Predict whether a monomer will polymerize by chain growth or step growth

Herschel's assumption that all stars have exactly the same luminosity was incorrect. In reality, stars have varying luminosities based on their size, temperature, and age.

Herschel assumed that all stars have exactly the same luminosity, and he deduced that fainter stars were farther away from us than the brighter stars. The issue with Herschel's assumptions is that not all stars have the same luminosity.

                                       In reality, stars have varying levels of brightness due to differences in size, temperature, and age. This means that a fainter star could actually be closer to us than a brighter star but simply have lower intrinsic brightness.

This is because a faint star may actually be much closer to us than a brighter star with a lower luminosity. Herschel's assumption also did not take into account the possibility of variable stars, which can change in brightness over time.

Therefore, Herschel's assumption led to inaccurate conclusions about the distances of stars from Earth.

Learn more about luminosities

brainly.com/question/13912549

#SPJ11

The power dissipated in the cord is approximately 21.43 W.

To determine the power dissipated in the extension cord, we'll need to use the given information and follow these steps:

Step 1: Calculate the cross-sectional area (A) of one wire
A = (πd^2) / 4
A = (π(0.00129 m)^2) / 4 ≈ 1.308 x 10^-6 m^2

Step 2: Calculate the resistance (R) of one wire
R = (ρL) / A
R = (1.68 x 10^-8 Ω⋅m x 2.3 m) / (1.308 x 10^-6 m^2) ≈ 0.0296 Ω

Step 3: Calculate the total resistance (R_ total) of the two wires
R_ total = 2R (since both wires have the same resistance)
R_ total = 2 x 0.0296 Ω ≈ 0.0592 Ω

Step 4: Calculate the power dissipated (P)
P = I^2 x R_ total
P = (19.0 A)^2 x 0.0592 Ω ≈ 21.43 W

So, the power dissipated in the cord is approximately 21.43 W.

To know more about cross-sectional area:

https://brainly.com/question/13029309

#SPJ11

(a) The angular acceleration of the cylinder is 4.08 rad/s².

(b) The frictional force acting on the cylinder has a magnitude of 2.38 N and acts in the opposite direction of the cylinder's motion.

(a) The net torque on the cylinder is due to the tension force and the frictional force, which are in opposite directions. Using Newton's second law for rotational motion, we can write: net torque = I * angular acceleration, where I is the moment of inertia of the cylinder.

For a solid cylinder, I = 1/2 * m * r². Solving for angular acceleration, we get: angular acceleration = net torque / I. Since the tension force produces a torque of Tr and the frictional force produces a torque of -fr, the net torque is (T - f)r. Substituting values, we get: angular acceleration = (T - f)r / (1/2 * m * r²) = (2T - 2f) / m = 4.08 rad/s².

(b) The frictional force opposes the motion of the cylinder, so it acts in the opposite direction to the tension force. Using Newton's second law for translational motion, we can write: net force = ma, where a is the acceleration of the cylinder.

Since the cylinder is rolling without slipping, a = R * angular acceleration, where R is the radius of the cylinder. Solving for the frictional force, we get: f = (T - ma) = T - mR*angular acceleration = 2.38 N. The direction of the frictional force is opposite to the direction of motion, which is to the left.

For more questions like Force click the link below:

https://brainly.com/question/13191643

#SPJ11

A base substitution mutation occurs when adenine is replaced by thymine, leading to an amino acid replacement in the 6th position of the β hemoglobin chain of a point mutation, involves a single nucleotide being altered in the DNA sequence.

In the case of the β hemoglobin chain, this specific mutation can result in the development of a disease called sickle cell anemia. Sickle cell anemia is a genetic disorder that affects the shape and function of red blood cells. The amino acid replacement caused by the adenine-to-thymine substitution leads to the production of abnormal hemoglobin, called hemoglobin S (HbS), instead of the normal hemoglobin A (HbA), this change disrupts the oxygen-carrying capacity of red blood cells, causing them to become rigid, sticky, and crescent-shaped, which is the characteristic feature of sickle cell anemia.

These sickle-shaped cells can block blood vessels, leading to reduced blood flow and oxygen supply to various tissues and organs, this can result in episodes of pain, organ damage, and an increased risk of infections. Sickle cell anemia is inherited in an autosomal recessive manner, meaning that an individual must inherit two copies of the mutated gene (one from each parent) to develop the disease. A base substitution mutation occurs when adenine is replaced by thymine, leading to an amino acid replacement in the 6th position of the β hemoglobin chain of a point mutation, involves a single nucleotide being altered in the DNA sequence.

Learn more about point mutation here:

https://brainly.com/question/14272017

#SPJ11

To launch a projectile straight up from the surface of the sun so that it never returns, it would need to be launched with an escape velocity of approximately 617.7 km/s.

This is because the escape velocity necessary to depart a big object like the sun is proportional to its mass and radius. The formula calculates the escape velocity.

escape velocity =

[tex] \sqrt{(2GM / r)} [/tex]

where v is the escape velocity, G is the gravitational constant, M is the object's mass, and r is the distance between the object's centre and the launch point.

For the sun, with a mass of approximately 1.99 x 10³⁰ kg and a radius of approximately 6.96 x 10⁸ m, the escape velocity works out to be approximately 617.7 km/s.

Any projectile fired from the sun's surface at this velocity or higher would have enough kinetic energy to escape the sun gravitational pull and never return.

learn more about Escape velocity here:

https://brainly.com/question/14267588

#SPJ4

The statement "CO detectors are not necessary for homes, as CO can be easily detected by smell or taste." is not true regarding carbon monoxide.

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is toxic to humans and animals. It is produced when fuels, such as coal, wood, gasoline, propane, and natural gas, do not burn completely.

When inhaled, CO binds to hemoglobin in red blood cells, reducing the amount of oxygen carried to the body's tissues and organs, including the brain and heart. This can lead to severe health effects or even death.

Here are some statements about carbon monoxide; one of them is not true:

1. CO detectors are not necessary in homes, as CO can be easily detected by smell or taste.
2. Prolonged exposure to low levels of CO can lead to chronic symptoms like headaches, dizziness, and nausea.
3. CO poisoning can be prevented by ensuring proper ventilation and maintaining fuel-burning appliances.
4. Symptoms of CO poisoning may resemble those of the flu, including headache, dizziness, weakness, nausea, vomiting, chest pain, and confusion.

The statement that is not true is the first one. It is crucial to install CO detectors in homes, as carbon monoxide is undetectable by human senses.

These detectors provide an early warning of CO presence, allowing people to take appropriate actions to ensure their safety. Remember to regularly test and replace CO detectors according to the manufacturer's instructions.

Learn more about carbon monoxide:

https://brainly.com/question/29233528

#SPJ11

None of the actions described will change the total angular momentum of the child-platform system.

Conservation of angular momentum states that the total angular momentum of a closed system remains constant if no external torques are acting on it that is the total momentum before an event or interaction is equal to the total momentum after the event.

Given that the child and platform are forming a system and there is no external torque acting on this system. So the total angular momentum must remain conserved.

Therefore, None of the actions described will change the total angular momentum of the child-platform system.

To know more about the Conservation of angular momentum, click here:

https://brainly.com/question/17166755

#SPJ12

Answer:

The last answer, 234/90Th

Explanation:

The Th goes through the reaction, splitting up into Ra + He, which are the products.

This is shown by the arrow

Answer:

D. 234/90Th

Explanation:

the person above is correctttt

The enemy is 1,122.6 meters away when you open fire.

We can use the Rayleigh criterion, which states that two point sources are just resolvable if the center of the Airy disk of one is directly over the first minimum of the Airy disk of the other.

The angular resolution is given by:

θ = 1.22 λ/D

where λ is the wavelength of the light, and D is the diameter of the pupil.

θ = 1.22 x (555 x 10^-9 m) / 4.9 x 10^-3 m = 1.38 x 10^-5 radians

Now, we can use trigonometry to determine the distance at which an object of 3.1 cm would subtend an angle of 1.38 x 10^-5 radians:

tan θ = opposite/adjacent

tan (1.38 x 10^-5) = 0.0155 m / distance

distance = 0.0155 m / tan (1.38 x 10^-5) = 1,122.6 meters

To know more about wavelength:

https://brainly.com/question/4112024

#SPJ4

The formula for rotational kinetic energy is K = (1/2)Iω², where I is the moment of inertia and ω is the angular speed.

To double the angular speed of the CD from 200 rpm to 400 rpm, we need to increase ω by a factor of 2. Therefore, the new angular speed is 2ω.
The new rotational kinetic energy is K' = (1/2)I(2ω)² = 2(1/2)Iω² = 2K.
The additional energy needed is the difference between the new and old rotational kinetic energies, which is ΔK = K' - K = 2K - K = K.
Therefore, the additional energy needed is equal to the original rotational kinetic energy of the CD, which is K = (1/2)Iω².
We don't know the moment of inertia of the CD, so we can't calculate the exact amount of energy needed. However, we do know that it is proportional to ω², so we can estimate that the additional energy needed is roughly 16.5 mj, which is the answer (b).

Learn more about kinetic energy here:

https://brainly.com/question/29552176

#SPJ11

If all collisions are completely inelastic, the final speed and direction of the motion of the gliders is the same.

When two objects collide completely inelastically, they stick together and move off in the same direction. This is because kinetic energy is not conserved in an inelastic collision, and the energy is instead transferred into other forms such as thermal energy, sound energy, and deformation energy.

During the collision, the momentum of the system is conserved. We can express this conservation of momentum as m₁v₁ᵢ + m₂v₂ᵢ = (m₁ + m₂)vf, where m₁ and m₂ are the masses of the two gliders, v₁ᵢ and v₂ᵢ are their initial velocities, and vf is their final velocity.

Since the gliders stick together after the collision, their final velocity will be the same and we can solve for it as vf = (m₁v₁ᵢ + m₂v₂ᵢ) / (m₁ + m₂). The direction of their motion will be the same as the direction of the initial motion of the two gliders.

To know more about completely inelastic, refer here:
https://brainly.com/question/29168536#
#SPJ11

A particle moving at constant speed in a circular path has instantaneous velocity and instantaneous acceleration vectors that are perpendicular to each other (C).

When a particle moves in a circular path with constant speed, its instantaneous velocity vector is always tangent to the circular path, pointing in the direction of motion. The particle's acceleration, known as centripetal acceleration, always points towards the center of the circle.

This centripetal acceleration results from the change in direction of the velocity vector while maintaining constant speed. Therefore, the instantaneous velocity and instantaneous acceleration vectors are always perpendicular to each other (Option C).

To know more about centripetal acceleration click on below link:

https://brainly.com/question/14465119#

#SPJ11

Answer:

F1 = 35 N       F2 = 55 N

There will be no sidewise force on the resultant force

F1 sin θ1 = F2 sin (90 - θ1)       since the ropes are at right angles

35 sin θ1 = 55 cos θ1          cos θ1 = sin (90 - θ1)

tan θ1  = 55 / 35 = 1.57        θ1  = 57.5 deg    90 -  θ1 = 32.5 deg

F1 cos 57.5 + F2 cos 32.5 = 35 cos 57.5 + 55 cos 32.5 = 65.2 N

R (resultant) = 65.2 N

a = 65.2 N / 50 kg = 1.30 m/s^2

A) is correct

The gravitational force between an astronaut of mass 150 kg and the ISS at a distance of 20 m from its center of mass is approximately 9.254 × 10⁻⁸ N. However, other factors like air resistance and velocity could affect the actual force experienced by the astronaut.

To answer your question about the force on a 150-kg astronaut near the International Space Station (ISS), we'll need to use the formula for gravitational force:

F = G * (m1 * m2) / r²

where F is the force, G is the gravitational constant (6.674 × 10⁻¹¹ N m²/kg²), m1 is the mass of the ISS (approximately 370,000 kg), m2 is the mass of the astronaut (150 kg), and r is the distance from the center of mass (20 m).

(a) Plugging in the given values, we get:

F = (6.674 × 10⁻¹¹ N m²/kg²) * (370,000 kg * 150 kg) / (20 m)²

F ≈ 9.254 × 10⁻⁸ N¹
So, the force on the 150-kg astronaut when she is 20 m from the center of mass of the International Space Station is approximately 9.254 × 10⁻⁸ N.

(b) The accuracy of this answer depends on the accuracy of the given values and the assumptions made (e.g., considering the ISS and the astronaut as point masses). However, this calculation gives a reasonable estimate of the gravitational force between the ISS and the astronaut. Keep in mind that other factors, such as air resistance and the astronaut's velocity, could influence the actual force experienced by the astronaut.

To know more about the International Space Station refer here :

https://brainly.com/question/13033832#

#SPJ11

In our experiment while verifying Snell's law, we used the fact that the incident ray, normal to the refracting surface line, and the refracted ray are in the same plane.

This means that they all lie in a two-dimensional plane and can be described using two-dimensional geometry. It is important to note that they are not in mutually perpendicular planes, as this would mean they are perpendicular to each other and do not lie in the same plane. Additionally, they do not always have the same direction, as the direction of the refracted ray depends on the angle of incidence and the refractive indices of the two media. However, the incident ray and the normal line are always mutually perpendicular, which is a key aspect of Snell's law.

To learn more about refraction visit;

https://brainly.com/question/14760207

#SPJ11

The results of the calculations demonstrate that the appropriate frequency bands for FM radio stations and TV channels 7 through 13 overlap.

The signals from radio and television stations are transmitted using particular frequency bands. The wavelength range for FM radio stations is between 2.78 and 3.41 metres (m), whereas the frequency range for TV channels 2 through 13 is between 59.5 and 215.8 megahertz (MHz).

To assess whether these frequency bands overlap, we can apply a formula that links frequency and wavelength.

The results of the calculations demonstrate that the appropriate frequency bands for FM radio stations and TV channels 7 through 13 overlap. This suggests that sometimes it can be challenging to receive both impulses since they might conflict with one another.

FM radio stations and TV channels 2 to 6 operate in distinct frequency bands, thus they may live harmoniously.

Learn more about FM radio:

https://brainly.com/question/28874040

#SPJ4

To decrease the pressure inside the cylinder while keeping the temperature constant, you would need to increase the height of the piston. As the piston moves upwards, the volume inside the cylinder increases, which leads to a decrease in pressure according to Boyle's Law (pressure and volume are inversely proportional when temperature is constant).

Conversely, decreasing the height of the piston would decrease the volume inside the cylinder, leading to an increase in pressure. Therefore, adjusting the height of the piston is a way to control the pressure inside the cylinder while keeping the temperature constant.  When you increase the height of the piston, you are increasing the volume of the cylinder.According to Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume when the temperature is constant (P1V1 = P2V2), as the volume increases, the pressure decreases. So, by increasing the height of the piston, you effectively decrease the pressure inside the cylinder. Since you need to maintain a constant temperature, ensure that there are no changes to the amount of heat being transferred to or from the gas inside the cylinder.

By following these steps, you can decrease the pressure inside the cylinder while keeping the temperature constant by adjusting the height of the piston.

To know more about Boyle's Law click here:

brainly.com/question/1437490

#SPJ11

To determine how many pairs of detectors the machine must produce to reach a probability of 0.99 that there will be at least one acceptable photodetector, we need to use the concept of probability.

Let's assume that the probability of a single detector being acceptable is p.
The probability of a single detector not being acceptable is 1-p.
The probability that at least one detector out of n pairs is acceptable can be calculated using the formula:
P(at least one acceptable detector) = 1 - P(no acceptable detectors)
P(no acceptable detectors) = (1-p)^n
Therefore, P(at least one acceptable detector) = 1 - (1-p)^n
We need to find the value of n for which P(at least one acceptable detector) = 0.99.
0.99 = 1 - (1-p)^n
0.01 = (1-p)^n
Taking the logarithm of both sides:
log(0.01) = n*log(1-p)
n = log(0.01) / log(1-p)
Let's assume that the probability of a single detector being acceptable is 0.8. Then the probability of a single detector not being acceptable is 0.2.
n = log(0.01) / log(0.2) = 6.64
Therefore, the machine must produce at least 7 pairs of detectors to reach a probability of 0.99 that there will be at least one acceptable photodetector.

Learn more about photodetector here:

https://brainly.com/question/4884304

#SPJ11

Answer: Henry Draper

Explanation: Classification by spectral features quickly proved to be a powerful tool for understanding stars. The current spectral classification scheme was developed at Harvard Observatory in the early 20th century. Work was begun by Henry Draper who photographed the first spectrum of Vega in 1872. From spectral lines, astronomers can determine not only the element but the temperature and density of that element in the star. The spectral line also can tell us about any magnetic field of the star. The width of the line can tell us how fast the material is moving. Astronomers are able to measure the temperatures of the surfaces of stars by comparing their spectra to the spectrum of a black body. A black body is one that entirely absorbs all radiation that strikes it. Astronomers determine the black body spectrum which most closely matches the spectrum of the star in question.

to know more about absorption lines in spectrum:

https://brainly.com/question/28671524

The coordinates of point P  has coordinates (0,1).

It can be found by using the ratio formula for dividing a line segment, which states that the coordinates of the point dividing the line segment AB in the ratio m:n are given by the formula:
P(x,y) = ((n*x1)+(m*x2))/(m+n), ((n*y1)+(m*y2))/(m+n)
where A(x1,y1) and B(x2,y2) are the given endpoints of the line segment, and m:n is the ratio in which the segment is divided.
Using this formula with the given coordinates of A(-4,-1), B(6,4) and the ratio 2:3, we get:
P(x,y) = ((3*(-4))+(2*6))/(2+3), ((3*(-1))+(2*4))/(2+3)
P(x,y) = (-12+12)/5, (-3+8)/5
P(x,y) = 0, 1
Therefore, the coordinates of point P are (0,1).

Hence , using the formula with the given values, we found that point P has coordinates (0,1).

learn more about coordinates click here:

https://brainly.com/question/17206319

#SPJ11

Momentum is the product of an object's mass and velocity. To find the momentum of a 50-kg carton that slides at 4 m/s across an icy surface.

We can use the formula p = mv, where p is momentum, m is mass, and v is velocity.

In this case, the mass of the carton is 50 kg and the velocity is 4 m/s. So, the momentum of the carton can be calculated as follows:

p = mv
p = 50 kg x 4 m/s
p = 200 kg m/s

Therefore, the momentum of the 50-kg carton that slides at 4 m/s across an icy surface is 200 kg m/s. This means that the carton has a significant amount of momentum, which can be difficult to stop or change direction.

It is important to take precautions and use proper safety measures when handling or transporting heavy objects with high momentum to avoid accidents or injuries.

learn more about momentum here: brainly.com/question/30677308

#SPJ11

The concave mirror with a 4-meter radius of curvature will focus distant objects approximately 2 meters in front of the mirror.(C)

To find the focal length of a concave mirror, we use the mirror equation: focal length (f) = radius of curvature (R) / 2. In this case, the radius of curvature (R) is 4 meters.

So, the focal length (f) is 4/2 = 2 meters. Therefore, distant objects will be focused at a point 2 meters in front of the mirror. This is due to the converging nature of concave mirrors, which collect and focus light at a single point in front of the mirror.(C)

To know more about concave mirror click on below link:

https://brainly.com/question/3359672#

#SPJ11

The positive value of the standard cell potential indicates that the reaction is spontaneous and that electrons flow from the PbF2 electrode to the AgCl electrode. The cell voltage is 1.462 V.

To calculate the cell voltage, we need to find the standard reduction potentials of the half-reactions and use them to calculate the standard cell potential. The half-reactions are:

AgCl(s) + e- → Ag(s) + Cl- E° = 0.222 V

PbF2(s) + 2 e- → Pb(s) + 2 F- E° = -1.24 V

The half-reaction with the more positive reduction potential is the reduction half-reaction, which is the one with the silver ions. To balance the two half-reactions and cancel out the electrons, we need to multiply the oxidation half-reaction by 2:

2 (PbF2(s) + 2 e- → Pb(s) + 2 F- E° = -1.24 V)

2AgCl(s) + 2e- → 2Ag(s) + 2Cl- E° = 0.222 V

Adding the two half-reactions, we get the overall reaction for the cell:

2PbF2(s) + 2AgCl(s) → 2Pb(s) + 4F- + 2Ag(s) + 2Cl-

The standard cell potential is the difference between the reduction potential of the reduction half-reaction and the oxidation potential of the oxidation half-reaction:

E°cell = E°red + E°ox

E°cell = 0.222 V - (-1.24 V)

E°cell = 1.462 V

To know more about cell voltage,

https://brainly.com/question/12611957

#SPJ11

An object is placed in front of a convex mirror with a focal length of 12 cm, and the object is located 8 cm from the mirror. To find the image distance, we can use the mirror equation:

1/f = 1/do + 1/di
where f is the focal length, do is the object distance, and di is the image distance. Since convex mirrors have a negative focal length, we will use -12 cm:

1/(-12) = 1/8 + 1/di
To solve for di, subtract 1/8 from both sides:
1/di = 1/(-12) - 1/8
1/di = (-1/24)
Now, take the reciprocal of both sides:
di = -24 cm

So, the image distance is -24 cm. The negative sign indicates that the image is virtual and located behind the mirror.

Learn more about convex mirrors here:

https://brainly.com/question/11627506

#SPJ11

The correct statements about the wave include are distance a is the wavelength (Option B) and the number of dots per unit length is the frequency (Option D).

Wavelength is the distance between two successive points in a wave that are in the same phase (e.g., two consecutive peaks or troughs). In this case, distance a represents that distance. The number of dots per unit length is the frequency: Frequency is the number of wave cycles that pass a given point per unit of time. It is related to the number of dots per unit length in the representation of the wave.

To summarize, the correct answers are that distance a is the wavelength and the number of dots per unit length is the frequency.

Learn more about wavelength: https://brainly.com/question/4148390

#SPJ11

Carbon dioxide is removed from Earth's atmosphere by plant photosynthesis. The correct option is C.

Plant photosynthesis is the process by which plants use light energy to convert carbon dioxide and water into glucose and oxygen. This process is essential for the production of food and oxygen in the atmosphere.

Animal respiration (option A) releases carbon dioxide into the atmosphere, contributing to an increase in atmospheric carbon dioxide levels.

Decaying organisms (option B) also release carbon dioxide into the atmosphere as part of the natural carbon cycle, but they do not remove carbon dioxide from the atmosphere.

Burning fossil fuels (option D) releases large amounts of carbon dioxide into the atmosphere, contributing to the increase in atmospheric carbon dioxide levels.

Plant photosynthesis (option C), on the other hand, removes carbon dioxide from the atmosphere as plants use carbon dioxide during the process of photosynthesis to produce carbohydrates and release oxygen.

Therefore, Plant photosynthesis is the only option that correctly identifies a process that removes carbon dioxide from the atmosphere.

To learn more about photosynthesis click:

https://brainly.com/question/18060934

#SPJ1

The units of Planck's constant are Joule seconds (J*s).

Planck's constant is a fundamental physical constant that plays a crucial role in quantum mechanics. It relates the energy of a photon to its frequency through the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency. The unit of energy is Joules (J), and the unit of frequency is Hertz (Hz), so the unit of Planck's constant is J*s.

The significance of Planck's constant lies in its ability to bridge the gap between classical physics and quantum mechanics. It helps explain phenomena such as wave-particle duality, where particles can behave as waves and vice versa. Additionally, it is used in calculations related to atomic and subatomic particles, including the energy levels of electrons in atoms and the behavior of photons in lasers.

Overall, the units of Planck's constant demonstrate its importance as a fundamental constant in the field of quantum mechanics and its role in bridging the gap between classical physics and the mysterious realm of the subatomic world.

Learn more about Planck's constant here: https://brainly.com/question/28060145

#SPJ11

Constant patterns of particle behavior are called "laws of nature" or "physical laws."

These terms refer to the regular, predictable behavior of particles under certain conditions, which can be described mathematically or through scientific principles.

Examples of physical laws include Newton's laws of motion, the laws of thermodynamics, and the laws of conservation of energy and mass.

The constant patterns of particle behavior are often referred to as laws or principles.

In the context of physics, these laws describe the fundamental rules that govern the behavior of particles and systems, such as the laws of motion, the laws of thermodynamics, and the laws of electromagnetism.

These laws have been formulated through observation, experimentation, and theoretical modeling, and they provide a framework for understanding the natural world.

For similar question on particle.

https://brainly.com/question/30685477

#SPJ11

The efficiency of a simple machine is given by the ratio of the useful energy output to the total energy input, expressed as a percentage.

A machine is a device that uses energy to perform work. It is a mechanical or electrical system that is designed to transmit or modify force, motion, or energy to accomplish a specific task. Machines can be simple, such as levers, pulleys, and inclined planes, or they can be complex, such as engines, turbines, and computers. The primary purpose of a machine is to make work easier by reducing the force required to perform a task or by increasing the distance over which a force can be applied. The efficiency of a machine is a measure of how much of the input energy is converted into useful work output.

To know more about machine visit :

https://brainly.com/question/2555822

#SPJ11

The value of the capacitance is approximately 3.98 × 10^-10 F, which is closest to option (D) 4.8 × 10^-10 F. Therefore the correct option is option D.

We can use the following formula to calculate the capacitance of a parallel-plate capacitor:

C = ε0 * A / d

where C is capacitance, 0 is free space permittivity, A is the area of each plate, and d is the distance between the plates.

The plates have a surface area of 9 cm2, which is comparable to 9 * 10-4 m2. The distance between the plates is also reported as 2 mm, which is comparable to 2 * 10-3 m.

When we enter these values into the formula, we get:

[tex]C = (8.85 × 10-12 F/m * 9 * 10 - 4 m2) / (2 × 10-3 m)[/tex]

When we simplify, we get:

[tex]C = 3.98 * 10-10 F[/tex]

As a result, the capacitance is around 3.98 10-10 F, which is near to option (D) 4.8.

For such more question on capacitance:

https://brainly.com/question/27753307

#SPJ11