Maxwell's model is a mechanical representation of the behavior of an ideal gas. It was conceived in the nineteenth century by James Clerk Maxwell. An ideal gas.
according to Maxwell's concept, is made up of a huge number of particles that are in continual random motion and collide with each other and the container's walls. These particles are classified as point masses, which means they have no volume or structure. The model assumes that collisions are fully elastic, which means that no energy is wasted and the particle speed remains constant. Maxwell's model may be used to predict the behavior of an ideal gas in a variety of thermodynamic states, including pressure, temperature, and volume. It also enables us
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a contractor is pulling a 1500n crate with a force of 1600n at an acceleration of 3 m/s 2 . what is the coefficient of friction between the crate and the floor?
The coefficient of friction between the crate and the floor is approximately 0.97.
when the normal force can be calculated with ?
N = m * g
where μ is the coefficient of friction, N is the normal force (the force perpendicular to the surface), and f_friction is the frictional force acting on the object.
The equation for the frictional force between a surface and an object can be expressed as:
f_friction = μ * N
where m is the mass of the crate (1500 N is its weight, so m = 1500 N / 9.8 m/s^2 = 153 kg), and g is the acceleration due to gravity (9.8 m/s^2).
So,
N = 153 kg * 9.8 m/s^2 = 1497 N
The frictional force can now be calculated using the equation:
f_friction = μ * N = μ * 1497 N
The net force acting on the crate can be expressed as:
f_net = f_applied - f_friction = 1600 N - f_friction = 1600 N - μ * 1497 N
The acceleration of the crate can be calculated using the equation:
a = f_net / m = (1600 N - μ * 1497 N) / 153 kg
Now, we can set the acceleration equal to the given value of 3 m/s^2:
3 m/s^2 = (1600 N - μ * 1497 N) / 153 kg
Solving for μ, we get:
μ = (1600 N - 153 kg * 3 m/s^2) / 1497 N
The coefficient of friction between the crate and the floor is approximately 0.97.
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in exercise 5 in the previous section what is the andromeda
The Andromeda Galaxy's acceleration rate toward the Milky Way contains approximately 4.0 X 10^11 stars with an average mass of 2.0 X 10^30 kg each is 3 x 10^-12m/s^2
Given the mass of andromeda (m) = 2 x 10^30kg
The number of stars (n) = 4.0 X 10^11
If the Milky Way is drawn to the Andromeda Galaxy, which has nearly the same number of stars.
So, the total mass of andromeda (M) = n x m = 4.0 X 10^11 x 2 x 10^30kg
M = 8 x 10^41kg
The gravitational force (F) = 2.4 x 10^30 N
Let the acceleration acting on it is = a
We know that from Newtons laws of motion, F = Ma such that:
2.4 x 10^30 N = 8 x 10^41 x a
a = 2.4 x 10^30 / 8 x 10^41
a = 3 x 10^-12m/s^2
Hence, the Andromeda Galaxy's acceleration rate toward the Milky Way is 3 x 10^-12m/s^2
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complete question: Our galaxy, the Milky Way , contains approximately 4.0 X 10^11 stars with an average mass of 2.0 X 10^30 kg each. How far away is the Milky Way from our nearest neighbor, the Andromeda Galaxy, if Andromeda contains roughly the same number of stars and attracts the Milky Way with a gravitational force of 2.4 x 10^30 N? In Exercise 5 in the previous section, what is the Andromeda Galaxy's acceleration rate toward the Milky Way?
andy left his house and went 2 m east of his house. he then went 1 m south, 5 m west, and 1 m north. What is his displacement for this trip?
According to Pythagoras's Theorem, the square of the hypotenuse side in a right-angled triangle is equal to the sum of the squares of the other two sides.
Describe the three Pythagorean theorems?A, B, and C are the three positive integers, and the Pythagorean triples are written as a2+b2 = c2. These triples are shown as (a,b,c). Here, the right-angled triangle's base, hypotenuse, and perpendicular are denoted by letters a, b, and c, respectively. The most popular and diminutive triplets include (3,4,5).
O is at a right angle in AOB.
∴ By using the Pythagoras Theorem, (AB² = (OB)²+ (OA)²
AB² = 4² + 3²
AB = √(4² + 3²)
AB = 5
∴ He has traveled 5 kilometers.
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(a) How many milliamperes are there in 1 ampere?
1000 miliamperes are there in 1 ampere .
What is ampere ?
The ampere (A) is the standard unit of current in the International System of Units (SI). It is used to measure the flow of charge in a circuit, producing a specific force between two parallel conductors of infinite length and negligible cross-sectional area placed one meter apart in a vacuum. Defined as the amount of current. Amperes are an important concept in electrical engineering and physics because they help describe the flow of electrons in circuits and the interaction between charged particles.
For example, a current of 1 ampere represents a charge flow of 1 coulomb per second. This can be visualized as a large number of electrons flowing through the wire. Amperes are used to calculate other important electrical quantities such as power and energy. They are essential to understanding how electrical circuits work and how electrical devices are designed.
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The skid marks made by an automobile indicated that its breaks were first applied for a distance of 60 meters (m) before it came to a complete stop. The car in question is known to have a constant deceleration of 20 m/s2 under these conditions. How fast (in km/h) was the car traveling when the brakes were first applied?
The car was traveling at approximately 67.2 km/h when the brakes were first applied.
This can be determined by using the equation s = ut + 0.5at^2, where s is the distance traveled before the brakes are applied (60 m), u is the initial velocity (in km/h), a is the deceleration (20 m/s2) and t is the time taken to come to a stop.
Rearranging the equation to solve for u gives u = (2s/at)^(1/2), so the initial velocity is (2 x 60)/(20 x 1)^(1/2) = 67.2 km/h.
To further explore this topic, you could look into how the deceleration affects the stopping distance of the car. In particular, you could investigate how the deceleration affects the braking distance, which is the total distance the car travels before it comes to a complete stop.
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How high is luigi’s center of gravity at the end of his flight, when he first hits the other side?
Luigi's center of gravity refers to the point in his body where the weight of his body is evenly balanced. This point changes when Luigi is in flight, and determining its height at any given moment can give us insight into his movements and stability. In this case, we will calculate the height of Luigi's center of gravity at the end of his flight, when he first hits the other side.
To calculate the height of Luigi's center of gravity, we need to take into account his weight distribution, body position, and velocity. When Luigi jumps, his body rotates in the air, causing his center of gravity to move upward. This upward motion continues until Luigi reaches the peak of his jump, at which point the center of gravity begins to move downward.
When Luigi lands on the other side, he decelerates rapidly, which causes his center of gravity to shift forward. This shift in weight distribution can cause Luigi to lose his balance and fall. However, skilled video game characters like Luigi have the ability to quickly adjust their body position to regain balance.
In conclusion, the height of Luigi's center of gravity at the end of his flight, when he first hits the other side, is influenced by his weight distribution, body position, and velocity. It is a complex calculation that takes into account many factors and can vary greatly depending on the specifics of the situation. Nevertheless, understanding the principles of center of gravity and how it affects movements can help us better understand and predict the movements of characters like Luigi.
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you observe a ball that moves (34.5 ± 0.1) cm in (19.84 ± 0.01) s. what is the observed speed of the ball (best estimate and most probable uncertainty)? (speed = distance / time)
The required speed of the ball when distance and time are given is calculated to be (1.74 ± 0.01) cm/s.
The formula for speed is speed = distance/time. Using the given values, we can calculate the observed speed of the ball as follows:
Distance is given as (34.5 ± 0.1) cm.
Time is given as (19.84 ± 0.01) s.
Speed = distance / time = (34.5 ± 0.1)/(19.84 ± 0.01)
Using the most probable uncertainty (±0.5 times the smallest uncertainty), we can estimate the uncertainty in the speed calculation as follows:
Uncertainty in distance = 0.1 cm
Uncertainty in time = 0.01 s
Uncertainty in speed = (uncertainty in distance) / (time) ± 0.5 * (smallest uncertainty)
= (0.1) / (19.84) ± 0.5 * (0.01)
= 0.0050 ± 0.005 cm/s
Therefore, the observed speed of the ball is (1.74 ± 0.01) cm/s.
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how does the instantaneous velocity of an object in free fall can be calculated from displacement and time data
The instantaneous velocity of an object in free fall can be calculated from displacement and time data by using the equation v = Δx / Δt and by considering the acceleration of the object to be constant.
The velocity can be found by approaching the limit of the average velocity as the time interval becomes infinitesimally small, allowing for the precise calculation of the velocity of an object in free fall.
In the case of an object in free fall, the acceleration is constant and equal to the acceleration due to gravity, which is approximately 9.8 m/s² on the surface of the earth. This means that the velocity of the object changes at a constant rate as it falls, and the instantaneous velocity can be calculated using the displacement and time data.
For example, if an object falls from a height of 100 meters and takes 2 seconds to reach the ground, the average velocity can be calculated as follows:
v = Δx / Δt = 100 m / 2 s = 50 m/s
As the time interval becomes smaller and smaller, the average velocity approaches the instantaneous velocity. By using high-speed cameras or other advanced measuring devices, the displacement and time data can be analyzed over very small intervals of time, allowing for the precise calculation of the instantaneous velocity of an object in free fall.
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if a star gives off radiation at 655 nm, what is its temperature? round your answer to 1 decimal place. your answer:
The temperature of a star is 4372K and can be estimated from its radiation spectrum using Wien's Law
The temperature of a star can be estimated from its radiation spectrum, and in particular, the peak wavelength of its emission. This is based on Wien's Law, which states that the peak wavelength of the radiation emitted by a black body is inversely proportional to its temperature.
Formula:
T = 2.898 * 10^6 / lambda, where lambda is peak wavelength (nm)
T = 2.898 * 10^6 / 655
T = 4372 K
Therefore, temperature of a star is 4372K.
The temperature of a star plays a crucial role in its evolution and can give us important insights into the star's age, size, and composition, as well as its potential to support life.
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A laser pulse with wavelength 533 nm contains 4. 26 mj of energy. How many photons are in the laser pulse?.
There are approximately 1.10 x 10^16 photons in the laser pulse with a wavelength of 533 nm and an energy of 4.26 mJ.
The energy of a photon can be calculated using the formula:
E = hc / λ
where h is Planck's constant (6.62607015 x 10^-34 Js), c is the speed of light (2.99792458 x 10^8 m/s), and λ is the wavelength of the photon.
For a 533 nm wavelength photon, the energy can be calculated as:
E = (6.62607015 x 10^-34 Js) x (2.99792458 x 10^8 m/s) / (533 x 10^-9 m)
E = 3.872 x 10^-19 J
The number of photons in the laser pulse can be calculated by dividing the total energy by the energy per photon:
N = 4.26 x 10^-3 J / (3.872 x 10^-19 J)
N = 1.10 x 10^16 photons is the required answer.
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Vector a has a magnitude of 25 units and makes +20 degree with the +x-axis. Vector b has a magnitude of 20 units, and makes +60 degree with the +x-axis. What is the angle between the directions of the two vectors?
Angle between the directions of the two vectors is 27.04 degrees.
What is vector?In physics, vector is a quantity that has both magnitude and direction.
Angle between the directions of two vectors is given by the arccosine of the dot product of two vectors divided by the product of their magnitudes.
x and y components of vector a are as :
a_x = 25 * cos(20) = 24.49
a_y = 25 * sin(20) = 9.75
x and y components of vector b are as:
b_x = 20 * cos(60) = 10
b_y = 20 * sin(60) = 17.32
The dot product of a and b is:
a · b = a_x * b_x + a_y * b_y = 24.49 * 10 + 9.75 * 17.32 = 242.79
Magnitude product of a and b is: |a| * |b| = 25 * 20 = 500
θ = arccos(a · b / |a| * |b|) = arccos(242.79 / 500) = 27.04 degrees.
So, the angle between the directions of the two vectors is 27.04 degrees.
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Imagine that a brown horse and a white horse cross to produce an offspring whose coat is made up of some brown hairs and some white hairs. Which pattern of dominance is this an example of? Complete dominance, incomplete dominance or codominance?
The offspring of bay horses and white horses, whose coats consist of both brown and white fur, contain two dominant alleles. Organisms with this type of trait show codominance.
In genetic terms, codominance refers to a mode of inheritance in which two versions of the same gene (alleles) of her are expressed separately to produce different traits in an individual. Codominance and incomplete dominance are two types of genetic inheritance. Codominance essentially means that neither allele can block or mask the expression of the other allele. Incomplete dominance, on the other hand, is the condition in which the dominant allele does not completely mask the influence of the recessive allele. The offspring of bay horses and white horses, whose coats consist of both brown and white fur, contain two dominant alleles. Organisms with this type of trait show codominance.
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are the direction and magnitude of the coulomb force unique at a given point in space? what about the electric field?
No, the direction and magnitude of the Coulomb force are not unique at a given point in space. The Coulomb force depends on the charge of the two objects and the distance between them. Therefore, the Coulomb force can vary depending on the location of the other charges.
The electric field, on the other hand, is unique at a given point in space. It is determined by the charge distributions of all objects in the vicinity and does not change with the position of the other charges.
What is magnitude?
Magnitude is a measure of the strength or intensity of a natural phenomenon, such as an earthquake or a hurricane. Magnitude is usually expressed on a logarithmic scale, with each unit representing a tenfold increase in intensity. For example, an earthquake with a magnitude of 4 is 10 times more intense than one with a magnitude of 3.
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What is the displacement of a cyclist who travels 2 miles north, 2 miles east, and finally 2 miles south?
The displacement of the cyclist is obtained as 2.
What is the displacement?We have to note that the displacement is a vector quantity and as such the direction of the displacement is taken to be very important as we are discussing the topic. We have to look not just at the magnitudes but also at the direction of the movement.
We have that; a cyclist who travels 2 miles north, 2 miles east, and finally 2 miles south. The displacement is then; 2 - 2 + 2 = 2
Thus the displacement of the cyclist can be taken as 2.
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what is the gravitational force on a 70.0 kg that is 6.38x106 m above the earth’s surface?
As per the details given, the gravitational force on a 70.0 kg object that is 6.38 x [tex]10^6[/tex] m above the Earth's surface is approximately 171.36 Newtons.
The gravitational force can be calculated as:
F = mg
Here, it is given that:
m = 70.0 kg
h = 6.38 x [tex]10^6[/tex] m
To compute the gravitational force at that height, we must account for the reduction in gravitational acceleration as height increases.
Gravitational acceleration is inversely proportional to the square of the distance from the Earth's centre.
g' = g * (R / (R + h))²
g' = 9.8 * ((6.37x [tex]10^6[/tex] ) / ((6.37x [tex]10^6[/tex] ) + 6.38x [tex]10^6[/tex] ))²,
g' = 9.8 * (6.37x [tex]10^6[/tex] / 12.75x [tex]10^6[/tex] )²,
g' ≈ 9.8 * [tex](0.4996)^2[/tex],
g' ≈ 9.8 * 0.2496,
g' ≈ 2.448 m/s².
Now we can calculate the gravitational force:
F = mg,
F = 70.0 kg * 2.448 m/s²,
F ≈ 171.36 N.
Thus, the gravitational force is 171.36 Newtons.
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ways to report potential fraud, waste, and abuse (fwa) include:
There are many ways to report fraud like hotlines, online reporting, email or postal mail, and in person reporting.
There are several ways to report potential fraud, waste, and abuse (FWA) depending on the situation and the reporting individual's preference.
Hotlines - Many organizations have established hotlines that allow individuals to confidentially report potential FWA. These hotlines are often staffed by trained professionals who can assist with the reporting process and provide guidance on next steps.Online reporting - Some organizations have established online reporting portals that allow individuals to submit a report of potential FWA via the internet. These portals often allow individuals to submit a report anonymously and securely.Email or Postal Mail - Some organizations may accept reports of potential FWA through email or postal mail.In-Person reporting - Individuals may choose to report potential FWA in person, either to their immediate supervisor, a designated manager, or to a designated FWA reporting office.It is important for individuals to feel confident that their report will be taken seriously and treated confidentially.
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which of the following materials would you choose for optimal performance in the charge storage layer of a capacitor? which of the following materials would you choose for optimal performance in the charge storage layer of a capacitor? material a: high dielectric constant low electrical resistivity material b: low dielectric constant high electrical resistivity material c: low dielectric constant low electrical resistivity material d: high dielectric constant high electrical resistivity
For optimal performance in the charge storage layer of a capacitor, you would choose material A: "high dielectric constant and low electrical resistivity".
The dielectric constant (ε) of a material is a measure of its ability to store electrical charge, and the electrical resistivity (ρ) is a measure of its resistance to the flow of electrical current. In a capacitor, the charge storage layer must have a high dielectric constant in order to store a large amount of electrical charge, and a low electrical resistivity in order to allow the charge to flow easily and quickly.
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molecular weight of the dye and distance of diffusion: 1. what is the independent variable?
Independent Variable:
The independent variable is a variable in an experiment that is manipulated or changed by the experimenter to observe its effect on the dependent variable. The independent variable is also referred to as the manipulated variable, the predictor variable, or the explanatory variable.
In an experiment, the independent variable is the factor that is being changed or manipulated to see its effect on the dependent variable. The independent variable is the variable that is being tested to determine its impact on the outcome. For example, if a scientist wants to see how different levels of light affect plant growth, the independent variable is the level of light, and the dependent variable is the growth of the plant.
In regards to molecular weight of the dye and distance of diffusion, the independent variable would depend on the specific experiment being conducted. For example, if the experiment is focused on determining how the molecular weight of a dye affects its rate of diffusion, then the independent variable would be the molecular weight of the dye, and the dependent variable would be the rate of diffusion. On the other hand, if the experiment is focused on determining how distance affects the rate of diffusion of a specific dye, then the independent variable would be the distance, and the dependent variable would be the rate of diffusion.
In either case, it's important to clearly identify and manipulate only one independent variable at a time to determine its effect on the dependent variable, as other variables could confound the results if not controlled or accounted for.
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How much is 92 in Fahrenheit to Celsius?
Fahrenheit to Celsius Conversion: (°F - 32) × 5/9
(92°F - 32) × 5/9 = 33.3333°C
How is celsius defined?
Celsius (°C) is a temperature scale used widely in the scientific world. It is based on the Celsius temperature scale, where the freezing point of water is 0°C and the boiling point of water is 100°C. The degree Celsius is the SI derived unit for temperature in the metric system.
The Celsius temperature scale was created by Swedish astronomer Anders Celsius in 1742. It is the standard temperature scale used in most countries, including the United States, Canada, and the United Kingdom. In the Celsius scale, a temperature difference of one degree Celsius is the same as a temperature difference of one Kelvin (K).
This makes it easier to compare temperatures between the two scales. Celsius is also known as centigrade, which comes from the Latin centum (“hundred”) and gradus (“steps”).
Therefore, 92 in Fahrenheit to Celsius is 33.3333°C.
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as part of an exercise program, a woman walks south at a speed of 1.2 m/s for 50 minutes. she then turns around and walks north a distance 2,450 m in 51 minutes . what is the woman's average speed in m/s during her entire motion?
The average speed of the woman during her entire motion is 4,900 m / (6060 s) = 0.805 m/s.
Absolute distance is (2,450 m + 2,450 m) = 4,900 m.
The absolute time she went for to stroll this distance is 50 minutes + 51 minutes = 101 minutes.
To switch minutes over completely to seconds, duplicate by 60: 101 minutes * 60 seconds/minute = 6060 seconds.
In this way, the typical speed of the lady during her whole movement is 4,900 m/(6060 s) = 0.805 m/s.
A lady took a stroll as a component of her work-out daily practice. She strolled south at a speed of 1.2 meters each second for 50 minutes. From that point onward, she pivoted and strolled north for a distance of 2450 meters quickly. The absolute distance she covered while strolling was 2450 meters + 2450 meters = 4900 meters. The absolute time she went for the entire stroll was 50 minutes + 51 minutes = 101 minutes, which is identical to 6060 seconds. Thus, her typical speed during the entire walk was 4900 meters/6060 seconds = 0.805 meters each second.
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Click Oscillate in the upper-right corner, which will cause the electron to move on its own. Watch the
waves transmitted and received in the window. How does the wave change when it reaches the receiver?
The wave would be amplified when it gets to the receiver.
What are electron waves?We know that a wave is a disturbance along a medium which leads to the transmission of energy. In this case we can see that the electrons have been set into vibration as we can see in the question.
We have to know that this a longitudinal waves and that the waves will impinge on the surface of the receiver and cause an amplification of the wave that have been caused the electrons in motion. This is clear from the description that we have above.
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Suppose you are changing a car tire and loosening a lug nut. You weigh 800N and stand on the end of a 2 m long wrench. How much torque do you exert on the lug nut?
a. 1600 J
b. 1600 N-m
c. 800 N-m
d. 2 N-m
The torque exerted by the person on log nut is 1600 N-m, if person's weight is 800 N, and the length of the wrench is 2 meter.
Torque in rotational motion is equivalent to the what force is in linear motion. As force cause a push or pull in linear motion, similarly torque causes a twist in clockwise or anticlockwise direction. It causes the change in the rotational motion of a body. Its SI unit is N-m. & It is formulates as follows:
Torque = Force × lever arm × sinθ
τ = Frsinθ
Where θ is the angle between the force and the lever arm.
Torque = 800 × 2 = 1600 N-m
Hence option B is correct.
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the takeoff speed for a boeing 737 is about 250 km/h. it reaches its take off speeds after a 50 seconds. what is its acceleration?
The acceleration of the Boeing 737 during takeoff is 1.389 m/s^2. This value represents the rate at which the aircraft's velocity changes with time.
The takeoff speed of an aircraft is the minimum speed required for the aircraft to become airborne and climb safely into the sky. The acceleration of an aircraft during takeoff is the rate at which its velocity changes with time. In this case, the takeoff speed of a Boeing 737 is 250 km/h and it reaches this speed after 50 seconds. To determine the acceleration, we need to calculate the change in velocity (final velocity minus initial velocity) and divide it by the time taken.
Detailed Explanation:
The initial velocity of the Boeing 737 is 0 km/h (assuming the aircraft is at rest before takeoff). The final velocity is 250 km/h. To convert these speeds from km/h to m/s, we divide by 3.6. The initial velocity is 0 m/s and the final velocity is 250/3.6 = 69.44 m/s. The change in velocity is 69.44 m/s - 0 m/s = 69.44 m/s. To find the acceleration, we divide the change in velocity by the time taken, which is 50 seconds.
Acceleration (a) = (change in velocity) / time
a = (69.44 m/s) / (50 s)
a = 1.389 m/s^2
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Hello, could someone please help me. thank you view the pics below.
The particles that are in the interior of the atom are the nucleons while the particles at those on the shells are the electrons.
What are the Subatomic particles in the atom?Atoms are composed of three types of subatomic particles: protons, neutrons, and electrons.
Protons: Positively charged particles that are found in the nucleus of an atom. The number of protons in an atom's nucleus is called its atomic number, which determines the identity of the element.
Neutrons: Neutral particles that are also found in the nucleus. The number of neutrons in an atom can vary, and they help to determine the mass of an atom.
Electrons: Negatively charged particles that occupy the electron cloud or shells surrounding the nucleus. Electrons are much lighter than protons and neutrons and are involved in chemical reactions. The arrangement of electrons in an atom determines its chemical properties and reactivity.
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Steam is quickly compressed by a piston in a cylinder with a compression ratio of 4:1. Before compression, the temperature of the steam is 400K, and the steam is at atmospheric pressure. After compression, the temperature of the steam is 600K. What is most nearly the work per unit mass done by the piston?Is the answer: 330 kJ/kg 300 kJ/kg 325 kJ/kg 315 kJ/kg
The work per unit mass done by the piston is 300 [tex]\frac{kJ}{kg}[/tex].
At state 1 for steam
[tex]P_{1}[/tex]= 101. 325 kpa
[tex]T_{1}[/tex]= 400K = 127 °C
Now, see from the property table
[tex]u_{1}[/tex]= 2550 [tex]\frac{kJ}{kg}[/tex]
Now, at State 2
[tex]P_{2}=101.325\times 4=405.3[/tex]kpa
[tex]T_{2}[/tex]=600K= 327 °C
Now, see from the property table
[tex]u_{2}[/tex]=2850 [tex]\frac{kJ}{kg}[/tex]
Now, the work done is W which is given by
The definition of work done includes both the forces applied to the body and the total displacement of the body.
A constant force F is present before to this block. The goal of this force is to move the body d meters in a straight line in the force's direction.
W=[tex]u_{2}-u_{1}[/tex]
W=2850-2550
W=300 [tex]\frac{kJ}{kg}[/tex]
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what direction would you head from new york state to find wamer temputres
You should move towards south - western direction.
What is temperature?Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness.
Given is to find the locations around New York where warmer temperatures are to be found.
During every season Florida, Louisiana and Texas are consistently among the top four of the nation's hottest states, based on state-wide average temperatures. So, you should move towards south - western direction.
Therefore, you should move towards south - western direction.
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in 2000, a gargantuan iceberg broke away from the ross ice sheet in antarctica. it was approximately a rectangle with dimensions 295 km long, 37.0 km wide, and 250.0 m thick. what is the mass of this iceberg, given that the density of ice is 917 kg/m3 ?
Answer:
M = ρ V
V = 2.95E5 * 3.7E4 * 250 m^3 = 2.76E12 m^3 total volume of ice
M = 917 kg/m^3 * 2.76E12 m^3 = 2.53E15 kg
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A runner covers the last straight stretch of a race in 3.5 seconds. During that time, he speeds up from 6.8 m/s at a rate of 1.5 m/s^2. What is the
runner's final speed when he crosses the finish line?
When the runner crosses the finish line, his final speed is 1m/s2.
What is Acceleration?The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily. An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting. The definition of acceleration is the speed at which velocity varies with respect to time. Since acceleration has both a magnitude and a direction,
it is a vector quantity.
We can use the Kinematic relationship:
vf = vi+at
where:
vf = final velocity;
vi = initial velocity;
a = acceleration;
t = time.
With your data:
1.5=6.8+3.5a
rearranging:
3.5a=1.5-6.8
3.5a=-5.3
a=3.5(m/s)/3.5(s)
=1m/s^2
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transform the polar equation to an equation in rectangular coordinates. then identify and graph the equation. rsin /theta = 1
The equation in rectangular coordinates is y = 1, which is a straight line that intersects the y-axis at y = 1 and extends in both positive and negative x directions. The graph of the equation is a horizontal line at y = 1.
The equation "r sin(θ) = 1" is a polar equation, where r represents the radial distance from the origin and θ represents the angle. To convert this equation to rectangular coordinates, we can use the relationships x = r cos(θ) and y = r sin(θ). Substituting r sin(θ) with 1 in the y equation gives us y = 1. Solving for r cos(θ) in terms of x gives us r cos(θ) = sqrt(r^2 - 1). This equation describes a family of half-circles centered at the origin with a radius of 1, and it is a standard graph in polar coordinate systems.
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the fluid's specific gravity and volume are 2.57 and 74.8 ft3, respectively. determine the fluid specific weight in unit of lbf/ft3. round to the nearest one decimal place.
The fluid's specific gravity and volume are 2.57 and 74.8 ft3, respectively. The fluid specific weight in unit of lbf/ft3. round to the nearest one decimal place is 159.6 lbf/ft3
The fluid's specific weight can be calculated as follows:
specific weight = specific gravity . density of water
Where,
specific gravity = 2.57
density of water = 62.4 lbf/ft3,
So, specific weight = 2.57 . 62.4 = 159.648 lbf/ft3
Rounding to the nearest one decimal place, the specific weight of the fluid is 159.6 lbf/ft3.
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