carbon has six protons. which model shows a neutral atom of carbon?

The reaction force in this case is also 50 N, and it acts in the opposite direction to the action force. They do not cancel each other out because they act on different objects.

According to Newton's third law of motion, for every action, there is an equal and opposite reaction. This means that when the football player hits the ball with a force of 50 N, the ball exerts an equal and opposite force of 50 N on the player. This force is called the reaction force.

The action force is applied by the football player on the ball, while the reaction force is applied by the ball on the football player.

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Answer:

4 N

Explanation:

mass = 2 kg

acceleration = 2 m/s^2

Force = mass * acceleration

         = 2 *2

         = 4 N

If the steel beam is being lowered at steady speed by a crane using a single cable, then there would be three force vectors shown on a free-body diagram. These vectors are:

The weight of the steel beam, which acts downwards towards the Earth. The tension force in the cable, which acts upwards and is equal in magnitude to the weight of the beam. This force is applied by the crane and is transmitted to the beam through the cable. The air resistance force, which acts upwards and opposes the motion of the beam. This force is usually small and can be neglected if the beam is moving at a steady speed. Therefore, to draw a free-body diagram of the steel beam being lowered by a crane using a single cable, three force vectors would be shown: the weight of the beam acting downwards, the tension force in the cable acting upwards, and the air resistance force acting upwards if it is significant.

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Answer:

in the ball

Explanation:

potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.

Answer:

ecdbaf

Explanation:

The logical order of the steps of the scientific method is as follows:

a. analyze the data -- 5

b. test the hypothesis - 4

c. form a hypothesis - 3

d. gather information - 2

e. state the problem - 1

f. draw conclusions - 6

Each experiment and research uses the scientific method to test their hypothesis or solving the problem. The scientific method is a step-by-step process to acquire knowledge about a particular problem. There are the following steps in the scientific method

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Answer:

C. 29.21 m³

Explanation:

Given the following data;

To find the final volume, we would use Boyle's law;

Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.

Mathematically, Boyles law is given by;

PV = K

\( P_{1}V_{1} = P_{2}V_{2} \)

Making V2 the subject of formula, we have;

\( V_{2} = \frac {P_{1}V_{1}}{P_{2}} \)

Substituting the values into the formula, we have;

\( V_{2} = \frac {18.9 * 3.4}{2.2} \)

\( V_{2} = \frac {64.26}{2.2} \)

Final volume, V2 = 29.21 m³

Complete Question:

The Statue of Liberty is made of copper that has turned green because it has undergone a change. What can be said about this change?

Group of answer choices.

A. The change is a physical change because the copper in the statue is still there.

B. The change is a physical change because a new chemical is formed on the outside of the statue.

C. The change is not a physical change because the color of the statue has changed.

D. The change is not a physical change because a new chemical is formed on the outside of the statue.

Answer:

D. The change is not a physical change because a new chemical is formed on the outside of the statue.

Explanation:

A physical change can be defined as a type of change that only affects the physical form of a chemical substance (matter) without having any effect on its chemical properties. Thus, a physical change would only affect the physical appearance and properties of a chemical substance (matter) but not its chemical properties.

This ultimately implies that, a physical change result in a change of matter from one form or phase (liquid, solid or gas) to another without a corresponding change in chemical composition.

Additionally, a physical change is a type of change that involves an increase or decrease in the volume of a physical object (object). Also, this change can be reversed to the original state under certain conditions.

Since the Statue of Liberty which is made of copper turned green, the change is not a physical change because a new chemical is formed on the outside of the statue.

3415.2 grams

Explanation

to solve this we can use a rule of three

Step 1

Let

water= 100-84%= 16%

so,

for the water , 1 mL = 1 gram , so

now, let represents the mass of the aluminiu, so

a) the ratio is the same, so we have a proportion

Step 2

finally, solve for x

so, the mass of the aluminum is

3415.2 grams

Answer:

The maximum force on the wire can be found using the formula:

F = BIL

where F is the force, B is the magnetic field strength, I is the current, and L is the length of the wire.

Rearranging the formula to solve for the current, we get:

I = F / (BL)

Substituting the given values, we get:

I = 0.750 N / (0.0800 T * 4.80 m)

I = 1.95 A

Therefore, the current flowing in the wire is approximately 1.95 amperes.

To determine the direction of the current, we can use the right-hand rule. If the magnetic field is pointed towards the page, we can point our right thumb in the same direction as the magnetic field. Our fingers will then curl in the direction of the current. In this case, the current will be flowing clockwise around the wire.

The current flowing in the wire is 0.3125 A and it flows out of the page.

To determine the current flowing in the wire, we need to use the formula F = BIL, where F is the force,

B is the magnetic field, I is the current, and L is the length of the wire.

Rearranging the formula to solve for I, we get I = F/(BL).

Plugging in the given values, we get I = 0.750 N/(0.0800 T x 4.80 m) = 0.3125 A.

To determine the direction of the current, we use the right-hand rule, where the fingers point in the direction of the magnetic field and the thumb points in the direction of the current.

Since the magnetic field is pointed towards the page, the current flows out of the page.

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Term which is used to  define a complete path for current flow without any kind of break is closed circuit.

A circuit is the pathway of current. Circuits have two ends. A positive terminal and a negative terminal. The electrons are moving from negative terminal to the positive terminal.

The current flow in the opposite direction of electrons thus, from positive terminal to the negative terminal. There are both closed circuits and open circuits.

In an open circuits the current is zero. In a closed circuit, there is a net current flow through the circuit. The circuits can be made open or closed with the devices called switches.

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Answer:

The normal force experienced by the car is approximately 8223.2 N

Explanation:

The question relates to banking of road where the centripetal force for the circular motion of the vehicle is provided by the horizontal component of the normal reaction

The mass of the vehicle that moves around the curve, m = 900 kg

The incline of the curve, θ = 20°

The speed with which the vehicle moves around the curve, v = 12.5 m/s

The radius of the curve, R = 50 meters

We have;

\(N \cdot sin(\theta) = \dfrac{m \cdot v^2}{R}\)

Where;

θ = The angle of inclination of the road = 20°

N = The normal force experienced by the car

m = The mass of the car = 900 kg

v = The velocity with which the car is moving = 12.5 m/s

R = The radius of the curve around which the vehicle moves = 50 m

\(\therefore N = \dfrac{m \cdot v^2}{R \cdot sin(\theta)} = \dfrac{900 \times (12.5)^2}{50 \times sin(20^{\circ})} = 8223.1998754586828969046217875927\)

The normal force experienced by the car = N ≈ 8223.2 N.

Answer:

The formula is CH+H2 it’s stable beacuse the to ions h and c make it stable element compound is ready and compactable

Explanation:

Answer:

the other person answered it correct

Explanation:

We can use a free-body diagram and torque calculations to determine that when one person applies an upward force of 60 N to one end of a uniform wooden board that is 3.00 m long and weighs 160 N, the other person will lift at the opposite end of the board.

We need to first draw a free-body diagram of the wooden board. A free-body diagram is a diagram that shows all the external forces acting on an object. In this case, we have a uniform wooden board that is being carried by two people, and we want to know at what point the other person lifts when one person applies an upward force of 60 N at one end.

The free-body diagram of the wooden board would show the weight of the board acting downwards at its center, which is 80 N (half of 160 N). The upward force of 60 N would be acting at one end of the board. The reaction force from the other person would be acting upwards at some point along the board, and we want to find out where that point is.

To find the point at which the other person lifts, we need to consider the torque acting on the board. Torque is a measure of the twisting force that causes rotation, and it is calculated as the product of the force and the perpendicular distance from the force to the point about which the torque is being calculated. In this case, the point about which the torque is being calculated is the center of the board.

The torque due to the weight of the board is zero, since the weight is acting at the center of the board. The torque due to the upward force of 60 N is 1.5 Nm, since the perpendicular distance from the force to the center of the board is 1.5 m (half of 3.00 m). The torque due to the reaction force from the other person is also 1.5 Nm, since it is also acting at a distance of 1.5 m from the center of the board.

Since the torques due to the upward force and the reaction force are equal, we can conclude that the other person is lifting the board at a point that is exactly opposite to the point where the 60 N force is being applied. In other words, if one person is applying the 60 N force at the left end of the board, the other person is lifting at the right end of the board.

This is because the torques due to the upward force and the reaction force are equal, and the point at which the other person lifts is exactly opposite to the point where the 60 N force is being applied.

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Answer: Distance:400m Distance:0m

Explanation: Distance: 1(lap)x400 which will obviously be 400m

Displacement: from where you started to where’s you ended so if you ran a full lap around a track and came back to where you started you wouldn’t have ran any Miles’s in displacement.

It might help you more to draw a diagram, but I hope I helped!

The bus accelerates at a rate of  \(2.75 m/s^{2} .\) It is moving at a 16.5 m/s starting speed. The bus's ultimate speed will be 41.3 m/s at that point. Thus, choice b is the right answer.

How does acceleration work?

The rate at which an object's velocity changes is known as its acceleration. Similar to speed, acceleration is a scalar quantity, meaning it has a directions and a degree.

Give u and v, respectively, the starting and ultimate velocities. The acceleration and travel time, respectively, are a and t.

then,

v - u/t = a

Hence, v is equal to u plus at.

Assuming that u = 16.5 m/s

t=9 seconds.

a = 2.75 m/s²

2.75 m/s2 for v = 16.5 m/s plus 9 s.

= 41.3 m/s.

In light of this, the bus's actual ultimate speed is 41.3 m/s.

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Answer:

1 KM per minute is the real speed in minutes, turn that into 1000 meters per minute and divided by 60, you get a good number of 16.6666666667 which means you could go 50 meters per 3 seconds

Explanation:

so it would be 16.6666666667 meters per second

Answer:

Water is polar molecule. ... The ionic compounds are dissolved as these ions attract the hydrogen( negative charge attraacts them) and oxygen (positive charge attracts them) whereas methanol is a polar molecule and forms hydrogen bond with water molecules and hence dissolves.

Explanation:

Answer:

945 joules

Explanation:

the formula for kenetic energy is:

0.5 × m × v^2

where m is in (kg) ane (v) is in meter per second.

so we can just use the formula;

0.5 × 2.1 × 30^2

so the answer is 945 joules

Answer:

i. Cyclist A travelled 15 km 1 h cyclist A had started his journey from point X

  Cyclist B travelled 18 km 1 h cyclist A had started his journey from point X

ii. cyclist B overtake cyclist A 6 km from the same starting point X.

Explanation:

From the question,

- Cyclist A and B cycled at an average speed of 15 km/h and 20 km/h respectively.

- Cyclist B started his journey 6 mins after cyclist A had started.

Let the cyclist A time be t.

Then, we can write that

For Cyclist A

Speed = 15 km/h

Time = t mins

For Cyclist B

Speed = 20 km/h

Time = (t - 6) mins

i) To determine the distances travelled by cyclist A and B 1h cyclist A had started his journey,

For Cyclist A

Speed = 15km/h

Time = 1h = 60 mins

From the formula

Speed = Distance / Time

Then,

Distance = Speed × Time

Putting the values into the equation,

Distance = 15km/h × 1h

Distance = 15 km

∴ Cyclist A travelled 15 km 1 h cyclist A had started his journey from point X

For cyclist B

Speed = 20km/h

Time = 1h - 6mins = 60mins - 6mins = 54mins = 54/60 hour = 0.9 h

Also, from

Distance = Speed × Time

Putting the values into the equation

Distance = 20km/h × 0.9h

Distance = 18 km

∴ Cyclist B travelled 18 km 1 h cyclist A had started his journey from point X

ii) To determine the distance cyclist B overtake cyclist A, that is, when the distance covered by cyclist A equals that covered by cyclist B.

First, we will determine the time at which the distances covered by both cyclists were equal.

From

For Cyclist A

Speed = 15 km/h

Time = t hour  

Distance = Speed × Time

Distance = 15t km

For Cyclist B

Speed = 20 km/h

Time = (60t - 6) mins = (t - 0.1) hour

Distance = 20 × (t - 0.1) = (20t - 2) km

Equate the distances

15t = 20t - 2

15t - 20t = -2

-5t = -2

5t = 2

t = 2/5

t = 0.4 hour

Hence, cyclist B overtake cyclist A 0.4 hour after cyclist A had started.

For the distance cyclist B overtake cyclist A,

From

Distance = (20t - 2) km

Distance = (20×0.4 - 2) km

Distance = (8 - 2) km

Distance = 6 km

Hence, cyclist B overtake cyclist A 6km from the same starting point X.

Answer:

Approximately \(7.99\; {\rm m\cdot s^{-1}}\).

(Assuming that \(g = 9.81\; {\rm N \cdot kg^{-1}}\) and that the thickness of the loop is negligible.)

Explanation:

Let \(m\) denote the mass of the hoop, and let \(r\) denote its radius.

Under the assumptions, the moment of inertia of this hoop would be:

\(\displaystyle I = m\, r^{2}\).

Let \(v\) denote the linear velocity of the hoop at the bottom of the hill. The linear kinetic energy of the hoop would be:

\(\displaystyle \frac{1}{2}\, m\, v^{2}\).

Since the hoop is rolling without slipping, its angular velocity would be \(\omega = v / r\). The rotational kinetic energy of the hoop would be:

\(\begin{aligned}\frac{1}{2}\, I\, \omega^{2} &= \frac{1}{2}\, (m\, r^{2})\, \left(\frac{v}{r}\right)^{2} \\ &= \frac{1}{2}\, \frac{m\, r^{2}\, v^{2}}{r^{2}} \\ &= \frac{1}{2}\, m\, v^{2}\end{aligned}\).

The total kinetic energy of the hoop (linear and rotational) would be:

\(\begin{aligned}& \frac{1}{2}\, m\, v^{2} + \frac{1}{2}\, I\, \omega^{2} \\ =\; & \frac{1}{2}\, m\, v^{2} + \frac{1}{2}\, m\, v^{2} \\ =\; & m\, v^{2} \end{aligned}\).

Assuming that total mechanical energy is conserved. Change in the Kinetic energy that the loop has gained would be the opposite of the change in the gravitational potential energy (GPE):

\(\begin{aligned}(\text{change in GPE}) &= m\, g\, \Delta h\end{aligned}\),

Where:

By the conservation of energy:

\((\text{change in KE}) + (\text{change in GPE}) = 0\).

\(m\, v^{2} + m\, g\, \Delta h = 0\).

Solve for \(v\):

\(\begin{aligned}m\, v^{2} &= m\, g\, (-\Delta h)\end{aligned}\).

\(\begin{aligned}v &= \sqrt{g\, (-\Delta h)} \\ &= \sqrt{(9.81)\, (-(-6.50))}\; {\rm m\cdot s^{-1}} \\ &\approx 7.99\; {\rm m\cdot s^{-1}}\end{aligned}\).

In other words, the velocity of the loop would be approximately \(7.99\; {\rm m\cdot s^{-1}}\) at the bottom of the hill.

Answer:

V=  1,160 m

Explanation:

formula:

            V=  V*  T

remplazamos:

V= 116m /s * 10s

V=  1,160 m

Answer:

V=  1,160 m

Explanation:

(a) the energy in joules of an x-ray photon with wavelength 3.30 ✕ 10−10 m is 6.03 x 10^-16 J.

(b) Convert the energy to electron volts = 3.75 keV

(c) If more penetrating x-rays are desired, should the wavelength be increased or decreased?  decreased

(d) Should the frequency be increased or decreased?   increased

(a) The energy in joules of an x-ray photon with wavelength of 3.30 x 10^-10 m can be calculated using the Planck's equation:

Planck's equation is given by:

E = hf

Where, E = Energy of a photon in Joules h = Planck's constant f = Frequency of the electromagnetic radiation λ = Wavelength of the electromagnetic radiation

Since the question provides the wavelength, we need to calculate the frequency of the electromagnetic radiation.

h = 6.626 x 10^-34 Js, and λ = 3.30 x 10^-10 m

Thus, f = c/λ, where c is the speed of light and is given by c = 3.0 x 10^8 m/s.

Therefore, f = 3 x 10^8/3.30 x 10^-10 = 9.09 x 10^17 Hz

Now, we can calculate the energy of the x-ray photon using Planck's equation.

E = hf = 6.626 x 10^-34 J s × 9.09 × 10^17 Hz= 6.03 x 10^-16 J

Therefore, the energy of the x-ray photon is 6.03 x 10^-16 J.

(b) The energy can be converted to electron volts using the equation:

1 eV = 1.602 x 10^-19 J

Thus, 6.03 x 10^-16 J = 6.03 x 10^-16 / (1.602 x 10^-19) eV = 3753 eV ≈ 3.75 keV

Therefore, the energy of the x-ray photon is approximately 3.75 keV.

(c) If more penetrating x-rays are desired, the wavelength should be decreased. This is because the energy of the x-ray photon is inversely proportional to the wavelength. As the wavelength decreases, the energy of the x-ray photon increases. This means that shorter wavelength x-rays are more energetic and can penetrate more deeply into materials.

(d) The frequency should be increased. This is because the energy of the x-ray photon is directly proportional to the frequency. As the frequency increases, the energy of the x-ray photon increases. Therefore, x-rays with higher frequencies are more energetic and can penetrate more deeply into materials.

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Answer:

80

Explanation:

You calculate work by W(j)=Force(n) x distance moved (m)

So 20.0 N x 4.0 m = 80.

:)

The work done when a baker pushes a cart full of rolls with a force of 20.0 N for a distance of 4.0 m is 80 Nm.

The work done by a force can be defined as the product of the displacement of that object and the component of the applied force of the object which is in the same direction as that of displacement. When we push a block with some force 'f' and the body moves with some acceleration, work is done.

W = f × d

where, W = work done,

f = applied force,

d = displacement of the object

W = 20N × 4.0m

W = 80Nm

Therefore, the work done by the baker on that cart is 80 Newton meters.

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Answer:

When you know both the speed and direction of an object's motion, you know the velocity of the object.

When you know both the speed and direction of an object’s motion, you know the magnitude of the speed and direction in which it is moving.

Speed is a rate of change of distance with respect to time. i.e. v =dx÷dt.

Speed can also be defined as distance over time

i.e. speed= distance ÷ time

it is denoted by v and its SI unit is m/s. it is a scalar quantity. i.e. it has only magnitude not direction. ( velocity is a vector quantity, it has both magnitude and direction. when we define velocity, we should know about its direction)

Speed shows how much distance can be traveled in unit time.

As speed is scalar quantity it has nothing to do with the direction. but when magnitude of speed is given and the direction as well, then we can say that a car or body is moving with this much speed at this direction(east, north, west, south).

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Answer:

π/2 radians.

Explanation:

Angular Displacement

It's the angle expressed in radians, degrees, revolutions, etc. through which a point revolves around a point called the center.

To find the angular displacement, we must recall a full revolution, or turn around the center measures 360 degrees, or 2π radians.

The Earth completes a turn every 24 hours. This means that in 6 hours, it has given 6/24 = 1/4 of a turn.

This means that, measured in radians, the angular displacement of a person during 6 hours is:

1/4*2π radians

Simplifying:

π/2 radians.

Given:

The mass on the table is,

The hanging mass is,

THe coefficient of friction is,

let the acceleration of the whole system is a (for the hanging mass it is downward and for the mass on the table it is rightward). the tension towards The fixed point of the pulley is T.

we can write,

Adding these equations we get,

Substituting the values we get,

Hence the acceleration is 6.66 m/s^2.

The statement that best explains why the system looses energy is; the Collison of the molecules of hydrogen with the wall of the can carries off energy to the environment.

We know that energy is defined as the rate of doing work. Now the temperature of a gas is measure of the kinetic energy of the molecules of the body. In this case, the temperature of the hydrogen in the cannister has to do with how fast the molecules of the hydrogen are moving.

The higher the temperature, the faster the molecules of the hydrogen move. The lower the temperature, the slower the molecules of the hydrogen moves.

As such, the molecules collide with the walls of the canister, causing the canister molecules to vibrate and carry energy from the canister to the canister’s surroundings.

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