What are some model limitations?

Answer:

0.25

Explanation:

According to newtons law of motion

\sum F_x = ma

F_f =  ma

nR = ma

nmg = ma

ng = a

n = a/g

g is the acceleration due to gravity

Given

a = 2.42m/s²

g = 9.8m/s²

Substitute into the formula;

n = 2.42/9.8

n = 0.25

Hence the coefficient of kinetic friction is 0.25

Answer:

0.247

Explanation:

I had the same question and this is the correct answer.

the suu quark state consists of two strange quarks and one up quark, with a total charge of +2e/3 and a flavor of up, up, strange. This combination of quarks contributes to the overall properties and behavior of particles in the universe.

The particle suu corresponds to a combination of three quarks, specifically two strange quarks (s) and one up quark (u). Quarks are elementary particles that are the building blocks of protons and neutrons, which are collectively known as hadrons. Each quark has a specific charge and flavor.

The up quark (u) has a charge of +2/3e and a flavor of up. The strange quark (s) has a charge of -1/3e and a flavor of strange. When combined, the suu quark state has a total charge of +2e/3 and a flavor of up, up, strange.

It is important to note that quarks are never observed in isolation due to a property called color confinement. This means that quarks are always bound together to form particles, such as protons and neutrons, that have no net color charge.

In summary, the suu quark state consists of two strange quarks and one up quark, with a total charge of +2e/3 and a flavor of up, up, strange. This combination of quarks contributes to the overall properties and behavior of particles in the universe.

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Answer:

At the topmost point where the velocity has only horizontal component whereas the acceleration is vertical.

Explanation:

There is only a horizontal component of velocity at the ap3x of the projectile, and acceleration is vertically downwards owing to gravitation, therefore velocity and acceleration are perpendicular to one another.

From the question, the compression that is able to produce the maximum speed is 1.73 m.

We can see that there is potential energy stored in the spring. This energy can be converted into kinetic energy when a spring is released. In this case, the spring can now be able to do a meaningful work as we can see.

The image that shows the set up of the question can be seen clearly in the image that is attached to this answer as we can see. We can now write the following;

W = dmgsin∅

Where W is the work done by the spring, we have;

1/2 kx² = dmgsin∅

k = force constant

x = compression

d = distance covered

∅ = angle covered

Thus we can substitute the values as;

(0.5 * 170 * x²) = 4 * 13 * 9.8 * sin 30

x² = 4 * 13 * 9.8 * sin 30/0.5 * 170

x² = 254.8/85

x = 1.73 m

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The finite-difference formulation of the one-dimensional heat conduction problem in a pin fin with constant diameter and thermal conductivity, losing heat by convection and radiation, can be used to determine the temperatures T1 and T2 at the middle and tip nodes of the fin, respectively, given a specified temperature at the base node and negligible heat transfer at the tip node.

The finite-difference formulation involves discretizing the differential equation governing heat transfer into a set of algebraic equations that can be solved numerically. For this problem, the energy balance equation at node i can be written as:

(Ti+1 - Ti)/Δx - (Ti - Ti-1)/Δx = hP/A(T∞ - Ti) + εσP/A(Tsur - Ti)

where Ti is the temperature at node i, P is the perimeter of the fin, A is the cross-sectional area of the fin, h is the convection coefficient, T∞ is the ambient temperature, ε is the emissivity of the fin, σ is the Stefan-Boltzmann constant, and Tsur is the average temperature of the surrounding surfaces.

Using the boundary conditions of Ti = T0 at i = 0 and (Ti+1 - Ti)/Δx = 0 at i = n, where n is the number of nodes, we can solve the system of equations to obtain the temperatures T1 and T2.

This finite-difference formulation provides a numerical solution for the temperatures at different nodes of the pin fin, taking into account the effects of convection and radiation on heat transfer.

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The complete question is:

The image attached.

The total amplitude of the waveform can be calculated by multiplying 2 volts/div by 3 divisions, which gives a total amplitude of 6 volts.

When a waveform is measured on the oscilloscope and its amplitude covers three vertical divisions, and the vertical control is set at 2 V/div, the total amplitude of the waveform can be calculated using the following formula:

Total amplitude = Amplitude/Division * No. of divisions.

Total amplitude = 2 V/div * 3 div.

Total amplitude = 6 V

Explanation: The amplitude of a waveform refers to the maximum displacement of the waveform from its equilibrium position.

On the oscilloscope, the amplitude of the waveform is measured by vertically dividing the screen into several divisions.

The amplitude of a waveform can be determined by calculating the number of divisions covered by the waveform and multiplying it by the amplitude per division.

The vertical control is used to adjust the amplitude of the waveform displayed on the oscilloscope.

If the vertical control is set at 2 V/div, it means that each vertical division corresponds to a voltage of 2 volts.

Hence, the total amplitude of the waveform can be calculated by multiplying the amplitude per division with the number of divisions covered by the waveform.

In this case, the waveform covers three vertical divisions, and the amplitude per division is 2 volts.

Hence, the total amplitude of the waveform is 6 volts.

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Answer:

2.4m/s towards the bowling pins

Explanation:

Given parameters:

Mass of the ball  = 6.6kg

Momentum of the ball  = 15.9kgm/s

Unknown:

Speed of the ball  = ?

Solution:

The momentum is the amount of motion a body posses;

      Momentum = mas x velocity

Insert the parameters and solve;

      15.9  = 6.6 x velocity

        velocity  = 2.4m/s towards the bowling pins

My answer is addiction... It's addiction when it's the first thing you turn on in the morning and in the night when you sleep late when watching the TV.

Answer:

Mass , this is the answer because mass allows objects of any size to be moved depending on the force of the impact , push or turn

Incomplete question. However, I provided some information about when a converging or diverging lens is used. The common ones are:

Explanation:

In other to correct eyesight problems certain types of lenses are used depending on the condition.

Diverging lens: If the individual is suffering from nearsightedness (myopia); a condition that prevents a person from seeing distant objects clearly, but is able to see close objects clearly, then a divergent lens may be used to correct his eyesight.

Covergent lens: In a case where the person has a condition that prevents him from seeing close objects clearly while distant objects may be clear is called Farsightedness (hyperopia).

Answer:

Fog forms in a valley

Explanation: that’s the only reasonable response

An example of condensation Fog disappears when the Sun comes out.

Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle.

The process through which the physical state of matter changes from the gaseous phase into the liquid phase Fog disappears when the Sun comes out.

An example of condensation Fog disappears when the Sun comes out.

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Mercury is present in zinc plate which is used in simple cell

In conclusion, discrete numerical modeling of loose soil with spherical particles and interparticle rolling friction involves representing particles as discrete entities and simulating their interactions using mathematical equations. This approach allows us to study the behavior of loose soil and gain insights into its properties and response under different conditions.

Discrete numerical modeling is a technique used to simulate the behavior of loose soil with spherical particles and interparticle rolling friction. In this approach, the soil is represented by discrete particles, and their interactions are modeled using mathematical equations.
To simulate the behavior of loose soil, the following steps are typically involved:
1. Particle representation: Each particle in the soil is represented as a discrete entity with its own properties, such as size, shape, and material properties.
2. Interaction modeling: The interactions between particles are modeled based on physical principles, such as interparticle rolling friction. These interactions affect the movement and behavior of the particles.
3. Numerical simulation: Mathematical equations are used to simulate the motion of particles over time. These equations consider various factors, such as gravitational forces, interparticle friction, and contact forces between particles.
4. Solution calculation: The equations are solved numerically to obtain the positions and velocities of the particles at each time step.
5. Analysis and conclusion: The simulation results are analyzed to gain insights into the behavior of loose soil. This analysis can include studying the particle arrangements, deformation patterns, and other properties of the soil under different conditions.
In conclusion, discrete numerical modeling of loose soil with spherical particles and interparticle rolling friction involves representing particles as discrete entities and simulating their interactions using mathematical equations. This approach allows us to study the behavior of loose soil and gain insights into its properties and response under different conditions.

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According to the information available in the question, the force constant is 2.37N/m.

Using the relation;

T = 2π√m/k

T = period = 0.500 s

m = mass in kilograms = 0.0150-kg

k = spring constant = ?

Making k the subject of the formula;

k = 4π^2m/T^2

k = 4 × (3.142)^2 ×  0.0150/(0.500 )^2

k = 2.37N/m

What is force?

A mass object's velocity changes when it is pushed or pulled. Its SI unit is Newton and its base SI unit is \(kgm/s^{2}\). A device, spring balance is used to measure force.

There are two effects of force, it changes the speed and the direction.

How much force is 1 newton?

1 newton is the amount of force, is the force required to accelerate a mass of 1 kg at 1 m per second with respect to time.

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The minimum speed that the block must have at the base of the 70 m hill to pass over the pit at the far side of the hill is 37.1 m/s.

To determine the minimum speed that the block must have at the base of the 70 m hill to pass over the pit at the far side of the hill, we can use the formula for potential energy, which is PE = mgh,

where m is the mass of the block, g is the acceleration due to gravity, and h is the height of the hill.

We can also use the formula for kinetic energy, which is KE = (1/2)mv^2, where m is the mass of the block and v is the speed of the block.

Since the block must have enough energy to pass over the pit at the far side of the hill, we can set the potential energy equal to the kinetic energy and solve for the speed:

PE = KE

mgh = (1/2)mv^2

Simplifying and rearranging the equation, we get:

v^2 = 2gh

Taking the square root of both sides, we get:

v = sqrt(2gh)

Plugging in the given values for g (9.8 m/s^2) and h (70 m), we get:

v = sqrt(2 * 9.8 * 70)

v = 37.1 m/s

Therefore, the minimum speed that the block must have at the base of the 70 m hill to pass over the pit at the far side of the hill is 37.1 m/s.

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Answer:

2. 1.85

Explanation:

the equations weight * distance / other persons weight = distance from fulcrum. so 66.4*2.35/84.2=1.8532 round down to 1.85

Answer:

For a dry-cell battery to operate, oxidation will occur from the zinc anode and reduction will take place in the cathode. The most common type of cathode is a carbon graphite. Once reactants have been turned into products, the dry-cell battery will work to produce electricity.

Explanation:

The battery operates through electrochemical reactions called oxidation and reduction. These reactions involve the exchange of electrons between chemical species. If a chemical species loses one or more electrons, this is called oxidation. The opposite process, the gain of electrons, is called reduction.

As motorists drive onto the acceleration lane, they must get up to the speed limit, signal, find an opening, and then merge.

When entering an acceleration lane, motorists need to match the speed of the traffic on the main lane, which typically means getting up to the speed limit. This ensures a smooth transition into the flow of traffic and promotes safety on the road.

After reaching the desired speed, it is important for motorists to signal their intention to merge. Signaling indicates to other drivers that they plan to move into the main lane. This allows surrounding drivers to be aware of their intentions and adjust their own driving accordingly.

Once the motorist has signaled their intention to merge, they need to find an opening in the main lane. This means identifying a safe gap in traffic that allows for a smooth merge without disrupting the flow of other vehicles. Once a suitable opening is identified, the motorist can merge by adjusting their position and smoothly transitioning into the main lane.

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The average force needed to accelerate an 8.00-gram pellet from rest to 155 m/s over a distance of 0.900 m along the barrel of a rifle is approximately 15.1 N.

To calculate the average force, we can use Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a): F = m * a.

First, we need to convert the mass of the pellet from grams to kilograms: m = 8.00 g = 8.00 × 10⁻³ kg.

Next, we can calculate the acceleration using the equation of motion: v² = u² + 2as, where v is the final velocity, u is the initial velocity (which is 0 since the pellet starts from rest), a is the acceleration, and s is the distance traveled along the barrel.

Plugging in the given values, we have: 155² = 0² + 2 * a * 0.900.

Simplifying the equation: 24025 = 1.8a.

Solving for acceleration: a = 24025 / 1.8 ≈ 13347 m/s².

Finally, substituting the mass and acceleration into Newton's second law: F = 8.00 × 10⁻³ kg * 13347 m/s² ≈ 15.1 N.

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If the width of the slit through which light from a red laser passes to form a diffraction pattern is increased, the width of the central maximum increases.

In the phenomenon of diffraction, light bends around the edges of obstacles or through the edges of an aperture or a slit. The pattern formed on a screen placed on the other side of the obstacle or slit is referred to as a diffraction pattern. In a diffraction pattern formed by a narrow single slit through which light from a red laser passes, the central maximum is the bright region at the center of the pattern.

The intensity of the light in the central maximum is the highest of all the diffraction maxima.The width of the central maximum increases as the width of the slit through which light from a red laser passes to form a diffraction pattern is increased. This is because when the slit width is increased, the amount of diffraction of light increases. The greater the diffraction, the wider the central maximum.

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The number of panels required when the efficiency of the machine changes to 50% is 1,600 panels.

The efficiency of a machine or any device is the measure of the ratio of the output energy or output work of the machine or device to the input work or energy of the device.

The efficiency of the PV farm describes how well it converts solar energy from the sun into useful energy.

The smaller the number of panels required by the PV farm, the more efficient the PV farm is and vice versa.

The number of panels required when the efficiency of the machine changes is calculated as follows;

40% ------> 2,000 panels

50% --------> ?

= (40 x 2000) / 50

= 1,600 panels

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Answer:

25000 N

Explanation:

\(force \: = pressure \times area \\ = 50000 \times 0.5 \\ = 5000 \times 5 \\ = 25000 \: N\)

Answer:

Average speed = 0, Average velocity = 0.02 m/s

Explanation:

Given that,

A car travels from A to B and from B back to A.

The distance between A and B is 12 km

It took 20 minutes to travel full.

We need to find the average speed and the average velocity of the car.

As the car reaches the point from where it was started, the displacement of the car is equal to 0. As a result, the average velocity is equal to 0.

For average speed,

\(s=\dfrac{12+12}{60\times 20}\\\\s=0.02\ m/s\)

Hence, this is the required solution.

Answer:

-7.5

Explanation:

edge 2021

Resistance in a circuit is equal to voltage divided by current (R=V/I).

The resistance of an electrical circuit refers to the difficulty with which an electric current flows through it. It is symbolized by the letter R and is expressed in ohms (Ω). A resistor is an electrical component that is used to increase resistance in a circuit, while a conductor is an electrical component that is used to reduce resistance in a circuit. Ohm's law, which states that the current flowing through a conductor is directly proportional to the voltage across it, is one of the fundamental laws of electricity.

Ohm's law formula is I = V/R, which states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor. Ohm's law is an essential tool for electrical engineers and technicians, and it is used to calculate the voltage, current, and resistance of circuits.

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Answer: Native Plutonian

Explanation: It means someone who is on pluto or born on pluto.

Answer: Plutoean, Plutanese, Plutain

Explanation:

I am from pluto, which therefore makes me Plutanese.

btw isnt pluto a dwarf planet...

Answer:

This is basically Simple Harmonic Motion - where the wave disturbance is in the same direction as the wave direction.

That describes (B).

note that y = A cos ω t          where the disturbance is y and ω the the angular frequency and is in the same direction as the disturbance y

This seems the make (D) a satisfactory answer

The projection of the disturbance y is perpendicular (sinusoidal) to the time axis, but the disturbance is still in the same direction as the wave motion

The wave generated by a spring is a transverse wave where, the particles oscillate in a direction perpendicular to the the wave motion.

Mechanical waves are energy transfer through a medium. Unlike electromagnetic waves, mechanical waves cannot transfer through vacuum.

There are two types of mechanical waves namely, transverse waves and longitudinal waves. Transverse waves are those in which the oscillation of particles or disturbance is created perpendicular to the wave motion.

In longitudinal waves, the particle motion or disturbance is created along the wave motion. The wave generated in a spring is transverse wave thus, the disturbance created by moving it up and down will be perpendicular to the wave motion.

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