Their final temperature is 247.84 K.
What is thermal equilibrium?
When two physical systems are linked by a channel permeable to heat, they are said to be in thermal equilibrium if there is no net transfer of thermal energy between them. The zeroth law of thermodynamics is seen during thermal equilibrium.
Given that: container 1 initially held 78.3 kg of liquid at a temperature of 271 K, and container 2 initially held 50.6 kg of the same liquid at a temperature of 212 K.
Let the final temperature be T.
As the materials of both container 1 and 2 is same and the comes thermal equilibrium,
78.3 (271-T) = 50.6 ( T - 212 )
(50.6 + 78.3) T = 78.3*271 + 50.6*212
T = 247.84 K.
Hence, the final temperature is 247.84 K.
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2. At 6:00 AM a hopital ued it cyclotron to make 1 milligram of the iotope fluorine-18 for ue a a diagnotic tool with it PET canner. The half-life of F-18 i 1. 8 hour. How much F-18 i left at 3:00 PM? At midnight? Should the hopital plan to make more F-18 the next morning?
Cyclotron to make 1 milligram of the isotope fluorine-18 for use a a diagnostic tool with it PET scanner. It seems that the hospital should plan to make more F-18 the next morning, as the amount remaining at midnight is very small.
The half-life of F-18 is 1.8 hours, so after 1.8 hours, half of the original amount of F-18 will remain. After 3.6 hours, a quarter of the original amount will remain, and so on.
At 3:00 PM (9 hours after the F-18 was made), the hospital will have
= 1/2^(9/1.8)
= 1/2^5
= 1/32
= approximately 0.03125 milligrams of F-18 remaining.
At midnight (18 hours after the F-18 was made), the hospital will have
= 1/2^(18/1.8)
= 1/2^10
= 1/1024
= approximately 0.0009765625 milligrams of F-18 remaining.
While using cyclotron, based on these calculations, it seems that the hospital should plan to make more F-18 the next morning, as the amount remaining at midnight is very small.
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At time t=0s , an object is moving to the right with a velocity v that can be modeled by the equation v=(4. 2 m/s)-(1. 4 m/s2)t. At what time, if any, does the object change its direction of motion?.
At 3 seconds, the object changes its direction of motion with the equation v = (4.2 m/s) - (1.4 m/s2)t.
The explanation describes the speed of an object and how this speed changes depending on time.
Equation of velocity
V = (4.2 m/s) - (1.4 m/s²)t
When an object changes its direction, it momentarily comes to rest at point B.
V = 0
0 = 4.2 - 1.4 t
t = 4.2 : 1.4 = 3 sec
3 sec after the object changes its direction.
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a block of mass m is released from rest and slides down an incline, as shown in the figure. the length d of the incline is 0.8 m and the angle of the incline, θ, is 37°. a graph of the speed v as a function of time t of the block as it descends the incline is shown. how could a student use the graph and the information provided to determine whether the block-earth system is an open system or a closed system?
The system is open, because there is a net force exerted on the block.
What are some instances of kinetic energy?An individual strolling, a taking off baseball, a piece tumbling from a table and a charged molecule in an electric field are instances of dynamic energy at work. An item that isn't moving has zero motor energy.
The energy an item has as a result of motion is known as kinetic energy. A force must be applied to an item in order to accelerate it. We must put forth effort in order to apply a force. After the job is finished, energy is transferred to the item, which then moves at a new, constant speed.
According to question:
On graphing free body diagram of the problem
There is a force = mgsin(37°)
So, the it is a open system.
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Which planet has an orbital eccentricity most like the orbital eccentricity of the moon?
The planet with an orbital eccentricity most like the orbital eccentricity of the Moon is Earth. The orbital eccentricity of a celestial body is a measure of how much its orbit deviates from a perfect circle. An orbital eccentricity of 0 represents a perfect circle, while an orbital eccentricity of 1 represents a parabolic orbit.
The orbital eccentricity of the Moon is approximately 0.0549, which is relatively small compared to other celestial bodies. The orbital eccentricity of Earth is also small, with a value of approximately 0.0167. This means that both the Moon and Earth have orbits that are relatively close to being circular.
In contrast, many other planets in the solar system have much larger orbital eccentricities. For example, Mars has an orbital eccentricity of 0.0935, while Mercury has an orbital eccentricity of 0.2056. The largest orbital eccentricity in the solar system belongs to Pluto, which has an orbital eccentricity of 0.2488.
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I don’t understand this
The toy does not approach the spring. Hence, option (A) is correct.
What is friction?The force preventing sliding against one another of solid surfaces, fluid layers, and material components is known as friction.
Mass of the car-toy: m = 2 kg.
Initial speed of the car-toy: v = 2 m/s.
Distance between the initial position of the car-toy and the spring: d = 3m.
Coefficient of friction: μ = 0.14
Hence, initial kinetic energy of the toy-car = mv²/2 = 2×(2)²/2 Joule = 4 Joule.
Frictional energy loss during approaching from initial position to the spring = μmg·d
= 0.14 × 2 kg × 9.8 m/s² × 3 m
= 8.232 Newton.
As, Frictional energy loss > initial kinetic energy; the toy does not approach the spring.
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A sports car has a mass of 1500 kg and accelerates at 5 m/s every second. What is the net force on the car?.
The needed force is therefore F=ma=15000.5=750 N. The car accelerates at 3 m/s2 and needed 4500 N of force to get to the destination 5 seconds after starting,
the car reaches a speed of 5 metres per second.
The sports car weighs 1500 kilogrammes.
The sports car's acceleration is equal to 5 m/s2.
Therefore, let F be the force acting upon it.
The rate of doing labour is called power. Work is the result of the applied force and the distance travelled along the force's direction by the moving body accelerates.
The formula for Newton's second law must be used to compute the force, and the specified values must be entered into the formula. So let's get going. Car weight is 1500 kg. Speed is equal to 10 m/s2.
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How many patterns are there in rural settlement?
Settlements can be categorized as either compact, linear, or circular. Based on each area's population density.
What are the types of pattern in rural settlement ?Compact Rural Communities:
This style contains a central area where a number of public structures, including the community hall, bank, shopping mall, school, and church, are situated.Rural Linear Settlements:
Buildings along a road, river, or seashore make up the linear form. The agricultural land extends behind the structures, with the exception of mountainous areas.Circular Rural Communities:
A central open area is surrounded by structures in this form. These communities go by several names, including a (Germany), Circulades and Bastides (France), or Kraal (Africa). Although there are no modern historical accounts of the creation of these circular communities, a consensus has developed recently.For more information on rural settlements kindly visit to
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one object is traveling northeast with a momentum of 12 kg-m/s, while a second object is traveling southwest on the same path as the first object with a momentum of 4 kg-m/s. when the two objects collide, they stick together. what is the momentum after their collision?(1 point)
The objects collide together where one object is exerting force on the other in equal and opposite magnitude. When they stuck together, their final momentum will be the sum of initial of momentum of each object. Thus, the final momentum after collision will be 16 kg m/s.
What is momentum?Momentum is a physical quantity which is equal to the product of mass and velocity of the object. Hence, for a stationary body, the there will be no momentum.
During collision, the total momentum is conserved. Thus, the sum of initial momentum of the colliding objects is equal to the final momentum of the combined mass.
The momentum of object 1 = 12 Kg m/s
object 2 = 4 kg m/s.
Thus, total initial momentum = final momentum = 12 + 4 = 16 Kg m/s.
Therefore, the final momentum after collision is 16 Kg m/s.
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a solenoid 4.00 cm in diameter and 20.0 cm long has 500 turns and carries a current of 15.0 a. calculate the magnetic flux through the circular cross-sectional area of the solenoid.
The solenoid's circular cross-sectional area has a magnetic flux of 0.0185 voltsec.
The magnetic constant, 0 in the formula, has a value of 4 x 10-7 Hm-1 or 12.57 x 10-7 Hm-1. N and I in the formula stand for the number of turns and the current flowing through the solenoid, respectively.
Calculation:R = 2 cm for the solenoid's radius
L=20cm, turns=N=500
turns per unit length = n=1,250turns/meter
current i=15A
Magnetic field through the solenoid = μ0ni=4π×10 −7 ×1250×15units
B=2.356×10−2 H
Outside of the solenoid's turns, the magnetic field is 0 and only exists in the region around r.
Flux=B×πr2 =0.0185voltsec
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What is the signal amplitude of ECG Mcq?
The signal amplitude of ECG Mcq is the maximum voltage of the electrical signal produced by the contraction of the heart muscle.
What is amplitude?
Amplitude is the measure of how much energy is contained in a wave. It is defined as the maximum absolute value of the wave, usually measured from the midpoint of the wave. Amplitude is a crucial element of waveform that determines the sound's loudness or intensity of the wave. As the amplitude increases, so does the sound's intensity and vice versa. Amplitude is typically measured in decibels (dB) and is the most important factor when determining the sound level of a wave.
It is measured in millivolts (mV) and is typically between 1 and 10 mV. The higher the amplitude, the better the signal quality.
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:
This is in finance literacy Please help ASAP
C. the amount of money in your checking account
What are the 6 elements of satire?
What is the primary rationale behind making space travel available to the general public beyond the profits it might generate?.
The primary rationale behind making space travel available to the general public for exploring space includes advancing scientific research, national prestige, unifying nations, ensuring future human survival, and developing military and strategic superiority over other nations.
Since 1960, the main purpose of space travel has been to send humans into outer space. At a cost of at least US$250 (roughly R$1.3 million) per seat, 2021 should be the first year of a suborbital flight with a passenger.
The first advantage of space exploration is knowledge. Thanks to this, people can get much more information about the universe. It's not just about the shape of the Earth or the number of planets in our solar system, it's about understanding the laws and secrets of our universe.
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A 3.00-cm-diameter parallel-plate capacitor with a spacing of 0.600 mm is charged to 500 V .What is the total energy stored in the electric field?What is the energy density?Show all work thanks.
The total energy stored in the electric field is U= 5.789*10^(-13)
The energy density u= 0.06548555 J/m³
Electrical energy: The capacitor's total electrical energy (U) is calculated as follows:
U= ½ CV²
The ratio of the charge on a capacitor to its potential is referred to as the capacitor's capacitance. The charge Q has a direct relationship with the electric field in the space between the conductors.Potential often refers to a skill that is still being developed. The phrase refers to things that are in a condition where they have the capacity to change, from the simple release of energy by items to the manifestation of skills in individuals. It is used in a wide range of disciplines, from physics to the social sciences.The quantity of energy that may be held in a system or area of space per unit volume is known as energy density. It is occasionally mistaken with specific energy, also known as gravimetric energy density, or energy per unit mass.The accompanying image has a clear explanation.
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An object with an initial speed of 4. 0 meters per second accelerates uniformly at 2. 0 meters per second2 in the direction of its motion for a distance of 5. 0 meters. What is the final speed of the object?.
An object moving at an initial speed of 4.0 meters per second accelerates uniformly at 2.0 meters per second over a distance of 5.0 meters. What is the final speed of the object? Vi=4m/s
After uniformly accelerating in the direction of motion, the object's final speed is 6 m/s.
The final speed of the item is calculated using the third equation of motion. v is the final speed or velocity, a, where u is the initial velocity, an is the acceleration, and s is the distance covered.
The final velocity is 20 m/s.
Initial speed is 16 meters per second.
By changing these values in Equation 1, the equation can be solved.
20² = 16²+2×a×36\s36a = 400-256
36a = 144\sa = 144/36\sa = 4
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If a wheel has a radius of 0.26m, how far does it go after 5 rotations
The distance wheel goes about 1.3m after 5 rotations.
What is distance called?Distance is a measurement of how far away two things or locations are, either numerically or occasionally qualitatively. Distance can refer to a physical length in physics or to an estimate based on other factors in common use.A scalar number known as distance measures "how much ground an item has traversed" while moving. An object's total change in position is referred to as displacement, a vector variable that measures "how far out of place an item is."The Distance Formula itself is actually derived from the Pythagorean Theorem which is a 2 + b 2 = c 2 {a^2} + {b^2} = {c^2} a2+b2=c2 where c is the longest side of a right triangle (also known as the hypotenuse) and a and b are the other shorter sides (known as the legs of a right triangle).
Given data :
radius = 0.26 m
rotation = 5
Distance = 0.26 x 5 = 1.3 m
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for the capacitor network shown in (figure 1), the potential difference across ab is 48 v .
The charge on the 150 nF capacitor is 3200 nF, the charge on the 120 nF capacitor is 3200 nF, the total energy stored in the network is 76.8× 10⁻⁶ J, the energy stored in the 150 nF capacitor is 34.1 × 10⁻⁶ J, the energy stored in the 120 nF capacitor is 42.67 × 10⁻⁶ J.'
When the capacitors are attached in series, the equivalent capacitance is,
C eq = ( 1/C₁ + 1/C₂)⁻¹ = ( 1/150 + 1/120)⁻¹ = 66.67 nF
The charge on each capacitor remains the same because they connected in series. Consequently, each capacitor's charge is,
Q = C V = (66.67 nF) (48 V) = 3200 nC
The charge on the 150 nF capacitor is Q 150 = 3200 nC
The charge on the 120 nF capacitor is Q120 = 3200 nC
The network's overall amount of energy is,
U = Q²/2C = (3200 × 10⁻⁹)²/ (2× 66.67× 10⁻⁹) = 76.8 × 10⁻⁶ J
The 150 nF capacitor's energy stored is,
U = Q 150²/2C = (3200 × 10⁻⁹)²/ (2× 150× 10⁻⁹) = 34.1 × 10⁻⁶ J
The 120 nF capacitor's energy stored is,
U = Q 120²/2C = (3200 × 10⁻⁹)²/ (2× 120× 10⁻⁹) = 42.67 × 10⁻⁶ J
The question is incomplete. The complete question is 'Find the charge on the 150 nF capacitor.
Find the charge on the 120 nF capacitor.
Find the total energy stored in the network.
Find the energy stored in the 150nF capacitor.
Find the energy stored in the 120nF capacitor.'
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a force produces power p by doing work w in a time t what power will be produced by a force that
The power that will be produced by such a force is 12 times the initial power.
What is power?Power can be defined as the time rate of doing work. Also power can be defined as the energy expended per unit time.
Mathematically, the formula for power expended by an object is given as;
p = E / t
where;
p is the powerE is the energyt is the timep = w / t
where;
w is the work doneWhen a force does six times as much work in half as much time, the power becomes;
p' = (6w) / (¹/₂t)
p' = (2 x 6w) / t
p' = 12w/t
p' = 12 (p)
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The complete question is below:
a force produces power p by doing work w in a time t what power will be produced by a force that does six times as much work in half as much time?
a muon (a subatomic particle with a mass of 1.884 × 10–25 g) traveling at 320.0 m/s
The wavelength of a muon sub atomic particle is 0.0109474 × 10⁻¹²m.
A periodic wave's wavelength is its spatial period, or the length over which its shape repeats. It is a property of both travelling waves and standing waves, as well as other spatial wave patterns. It is the distance between two successive corresponding locations of the same phase on the wave, such as two neighboring crests, troughs, or zero crossings.
We are given that ,
Mass = m = 1.884 × 10⁻²⁵g = 1.884 × 10⁻²²kg
Velocity = v = 320.0 m/s
So that to calculate the wavelength of the sub atomic particle we can use the formula,
λ = h/mv
Where , h is the plank's constant having value of 6.6 × 10⁻³⁴Js. Putting these values in above equation we can get,
λ = h/mv
λ = ( 6.6 × 10⁻³⁴Js)/ (1.884 × 10⁻²²kg)(320.0 m/s)
λ = 0.0109474 × 10⁻¹²m
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A wheel i rotating about an axi that i in the z-direction. The angular velocity ωz i -6. 00 rad/ at t = 0, increae linearly with time, and i 4. 00 rad/ at t = 10. 0. We have taken counterclockwie rotation to be poitive. I the angular acceleration during thi time interval poitive or negative?
The time interval during which the speed of the wheel is increasing is 4 s.
What is angular acceleration?The temporal rate at which angular velocity changes is known as angular acceleration. The standard unit of measurement is radians per square second.
Calculation:The angular velocity at time t = 0, is ω₁ = - 6.00 rad/s.
The angular velocity at time t = 10.0 s, is ω₂ = +4.00 rad/s.
Angular acceleration of the wheel = change in angular velocity /time interval= ( 4.00 - (-6.00))/10 rad/s²
= 1.0 rad/s²
Hence, angular velocity becomes zero at time = ( 0 - ( -6))/1.0 s = 6 s.
So, during t = 0 to t = 6s, the clockwise angular velocity of the wheel decreases from 6.00 rad/s to 0.00 rad/s and during t = 6s to t = 10s , the counterclockwise angular velocity of the wheel increases from 0.00 rad/s to +4.00 rad/s.
Hence, the time interval during which the speed of the wheel is increasing is = 10 s - 6 s = 4 s.
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What is 1 wavelength called?
When wavelength is expressed in meters, 1/ refers to the amount of waves in a wave train that may be found across a duration of one metre, also known as that of the wavelength range of the spectral line.
What is a wave length?
A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (subsequent crests) in consecutive cycles. This length is typically defined in wireless systems as meters (m), centimeters (cm), or millimeters (mm) (mm).
What is a "wavenumber"?
The word "wave number" describes how many complete electromagnetic (EM) wave cycles are contained within a linear area of one meter (1 m). Reciprocal meters are used to express wave number (m-1)m, the wavelength for.
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Skyler whose mass is 74.5 kg is moving across at 9.52 m/s while holding a 2.05 kg carefully packed snowball forward with speed of 15.9 m/s . Determine Skyler velocity after throwing the snowball .
Skyler velocity after throwing the snowball is 9.34 m/s in forward direction.
What is velocity?A body's velocity is the rate at which its displacement alters with respect to time. A vector quantity with both magnitude and direction is velocity. The meter/second unit of measurement for velocity.
Given that Skyler whose mass is 74.5 kg is moving across at 9.52 m/s while holding a 2.05 kg carefully packed snowball.
forward speed of the snowball = 15.9 m/s.
Let the Skyler velocity after throwing the snowball = v.
According to principle of conservation of momentum;
Total initial momentum = total final momentum
⇒ (74.5 + 2.05)9.52 = 74.5×v + 15.9×2.05
⇒ 74.5×v = (74.5 + 2.05)9.52 - 15.9×2.05
⇒ v = 9.34 m/s.
Hence, velocity of the Skyler is 9.34 m/s. in forward direction.
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a positive point charge q is released from rest at point x. if the magnitude of the electric field at point x is e, what is the kinetic energy of the charge at point y? (a) (b) (c) (d) (e) qed 2qed 2qed 2 2qed 4qed
The kinetic energy of the charge at point y K.E. = q2E2t2 / 2m is the formula of columb's law.
What is kinetic energy?
Kinetic energy is the energy of motion. It is the energy possessed by an object due to its motion. This type of energy is associated with the movement of particles, atoms and molecules. Kinetic energy is expressed in terms of mass, velocity, and momentum. It can be calculated using the formula KE = ½mv², where m is the mass of the object and v is its velocity. Kinetic energy is associated with a variety of physical phenomena, including sound, light, electricity, and magnetism.
Law of Coulomb
The electrostatic force between two charged items is inversely proportional to the square of the distance between the two objects and directly proportional to the product of their charges.
Electrostatic force,
F = q E
m (dv/dt) = q E
Integrating, we will get,
v = q E t / m + c
where c= integraing constant.
at t = 0, v = 0, so c = 0
now, v = q E t / m
Therefore,
K.E. =1/2 m v2
K.E. = q2E2t2 / 2m
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playing with their time machine again, the usf physics department now sends you back in time 4 billion years into the past. this time you decide to go for a swim in the ocean, what do you see?
Observed by you The countryside all surrounding you is just rocks.
What existed four billion years ago?The Hadean eon began with the genesis of the planet and ended 4.0 billion years ago; it is the period of time before a trustworthy (fossil) record of life. The first signs of life on Earth and its early evolution appeared during the Archean and Proterozoic eons that followed.
Did life exist on Earth 4 billion years ago?According to him, the fact that bacteria were already so diverse at this time in Earth's history indicates that life may have first appeared on the planet 4 billion years ago. Even more controversial than Schopf's discoveries are those of other researchers, who have discovered evidence of life at least that far back.
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a parallel plate capacitor with air between the plates is charged and then disconnected from the source of emf. if the space between the plates is now filled with a dielectric, what happens to the capacitance of the capacitor and the magnitude of the electric field between the plates? capacitance (a) increases (b) increases (c) increases (d) decreases (e) decreases magnitude of the electric field increases remains constant decreases increases decreases
As the dielectric constant K exceeds 1, the capacitance rises. Possible variation V = CQ. The p.d. between the plates lowers as C rises while Q stays the same when the battery is disconnected.
Electric field E=dV, where d is the distance between the plates and V is the p.d. The electric field also diminishes when V lowers while d stays constant. U=21CQ2 is the energy stored in a capacitor. U declines while Q stays constant and C rises.
If the plates of a parallel plate capacitor are pulled apart while it is charging, what happens?As the plates are separated, the distance d between them increases, which causes the capacitance to decrease. As a result, the capacitor's voltage rises as Q=CV in order to keep the charge constant.
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How long will it take for a radioactive sample to reduce to 1% of his original activity?
The amount of material must also fall to [1%] of its initial amount for the activity of the supplied radioactive isotope to decrease to [1%] of its initial level. As a result, it will take the radioactive isotope [6.645T] years to decay to around [1%] of its original value.
How much of a radioactive element remains after one half-life?As a result, 50% of the original parent nuclei are still present after one half-life, 25% after two half-lives, etc. The half-life and the initial quantity of radioactive atoms present both affect how much radiation is produced by a radioactive source.
How much would still be radioactive after six days?So after 3 half lives, or 6 days, around 12.5% of the total radioactive material will still be present.
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Why does the loop of a wire affect magnetism?
Unlike a straight wire where various segments of the wire are at varying distances from a given location, a circular loop has all charges flowing at the same distance from a point on its axis. the magnetic field is concentrated after being spread out in the case of a straight wire.
What would happen if you put a magnet within a wire loop?According to Faraday's Law, when a magnet is moved into a coil of wire, altering the magnetic field and magnetic flux through the coil, a voltage is produced in the coil.
What in magnetism is a loop?The relationship between the induced magnetic flux density (B) and the magnetizing force is depicted by a hysteresis loop.
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When two substances that cannot dissolve each other are mixed, a mixture is formed.
A heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is a .
A heterogeneous mixture that has larger dispersed particles that settle over time is a
A heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is a colloid. A heterogeneous mixture that has larger dispersed particles that settle over time is a suspension.
What is a suspension heterogeneous mixture?A heterogeneous suspension is a mixture of components in which the solid particles cannot dissolve into the solution and they can be easily observed, while a colloid consists of macroscopic substances.
Therefore, with this data, we can see that a suspension is any heterogeneous mixture where major solid particles are not mixed.
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Which electromagnetic wave has the lowest frequency?
Radio waves are the types of EM radiation with the lowest energy, longest wavelengths, and lowest frequencies.
What are radio waves?The electromagnetic spectrum's longest wavelengths, which are found in radio waves, are normally found at frequencies of 300 gigahertz (GHz) and lower. The wavelength for 30 Hz is 10,000 kilometers (6,200 miles) while the wavelength for 300 GHz is 1 mm (shorter than a grain of rice) (longer than the radius of the Earth). Like all electromagnetic waves, radio waves move at the speed of light in a vacuum and at a nearly same, slightly slower speed in the Earth's atmosphere. Charged particles, such as time-varying electric currents, that are accelerating produce radio waves.For more information on radio waves kindly visit to
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what would happen to the orange liquid in the lava lamp if heat did not conduct out of the top of the lava lamp? what would happen to the orange liquid in the lava lamp if heat did not conduct out of the top of the lava lamp? the orange liquid would stay near the bottom of the lava lamp. the orange liquid would rise toward the top of the lava lamp. the orange liquid would stay near the top of the lava lamp. the orange liquid would sink toward the bottom of the lava lamp.
The orange liquid would stay near the top of the lava lamp if the heat did not conduct out of the top of the lava lamp.
Lava lamp - A lava lamp is a decorative lamp, It consists of a bolus of a special coloured wax mixture inside a glass vessel, the remainder of which contains clear or translucent liquid.
The lava lamp contains two liquids with different densities that do not mix and that expand at different rates when heated.
We observe that in the lava lamp experiment, the density of oil is much lower than that of water. Although the water and oil layers separate due to the densities the food couriering has the same density as that of water.
So, If heat did not conduct out of the top of the lava lamp, the orange liquid would stay near the top of the lava lamp
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