial velocity at y component is 0 m/s.

Height = 1/2 * g * t^2

20 = 1/2 * 9.8 * t^2

t = (20 * 2 / 9.8)^1/2, t = 2.02s

i commit to uphold the truth by

Answers

Answer:

the truth was committed to upload by me

Explanation:

passive voice

What happens when acetate rubs with wool

Answers

When a Cellulose Acetate rod is rubbed with a woolen duster, friction occurs, rubbing loosely held electrons from the rod onto the duster. So, this time, the rod loses electrons. Since the Acetate rod now has fewer electrons than protons it has become positively charged. Hope this helps!

Answer:

The charge becomes positive.

Explanation:

When rubbed with cellulose acetate the charge of the fur/wool will become negative.

OMG LOOK AT THIS! YOU WON'T BELIEVE IT!!!!!!!!!!!!

what would happen to the weather if half of the human race died off? would it get colder? why?

Answers

it would get healthier considering the stuff we put into the air and weather

And the decaying bodies from the virus you talked about would decompose and go into the soil creating natural fertilizer which means better plans moer air better weather  

A student practicing for a track meet ran 3500 m in 500 s. What was her average speed? a. 4,000 m/s b. 0.14 m/s c. 7 m/s d. 1,750, 000 m/s

Answers

Answer:

c. 7 m/s

Explanation:

3500 m / 500 s = 7 m/s

Which stament describes Newton’s law of universal gravitation

Mass has little effect on gravity between objects

Gravity pushes objects away from earths center

Gravity does not act between earth and the moon

Every object in the universe attracts every other object
I’ll give brainliest

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every object in the universe attracts every other object

Say hi :P...................................................................

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HELLOOOOOOOOOOOOOOOOOOOOO

Which area of astronomy does Kepler's laws address? (1 point)
A. The movement of asteroids in the solar system
B. The movement of the sun in relation to the planets.
C. The movement of planets within the solar system.
D. The movement of stars within galaxies.​

Answers

Answer:

B

Explanation:

His law describes the orbits of planets around the Sun.

The area of astronomy that Kepler's laws address is the movement of planets within the solar system. The correct option is C.

What is Kepler's law?

According to Kepler's first law, "all the planets revolve in elliptical orbits around the sun, with the sun at one of the foci."

Perihelion is the point at which the planet is closest to the sun, and aphelion is the point at which the planet is farthest from the sun.

Kepler's laws of planetary motion, published between 1609 and 1619 by Johannes Kepler, describe the orbits of planets around the Sun.

Kepler's laws of planetary motion represent a watershed moment in the transition from geocentrism to heliocentrism. They establish the first quantitative link between the planets, including Earth.

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Roadrunner speeds up from 2m/s to 10m/s in a distance of 10m. What is his acceleration?

Answers

d = v·t + (1/2)·a·t^2

a = 10m/s^2. t = 10s

v = 0m/s. Initial velocity

d = 0·10 + 10/2 · 10^2 = 0 +5·100

d = 500m

Weight of an object remains same on the Earth and the Moon.
true or false?

Answers

false The moon's gravitation force is determined by the mass and the size of the moon. Hence, the weight of an object on the moon is 1/6th its weight on the earth.
Answer: False

Weight is related to the strength of gravity, meaning, the object doesn’t remain the same on the earth and the moon since it can change.

The Sun's primary energy source is

Answers

Answer:

nuclear fusion

Explanation:

converting hydrogen to helium.

The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom. During the fusion process, radiant energy is released.

please can anybody tell me what is this lab equipment​

Answers

Answer:

hii there

its a test tube holder

Explanation:

hope it helps

A student's computational model of a falling object does not account for air flow. Which of the following statements is true? (1 point)
1. This computational model must be redone because this simplification will increase the amount of computational power needed for this program.
2. This computational model must be redone because computational models should not include simplifications.
3. This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications 4. This computational model is strong because simplifications can make computational models more accurate.​

Answers

Option 3. This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications.

A student's computational model of a falling object does not account for air flow is  " this is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications".

What is computational models?

Using computers to simulate and investigate complicated systems utilizing mathematics, physics, and computer science is known as computational modeling. Numerous variables in a computational model describe the system under study.

In behavioral science, computational modeling aims to employ exact mathematical models to better understand behavioral data. Most frequently, the behavioral data are choices, but they can also be reaction times, eye movements, or other plainly visible behaviors, or even neurological data.

This is a simplification, which will create inaccuracies, but computational models of complex systems often include simplifications.

To learn more about computational models refer to the link:

brainly.com/question/28525506

 

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After turning off the television, you approach it. As you get close, but not touching it, the hairs on your arm start to stand up. This is an excellent example of static charge built up by

Answers

Answer:

electricity duh

Explanation:

Submit a hand-drawn picture by you of the following.
"Humpty Dumpty sat on a wall, Humpty Dumpty had a great fall, and all the king's horses and all the king's
men couldn't put Humpty Dumpty back together again."


Please help, thanks.

Answers

Try to draw Humpty Dumty cracked on the floor with men all around him

40. What is the acceleration of a 10 kg object if a force of 3 N is applied to it?

Answers

Answer :
a =0.3m/s²
Explanation :
a =f/m
a = 3N/10kg
a =0.3 m/s²

when electricity is passed through aqueous solution of Sodium chloride following reaction takes place. Identify the correct combination of given options. (a). This process is called chlor-alkali process. (b). Chlorine gas is given off at the cathode, Hydrogen gas at anode and sodium hydroxide solution near cathode. (c). chlorine gas obtained in this process can be used as disinfectant. (d). Chlorine gas is given off at the anode, hydrogen gas at cathode and Sodium hydroxide solution formed near cathode. (e). sodium hydroxide solution is called brine. (f). The given equation doesn't obey law of conservation of mass. ​

Answers

Answer:

When electricity is passed through an aqueous solution of sodium chloride, it gives hydrogen, chlorine and sodium hydroxide as a product. The balanced chemical equation is, This process is called as Electrolysis of Brin im in hardvard dont cheat and get good grades and become a graduate in hardvard

Explanation:

PLEASE HELP!!
What process is illustrated in the figure?

Answers

Answer: A

Explanation:

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