A marble is thrown norizontally from a tarble top with a velocity of 1. 50m/s. The marble falls 0. 70m away from te table'ede. How high is the lab table? what is the marble's velocity just before it hits the floor

As for the Voltage across the inductor, it is equal to zero after four time constants because the current in the circuit has decreased to zero. Therefore, the correct answer for part (b) is zero, not 0.107.

When the switch is in position 1, the circuit is closed and the battery is connected in series with the inductor and resistor. This means that current flows through the circuit, causing a magnetic field to be generated by the inductor. However, when the switch is suddenly moved to position 2, the circuit is opened and the battery is no longer connected.

After the switch is moved, the current in the circuit begins to decrease due to the inductor's opposition to changes in current. The time it takes for the current to decrease to 36.8% of its original value is known as the time constant, which is calculated by dividing the inductance of the inductor by the resistance of the resistor.

After four time constants, the voltage across the resistor can be calculated using the equation V = V0 * e^(-t/RC), where V0 is the initial voltage, t is the time elapsed, R is the resistance, and C is the capacitance. Plugging in the values given, we get V = 193 * e^(-4/RC) = 3.53 volts.

As for the voltage across the inductor, it is equal to zero after four time constants because the current in the circuit has decreased to zero. Therefore, the correct answer for part (b) is zero, not 0.107.

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Hubble concluded that there is a linear redshift-distance relationship; that is, if one galaxy is twice as far away as another, its redshift is twice as large.

In 1929, Edwin Hubble published his first paper on the relationship between redshift and distance. He tentatively concluded that there is a linear redshift-distance relationship; that is, if one galaxy is twice as far away as another, its redshift is twice as large.

This relationship is known as the Hubble relation. If you graph this relation, the slope of the line is the Hubble constant or a measure of the expansion rate of the universe.

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The speakers in a sports stadium are 89. 5 m from a fan's seat. It takes approximately 0.261 seconds for sound to travel from the speakers to the fan's seat in the sports stadium.

The time it takes for sound to travel from the speakers to the fan's seat can be calculated using the formula

Time = distance / speed

Where distance is the distance between the speakers and the fan's seat, and speed is the speed of sound in air.

In this case, the distance between the speakers and the fan's seat is 89.5 m, and the speed of sound in air is 343 m/s (at standard temperature and pressure).

Plugging in these values into the formula, we get

Time = 89.5 m / 343 m/s

Time = 0.261 seconds

Therefore, it takes approximately 0.261 seconds for sound to travel from the speakers to the fan's seat in the sports stadium.

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The frequency of the 5th harmonic of a 5 Hz fundamental is 25 Hz.

To find the frequency of the 5th harmonic (h₅) of a 5 Hz fundamental, you need to multiply the fundamental frequency (f₁) by the harmonic number (n). The formula is:

fₙ = n*f₁

where:

fₙ = frequency of the nth harmonic

f₁ = fundamental frequency

n = harmonic number

In this case, the fundamental frequency (f₁) is 5 Hz and the harmonic number (n) is 5. So, the frequency of the 5th harmonic (h₅) would be:

h₅ = 5 * 5

= 25 Hz

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Vibration of an object about an equilibrium point is called simple harmonic motion when the restoring force is proportional to the displacement from the equilibrium point and is directed towards the equilibrium point.

This is known as Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position.

Mathematically, this can be expressed as F = -kx, where F is the restoring force, x is the displacement from the equilibrium point, and k is the spring constant, a measure of the stiffness of the spring.

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(a) Pb = 2π * N * T

(b) Pf = mf * CV

(c) Brake Thermal Efficiency (ηb) = (Pb / Pf) * 100%

To determine the brake power, fuel power, and brake thermal efficiency, we can use the following formulas:

(a) Brake Power (Pb):

Pb = 2π * N * T

Where N is the shaft speed in revolutions per minute (rpm) and T is the torque.

(b) Fuel Power (Pf):

Pf = mf * CV

Where mf is the fuel consumption rate in kilograms per second and CV is the calorific value of the fuel in joules per kilogram.

(c) Brake Thermal Efficiency (ηb):

ηb = (Pb / Pf) * 100%

Let's calculate these values using the given information:

(a) Brake Power:

Shaft Speed N = 2600 rev/min

Torque arm R = 16 cm = 0.16 m

The torque (T) can be calculated using the formula:

T = F * R

Brake Power (Pb) = 2π * N * T

(b) Fuel Power:

Fuel consumption mf = 2 g/s = 0.002 kg/s

Calorific Value (CV) = 42 MJ/kg = 42 × [tex]10^6[/tex] J/kg

Fuel Power (Pf) = mf * CV

(c) Brake Thermal Efficiency:

Brake Thermal Efficiency (ηb) = (Pb / Pf) * 100%

Let's substitute the given values into the equations and calculate the results.

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The acceleration due to gravity on the surface of the other planet is approximately 77.98 m/s².

To find the acceleration due to gravity on another planet, we can use the formula:

Weight = Mass × Acceleration due to gravity

On Earth, your weight is given as 742.32 N, and the acceleration due to gravity is 9.80 m/s².

We can rearrange the formula to solve for mass:

Mass = Weight / Acceleration due to gravity

So, on Earth, your mass would be:

Mass on Earth = 742.32 N / 9.80 m/s²

Mass on Earth = 75.63 kg

Now, let's consider the surface of another planet where your weight is given as 5900.91 N.

We'll use the same formula and solve for the acceleration due to gravity on that planet:

5900.91 N = Mass × Acceleration due to gravity on the other planet

Substituting the value of mass we calculated earlier:

5900.91 N = 75.63 kg × Acceleration due to gravity on the other planet

Now, we can solve for the acceleration due to gravity on the other planet:

Acceleration due to gravity on the other planet = 5900.91 N / 75.63 kg

Acceleration due to gravity on the other planet ≈ 77.98 m/s²

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The momentum of an object is directly proportional to its mass and velocity. Therefore, the momentum of the larger truck can be calculated as follows:

Momentum of larger truck = (2 x mass of smaller truck) x (1/2 x velocity of smaller truck)

Momentum of larger truck = (2 x m) x (0.5 x 20)

Momentum of larger truck = m x 20

This shows that the momentum of the larger truck is equal to the momentum of the smaller truck, as the increased mass is balanced by the decreased velocity.

In other words, the momentum of an object depends on both its mass and velocity, and changes in one factor can be compensated by changes in the other factor to maintain the same momentum.

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If the 50-kg crate starts from rest and achieves a velocity of v = 4 m/s when it travels a distance of 5 m to the right. The magnitude of force P acting on the crate is 80 N, and the total force acting on the crate is 227 N.

To determine the magnitude of force P acting on the crate, we need to use the equations of motion and the concept of friction. The force acting on the crate can be expressed as the sum of the force due to P and the force due to friction.

First, we can calculate the force due to friction, which is given by the formula Ff = μk x Fn, where Fn is the normal force acting on the crate. Fn can be calculated by multiplying the mass of the crate by the acceleration due to gravity (9.8 m/s²):

Fn = m x g

Fn = 50 kg x 9.8 m/s²

Fn = 490 N.

Therefore, Ff = 0.3 x 490 N = 147 N.

Next, we can use the equations of motion to calculate the force due to P. We can use the formula[tex]v^2 = u^2 + 2as[/tex], where u = 0 m/s (since the crate starts from rest), v = 4 m/s, and s = 5 m.

Solving for a, we get [tex]a = 4^2 / (2 \times 5) = 1.6\; m/s^2.[/tex] The force due to P can be calculated using the formula F = ma, where m is the mass of the crate:[tex]F = 50 \;kg \times 1.6\; m/s^2 = 80 N.[/tex]

Finally, we can add the force due to friction and the force due to P to get the total force: Ftotal = Ff + F = 147 N + 80 N = 227 N.

Therefore, the magnitude of force P acting on the crate is 80 N, and the total force acting on the crate is 227 N.

In summary, to determine the magnitude of force P acting on a crate, we can use the equations of motion and the concept of friction. By calculating the force due to friction and the force due to P, we can add them to get the total force acting on the crate.

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The magnitude of the force that a magnetic field exerts on a charged particle is given by the equation:

F = qvB sin(theta)

where q is the charge of the particle, v is its velocity, B is the magnetic field strength, and theta is the angle between the velocity vector and the magnetic field vector.

In this case, the proton has a positive charge of +1.6 x 10^-19 C, and it is moving eastward with a velocity of 5.0 km/s. The magnetic field is pointing northward with a strength of 0.20 T.

The angle between the velocity vector and the magnetic field vector is 90 degrees, since the velocity is eastward and the magnetic field is northward.

Plugging these values into the equation, we get:

F = (1.6 x 10^-19 C)(5.0 x 10^3 m/s)(0.20 T) sin(90)

F = 1.6 x 10^-19 N

So the magnitude of the force that the magnetic field exerts on the proton is 1.6 x 10^-19 N.

The direction of the force can be determined using the right-hand rule. If you point your right thumb in the direction of the proton's velocity (eastward), and your fingers in the direction of the magnetic field (northward), then the direction of the force vector is perpendicular to both, pointing downward. Therefore, the direction of the force on the proton is southward.

The ultraviolet catastrophe is good evidence for the (B).wave nature of quanta is correct option.

The ultraviolet catastrophe was a problem in classical physics that arose when attempting to explain the spectral distribution of blackbody radiation. According to classical physics, the energy of radiation should increase without limit as the frequency of the radiation increases. However, experiments showed that this was not the case, and there was a maximum frequency beyond which the energy decreased.

This problem was resolved by Max Planck in 1900, who proposed that energy is quantized and can only exist in discrete packets or "quanta". This led to the development of quantum mechanics, which describes the behavior of matter and energy at the atomic and subatomic level.

The wave-particle duality is a fundamental concept in quantum mechanics that describes the dual nature of particles, which can exhibit both wave-like and particle-like behavior depending on the experimental setup. However, the ultraviolet catastrophe is specifically related to the wave nature of quanta, as it was the wave-like behavior of energy that led to the resolution of the problem.

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The frequency of the wave produced by oscillating one end of the rope up and down 2.0 times a second is also 2.0 Hz (Hertz).

Frequency is defined as the number of oscillations or cycles that a wave completes in one second. In this case, each oscillation of the rope creates one complete cycle of the wave.

Therefore, if the rope is oscillating 2.0 times per second, it is completing 2.0 cycles of the wave each second, which is equivalent to a frequency of 2.0 Hz.

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Explanation:

To find the average speed of the train, we can use the formula:

average speed = total distance / total time

To find the total distance, we need to calculate the distance traveled during each segment of the trip:

- Distance traveled at 60 km/h for 0.52 hours = 60 km/h * 0.52 h = 31.2 km

- Distance traveled at 30 km/h for 0.24 hours = 30 km/h * 0.24 h = 7.2 km

- Distance traveled at 70 km/h for 0.71 hours = 70 km/h * 0.71 h = 49.7 km

Total distance = 31.2 km + 7.2 km + 49.7 km = 88.1 km

To find the total time, we simply add up the times for each segment:

Total time = 0.52 h + 0.24 h + 0.71 h = 1.47 hours

Now we can use the formula to find the average speed:

average speed = total distance / total time = 88.1 km / 1.47 h ≈ 59.86 km/h

Therefore, the average speed of the train is approximately 59.86 km/h.

Answer:

According to the only context given, the correct answer is induction.

A copper wire was measured to be 50.0m long with an uncertainty of 1cm and had a thickness of 1.00mm measured with a micrometer screw gauge. The volume of copper used was [tex]3.93 \times 10^{-5}\; m^3[/tex] with an uncertainty of [tex]\pm 7.85 \times 10^{-9} m^3[/tex].

The volume of copper used can be calculated by multiplying the length, cross-sectional area, and density of copper. The length is given as 50.0 m with an uncertainty of [tex]\pm 0.01[/tex]m, and the thickness of the wire is given as 1.00 mm, which is equivalent to 0.001 m.

The cross-sectional area of the wire can be calculated using the formula for the area of a circle, which is πr², where r is the radius of the wire.

The radius of the wire can be calculated by dividing its thickness by 2, giving a value of 0.0005 m. Therefore, the cross-sectional area is [tex]\pi (0.0005)^2 = 7.85 \times 10^{-7} m^2[/tex]. The density of copper is 8.96 g/cm³, which is equivalent to [tex]8.96 \times 10^3 \;kg/m^3[/tex].

Using the formula V = L x A, where V is the volume of copper, L is the length of the wire, and A is the cross-sectional area, we get:

[tex]V = (50.0 \pm 0.01 m) \times (7.85 \times 10^{-7} m^2)[/tex]

[tex]V = 3.93 \times 10^{-5} m^3 \pm 7.85 \times 10^{-9} m^3[/tex]

To account for the uncertainties in the measurements, we used significant figures and error propagation rules. The uncertainty in the volume was calculated using the formula for the multiplication of quantities with uncertainties.

In summary, the volume of copper used was found to be [tex]3.93 \times 10^{-5}\; m^3[/tex] with an uncertainty of [tex]\pm 7.85 \times 10^{-9} m^3[/tex].

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The third piece moves at an angle of 39.8° relative to the x-axis, which is in the northeast direction.

We can start the problem by using conservation of momentum. The momentum before the impact is zero since the plate is at rest, and the momentum after the impact is the sum of the momenta of the three pieces.

Since there are no horizontal forces during the crash, the total momentum is conserved in the x and y directions separately.

Let's call the velocity of the third piece v and assume it moves at an angle θ relative to the x-axis. Then we can write the following equations:

Initial momentum in x-direction = Final momentum in x-direction

0 = 0.32 kg * 2.00 m/s + 0.355 kg * 0 m/s + 0.1 kg * v cos(θ)

Initial momentum in y-direction = Final momentum in y-direction

0 = 0.32 kg * 0 m/s + 0.355 kg * 1.50 m/s + 0.1 kg * v sin(θ)

Simplifying these equations, we get:

0.64 = 0.1 v cos(θ)

0.535 = 0.1 v sin(θ)

We can divide the second equation by the first equation to get:

tan(θ) = 0.535/0.64 = 0.836

Taking the inverse tangent of both sides, we get:

θ = 39.8°

Therefore, the third piece moves at an angle of 39.8° relative to the x-axis, which is in the northeast direction.

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Answer:

.92 T

Explanation:

This is just a plug-and-chug question.

Here is the formula: B = uni

u = vacuum permeability = 4pi * 10^-7 this is a given constant

n = turns per meter = 1040/ (4.4*10^-2)

i = current = 31 A also given by the problem

so B = .92 T

The unit of the magnetic field is Tesla ("T")

The linear frequency that should be selected for the power supply for the circuit to operate at resonance is 2077.9 Hz.

To find the linear frequency that should be selected for the power supply for the circuit to operate at resonance, we can use the formula for resonant frequency of an RLC circuit:

f = 1 / (2π√(L*C))

where f is the resonant frequency, L is the inductance in henries, and C is the capacitance in farads.

In this case, the capacitance is given as 77.7 μF, which is equivalent to 0.0777 F, and the inductance is given as 28.6 mH, which is equivalent to 0.0286 H. The resistance is given as 630.5 Ω.

Substituting these values into the formula, we get:

f = 1 / (2π√(0.0286 H * 0.0777 F)) = 2077.9 Hz

At this frequency, the inductive reactance and the capacitive reactance cancel out, and the impedance of the circuit is purely resistive, resulting in maximum current flow and minimum power loss.

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The period of the electromagnetic wave is 5×10⁻¹⁰ seconds

Period is the time taken for a wave to complete one rotation.

To calculate the period of the wave, we use the formula below.

Formula:

Where:

From the question,

Given:

substitute these values equation 1

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Answer:Assuming the mass of the spring is not changed, the frequency of the mass-spring system will increase if the length of the spring is cut into one third. This is because the frequency of a mass-spring system is inversely proportional to the square root of the length of the spring. Mathematically, the frequency (f) is given by:

f = 1 / (2π) x √(k/m)

where k is the spring constant and m is the mass of the system. Since the mass of the spring is not changing, if the length of the spring is cut into one third, the square root of the length will become √(1/3) = 0.577. Therefore, the frequency of the system will increase by a factor of 1/0.577, which is approximately 1.73 or √3.

Explanation:

When a neutral balloon is rubbed on your hair, the balloon becomes negatively charged because it gains electrons from your hair. The process of triboelectric charging occurs because of the difference in the materials' ability to give up or gain electrons.

When you rub an electrically neutral balloon on your hair, some electrons are transferred from your hair to the surface of the balloon. As a result, the balloon becomes negatively charged, and your hair becomes positively charged.

This is because electrons are negatively charged particles, and when they move from one object to another, the object that loses electrons becomes positively charged, and the object that gains electrons becomes negatively charged.

The process of transferring electrons from one object to another through friction is called triboelectric charging, and it occurs because some materials have a stronger tendency to give up electrons, while others have a stronger tendency to gain electrons.

In summary, when a neutral balloon is rubbed on your hair, the balloon becomes negatively charged because it gains electrons from your hair. The process of triboelectric charging occurs because of the difference in the materials' ability to give up or gain electrons.

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This standing wave corresponds to the third harmonic. The fundamental frequency of a guitar string is determined by the length of the string, which in this case is 61 cm.

When a standing wave is produced on the string, the nodes (points where the wave has zero displacement) and antinodes (points of maximum displacement) can be counted to determine the harmonic number. In this case, the number of antinodes is 3, which corresponds to the third harmonic.

The fundamental frequency of the string is determined by the equation f = 1/2L√T/m, where L is the length of the string, T is the tension, and m is the mass per unit length of the string. The third harmonic frequency is three times the fundamental frequency, which is calculated by multiplying the fundamental frequency by 3. Therefore, the third harmonic frequency of the guitar string is three times the fundamental frequency.

In addition, the wavelength of the third harmonic is one-third of the wavelength of the fundamental frequency. This is because the wavelength of a wave is inversely proportional to its frequency. The wavelength of the third harmonic is one-third of the wavelength of the fundamental frequency, and the distance between the antinodes is one-third of the wavelength. Therefore, the standing wave with three antinodes corresponds to the third harmonic.

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If an object is speeding up, the sign of its velocity and acceleration are the same. Option B is correct.

This means that both velocity and acceleration are positive if the object is moving in the positive direction and negative if the object is moving in the negative direction. Acceleration is defined as the rate of change of velocity over time, so if an object is speeding up, its velocity is increasing over time. This increase in velocity can be positive or negative, depending on the direction of motion, but in either case, the acceleration must be in the same direction as the velocity.

Distance and speed are not inversely proportional in this case, as they can both increase or decrease together when an object is speeding up. The magnitude of velocity and acceleration are not always zero, as they can be positive or negative depending on the direction of motion. Option B is correct.

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Tasting water to identify which cup contains salty water or fresh water may not be reliable, as taste can be subjective and some individuals may have a weaker sense of taste.

Another approach is to use a conductivity meter or a multimeter with conductivity measurement capabilities to test the water in each cup. Salty water has a higher conductivity than fresh water due to the presence of ions, so the cup with higher conductivity would contain the salty water.

A third approach is to use a refractometer to measure the refractive index of the water. Salty water has a higher refractive index than fresh water due to the presence of dissolved salts, so the cup with a higher refractive index would contain the salty water.

In summary, to determine which cup contains salty water and which contains fresh water, one can use taste, a conductivity meter, a multimeter with conductivity measurement capabilities, or a refractometer.

Each of these methods has its own advantages and disadvantages, and the choice of method depends on factors such as the resources available and the specific characteristics of the water being tested.

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The cyclist's power output must be equal to 784 N x speed. To climb the same hill at the same speed, the cyclist's power output must be equal to the gravitational force acting on the system (bicycle plus rider) multiplied by the speed at which they are moving.

The gravitational force can be calculated using the formula F = mg, where m is the total mass of the system (80 kg) and g is the acceleration due to gravity (9.8 [tex]m/s^{2}[/tex]). Therefore, the gravitational force acting on the system is 784 N (80 kg x 9.8 [tex]m/s^{2}[/tex]).

Assuming that the speed at which they are moving is constant, the power output required by the cyclist can be calculated using the formula P = F x v, where P is power, F is force, and v is velocity (speed). Therefore, the cyclist's power output must be equal to 784 N x speed.

For example, if the speed is 5 m/s, then the power output required by the cyclist would be 3920 watts (784 N x 5 m/s). However, it's important to note that this is a theoretical calculation and in reality, the power output required may be different due to factors such as air resistance, friction, and the gradient of the hill.

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The speed of the 8 kg ball must be 0.83 m/s to the right.

To solve this problem, we can use the principle of conservation of momentum, which states that the total momentum of a system of objects is conserved if no external forces act on the system. Before the explosion, the total momentum of the system is zero since both balls are at rest.

After the explosion, the total momentum of the system is still zero, so the momentum of the 5 kg ball to the left must be balanced by the momentum of the 8 kg ball to the right. We can use the formula for momentum, which is momentum = mass x velocity. Let v be the velocity of the 8 kg ball after the explosion.

Then we have

5 kg x (-1.3 m/s) + 8 kg x v = 0

Solving for v, we get:

v = (5 kg x 1.3 m/s) / 8 kg = 0.8125 m/s

Since the velocity is to the right, we get:

v = 0.83 m/s to the right.

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The new process will cause the demand for book printing services to increase, and this will cause the price of book printing services to fall.

The long-run equilibrium will shift to a new equilibrium, where the new cost structure will be reflected in the price of book printing services. The new process will result in lower prices and higher demand for book printing services, leading to an increase in the number of firms in the book printing industry, as well as an increase in the size of the market.

The cost savings due to the new process will be passed on to consumers, resulting in lower prices for books. This will benefit both the book printing companies as well as the consumers.

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Charged particles are fundamental to the behavior of electric currents, electric circuits, and resistance. An electric current is the flow of charged particles, typically electrons, through a conductor.

The flow of charged particles generates an electric field that induces a potential difference, or voltage, across the conductor.Electric circuits are constructed by connecting conductors and electrical components, such as resistors, capacitors, and inductors, in a specific configuration. The arrangement of the components determines how the current flows through the circuit.

The flow of current through the circuit depends on the resistance offered by the components in the circuit and the potential difference across the circuit.Resistance is the property of a conductor that opposes the flow of current. The resistance of a conductor is proportional to the number of charged particles in the conductor, the length of the conductor, and the cross-sectional area of the conductor. The resistance can also be affected by the temperature of the conductor and its material properties.

In summary, charged particles are responsible for generating electric currents that flow through electrical circuits. The behavior of the currents is determined by the arrangement of the components in the circuit and the resistance offered by the conductors and components. Resistance is a fundamental property of a conductor that opposes the flow of charged particles and can be affected by various factors.

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Using Newton's second law, F = ma, and the known mass of a proton, 1.673 x [tex]10^{27}[/tex] kg, the initial acceleration of the protons would be approximately 1.38 x [tex]10^{1}[/tex] [tex]m/s^{2}[/tex].

If the protons were not held together by the strong nuclear force, they would experience an electric force due to their positive charges.

According to Coulomb's law, the electric force between two charges is proportional to the product of the charges and inversely proportional to the square of the distance between them.

Therefore, the initial acceleration of the protons would depend on their separation distance and the magnitude of their charges.

Assuming a separation distance of 1 angstrom ([tex]10^{-10}[/tex] m), the electric force between two protons with charges of 1.602 x [tex]10^{-19}[/tex] C would be approximately 2.31 x [tex]10^{-28}[/tex] N.

Using Newton's second law, F = ma, and the known mass of a proton, 1.673 x [tex]10^{-27}[/tex] kg, the initial acceleration of the protons would be approximately 1.38 x [tex]10^{1}[/tex] [tex]m/s^{2}[/tex].

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Answer: yes

Explanation: good luck