The brightest bulb has the lowest resistance and draws the most current.
What happens if a battery is linked in series with two bulbs?The bulb uses four times the power of a single battery when two batteries are connected in series! In this configuration, increasing the voltage causes both the voltage drop across the resistor and the current through it to double. It will shine considerably brighter.
How does the number of bulbs influence the battery's current output?The resistance heightens. The resistance of a series circuit rises as more bulbs are added. What modifications are made to the circuit's current as additional bulbs are added? The current is reduced by raising the resistance.
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A warehouse worker pushed a cart that has a mass of 4.50 kg to the top of an inclined plane with a coefficient
of friction of .45 and at an angle of 30 degrees with the floor. Initially, the cart was 0.670 m above the floor.
How much work does he do getting the cart to the top of the incline 2.4 m above the floor?
Work to be done getting the cart to the top of the incline 2.4 m above the floor is 91.16 J.
What is work?Work is the product of the displacement's magnitude and the component of force acting in that direction.
frictional force = μ N = μ mg cos 30° = 0.45 × 4.50 × 9.8 × cos 30° N = 17.19 N.
Work to be done getting the cart to the top of the incline 2.4 m above the floor =
Work done against friction + work done against gravity
= 17.19 × (2.4-0.670) × sin30° J + 4.50 × 9.8 × (2.4-0.670) J
= 91.16 J.
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A juggler throws an orange vertically into the air at . How long does it take the orange to return to the juggler's hand
The juggler throws an orange vertically in the air. it will take the same time for descend as that of it will take the time for ascend.
A juggler throws an orange vertically into the air. The time of ascend and the time for descend is same because of the gravitational field acting on it. The gravitational field acting on it will be the same for the both time of flight as it goes upward and as it coming downward and it will act on it in the same way. Hence, we will see that the orange is taking the same time as it is going upward and then it is coming downward, it will not experience any other significant force rathe than the gravitational force. rest of the forces like the air friction goes cancelled out as it will not be made a significant part on the orange. the only force that is acting on it continuously is the gravitational force. so we can consider that the juggler throws an orange vertically in the air. it will take the same time as that of it will take the time for ascend.
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How much potential energy does a skater mass 60 kg at 8 meters high have
Answer:
given;
mass=60 kg
height= 8 m
acceleration due to gravity=9.8m/s
so;
potential energy=MGH
=60×8×9.8 Newton
=4704 newton
Answer:
it's 4704
Explanation:
because the formula of potential e eggy is mgh where gravity(g) is always 9.8 m/s , mass is 60 and h meters is 8
which process depends partly on the presence of short-lived radioactive elements whose rapid decay would have released enough heat to melt the interior of planets allowing the more dense materials to migrate to the center
This process depends on the presence of short-lived radioactive elements whose rapid decay released enough heat to melt the interior of planets.
What do you mean by elements?An element is a substance whose atoms all have the same number of protons: another way of saying this is that all atoms of a given element have the same number of protons. Elements are the simplest chemical forms and thus can not be broken down through chemical reactions.
WHAT IS elements and its types?The elements are classified as metal, non-metal, and metalloid. The extreme left side elements in the periodic table are metals, for example, sodium, calcium, caesium, etc. However, elements on the right side are generally referred to as non-metals, carbon, chlorine, oxygen, etc.
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If sparky starts with a velocity of 0 m/s and runs with a constant
acceleration of 0.75 m/s² for 8 seconds, what is Sparky's total
displacement in meters?
Answer:
0
Explanation:
if Sparkly was falling from somewhere then you coud multiply 0.75x 8, otherwise i think its displacement is 0
If someone is attempting to focus on multiple tasks at one time, it could be said that they have divided attention.Please select the best answer from the choices provided
T/F
what are the options?
How does ballistic stretching improve flexibility?
Ballistic stretching works muscles through a variety of motions to increase flexibility. Ballistic stretching before exercise prepares the muscles for high-impact action. Consequently.
A ballistic stretching is what?Ballistic Method It is the oldest technique for stretching exercises. This strategy employs quick movements. A joint or even a muscle can be stretched with only repetitive motions or activities around it. It is essential to warm up properly before beginning such a workout.
Ballistic stretching uses the velocity of a moving person or limb to push an object outside its inherent range of motion. You are "starting to warm up" or stretched by jumping into an extended posture and using your stretched muscles like a springtime to pull yourself out of it.
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If you find yourself approaching from the downwind side, you should use the distance from the incident to your maximum advantage or switch to wearing a(n) _________.
If you find yourself approaching from the downwind side, you should use the distance from the incident to your maximum advantage or switch to wearing a self-contained breathing apparatus (SCBA).
What is a self-contained breathing apparatus (SCBA)?The self-contаined breаthing аppаrаtus, or SCBА, is the foundаtionаl tool thаt provides the greаtest аmount of аirwаy protection from toxic gаs аnd hаrmful pаrticulаtes resulting from the fire. It’s essentiаl for modern firefighting аnd todаy’s complex fire grounds.
The term self-contаined meаns thаt the SCBА is not dependent on а remote supply of breаthing gаs (e.g., through а long hose). If designed for use under wаter, it is аlso known аs а Scubа set (self-contаined underwаter breаthing аppаrаtus). When not used underwаter, they аre sometimes cаlled industriаl breаthing sets. Unofficiаl nаmes include аir pаck, аir tаnk, oxygen cylinder or simply pаck, which аre mostly used in firefighting.
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HELP!!!!
My Science teacher is absolutely no help!!
2. A baseball pitcher throws a pitch at a speed of 90 mph. The baseball has a mass of 0.15 kg and a radius of 0.03 m. Calculate the angular momentum of the baseball.
The angular momentum of the baseball, given that the baseball has a mass of 0.15 kg and a radius of 0.03 m is 0.181 Kgm²/s
How do I determine the angular momentum?Angular momentum is simply defined as the product of mass, velocity and radius as shown by the following formula:
Angular momentum = mass × velocity × radius
With the above formula, we can obtain the angular momentum of the baseball as illustrated below:
The following data were obtained from the question:
Velocity = 90 mph = 90 × 0.447 = 40.23 m/sMass = 0.15 KilogramsRadius = 0.03 mAngular momentum =?Inputting the variables into the above formula, we have:
Angular momentum = mass × velocity × radius
Angular momentum = 0.15 × 40.23 × 0.03
Angular momentum = 0.181 Kgm²/s
Thus, from the above calculation, we can conclude that the angular momentum of the baseball is 0.181 Kgm²/s
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a bird is flying at a height oof 200m from the ground with a velocity of 90KMPH calculate its total energy
The total energy of the bird is 45.45 J.
What is the total energy of the bird?The total energy of the bird is calculated by applying the following equation as shown below.
E ( total ) = P.E + K.E
Where;
P.E is the potential energy of the birdK.E is the kinetic energy of the birdE ( total ) = mgh + ¹/₂ mv²
where;
m is the mass of the bird = 20 g = 0.02 kgh is the height of the bird = 200 mv is the velocity of the bird = 90 km/h = 25 m/sg is acceleration due to gravity = 9.8 m/s²The total energy of the bird is calculated as follows;
E ( tot ) = ( 0.02 x 9.8 x 200 ) + ¹/₂ (0.02)(25²)
E ( tot ) = 45.45 J
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The complete question is below;
a 20 g bird is flying at a height oof 200m from the ground with a velocity of 90KMPH calculate its total energy
A kicker punts a football from the very center of the field to the sideline 43 yards downfield. What is the net displacement of the ball
The net displacement of the ball is 50.25 yards.
Displacement refers to the distance between two positions along the movement path of an object, and the resultant distance between the initial and final positions is called the net displacement. Net displacement is the smallest distance between the initial and final points. Based on the given information, the distance d1 = 43 yards and with of the football field d2 = 52 yards. As the football is kicked from the very center of the field to the sideline, the two distances are perpendicular, the net displacement can be determined by Pythagoras theorem. Hence,
d = √(d1)^2 + (d2/2)^2
d = √(43)^2 + (52/2)^2
d = √(43)^2 + (26)^2
d = √2525 ≈ 50.25 yards
Note: The question is incomplete. The complete question is A kicker punts a football from the very center of the field to the sideline 43 yards downfield. What is the magnitude of the net displacement of the ball? (A football field is 52 yards wide.)
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Which of the following is a vector quantity?
O speed
O time
O force
O displacement
O temperature
O momentum
O velocity
O acceleration
According to the given information temperature and velocity of the following is a vector quantity
Is temperature a vector quantity?A vector quantity is one that just has magnitude, whereas a vector quantity has both orientation and magnitude. Given that it is direction-independent at a given position, heat is a scalar number.
Is the force of gravity a vector?Vectors include gravity and displacement. They possess both a value and a direction. The fact that gravity and displacement are pointing in the same direction in this instance allows us to derive a scalar energy from them (in this example, their direction are down and down, respectively).
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in the formula i=pat, which of the following would be representative of the 'a'?
I=affluence PAT's variable is denoted by the letter A. It indicates the population's average consumption for each individual.
What is represented by the IPAT equation?The model's equation, known as IPAT, connects sustainability outputs to three cause elements. The model's fundamental formula is represented by the letters, which are Impact = Population * Affluence * Technology.
The link between people and their environment is described by the IPAT equation.The IPAT formula was developed as a result of the discussion. According to this, human influence on the environment (I) is the sum of human population (P), human prosperity (A), and human technological impact (T), or I = PAT.
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Help, I have to deliver it tomorrow What do I have to do?
A state machine is graphically represented by a state diagram. It displays a behavioral model made up of states, transitions, and actions, together with the events that have an impact on these.
What is Intial model Diagram?Additionally, it's one of the 14 UMLs, or Unified Modeling Languages, that are employed for defining, modeling, building, and documenting software systems.
The two types of UML diagrams are structural and behavioral. While behavioral UML diagrams portray the dynamic changes inside a system, structural UML diagrams show the static framework of a system or process.
A state diagram is one kind of behavioral diagram, in case you hadn't guessed.
Therefore, A state machine is graphically represented by a state diagram. It displays a behavioral model made up of states, transitions, and actions, together with the events that have an impact on these.
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how is weight affected by buoyant force?
The buoyant force acting on the suspended object exactly equals the object's weight.
Explanation:
If the buoyant force is greater than the object's weight, the object will rise to the surface and float. If the buoyant force is less than the object's weight, the object will sink. If the buoyant force equals the object's weight, the object can remain suspended at its present depth.
What is the work done when 1 mole of a gas expands isothermally from 25 to 250 l at a constant pressure of 1 atm and a temperature of 300k?
"The work done when 1 mole of a gas expands isothermally from 25 L to 250 L at a constant pressure of 1 atm and a temperature of 300 K is -5744 J."
Given that,
Initial volume V₁ = 25 L
Final volume V₂ = 250 L
Number of moles n = 1
Temperature T = 300 K
We know that, Gas constant R = 8.314 J mol⁻¹ K⁻¹
W = -nRT ln( V₂/V₁)
When the values are entered into the formula, we have
⇒ -1 × 8.314 × 300 × ln(250/25) = -5744 J
Thus, the work done is calculated to be -5744 J.
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What will be the work done when 1 mole of a gas expands isothermally from 50 Litre to?
The work done when one mole of a gas expands isothermally from 15 L to 50 L against a constant pressure of 1 atm at 25 °C is -718 cal.
As we know that, work done in isothermal expansion is given as
W = -n RT ln(V₂/V₁) = - 2.303 n RT log(V₂/V₁)
Given,
Number of moles n = 1
Gas constant R = 2 cal
T is constant temperature associated with the process = 25 °C = (25 + 273)K = 298 K
Initial volume V₁ = 15 L
Final volume V₂ = 50 L
W = - 2.303 × 1 × 2 × 298 × log(50/15) = -1372.588 (log10 - log 3) = -1372.588 × 0.523 = -717.86 ≈ -718 cal
Thus, the work done will be -718 cal.
The given question is incomplete. The complete question is ' What will be the work done when one mole of a gas expands isothermally from 15 L to 50 L against a constant pressure of 1 atm at 25 °C ?'
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An isolated charged point particle produces an electric field with magnitude e at the distance 2m from it. At the distance 1m from the particle the magnitude of the field is:.
While the electric field caused by a dipole changes inversely with the cube of the distance, the electric field caused by an isolated point charge changes inversely with the square of the distance.
Where is an isolated evenly charged object's electric field?The electric field strength is zero throughout the whole cavity of a spherically charged, isolated shell. The length of the electric field is endlessly long and uniformly charged inside a cylindrical shell that is separated from the outside world.
The size of the electric field produced by a point charge Q is determined by this equation. The distance r in the denominator is the separation between the point of interest and the point charge, Q, or the centre of a spherical charge.
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For each scenario, explain what distribution would be best to use and why. b. Airplane engines will fail when in flight with probability p. We are interested in computing the probability of at most 1 engine among the 6 failing on the plane.
CDF distribution will be used, Using Binomial Random variable, this problem can be solved.
The cumulative distribution function of a real-valued random variable X, or simply the distribution function of X, assessed at x, is the likelihood that X will take a value less than or equal to x in probability theory and statistics.
The PDF is the likelihood that a random variable, let's say X, would take a value exactly equal to x, while the CDF is the likelihood that a random variable will have a value less than or equal to x.
The cumulative distribution function (cdf), which is sometimes abbreviated as F(x), provides the likelihood that the random variable X is less than or equal to x. The function defined by F(x)=P[Xx] is the cumulative distribution function of the random variable X.
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What is the purpose of a chronometer?
A chronometer is a precision timekeeping device used to measure time intervals and to keep track of the time of day. Chronometers are often used in navigation to determine a ship's longitude, and in astronomy to measure the times of astronomical phenomena.
The Importance of Chronometers for Navigation and AstronomyThe chronometer is a precision timekeeping device which has been essential to the fields of navigation and astronomy for centuries. By measuring time intervals with accuracy and keeping track of the time of day, chronometers have enabled the advancement of these fields in many ways.
In navigation, chronometers are used to determine a ship’s longitude. By comparing the local time at the ship’s current location to the local time at a known location, navigators can calculate their longitude. This has been a major factor in the development of maritime navigation, and has enabled ships to travel long distances with greater accuracy and safety.
In astronomy, chronometers are used to measure the times of astronomical phenomena. Astronomers use chronometers to measure the exact times of eclipses, transits, occultations, and many other celestial events. This helps them to make predictions about the movements of celestial bodies and to observe their behavior.
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A sphere and a cylinder have the same radius and height. the volume of the cylinder is 50 feet cubed. a cylinder with height h and radius r. a cylinder with height h and radius r. what is the volume of the sphere? startfraction 50 over 3 endfraction feet cubed startfraction 100 over 3 endfraction feet cubed 75 feet cubed 100 feet cubed
The volume of such sphere is 100/3 cubic feet, according to the provided declaration.
A circle or a sphere?A hemisphere is a three-dimensional object, whereas a rectangle is a two-dimensional figure. In a sphere, all the spots are equally spaced from the center along one of the axes, unlike in a circle where all points are equally spaced from the center along a plane.
If you look at the sphere in this instance, the height is equal to double the radius.
The volume of something like a sphere may be calculated using the formula πr²h. Basically, the height is merely 2r. The modified formula is now πr²2r = 2πr³.
2πr³ = 50
πr³ = 25
r³ = 7.957747155
r = [tex]\sqrt[3]{7.957747155}}[/tex]
r = 1.99
Now that we know how big the radius is, we can calculate the sphere's volume.
= (4 / 3)πr³
= (4/3)π
= (4/3)π * 7.957747155
= (4/3) * π * (25 / π)
= (4/3) * 25
= 100/3 cubic feet.
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The complete question is-
A sphere and a cylinder have the same radius and height. The volume of the cylinder is 50 feet cubed. A cylinder with height h and radius r. A cylinder with height h and radius r. What is the volume of the sphere? StartFraction 50 Over 3 EndFraction feet cubed StartFraction 100 Over 3 EndFraction feet cubed 75 feet cubed 100 feet cubed
A convex mirror has a focal length of 21.0 cm. Determine the object location for which the image will be one-half as tall as the object.
According to the given statement the location of the object needs to be in -21cm
The ratio of the image distance to the object distance is also known as magnification.
Convex mirrors are curved mirrors with reflective surfaces that protrude in the direction of the light source.
The magnification is given by,
m = -(v/u)
As given,
1/2 = -(v/u)
or, 1/v = -(2/u) [1]
For convex mirror,
1/v + 1/u = 1/f
Given, f = 21
- 2/u + 1/u = 1/21 [from 1]
or, u = -21
Therefore, according to the given statement the location of the object needs to be in -21cm
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A convex mirror has a focal length of 21.0 cm. The location of the object needs to be in -21cm.
A convex mirror has a focal length of 21.0 cm. The location of the object needs to be in -21cm. The ratio of the image distance to the object distance is also known as magnification. Convex mirrors are curved mirrors with reflective surfaces that protrude in the direction of the light source. Therefore, according to the given statement the location of the object needs to be in -21cm. Convex mirrors are the mirrors that use to reflect the surface in a more better way than the concave mirror. Convex mirror accumulate the light at one place and it generates more power by collecting all the light rays in the one place and use it all in any of the work. When we accumulate the light rays and use it for anything, it will made the power more. Hence, we can see that a convex mirror has a focal length of 21.0 cm. The location of the object needs to be in -21cm.
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You have an object that needs to follow a specific motion path including curves straight lines.
You can draw a specified path or a custom path using the animation.
Describe an animation.A specific issue or idea is illustrated in animation to help the audience better grasp it. Animation is a method for making still photos look to be in motion. On transparent celluloid sheets, images are physically painted or drawn, and subsequently the visuals are captured and filmed in traditional animation. After the motion is finished, a system can track it thanks to a custom path.
As a result, the animation enables you to create bespoke paths by drawing specified paths.
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The pressure created by any force is calculated by multiplying the total force by the total area.
Pressure is calculated by dividing the force acting on a surface by the entire area over which it is acting.
How is total pressure calculated?The partial pressures of the component gases are added to determine the overall pressure of the gas combination. Ptot = "Pi" = P1 + P2 + P3... ntot = "ni" = the total number of moles in the gas mixture.
Pressure (P=FA P = F A) is equal to force divided by area. According to the equation, pressure is inversely related to area but directly related to force. Pressure rises at a constant area as the force exerted increases in strength.
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Your friend tells you that last night, they saw Mars high in the sky at midnight. You conclude that
A) Mars must be in retrograde.
B) your friend must be mistaken: Mars can never be seen at midnight.
C) Mars must be at its farthest distance from the Earth.
D) Mars must be at its closest distance from the Sun.
When your friend tells you that last night, they saw Mars high in the sky at midnight, you conclude that A) Mars must be in retrograde.
When your friend tells you they saw Mars high in the sky at midnight, you may be surprised to learn that this could be a sign that Mars is in retrograde. Retrograde is a phenomenon when a planet appears to move backward in its orbit.
Although it looks like the planet is moving in the opposite direction, it is actually an optical illusion caused by the relative positions of Earth and the planet in their orbital paths.
With Mars in retrograde, it is believed that the planet's energy affects us differently and can have an impact on our lives. So, if you see Mars high in the sky at midnight, it could be a sign that it is in retrograde.
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A 0.250 kg block resting on a frictionless horizontal surface is attached to a spring having force constant 83.8 N/m as in figure P13.16. A horizontal force F causes the spring to stretch a distance of 5.46 cm from its equilibrium position.
(a) Find the value of F.
(b) What is the total energy stored in the system when the spring is stretched?
(c) Find the magnitude of the acceleration of the block immediately after the applied force is removed.
(d) Find the speed of the block when it first reaches the equilibrium position.
(e) If the surface is not frictionless but the block still reaches the equilibrium position, how would your answer to part (d) change? What other information would you need to know to answer?
The force F acting on the surface is 4.57 N. The total energy stored in the system when the spring is stretched is 0.132 J. The magnitude of acceleration on the spring is 18 m/s². The speed of the block when reaches equilibrium position is 1.03 m/s.
What is force constant?The force acting on a stretchable material is directly proportional to the displacement of the object from the equilibrium position x.
Thus, F = k x.
Where, k is called the force constant or spring constant.
Given that, the displacement = 5.46 cm = 0.054 m
force constant = 83.8 N/m
Force = 83.8 N/m × 0.054 m = 4.57 N
The total energy stored on the system is equal to its potential energy mgh
m = 0.250 kg
Then p = 0.250 kg × 0.054 m× 9.8 m/s² = 0.132 J
Acceleration = force/ mass
= 4.57 N/0.250 = 18 m/s²
At the equilibrium position, the kinetic energy of stretching equal to the potential energy stored on it.
hence, speed v = √(2gh)
v = √2× 9.8 m/s² ×0.054m = 1.03 m/s.
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How do collisions between molecules transfer energy from a system of reacting substances to its surroundings
Answer:
They cause heat to flow from the system to the surroundings.
A car is moving with a constant speed of 20. Meters per second. What total distance does the car travel in 2. 0 minutes?.
The total distance the car moved in 2 minutes is 2400 meters.
To calculate the total distance travelled by the car in 2 minutes, we need to first convert the time from minutes to seconds. There are 60 seconds in one minute, so 2 minutes is equal to,
2 * 60 = 120 seconds.
Next, we can use the formula for distance travelled:
d = r * t
Where d is the distance travelled, r is the rate (speed) of travel, and t is the time.
Plugging in the values we have, we get:
d = 20 m/s * 120 s = 2400 m
Therefore, the total distance travelled by the car in 2.0 minutes is 2400 meters.
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A cue ball weighing 0.350 kg accelerates from the rest with a magnitude of 5.21m/s2 and travels 175cm where it strikes another billiard ball what is the force it will strike the other ball with? convert units
Answer:
To find the force with which the cue ball will strike the other ball, you will need to use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration.
You can calculate the force using the following formula:
Force = mass * acceleration
Plugging in the values from your question, we get:
Force = 0.350 kg * 5.21 m/s^2 = 1.82 N
To convert the distance the cue ball travels from centimeters to meters, divide the distance by 100. So 175 cm is equal to 1.75 m.
I hope this helps!
How do you calculate work of expansion?
Calculating the Amount of Expansion Work Associated with a Volume Change at Constant Pressure.
Using the equation: ΔV = V(initial) - V(final), we can find ΔV, the change in volume in cubic meters, m³.
Note: Converting the volumes to cubic meters could be necessary.
P, the restricting pressure, should be calculated in Pascals.
Use the equation to determine the amount of work required: w = -PΔV
Note: If the volume is measured in m³, and the pressure is measured in Pascals, the work will be measured in Joules. A system's work has a negative value as it gets bigger. A system's work (as it gets smaller) has a positive value.
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We can find the work of expansion by finding the difference between the final dimensions of the piece and the initial dimensions of the object. The work of expansion can be found out by the difference in dimensions.
We can find the work of expansion by finding the difference between the final dimensions of the piece and the initial dimensions of the object. The work of expansion can be found out by the difference in dimensions. Using the equation: ΔV = V(initial) - V(final), we can find ΔV, the change in volume in cubic meters, m³. The expansion of anything or metal takes place when we inflate it or it got heat on a higher scale, then the object inflate and it will be expanded by some extent. The difference can be find out if we notice the initial dimensions and final dimensions of the object. Then we subtract the dimensions and we will get our work of expansion just by noticing the initial and final readings of any object and then by calculating we can find our desired answer.
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