a carbon-detonation supernova starts out as a white dwarf in a close binary system. (True or Fasle)
Answers
False. A carbon-detonation supernova occurs in a single carbon-oxygen white dwarf star, not in a close binary system. The white dwarf undergoes a thermonuclear explosion due to the ignition of carbon fusion, leading to a supernova.
A carbon-detonation supernova does not start out as a white dwarf in a close binary system. Instead, it originates from a single carbon-oxygen white dwarf star. In a close binary system, where two stars orbit each other closely, a different type of supernova known as a Type Ia supernova occurs. In this case, the white dwarf accretes matter from its companion star until it reaches a critical mass, triggering a runaway nuclear fusion reaction and resulting in a supernova explosion. On the other hand, a carbon-detonation supernova is caused by the ignition of carbon fusion within a single white dwarf, without the involvement of a companion star.
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Related Questions
WF4-358 is a white dwarf in the globular cluster NGC 6397. This star's spectrum is highlighted with the red box. Notice that wavelength is tracked on the X axis and intensity is tracked on the Y axis. For this activity, we will be paying attention to the wavelengths that have the highest intensity. As you progress throughout the steps of this activity, you will be filling in this table:
Wavelength Suspected Element Frequency Energy
1.
2.
3.
Step 1: Study the Spectrum
Familiarize yourself with the spectral signature of this star, which shows which wavelengths are absorbed at which intensities. After studying the spectrum, notice which wavelengths ranges have the highest intensity (in other words, notice where the black line under WF4-358 reaches a high point and note which wavelengths ranges that point is associated with). Write down three wavelengths that have the highest intensity in WF4-358. Not that because of the scale of this particular graph, you likely won't be able to tell an exact wavelength. Instead, make the best guess that you can with the information you have. Fill in the first column (Wavelengths) of the table with your answer.
Step 2: Determine Elements
After documenting three wavelengths, refer to the diagram below to investigate which elements may be associated with those wavelengths.
For each of the three peaks in the spectrum you noted, make a guess about which element that peak represents. You will take the wavelength you noted in Step 1, and finding that wavelength on the diagram. For example, if you thought that a wavelength of 475 nm was a peak, you would find that wavelength on the chart and note that Argon might be the element represented by that peak. Repeat for all three peaks. Fill the second column (Suspected Element) of the table with your answers.
Step 3: Find Frequencies
Do some online research to find the frequencies of the three wavelengths you identified. Fill in the third column (Frequency) of the table with your answers.
Step 4: Calculate Energy
Use Planck's Equation to calculate the energy of a photon of light at each of the wavelengths you identified. Planck's Equation goes as follows:
E = hv
In this equation:
E = energy, and is unknown. This is what we are solving for.
h = Planck's constant (6.626 x 10^-34 joule-seconds)
v = frequency
Fill in the last column (Energy) of the table with your answers.
Step 5: Reflection Questions)
Would you expect the spectrum of a blackbody radiator to have peaks and valleys like the spectrum of WF4-358? Why or why not? Define blackbody radiators in your answer.
Pick one element from the chart you made. How might you expect its wavelength to change if it goes from traveling through Earth's atmosphere to traveling through water in the ocean?
Submit the following in one word processing document:
The table you completed in Steps 1-4
The answers to the reflection questions from Step 5
Answers
The highest points of intensity for WF4-358 include 390nm, 402nm, and 420nm (all estimated by x-axis locations in 10 nm increments).
What is wavelength?Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire. In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.
These are the closest approximate wavelengths along the x-axis that correspond to the highest intensities along the y-axis for WF4-358.
The highest points of intensity for WF4-358 include 390nm, 402nm, and 420nm (all estimated by x-axis locations in 10 nm increments).
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Earthquakes generate waves that go through the whole________, We call these ______waves.
a. body of the earth, body waves
b. core of the earth, S-waves
c. mantle of the earth, mantle waves
d. covering of the earth, wild waves
Answers
Answer:
a. body of the earth, body waves
Explanation:
In which direction does the frictional force act on the cube? A) upwards B) downwards C)in all the directions D) side to side
Answers
Answer:
D) side to side
Explanation:
The frictional force act on the cube in the side to side direction. The friction force acts opposite to the direction of the motion of an object which reduces its speed or sometimes prevent it from moving from one place to another. In order to reduce the force of friction, the body has to move by rolling instead of sliding and use of lubrication on the surface on which the object moves.
The projectile launcher shown below will give the object on the right an initial horizontal speed of 5.9 m/s. While the other object will be dropped with no initial speed. The objects are initially 179 cm above the ground and separated by 142 cm. What will be the difference in the landing locations of the two objects?
Answers
Answer:
104.3 cm or 179.7
Explanation:
First find time that it takes for the object to hit the ground
\(\sqrt{(2H)/g} -> \sqrt{(2 x 179)/ 9.8} = 6.04s\\\)*
Then find xf of projectile \(xf= 5.9(6.04) = 37.7\\\\\)
not 100% sure if the projectile is going away from the object or towards it but you either do 142- 37.7 or 142+37.7
hope that helps
"217 cm" would be the difference throughout the landing locations of the two objects.
Given:
Initial horizontal speed,
v = 5.9 m/sHeight,
h = 179 cmBy applying equation of motion, we get
→ \(S = ut+\frac{1}{2}at^2\)
By substituting the values, we get
→ \(179\times 10^{-2}=0+\frac{1}{2}\times 9.8\times t^2\)
→ \(3.58= 9.8t^2\)
\(t^2 =\frac{3.58}{9.8}\)
\(t = \sqrt{0.36531}\)
\(= 0.61 \ s\)
now,
The horizontal distance travelled by the first particle will be:
→ \(d = v\times t\)
\(= 5.9\times 0.61\)
\(= 3.59 \ m\)
or,
\(= 359 \ cm\)
hence,
The distance between particle will be:
= \(d -142\)
= \(359-142\)
= \(217 \ cm\)
Thus the above approach is right.
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What kind of things would Physics be able to answer? I. How does a hair dryer work? II. How does a lightning bolt form? III. How far will a cannon ball fly through the air? IV. What happens to a person after they die? I and III I, II, and III I only I, II, IV
Answers
Answer:
physics answers everything to understand biology you need to understand chemistry which is connected to physics which is connected to mechanics like fluid mechanics or quantum mechanics which is connected to math and all of that is science not particularly physics but physics can answer all of the questions you asked and more.
Explanation:
Answer:
sorry im only in fifth grade
Explanation:
Can a convex mirror produce both converging and diverging rays?
Answers
Answer:
convex mirrors.
Explanation:
Convex mirrors diverge light rays and, thus, have a negative focal length. A ray approaching a concave converging mirror parallel to its axis is reflected through the focal point F of the mirror on the same side.
A soda can rolls off a table top and lands 0. 225 m away 0. 416 s later. How tall was the table
Answers
According to the given statement ,we can use the equations of motion and the concept of free fall. Therefore, the height of the table is approximately 0.085 meters.
To determine the height of the table, we can use the equations of motion and the concept of free fall.
First, let's identify the known values:
- The distance the soda can rolled horizontally, 0.225 m.
- The time it took for the soda can to land, 0.416 s.
- The acceleration due to gravity, which is approximately 9.8 m/s².
Since the can was rolling horizontally, we can ignore any initial vertical velocity and consider only the vertical motion of the can.
Using the equation of motion for vertical displacement:
s = ut + (1/2)at²
Where:
- s is the vertical displacement
- u is the initial vertical velocity (which is zero in this case)
- t is the time
- a is the acceleration due to gravity
In this case, we want to find the height of the table, which is the vertical displacement. So we can rearrange the equation to solve for s:
s = (1/2)at²
Plugging in the values:
s = (1/2) * 9.8 m/s² * (0.416 s)²
Simplifying:
s = (1/2) * 9.8 m/s² * 0.173056 s²
s = 0.085 m
Therefore, the height of the table is approximately 0.085 meters.
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WHICH ONE IS CORRECT???
Answers
Answer:
A
Explanation:
Answer:
According to Pascals law, THE PRESSURE EXERTED TO A CONFINED LIQUID IS TRANSMITTED EQUALLY AND UNDIMINISHED IN ALL DIRECTIONS THROUGHOUT THE MASS OF THE LIQUID--Blaise Pascal
so the pressure at A2 must be equal to A1
buy however the F1 will be less than F2 since:
P1=F1/A1 and P2=F2/F1
P1=P2 according to Pascal
so, F1/A1=F2/A2
with less amount of force at P1 THE force gets multiplied.
Therefore it's obvious that option A and B is wrong. I can't see option C properly.
but, you are going to have this option.
C.F1>F2
so the option with F1>F2 is correct
PLEASE MARK BRAINLIEST
an electromagnetic wave has an electric field given by: e = i(225 v/m)sin[(0.077m-1 )z – (2.3 x 107 rad/s)t] what are the wavelength and frequency of the wave?
Answers
The wavelength (λ) of the electromagnetic wave is approximately 81.56 meters, and its frequency (f) is approximately 3.66 x 10^6 Hz.
e = i(225 V/m)sin[(0.077 m^(-1))z - (2.3 x 10^7 rad/s)t]
The equation contains two important terms: (0.077 m^(-1)) and (2.3 x 10^7 rad/s).
1. Wavelength (λ): The term (0.077 m^(-1)) represents the wave number (k), which is related to the wavelength as follows: k = 2π/λ. To find the wavelength, we can rearrange the formula:
λ = 2π/k = 2π/(0.077 m^(-1)) ≈ 81.56 m
2. Frequency (f): The term (2.3 x 10^7 rad/s) represents the angular frequency (ω), which is related to the frequency as follows: ω = 2πf. To find the frequency, we can rearrange the formula:
f = ω/(2π) = (2.3 x 10^7 rad/s)/(2π) ≈ 3.66 x 10^6 Hz
So, the wavelength (λ) of the electromagnetic wave is approximately 81.56 meters, and its frequency (f) is approximately 3.66 x 10^6 Hz.
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HELP YALL!!
Which nucleus completes the following equation?
Answers
Answer:
B
Explanation:
Chlorine institute
16+1=17
CI has 17 in the bottom.
Answer:C
Explanation:
A balloon weighing 15 grams is filled with helium (density = 0.180 kg/m³) to a volume of 6.0 m³ and attached to a spring of force constant 120 N/m. It Determine the extension of the spring, L, when the balloon is in equilibrium. The density of air is 1.29 kg/m³.
Answers
The extension of the spring, L, when the balloon is in equilibrium is 0.63 m.
Weight of the balloon = 15 g = 0.015 kg
Density of helium = 0.180 kg/m³
Volume of balloon = 6.0 m³
Force constant of spring, k = 120 N/m
Density of air = 1.29 kg/m³
Extension of the spring, L, when the balloon is in equilibrium using Hooke's law, F = kx
Let's first find the buoyancy force on the balloon when it is filled with helium and determine its weight. Buoyancy force = weight of the air displaced by the balloon
Buoyancy force = Density of air × volume of the balloon × gravitational acceleration = 1.29 kg/m³ × 6.0 m³ × 9.8 m/s² = 75.768 N
Weight of the balloon = Mass of the balloon × gravitational acceleration= 0.015 kg × 9.8 m/s² = 0.147 N
Therefore, the net force acting on the balloon when it is filled with helium is given by
Net force = Buoyancy force - Weight of balloon = 75.768 N - 0.147 N = 75.621 N
This net force acts upward on the balloon.
Now, using Hooke's law, we can determine the extension of the spring, L, when the balloon is in equilibrium.
F = kx, where F is the net force acting on the balloon, and k is the force constant of the spring.
Substituting the values of F and k, we get75.621 N = 120 N/m × L
Therefore,
L = 75.621 N / 120 N/m = 0.63 m
Therefore, the extension of the spring, L, when the balloon is in equilibrium is 0.63 m.
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When removing a wool sweater, a static discharge of 7.00 µc dissipates 1.00 ✕ 10−3 j of energy. what voltage (in v) was involved?
Answers
The required voltage while a static discharge dissipates certain amount of energy is calculated to be 142.85 V.
The voltage is also defined as the ratio or the fraction of the energy measured in joules to the per-unit charge measured in Coulomb.
The energy is given as 1× 10⁻³ J.
The charge q is given as q = 7 µc = 7× 10⁻⁶ c
The expression for energy is given as,
E = q v
where, E is energy
v is voltage
q is charge
Making v as subject, we have,
v = E/q = (1× 10⁻³)/(7× 10⁻⁶) = 1000/7 = 142.85 V
Thus, the voltage in volts is calculated as 142.85 V.
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Which is not a general adaptation?
OA. Camouflage.
OB. Legs for walking.
OC. Wings for flying.
D. Streamlined shape to reduce friction.
Answers
Camouflage is not a general adaptation.
What is adaptation?Adaptation refers to the evolutionary process through which organisms develop certain traits or characteristics that allow them to survive and reproduce in their environment. These traits can be physical, behavioral, or physiological and are shaped by natural selection.
Adaptations can be both structural, such as the long neck of a giraffe, or functional, such as the ability of some plants to tolerate drought conditions. They can also be behavioral, such as the way in which some birds build their nests, or physiological, such as the ability of some animals to regulate their body temperature in extreme environments.
Camouflage is a specific adaptation. It refers to an animal's ability to change the color or pattern of its body to blend in with its environment. It does not have the same universal application as other general adaptations, such as streamlined shapes to reduce friction or legs for walking.
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The diagram shows a box in the periodic table. 15 P Phosphorus 31.0 What is the atomic number of the element shown? A. 46.0 B. 15 C. 31.0 D. 30
Answers
Answer:
b 15
Explanation:
the atomic number is the number of the element
At what height from the surface of the earth does the value of acceleration due to gravity be 2.45m/s square where the radius of the earth is 6400 km.
Answers
Answer: 6,277,647m
Explanation:
Radius of Earth = 6400km
To calculate the gravitational acceleration of a planet, we use the following formula:
g = mG/r^2
Gravitational acceleration is equal to the mass of the planet multiplied by the gravitational constant all divided by the radius of the planet squared.
We already know what the gravitational acceleration will be, 2.45m/s^2.
So, 2.45m/s^2 = mG/r^2
the mass of the earth is equal to 5.9*10^24.
And the gravitational constant is equal to 6.67408 * 10^-11.
We don't know the radius though.
2.45m/s^2 = 5.9*10^24 * 6.67408 * 10^-11 divided by r^2
2.45m/s^2 = 3.93 * 10^14 divide by r^2
Now, we can cross-multiply.
2.45m/s^2 * r^2 = 3.93 * 10^14
divide r^2 from both sides.
r^2 = 3.93 * 10^14 divided by 2.45m/s^2
r^2 = 1.6*10^14.
Now, take the square root of both sides.
r = 12,677,647 meters from the center of the Earth.
To calculate the height from the surface of the Earth, we need to subtract r by the Earth's radius.
That will be 12,677,647-6.400.000m = 6,277,647m from the surface of Earth.
based on the passage, of the following, which would be the best example of mass movements initiated by one or a few magnets that would unexpectedly sweep across the entire world
Answers
Magnetic pole reversals are an example of mass movements initiated by one or a few magnets that unexpectedly sweep across the entire world. These reversals have occurred throughout Earth's history and have global impacts on various Earth systems.
Based on the passage, the best example of mass movements initiated by one or a few magnets that would unexpectedly sweep across the entire world would be the phenomenon of magnetic pole reversals.
During magnetic pole reversals, the Earth's magnetic field undergoes a complete flip, where the north and south magnetic poles exchange their positions. This process occurs over thousands of years and has happened multiple times throughout Earth's history.
When a magnetic pole reversal occurs, the effects are not limited to a specific region but are spread globally. The magnetic field protects the Earth from harmful solar radiation, and during a pole reversal, this protection can weaken or even disappear temporarily. As a result, the reversal can have significant consequences for various aspects of the Earth's system, including climate patterns, animal migration, and navigation systems.
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Given an electron beam whose electrons have kinetic energy of 7.00 keV , what is the minimum wavelength λ_min of light radiated by such beam directed head-on into a lead wall?
Answers
The minimum wavelength of light radiated by the electron beam is approximately 1.1162 x 10^-10 meters.
The minimum wavelength of light radiated by an electron beam can be determined using the concept of the de Broglie wavelength.
According to de Broglie's hypothesis, particles such as electrons exhibit wave-like properties, and their wavelength is inversely proportional to their momentum.
The momentum of an electron can be calculated using the following equation:
p = √(2mE)
where p is the momentum, m is the mass of the electron, and E is the kinetic energy of the electron.
The equation for the de Broglie wavelength is:
λ = h / p
where h is Planck's constant and is the wavelength.
In this case, we are given that the kinetic energy of the electrons is 7.00 keV. We can convert this to joules by multiplying by the conversion factor 1.602 x 10^-19 J/keV.
E = 7.00 keV * 1.602 x 10^-19 J/keV ≈ 1.1224 x 10^-16 J
An electron has a mass of roughly 9.10938356 x 10-31 kg.
Using the equation for momentum, we find:
p = √(2 * 9.10938356 x 10^-31 kg * 1.1224 x 10^-16 J) ≈ 5.9367 x 10^-24 kg·m/s
Finally, we can calculate the minimum wavelength using the de Broglie wavelength equation:
λ = h / p = 6.62607015 x 10^-34 J·s / (5.9367 x 10^-24 kg·m/s) ≈ 1.1162 x 10^-10 m
Therefore, the minimum wavelength of light radiated by the electron beam is approximately 1.1162 x 10^-10 meters.
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NO LINKS? ONLY ANSWER IF U NEED THE ANSWER Doesn't change period
Period, frequency or Amplitude
Answers
Explanation:
Peroid-Time taken to make 1 oscillation
Frequence-Number of oscillation made in 1 second
Amplitude-The maximum distance from a tough and crust
how did clair patterson determine the age of earth
Answers
Answer:
Patterson isolated lead from fragments of a meteorite that had struck Earth thousands of years ago, and determined the age of the fragments by analyzing proportions of the lead isotopes. The meteorite is assumed to have been formed at the same time as the rest of the solar system, including Earth
Explanation:
What does dalton theory have in common with democritus
Answers
Answer:
Democritus and Dalton has similar ideas about the atom, but Democritus based his theory more on reason than science. ... His ideas were similar to those of Democrites in that he believed that atoms were indivisible and that atoms of one substance are all alike but are different from atoms of another substance.
Explanation:
PLS MAKE ME AS BRAINLIST
Answer:
Democritus and Dalton has similar ideas about the atom, but Democritus based his theory more on reason than science. ... His ideas were similar to those of Democrites in that he believed that atoms were indivisible and that atoms of one substance are all alike but are different from atoms of another substance.
Explanation:
In which phase is the substance when its temperature is 250 degrees Celsius?
O Solid
O Liquid
Gas
Answers
Answer:
o liquid
Explanation:
liquid fom because it's is liuid41. You are driving at night on a dimly lit street and using high beams. You should dim your lights when you are within 500 feet of: A. A vehicle approaching you from behind B. An oncoming vehicle C. A sharp curve or hill
Answers
When driving on a dimly lit street at night using high beams, it is important to dim your lights when you are within 500 feet of an oncoming vehicle.The purpose of dimming the high beams while driving is to reduce the intensity of the lights to avoid blinding other drivers on the road.
In situations where there are no street lights or lighting is poor, high beams may be necessary to provide a wider field of vision.Dimming your lights when within 500 feet of an oncoming vehicle is crucial because it helps to avoid distracting and blinding other drivers on the road. When driving at night, it's important to prioritize safety and avoid causing harm to other road users.Driving with high beams that are too bright at close range can cause other drivers to have impaired vision and temporary blindness, which may lead to accidents.
By reducing the intensity of the light to low beams, drivers can continue to see the road ahead without compromising the safety of other road users.In conclusion, when driving at night, it is essential to dim your lights when you are within 500 feet of an oncoming vehicle to ensure the safety of everyone on the road.
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A stationary 3-kg hard steel ball is hit head-on by a 1-kg hard steel ball moving to the right at 4 m/s. After the collision, the 3-kg ball moves to the right at 2 m/s. What is the velocity (speed and direction) of the 1-kg ball after the collision?
Answers
From conservation of momentum we have that:
\(\begin{gathered} 1(4)+3(0)=1v+3(2) \\ 4=v+6 \\ v=4-6 \\ v=-2 \end{gathered}\)Therefore the velocity of the 1 kg ball after the collision is 2 m/s to the left.
1. There is a group of kids playing tee ball in front of your house. If the bat is 5kg traveling with a velocity
of 8m/s, with what velocity will the 1.5 kg ball travel after it is hit by the bat?
Answers
Answer: tug vi
Explanation:
Because
What determines the emission of electrons—the intensity or wavelength of laser light?.
Answers
The emission of electrons Wavelength of laser light.
The distance between two consecutive wave crests or troughs is known as the wavelength. The direction of the wave is used to measure it.
The distance between a wave's crests or troughs is called its wavelength (which may be an electromagnetic wave, a sound wave, or any other wave). The peak of a wave is called the crest, and its base is called the trough. The distance between the corresponding spots of two successive waves is known as the wavelength, which is a measurement of length. Two points or particles that are "corresponding points" are those that have finished the same fractions of their periodic motion and are in the same phase. The wavelength of transverse waves (waves whose tips oscillate at right angles to the direction of their progress)
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According to the Newton’s first law of motion , which of the following objects will change in motion
A. a biker on a smooth and level road , pedaling at a constant rate .
B. a train pulling on another train , each with the same amount of force .
C. a ball rolling across the floor with friction acting in the opposite direction.
D. A chair sitting on the floor with balanced forces acting in opposite directions.
Answers
Which value is equivalent to 178 centimeters?
Answers
Answer:
Explanation:
We don't know what you want the 178cm has to be equla to
Which statements about velocity are true?
1. The symbol for velocity is
2. For velocity, you must have a number, a unit, and a direction
3. To calculate velocity, divide the change in the distance by time
4. The SI units of velocity are m/s
Answers
Statements that are true about velocity are: 2. For velocity, you must have a number, a unit, and a direction and 4.The SI units of velocity are m/s.
What is velocity?Velocity is the rate at which displacement changes. Speed is a constant, but velocity is a vector quantity. It has both direction and magnitude, therefore this indicates. While seconds are the SI unit of time, meters are the SI unit of displacement. Meters per second will therefore be the SI units for velocity.
The direction speed of an item in motion as measure of the rate at which its location is changing as seen from certain point of view and as measured by specific unit of time is called velocity.
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An 8.5kg cat is running 1.8m/s. How much kinetic energy does it have?
Answers
Answer:
Im not sure if this is correct but it might be 15.3
Explanation:
8.5kg multiplied by 1.8 m/s is 15.3
Answer:
KE = 13.77 J
Explanation:
KE=1/2 mv^2
An object having a fixed emissivity of 0. 725 radiates heat at a rate of 10 w when it is at an absolute temperature t. If its temperature is doubled to 2t. At what rate will it now radiate?.
Answers
160 W rate it will radiate.
What, using an example, is absolute temperature?The Kelvin scale, where 0 represents absolute zero, is used to measure absolute temperature. The temperature at which matter's particles move the least and cannot cool down is known as the zero point (minimum energy)
What is the temperature's absolute value?The lowest energy state for a thermodynamic system is absolute zero. In terms of temperature, it is equivalent to 459.67 °F in Fahrenheit and 273.15 °C in Celsius.
Why is absolute temperature used?The temperature of an object on a scale where 0 is assumed to be absolute zero is known as its absolute temperature, also known as thermodynamic temperature. The Kelvin and Rankine scales measure absolute temperature.
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