Please help will be marked most brainlist !!!

Which of the following is not a true statement?

Answer:

The answer is A: Electron

Because they are loosely bounded and can be easily transferred. The protons are bounded to the nucleus so they cant be transferred.

It cant be an atom or a molecule.

Explanation:

Answer:

Explanation:

w=-ΔU=-HF=-21×7=-147J

my brain.

Explanation:

...................

Answer:The Nokia XR20. ... HMD Global said the Nokia XR20 is the most durable phone it's created to date. The XR20 sports a tough 6.67-inch Gorilla Glass Victus display from American tech firm Corning and can resist damage from scratches and drops from about 6 feet, the company says.Jul 26, 2021

Explanation:

Answer:

0   as 1/7 = 0.142857143

1/7 = 5/35

We can get this number by 1/7 x 1000 = 1000 / 7

= 142.857143

Then move 3 decimal place.

Nine elements that have been known since ancient times, and their discovery dates are not precisely recorded are Gold (Au), Silver (Ag), Copper (Cu),  Iron (Fe), Lead (Pb), Tin (Sn), Mercury (Hg),  Sulphur (S) and Carbon (C).

1. Gold (Au): Gold has been used by humans for thousands of years, with evidence of its use dating back to ancient civilizations like the Egyptians, Sumerians, and Indus Valley people.

2. Silver (Ag): Like gold, silver has a long history of human use and has been mined and utilized for various purposes since ancient times.

3. Copper (Cu): Copper is one of the oldest metals known to humans, and its use dates back over 10,000 years. It was one of the first metals to be smelted and used in tools, weapons, and art.

4. Iron (Fe): Iron is another ancient element that has been used for thousands of years. Early civilizations discovered iron in meteorites and later learned to smelt it from iron ores.

5. Lead (Pb): Lead has been known to humans since ancient times and was used by the ancient Egyptians, Greeks, and Romans. It was widely used in plumbing, as well as for making containers and pigments.

6. Tin (Sn): Tin has been used by humans for thousands of years, mainly in the form of an alloy called bronze (copper-tin alloy), which was crucial for the Bronze Age.

7. Mercury (Hg): Mercury has a long history of use in various cultures for medicinal, alchemical, and decorative purposes.

8. Sulphur (S): Sulfur has been used since ancient times for various purposes, including medicine, bleaching, and as a component in sulfuric acid production.

9. Carbon (C): While the element carbon itself has always existed on Earth, the awareness of its presence and significance as an element is ancient.

These elements were used by ancient civilizations for various purposes such as jewelry, tools, construction, and religious rituals. Their discovery dates are lost in antiquity, as they have been known to humans for thousands of years.

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Answer:

what diagram

Explanation:

Answer:

Fcoso-f =ma. F= ma 15 = 4.5 a then get acceleration. Fcoso- umg = ma then get friction

Answer:

Below

Explanation:

To find the acceleration of the car you can use this formula :

     vf = vi + at OR a = v/t

I'm going to use the first one because it explains the steps more clearly :

vf = 24 m/s

vi = 0 m/s

t = 9.4 s

a = ?

     24m/s = 0 + (a)(9.4s)

     24m/s = a9.4

Divide both sides by 9.4

     a = 2.55319 m/s^2

Round to 3 sig figs

     a = 2.6 m/s^2

Hope this helps! Best of luck <3

Answer:

250N

Explanation:

Coefficient of friction=frictional force/Normal force

0.5= Fr/500N

Fr= 500N×0.5 = 250N

Fr= 250N

We have that the expression for the magnitude of the horizontal force F is

[tex]F=(m_1+m_2)gtan\phi[/tex]

From the question we are told

find an expression for the magnitude of the horizontal force f in the figure for which m1 does not slip either up or down along the wedge. all surfaces are friction-less.

Generally the equation for Normal force   is mathematically given as

[tex]N=\frac{n_2g}{cos\pji}[/tex]

Where

a signifies acceleration

[tex]Nsin\phi=m_2a[/tex]

Therefore

Equating above equations

[tex]a=\frac{Nsin\phi}{m^2}\\\\a=gtan\ph[/tex]i

Generally the equation for Force on wedge   is mathematically given as

[tex]F=m_1a+Nsin\phi[/tex]

[tex]F=(m_1+m_2)gtan\phi[/tex]

Therefore

The expression for the magnitude of the horizontal force F is

[tex]F=(m_1+m_2)gtan\phi[/tex]

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Answer:

constant acceleration

Explanation:

I may be wrong, but I'm almost positive cuz I am also taking physics. ;)

Answer:

Constant acceleration in the positive direction.

Explanation:

Because it is a straight line with a positive slope, we can infer that the rate of acceleration remains constant as the line is linear, and as it states in the question, the slope is positive; therefore, it is moving in a positive direction.

Answer:

twice more but I have to make it 20 characters so h8 how u doing I hear yelling outside my room and exstasional dread in my head

If the mass of the truck is doubled, the force of friction is doubled, and the skidding distance is doubled.

Hence, the correct option is C.

The skidding distance is proportional to the mass of the truck. If the truck is heavily loaded so it has twice the total mass, the skidding distance will be twice as far.

This is because the force of friction is proportional to the normal force, which is in turn proportional to the mass of the truck. The greater the mass of the truck, the greater the force of friction, and the longer the skidding distance.

In equation form, the skidding distance is given by:

s = μ * d / f

where:

s is the skidding distance

μ is the coefficient of friction

d is the distance traveled before the truck stops

f is the force of friction

The force of friction is given by:

f = μ * mg

where:

m is the mass of the truck

g is the acceleration due to gravity

Therefore, If the mass of the truck is doubled, the force of friction is doubled, and the skidding distance is doubled.

Hence, the correct option is C.

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Answer:

The distance traveled is 24 meters but the change in position is 0 meters because the person comes back to the same point.

Explanation:

To be straight it is 24 meters.

Answer:

the free-body diagram shows the vectors for all the forces acting on the body. The resultant vector found by summing all the individual vectors represents the net force. Since F = ma, the acceleration vector will point in the same direction as the net force, with a magnitude of F / m

Explanation:

ewan ko kung tama

Answer:

I think it's B, if that's wrong I apologize. You might want to do more research on it and find the correct answer if you can, if it's right then you could like my comment, so others know if not give it 1 star, keep it low lol.

Explanation:

The line that represents the greatest positive acceleration is A.

In a velocity-time graph, the slope of the line represents the acceleration. The greater the slope, the greater the acceleration. Line A has the steepest slope, so it represents the greatest positive acceleration.

Line B has a positive slope, but it is not as steep as line A. Line C has a negative slope, which means it represents negative acceleration, or deceleration. Line D is a horizontal line, which means it represents a constant velocity, or zero acceleration.

Therefore, the line that represents the greatest positive acceleration is A.

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A situation that involves the transfer of heat by means of convection must involve the exchange of fluid currents such as land and sea breezes.

Heat transfer by convection is a method of heat transfer by which heat is transferred between two bodies through through currents of moving fluids or gases.

The following are examples of heat transfer by convection;

Thus, a situation that involves the transfer of heat by means of convection must involve the exchange of fluid currents such as land and sea breezes.

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Answer: If a velocity time graph is horizontal then the velocity is constant and there is no acceleration.

Velocity describes motion by indicating how fastan object moves and in what direction. Speed is a magnitude of velocity, which indicates only how fast an object moves. Speed shows how much distance is traversed in a given interval of time: In a general case of motion,.

Answer:

i cant even see that no one can i will answer it if u can make it bigger

Explanation: eyes

Answer:

(A)

Explanation:

ITS A ok ok bye

Answer:

d=6km

Explanation:

because multiply 2x3 is six

Answer:

yap

Explanation:

so easy

thanks for free

If I imagine to be a basketball player than I fell too proud on myself...

F = F⁰ - Ff

F = 360 N - 340 N

F = 20 N

F = m × a

20 N = 50 kg × a

a = 20 N / 50 kg

a = 0.4 m/s²

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The acceleration of the box when the frictional force of 340 N is applied to the box will be 0.4 m/s².

In mechanics, acceleration is the measure of how quickly the velocity of an object changes with respect to time. The magnitude of accelerations as a vector. The acceleration of an object depends on the direction of the net force acting on it.

It is a vector quantity because acceleration has both a magnitude and a direction. Additionally, velocity is a vector quantity. The change in the vector of velocity during a period of time divided by the period of time is the definition of acceleration.

According to the question,

F = F⁰ - [tex]F_f[/tex]

F = 360 N - 340 N

F = 20 N

Force = m × a

20 N = 50 × a

a = 20 N / 50 kg

a = 0.4 m/s²

So, the acceleration of the box will be 0.4 m/s².

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Answer:

His speed is 8.333 m/s.

Explanation:

Answer:

Explanation:

a.

b. R3= 1/2R2=6 ôm

R12= R1+R2=20 ôm

Rtđ=R12.R3/R12+R3= 4,62 ôm

c. U= I.Rtđ = 2.4,62=9,23 V

I1=I2= 9,23/20= 0,4615 A

I3= 2-0,4615=1,5385 A

Answer: