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Answer:

Vf = 0.68 m/s

Explanation:

First we find acceleration of the marble by using 2nd equation of motion:

s = Vi t + (1/2)at²

where,

s = distance covered = 140 cm = 1.4 m

t = time taken = 4.1 s

Vi = initial Velocity = 0 m/s (since, the marble was initially at rest)

a = acceleration = ?

Therefore,

1.4 m = (0 m/s)(4.1 s) + (1/2)(a)(4.1 s)²

a = (1.4 m)(2)/(4.1 s)²

a = 0.17 m/s²

Now, we use 1st equation of motion for final velocity (Vf)

Vf = Vi + at

Therefore,

Vf = 0 m/s + (0.17 m/s²)(4.1 s)

Vf = 0.68 m/s

The two kinds of data that can be collected during an experiment are qualitative and quantitative data.

Numbers are used to convey quantitative data, which are measurements of values or counts. Numerical variables are the subject of quantitative data.

Qualitative data are represented by a name, symbol, or number code and are measurements of "types." Data concerning categorical variables make up qualitative data.

To provide a complete picture of a population, quantitative and qualitative data are frequently combined since they produce distinct results. For instance, if yearly income statistics are acquired (quantitative), occupation data might also be gathered (qualitative) to learn additional specifics about the average annual income for each type of profession.

Depending on whether the variable of interest is numerical or categorical, it is possible to acquire both quantitative and qualitative data from the same data unit.

Therefore, the two kinds of data that can be collected during an experiment are qualitative and quantitative data.

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Answer:

Explanation:

To find the current flowing in the circuit, we can use Ohm's Law and Kirchhoff's circuit laws.

Ohm's Law states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R):

I = V / R

In this case, the voltage (V) is the electromotive force (EMF) of the current source, which is 14 V. The total resistance (R) in the circuit is the sum of the internal resistance (r) and the resistances of the two resistors (R1 and R2):

R = r + R1 + R2

Given that the internal resistance (r) is 1Ω and each resistor (R1 and R2) has a resistance of 3Ω, we can substitute these values into the equation:

R = 1Ω + 3Ω + 3Ω = 7Ω

Now we can calculate the current (I):

I = V / R = 14 V / 7Ω = 2 A

Therefore, the current flowing in the circuit is 2 Amperes.

The current flowing in the 2Ω and 1Ω is 1.14 A and the current flowing in the 3Ω and 4Ω is 0.286 A.

The value of the current in each resistor is calculated by applying Kirchoff voltage law as follows;

The total voltage in loop 1 is calculated as;

2 + 4 - I₁R₁ - (I₁ - I₂)R₂ - I₁R₃ = 0

6 - 2I₁ - 3(I₁ - I₂) - 1₁ = 0

The current flowing in loop 2 is calculated as;

I = V/R

I₂ = ( 6 V - 4 V ) / (3 + 4)

I₂ = 0.286 A

The value of the current flowing in loop 1 is calculated as;

6 - 2I₁ - 3(I₁ - I₂) - 1₁ = 0

6 - 2I₁ - 3(I₁ - 0.286) - 1₁ = 0

6 - 3I₁ - 3₁ + 0.858 = 0

-6I₁ = -6.858

I₁ = 6.858 / 6

I₁ = 1.14 A

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An axon is a long, tubelike structure extending from a neuron's cell body.

option A is the correct answer.

An axon is a long, tubelike structure extending from a neuron's cell body.

An axon is respnsible for transmitting nerve impulses, or action potentials, away from the cell body to other neurons, muscles, or glands.

Thus, an axon is a long, tubelike structure of a neuron that carries nerve impulses away from the cell body and towards other neurons, muscles, or glands. It is the primary means by which neurons transmit information throughout the nervous system.

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Answer:

Frequency, \(f=2.18\times 10^9\ Hz\)

Explanation:

We have,

Speed of radio waves is \(3\times 10^8\ m/s\)

Wavelength of radio waves is \(\lambda=0.137\ m\)

It is required to find the frequency of the radio waves. The speed of a wave is given by :

\(v=f\lambda\\\\f=\dfrac{v}{\lambda}\\\\f=\dfrac{3\times 10^8}{0.137}\\\\f=2.18\times 10^9\ Hz\)

So, the frequency of the radio wave is \(2.18\times 10^9\ Hz\).

Answer:

10 amps   10 ohms      ( 100 v)

Explanation:

Voltage = current * ohm

  the smallest of those listed is    10 amps   10 ohms

In your business plan, the target market section should clearly identify both your primary and secondary market(s). The market analysis is basically the target market section of your business plan. It is a thorough examination of the ideal people to whom you intend to sell your products or services.

\(\pmb{\boxed{Answer:- }}\)

Light behaves Sometimes as a wave sometime as a particle.

It is called dual nature of light.

It would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

1. The decay rate of a radioactive isotope is proportional to the number of radioactive atoms present in the sample at any given time.

2. The decay rate can be expressed as a function of time using the formula: R(t) = R₀ * \(e^{(-\lambda t\)), where R(t) is the decay rate at time t, R₀ is the initial decay rate, λ is the decay constant, and e is the base of the natural logarithm.

3. The half-life of a radioactive isotope is the time it takes for half of the radioactive atoms in a sample to decay. In this case, the half-life is given as 210 days.

4. Using the half-life, we can find the decay constant (λ) using the formula: λ = ln(2) / T₁/₂, where ln(2) is the natural logarithm of 2 and T₁/₂ is the half-life.

5. Substituting the given half-life into the formula, we have: λ = ln(2) / 210.

6. Now, we need to find the time it takes for the decay rate to fall to 0.58 of its initial rate. Let's call this time "t".

7. Using the formula for the decay rate, we can write: 0.58 * R₀ = R₀ * e^(-λt).

8. Simplifying the equation, we get: 0.58 = \(e^{(-\lambda t\)).

9. Taking the natural logarithm of both sides, we have: ln(0.58) = -λt.

10. Substituting the value of λ from step 5, we get: ln(0.58) = -(ln(2) / 210) * t.

11. Solving for t, we have: t = (ln(0.58) * 210) / ln(2).

12. Evaluating the expression, we find: t ≈ 546.

13. Therefore, it would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

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Explanation:

\(from \: einstein \: equation : \\ E = m {c}^{2} \\ E = 1.5 \times {(3 \times {10}^{8} )}^{2} \\ E = 1.35 \times {10}^{17} \: joules\)

The net electric force on particle 2 is -21.7 N.

The net force on particle q₂ is determined by applying Coulomb's law of electrostatic force.

F = kq₁q₂ / r²

where;

The force  between particle 2 and particle 1 is calculated as;

F = -( 9 x 10⁹ x 8 x 10⁻⁶ x 3.5 x 10⁻⁶ ) / (0.1)²

F = - 25.2 N

The force  between particle 2 and particle 3 is calculated as;

F = ( 9 x 10⁹ x 2.5 x 10⁻⁶ x 3.5 x 10⁻⁶ ) / (0.15)²

F = 3.5 N

The net force on particle 2 = 3.5 N - 25.2 N = -21.7 N

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Mechanical energy changes when a roller coaster starts at a height of 40 meters and reaches a height of 20 meters. The potential energy decreases, while the kinetic energy increases.

When a roller coaster starts at a height of 40 meters and reaches a height of 20 meters, mechanical energy changes. In physics, mechanical energy is the sum of potential and kinetic energy that is present in the objects. When an object is moved, it gains or loses energy, thus the mechanical energy changes. There are two forms of mechanical energy, namely kinetic energy and potential energy. Kinetic energy is the energy that a moving object possesses due to its motion, while potential energy is the energy that an object possesses due to its position or shape.
In the case of a roller coaster, when it starts at a height of 40 meters, it has potential energy that is equal to its mass multiplied by the acceleration due to gravity multiplied by its height. As it moves down the track, the potential energy gets converted into kinetic energy, which is the energy of motion. When the roller coaster reaches a height of 20 meters, it has a lower potential energy compared to when it started. The difference in potential energy is equal to the amount of work done by the force of gravity in bringing the roller coaster down from a height of 40 meters to a height of 20 meters. At the same time, the roller coaster has a higher kinetic energy than when it started, as it gained speed during the descent.
Therefore, in summary, mechanical energy changes when a roller coaster starts at a height of 40 meters and reaches a height of 20 meters. The potential energy decreases, while the kinetic energy increases.

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Answer:

The correct answers are: A, C, D, E

Explanation:

The magnetic field is a solenoid is given by

         B = μ₀  \(\frac{N}{L}\)   I

where N is the number of turns, I the current and L length of the solenoid.

Using this equation let's examine the different responses to permute increasing the magnetic field

A) True. a thicker wire decreases the resistance and the current can increase the system.

B) False. If there is no voltage source there is no current in the system

C) True. the field is proportional to the number of turns

D) True. the magnetic moments of the core align with the field increasing its value

E) True. When the loops are closer together, more of them can fit per unit length

F) False. If the wire is shorter the number of turns decreases.

The correct answers are: A, C, D, E

Hi there!

We can use the following kinematic equation:

\(v_f^2 = v_i^2 + 2ad\)

vf = final velocity (? m/s)
vi = intial velocity (0 m/s)

a = acceleration (5 m/s²)

d = displacement (8 m)

Plug in the givens and solve.

\(v_f^2 = 0 + 2(5)(8)\\\\v_f = \sqrt{80} = \boxed{8.944 \frac{m}{s}}\)

Answer:

120 m/s

Explanation:

- Let "a" denote the acceleration due to the rocket's motion.

- Let x1 denote the distance traveled while the rocket after launching which is the first 9 seconds

- Let x2 denote the distance traveled between the period when the rocket shuts off and when the judges are reached which is the last 3 seconds

- Let v1 denote the velocity of the car just when the rocket shuts off.

- Let v2 denote the final velocity

Total distance from the starting line at which the car passes the judges' box in the center of the grandstand would be x1 + x2

Thus;

x1 + x2 = 990

We are told that the rocket provides a constant acceleration for 9 seconds.

Thus, distance travelled after 9 seconds will be gotten from Newton's equation of motion;

x = ut + ½at²

Initial velocity = 0 m/s and t = 9. Thus;

x1 = ½at² = (1/2)(a)(9²)

x1 = (1/2)(a)(81)

x1 = 40.5a

Likewise, final velocity after 9 seconds will be gotten from;

v = u + at

Thus;

v1 = 0 + a(9)

v1 = (a)(9)

v1 = 9a

We are told that the rocket now slows down at a rate of 5 m/s² which is a Deceleration

Thus, distance during this negative acceleration is;

x2 = v1(t) + (-½at²)

x2 = v1(t) - ½at²

Putting 9a for v1, 5 m/s² for a, 3 for t, we have;

x2 = 9a(3) - (1/2)(5)(3²)

x2 = (9a)(3) - (1/2)(5)(9)

x2 = 27a - 22.5

From earlier, we said x1 + x2 = 990

Thus;

40.5a + 27a - 22.5 = 990

67.5a = 990 + 22.5

67.5a = 1012.5

a = 1012.5/67.5

a = 15 m/s²

From earlier, since v1 = 9a

Then, v1 = 9(15)

v1 = 135 m/s

The cars speed when it passes the judges would be;

v = u + at

Putting 135 for u, -5 m/s²(negative because of Deceleration), and 3 s for t, we have;

v = 135 + (-5 × 3)

v = 135 - 15

v = 120 m/s

Answer:

In explanation

Explanation:

Toughest animal existing now would be like a bear more specifically a grizzly bear. I say this because when your near this animals and your messing with it or it's cubs your more than likely dead you climb up a tree,did you forget they can climb to,when running a grizzly bear can get up to a max speed of 35 MPH, Now the grizzly bear isn't the most aggressive but is still one of the rulers of bears along with it's relative the polar bear,but when you are talking about pain they can't take pain shoot them it takes more than 1 show better have a machine gun or be able to run fast a knife isn't going to do a lot in less you get it in it's eye. Now for a grizzly bear you can play dead and he will fall for it or she but all you need to know is don't mess with it.

Another one of the toughest animal is a komodo dragon.

When were talking about a komodo dragon there like a human they way up to 170 LBS to 200 LBS they have a length of 8 foot and a half. Now komodo dragons are very friendly and can be a family pet but if that thing bites you,you will be dead within hours in less treated amindentally. The komodo dragon can kill water buffalos, and the komodo dragon has no predators. The komodo dragon is the biggest lizard in the world and is poisonous so that is a reason to not get around with, one time a komodo dragon killed an eight year old boy so not really friendly.

is there anymore things you want my opinion on on actually the real deal.

would you like to know most aggressive,

most dangerous,

most poisonous,

The most feared

the most loving

The biggest animal in the world

The most friendly or other just let me know:)

Hope it helps have a great afternoon:)

Answer:

D - Water

Explanation:

No. The potential of a non-uniform charged sphere cannot be the same as that of a point charge.

The potential at any point in space is determined by the distribution of charge within the system, and a non-uniform charged sphere has a different charge distribution than a point charge.

A point charge has all of its charges concentrated at a single point, while a non-uniform charged sphere has charge distributed throughout its volume.

As a result, the electric field and potential will be different for these two systems, even if they have the same total charge. Therefore, the potential of a non-uniform charged sphere cannot be the same as that of a point charge.

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Answer:

B. For a gas in a closed container at a constant temperature, the product of the pressure and the volume remains constant.

Explanation:

The rest are societal laws, as they are telling you something you should avoid or follow.

Hope this helps :)

Answer:

The original analog sound waves are perfect but the copy is not because most analog waves have wavelengths that are too long to reproduce in copies

The original digital waves and the copy are perfect because with digital waves no information gets lost in the transfer of data, and there is no additional noise added to the copy.

Analog refers to audio recorded using methods that replicate the original sound waves. Digital audio is recorded by taking samples of the original sound wave at a specified rate.

Explanation:

i dont need $5

i wrote this using information from go ogle and some from brai nly. I hope it helps.

The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

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The roller coaster experiences no friction, the speed of the roller

coaster at point F is mathematically given as

v=  65.72 m/s

Generally, the equation for the Mechanical enegy is is mathematically given as

ME = mgh + 1/2mv^2

Therefore

ME= 80*9.8*200 + 1/2*80*20^2

ME= 172800 J

In conclusion, the speed of the roller coaster at point F is

ME=1/2*m*V^2

172800 = 1/2*80*V^2

v=  65.72 m/s

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The net force on the airplane window of area 1800 cm² is 3469.47 Pa.m² .

Given:

Pressure inside the cabin: 0.95 atm

Pressure outside the cabin: 0.76 atm

Area of the airplane window: 1800 cm²

Now to find the net force on the airplane window, we can calculate the pressure difference between the inside and outside of the cabin and to calculate the pressure difference, we subtract the outside pressure from the inside pressure.

Pressure Difference = Pressure inside - Pressure outside

Pressure Difference = 0.95 atm - 0.76 atm

Pressure Difference = 0.19 atm

The area of the airplane window is given as 1800 cm². To simplify calculations in SI unit we convert the area to square meters:

Area in m² = (Area in cm²) / 10,000

Area in m² = 1800 cm² / 10,000

Area in m² = 0.18 m²

As we know,

Net Force = Pressure Difference * Area

Net Force = 0.19 atm * 0.18 m²

Net Force = 0.0342 atm·m²

To convert the net force to pascals (Pa), we use 1 atm = 101325 Pa. Multiplying the net force by 101325 Pa, we get

Net Force = 3469.47 Pa·m²

Therefore, the net force on the airplane window is approximately 3469.47 pascals times square meters (Pa.m²).

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The finished compost can be used to enrich soil for planting and gardening. Mix the compost into the soil or use it as a top dressing around plants.

Substances Used to Fill It:

A mixture of "brown" and "green" organic materials such as leaves, grass clippings, fruit and vegetable scraps, coffee grounds, and shredded paper can be used to fill the bin.

Household Items That Can Go in It:

Most fruit and vegetable scraps, eggshells, tea bags, coffee grounds, yard waste such as grass clippings and leaves, and shredded paper can be added to the compost bin. Meat, dairy, and fatty foods should be avoided.

How Long It Takes Before It Is Ready:

The compost should be ready to use in approximately 6 to 12 months, depending on the environmental conditions and the frequency of turning and mixing the compost.

How You Use the Compost:

The finished compost can be used as a nutrient-rich soil amendment for planting and gardening.

Compost Bin Design:

To add household items to your compost bin, simply add any of the following organic materials to the bin: fruit and vegetable scraps, coffee grounds and filters, tea bags, eggshells, yard waste such as leaves and grass clippings, and shredded paper.

Compost is ready to use in this much time:

The compost should be ready to use in approximately 6 to 12 months, depending on the environmental conditions and the frequency of turning and mixing the compost.

Use your compost this way:

The finished compost can be used to enrich soil for planting and gardening. Mix the compost into the soil or use it as a top dressing around plants.

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Answer:

By definition the acceleration due to gravity at the surface is g:

The altitude above the surface is zero for an acceleration of g.

The initial velocity of the car is 26.9 m/s [S], and the final velocity is 0 m/s [S]. The time taken for the car to come to a stop is 2.61 s. Using the formula:

acceleration = (final velocity - initial velocity) / time

we can find the car's acceleration:

acceleration = (0 m/s - 26.9 m/s) / 2.61 s

acceleration = -10.305 m/s^2

The negative sign indicates that the car is decelerating, or slowing down.

To calculate the force acting on the car during the deceleration, we can use Newton's second law:

force = mass x acceleration

force = (1.18 × 10^3 kg) x (-10.305 m/s^2)

force = -12,166.1 N

The force acting on the car during deceleration is -12,166.1 N, or approximately 12.2 kN.