The repelling thrust between the two plastic spheres is [tex]2.83x10^-13 N[/tex].
The force of repulsion between two plastic spheres can be calculated using Coulomb's Law, which states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
The formula for Coulomb's Law is:
[tex]F = (k*q1*q2)/r^2[/tex]Where F is the force of repulsion, k is Coulomb's constant [tex](9x10^9 Nm^2/C^2)[/tex], q¹ and q² are the charges on the plastic spheres, and r is the distance between them.
Given that each sphere has a deficit of [tex]1.2x10^8[/tex] electrons, we can calculate the charge on each sphere using the formula q = n*e, where n is the number of electrons and e is the charge of an electron [tex](1.6x10^-19 C)[/tex].
[tex]q¹ = q² = (1.2x10^8)*(1.6x10^-19) = 1.92x10^-11 C[/tex]
Plugging in the values into the formula for Coulomb's Law, we get:
[tex]F = (9x10^9)*(1.92x10^-11)*(1.92x10^-11)/(1.1)^2F = 2.83x10^-13 N[/tex]
Therefore, the force of repulsion between the two plastic spheres is [tex]2.83x10^-13 N[/tex].
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Rank the following events in the order that corresponds to the formation of a planetary system.1. Gravity collapses a cloud of interstellar gas2. A rotating disk forms & dust grains stick together by static electricity3. Small bodies collide to form larger bodies4. Primary atmospheres form5. A stellar wind "turns on" and sweeps away gas and dust, removing primary atmopsheres from planets6. Secondary atmospheres form
From the given data, the correct ranking of events in the order of formation of a planetary system is 1, 2, 3, 4, 5, 6.
The events that lead to the formation of a planetary system are not completely understood, but current theories suggest the following sequence:
Gravity collapses a cloud of interstellar gas, which begins to rotate due to conservation of angular momentum.
As the cloud collapses, it forms a rotating disk called a protoplanetary disk. Dust grains in the disk stick together by static electricity to form planetesimals.
Planetesimals collide and merge to form larger bodies called protoplanets.
As protoplanets grow in size, they begin to gravitationally attract gas from the protoplanetary disk, forming primary atmospheres.
A stellar wind from the forming star may "turn on" and sweep away gas and dust from the protoplanetary disk, removing some of the primary atmospheres from planets.
After the stellar wind dissipates, the protoplanetary disk becomes depleted of gas and dust, and protoplanets continue to grow by accreting planetesimals and other protoplanets. As protoplanets grow larger, they may develop secondary atmospheres from volcanic outgassing, comet impacts, or other processes.
So, the correct sequence of events is:
1. Gravity collapses a cloud of the interstellar gas
2. A rotating disk forms and dust grains get stick together by static electricity
3. Small bodies collide to form larger bodies
4. Primary atmospheres form
5. A stellar wind "turns on" and sweeps away the gas and dust, removing the primary atmospheres from planets
6. Secondary atmospheres form
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Five balls move through the air as shown in the figure . All five have the same size and shape. Air resistance is not negligible.rank in order, from largest to smallest, the magnitudes of the accelerations aa to ae . some may be equal.
The ranking of accelerations is Ball B > Ball A = Ball E > Ball C > Ball D.
The forces acting on each ball, such as gravity and air resistance, determine its acceleration.
Each ball faces resistance from the air, which is dependent on the ball's speed, the air's density, as well as its size, and form.
We can use the following observations to rank the accelerations of the balls:
All balls have the same size and shape, so they experience the same air resistance at the same speed.
Balls A and B have the same mass, but Ball B has twice the weight of Ball A.
Balls C and D have the same weight, but Ball D has twice the mass of Ball C.
Ball E has the same mass as Ball A, but it is moving upward with a speed of 20 m/s.
From these observations, we can make the following ranking:
a>B=C>D>e
Ball B experiences the largest acceleration because it has the largest force (due to its weight) relative to its mass. Balls A, C, and E have the same weight, but Ball A has the smallest mass and Ball E is moving upward, so they experience larger accelerations than Ball C. Ball D has the same weight as Ball C, but twice the mass, so it experiences a smaller acceleration due to the larger air resistance force acting on it.
Therefore, the ranking of accelerations is Ball B > Ball A = Ball E > Ball C > Ball D.
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The question is -
Five balls move through the air as shown in Fig. 6.17. All five have the same size and shape. Air resistance is not negligible. Rank in order, from largest to smallest, the magnitudes of the accelerations aa to ae. Some may be equal. Give your answer in the form a>b=c>d>e and explain your ranking.
Ball A: m=50g, vy=0, just released
Ball B: m=100g, vy=0, just released
Ball C: m=50g, vy=-20m/s
Ball D: m=100g, vy=-20m/s
Ball E: m=50g, vy=20 m/s
Describe the difference between linear momentum and angular momentum.
Linear momentum is a physical quantity that describes the motion of an object in a straight line. It is the product of an object's mass and its velocity, and it has both magnitude and direction. The direction of the linear momentum is the same as the direction of the object's velocity. In other words, linear momentum is a vector quantity.
Angular momentum, on the other hand, is a physical quantity that describes the rotational motion of an object. It is the product of an object's moment of inertia and its angular velocity, and it also has both magnitude and direction. The direction of the angular momentum is perpendicular to the plane of rotation, and it is defined by the right-hand rule. In other words, angular momentum is also a vector quantity.
In summary, the main difference between linear momentum and angular momentum is the type of motion that they describe. Linear momentum describes the motion of an object in a straight line, while angular momentum describes the rotational motion of an object.
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Question
Jayden was given a marshmallow and a syringe in class to experiment with. She placed the marshmallow in the syringe and sealed the end. When she depressed the plunger of the syringe what happened to the marshmallow and why?
Responses
A The increased pressure, allowed the molecules to spread apart, and caused the marshmallow to grow larger.The increased pressure, allowed the molecules to spread apart, and caused the marshmallow to grow larger.
B The increased pressure, pushed the molecules closer together, and caused the marshmallow to shrink.The increased pressure, pushed the molecules closer together, and caused the marshmallow to shrink.
C The decreased pressure, allowed the molecules to spread apart, and caused the marshmallow to grow larger.The decreased pressure, allowed the molecules to spread apart, and caused the marshmallow to grow larger.
D The decreased pressure, pushed the molecules closer together, and caused the marshmallow to shrink.
The marshmallow shrunk as a result of the increased pressure's effect on the molecules' tendency to cluster together (option b).
Stress equates to pressure, right?Between pressure and stress, there are several distinctions. Although both of these words are frequently used interchangeably. Generally speaking, the force applied per unit area can be used to quantify pressure. The amount of force applied per unit area that a material experiences is referred to as stress, on the other hand.
What do you mean by pressure?When we feel compelled and intimidated, we tend to react in a worried manner. It typically takes place when we are faced with a circumstance that we don't feel in control of or can manage. whenever we are under stress, such as when we are trying to balance a lot of obligations.
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when you step outside and feel the heat of the sun on your skin What form of heat transfer is this?
Answer:Radiation
Explanation:
A ball with an initial speed of 4.0 m/s undergoes constant acceleration at 3.0 m/s² for 5.0 s. What is the total distance traveled by the ball during this 5.0-s period?
A 38 m
B 58 m
C 75 m
D 95 m
As an objects falls freely near earths surface the loss in gravitational potential energy of the objects is equal to its
An object's loss in gravitational potential energy as it descends freely close to the surface of the earth is equal to its "kinetic energy."
Explain the conversion of gravitational potential energy in kinetic energy?Both in the scientific and common sense, climbing stairs as well as lifting objects count as work because they both involve exerting force against gravity. Energy undergoes a transition when work is done.
The effort put out to resist gravity is converted into a significant kind of stored energy, which we will examine in this section. This is what we refer to as gravitational potential energy.Kinetic energy is one possible transformation of gravitational potential energy. Gravitational force will exert work on the mass equal to mgh if we let it go, increasing its kinetic energy by the equivalent amount (as per the work-energy theorem).Thus, an object's loss in gravitational potential energy as it descends freely close to the surface of the earth is equal to its kinetic energy.
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The complete question is-
As an objects falls freely near earths surface the loss in gravitational potential energy of the objects is equal to its _______.
what is 40 degrees celsius in fahrenheit
40 degrees Celsius equals 104 degrees Fahrenheit. We use the formula: F = (C x 1.8) + 32
40 degrees Celsius equals 104 degrees Fahrenheit. The Fahrenheit and Celsius scales are two common temperature measurement systems used around the world. The Celsius scale is based on the freezing and boiling points of water, where 0 degrees Celsius is the freezing point and 100 degrees Celsius is the boiling point at standard atmospheric pressure. In contrast, the Fahrenheit scale is based on a system where 32 degrees Fahrenheit is the freezing point and 212 degrees Fahrenheit is the boiling point of water at standard atmospheric pressure.
To convert Celsius to Fahrenheit, you can use the formula:
F = (C x 1.8) + 32
Therefore, 40 degrees Celsius multiplied by 1.8 and then adding 32 equals 104 degrees Fahrenheit
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A difference between linear momentum and angular momentum involves...
Answer:
Both are analogous terms.
Explanation:
Linear momentum is used to refer to a body moving on a straight path whereas angular momentum is used for a body moving on a circular path.
what are the 4 terms used to describe thermal properties of a material?
Thermal conductivity (k), mass density (), specific heat (Cp), and, for materials that may undergo thermal degradation (such as pyrolysis), the heat of gasification (Lg) and ignition temperature, are among the thermal parameters that are relevant to fire behavior (Tig).
Infrared mass. A crucial element in the dynamic heat transfer interactions within a building is thermal mass, which is a material's resistance to temperature change as heat is added or removed. The four elements that need to be comprehended are thermal lag, specific heat, density, and thermal capacity. Heat is often stored longer in denser materials. These are density,, thermal conductivity, k, and heat capacity, Cp. density and k for thermal conductivity. The amount of thermal energy needed to raise a substance's temperature by 1°C is known as its heat capacity (with the value depending on which temperature scale is used).
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as the body jumps into the air, what three factors other than gravity and air resistance influence the trajectory of the body as described in exsc 350?
When a body jumps into the air, in addition to the effects of gravity and air resistance, several other factors influence its trajectory. Three of the most important factors are Initial velocity, angle of projection, and Spin or angular momentum.
Initial velocity: The velocity at which the body jumps into the air has a significant effect on its trajectory. A body that jumps with a higher initial velocity will travel farther and higher than one that jumps with a lower velocity.
The angle of projection: The angle at which the body is projected into the air can greatly affect its trajectory. If the body is projected at a low angle, it will travel farther along the ground, while a higher angle of projection will result in a shorter distance but greater height.
Spin or angular momentum: The spin or angular momentum of the body can affect its trajectory by causing it to deviate from a straight line. A body with no spin will typically follow a straight trajectory, while one with spin will experience a curved or twisting motion in the air. This effect is particularly important in sports such as baseball, tennis, and gymnastics, where the spin of the ball or body can greatly influence its trajectory.
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An electric heater has two power settings .One Setting is 0.5kW and the other is 1.5kW One Kwh Of Electricity Cost 11 Pence . Calculate how much you would save if you used the heater 12 hours on the 0.5 setting Instead of the 1.5kW Setting.
I really need help on this
answer
is 1 kw is the answer
The equation of motion of a simple harmonic oscillator is d2x/dt2=9x, where x is displacement and t is time. Find the period of oscillation.
The time period of oscillation is 2.09 units.
The equation of motion for a simple harmonic oscillator is given by:
[tex]\frac{d^2x}{dt^2} + (\omega^2)x = 0,[/tex]
The time period of a periodic motion is the time required for one complete cycle of the motion. In other words, it is the time interval between two successive identical points in the motion.
where x is displacement, t is time, and ω is the angular frequency of the oscillator.
Comparing this equation to the given equation, we can see that [tex]\omega^2[/tex] = 9, so ω = 3. The period T of the oscillation is given by:
T = 2π/ω
Substituting the value of ω, we get:
T = 2π/3
T = 2 (3.14)/3
T = 2.09
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higher angles tend to _________ the perception of status and strength of the subject.
Higher angles tend to decrease the perception of status and strength of the subject.
What is a higher angle?Because when camera gazes on the figure or subject from either a high vantage point, it is called a high angle shot. This is often accomplished by raising the camera above the subject and then directing it to capture them from below. At a shallow angle just above eye level to directly above the subject, this can be used.
Why does a higher angle matter?The high angle view may provoke a variety of feelings, from vulnerability and dread to tension and danger, depending on the circumstances of the story you're presenting. High angle shots may also be a plot-supporting, narrative-engaging, scene-setting, and portray a broad narrative scale in movies.
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Answer the two questions in the photo. (10p)
Answer: both answers are D
Explanation: Mass is measured in kilograms; even though we usually talk about weight in kilograms, strictly speaking it should be measured in newtons, the units of force.
Density is the substance's mass per unit of volume.
Answer:
Both answers are d
Explanation:
Mass is measured in kilograms; although we usually talk about weight in kilograms, strictly speaking, it should be measured in newtons, the units of force.
Density is the substance's mass per unit of volume.
Brainliest Please
Why do different atoms have different lines in their spectra?A. different elements have different energy levels for the electronsB. light from a continuous spectrum source passing through a cooler low-density gasC. an eruption of solar material from the photosphereD. aurorascommunication blackouts
The correct answer is A) Different elements have different energy levels for the electrons.
The other options listed (B, C, and D) do not explain why different atoms have different lines in their spectra. Option B describes the process of absorption spectroscopy, while options C and D describe phenomena that are not related to the properties of atomic spectra.
The lines in the spectra of different atoms are caused by the energy transitions that occur when electrons move between different energy levels within the atom. Each atom has a unique set of energy levels that are determined by the arrangement of its electrons and the properties of its nucleus, including its atomic number.
When an atom absorbs or emits light, the energy of the light matches the difference in energy between two energy levels of the electrons in the atom. This produces a line in the atom's spectrum that is characteristic of that element.
Therefore, the lines in the spectra of different atoms are unique and can be used to identify the elements present in a sample of matter. This technique is called spectroscopy and is used in a wide range of fields, including astronomy, chemistry, and materials science.
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How do you read a ruler in CM?
To read a ruler in cm, locate the zero mark on the ruler, then read the measurement where the object being measured ends, aligning the end of the object with the appropriate line on the ruler, and counting the number of centimeters to that line.
When reading a ruler in cm, it is important to identify the zero mark on the ruler and align it with the beginning of the object being measured. Then, locate the end of the object and align it with the appropriate line on the ruler, counting the number of centimeters to that line.
Each centimeter on the ruler is divided into 10 smaller units called millimeters, so it is also possible to measure to the nearest millimeter by identifying the smallest line on the ruler that aligns with the end of the object.
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The cheetah can run 103 km/h, a falcon can
fly 148 km/h, and a sailfish can swim 92 km/h.
The three of them run a relay with each covering a distance L at maximum speed.
What is the average speed of this relay
team?
Answer in units of km/h.
Answer: 109.9 km/h
Explanation:
To find the average speed of the relay team, we need to determine the total distance covered by the three animals and the time it takes for them to complete the race. Assuming each animal runs/swims at maximum speed for distance L, we can calculate the time it takes for each animal to complete its part of the relay as:
Cheetah: Time taken = Distance / Speed = L / 103
Falcon: Time taken = Distance / Speed = L / 148
Sailfish: Time taken = Distance / Speed = L / 92
Since the three animals take turns to complete the race, the total time taken for the relay race would be the sum of the time taken by each animal:
Total time taken = L/103 + L/148 + L/92
To find the average speed, we need to divide the total distance covered (3L) by the total time taken:
Average speed = Total distance / Total time
= 3L / (L/103 + L/148 + L/92)
= 3 / (1/103 + 1/148 + 1/92)
= 109.9 km/h (rounded to one decimal place)
Therefore, the average speed of the relay team is approximately 109.9 km/h.
Regenerate response
Two skaters stand facing each other. One skater's mass is 60 kg, and the other's mass is 72 kg. If the skaters push away from each other without spinning, what happens?
When two skaters with mass push away from each other without spinning they move away equal and opposite velocities as per law of conservation of momentum
This means that the momentum of the system before the push is equal to the momentum after the push.
Assuming that the initial velocity of the skaters is zero, the total initial momentum of the system is zero. When they push away from each other, the momentum of the first skater will be equal and opposite to the momentum of the second skater. This means that the first skater will move away from the second skater with a certain velocity, while the second skater moves away from the first skater with an equal and opposite velocity.
The magnitude of the velocities of the skaters will depend on their masses and the force applied during the push. Since the second skater has a greater mass than the first skater, their velocity will be smaller but still in the opposite direction. Overall, the skaters will move away from each other without spinning, and the total momentum of the system will be conserved.
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a blimp used for aerial camera views of sporting events holds 200,000 ft3 of helium.(a)how much does the helium weigh?(b)what is the buoyant force on the blimp at sea level?(c)how much can the blimp lift (in addition to the helium)?
The buoyant force on the blimp at sea level is approximately 15,273 lb.
The buoyant force's strength is proportional to how much fluid the object has moved.
What is Buoyant Force?
Buoyant force is the upward force exerted by a fluid (such as water or air) on an object immersed in it, which opposes the weight of the object and helps it float or remain suspended. It is a result of the difference in pressure exerted by the fluid on the top and bottom of the object due to its displacement of the fluid.
(a) To determine the weight of the helium, we need to know its density. At standard temperature and pressure (STP), the density of helium is approximately 0.1785 g/L. To convert 200,000 ft3 to liters, we multiply by 28.3168 L/ft3:
200,000 ft3 × 28.3168 L/ft3 = 5,663,360 L
Multiplying by the density, we get:
5,663,360 L × 0.1785 g/L = 1,010,472 g
Converting to pounds, we have:
1,010,472 g ÷ 453.59237 g/lb ≈ 2,229 lb
Therefore, the helium in the blimp weighs approximately 2,229 lb.
(b) The buoyant force on the blimp is equal to the weight of the displaced air. At sea level, the density of air is approximately 1.225 kg/m3. To convert 200,000 ft3 to cubic meters, we multiply by 0.0283168 m3/ft3:
200,000 ft3 × 0.0283168 m3/ft3 = 5,663.36 m3
Multiplying by the density of air, we get:
5,663.36 m3 × 1.225 kg/m3 ≈ 6,924 kg
Converting to pounds, we have:
6,924 kg × 2.20462 lb/kg ≈ 15,273 lb
Therefore, the buoyant force on the blimp at sea level is approximately 15,273 lb.
(c) The amount the blimp can lift in addition to the helium is equal to the difference between the weight of the blimp and the weight of the helium. Assuming the weight of the blimp is negligible compared to the weight of the helium, the blimp can lift an additional 2,229 lb.
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Which one of the following values is the smallest possible amount of free charge that has been discovered? A. 1.6 X 10-19 coulombs B. 6.63 x 10-34 coulombs C. 1.38 x 10-23 coulombs D. 5.34 x 10-20 coulombs E. 8.85 x 10-12 coulombs
Among the answer choices provided, correct option is (A) which means smallest charge is [tex]1.6 * 10^(-19)[/tex] coulombs.
Charge is a fundamental property of matter and is quantized, which means it can only exist in discrete amounts, rather than being continuous. The smallest unit of charge is the charge of an electron, which has a magnitude of [tex]1.602 * 10^(-19)[/tex] coulombs. This value is given in option (A).
Option (B) [tex]6.63 * 10^(-34)[/tex] coulombs is not a valid value for charge since it is in the range of Planck's constant, which is a fundamental constant in quantum mechanics.
Option (C) [tex]1.38 * 10^(-23)[/tex] coulombs is the value of the Boltzmann constant, which is related to the average kinetic energy of particles in a gas.
Option (D) [tex]5.34 * 10^(-20)[/tex] coulombs and option
(E) [tex]8.85 * 10^(-12)[/tex]coulombs are not valid values for the smallest unit of charge, as they are not within the range of any known physical constant or value.
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Two charges are aligned with a -2.5x10-6 C charge 0.50 m directly below a 3.0x10-6 C charge. Calculate the force acting on both charges, including direction.
Show work please.
what does the presence of molecular bands in the spectrum of a star indicate?
The presence of molecular bands in the spectrum of a star indicates the chemical composition of its atmosphere.
The spectrum of a star is a graph that shows the intensity of light emitted by the star at different wavelengths. When this light passes through the star's atmosphere, it interacts with the gases and elements present there. This interaction creates absorption lines and bands in the spectrum, which can be used to determine the chemical composition of the star's atmosphere.
Molecular bands in the spectrum indicate the presence of molecules in the star's atmosphere, such as hydrogen, helium, water vapor, carbon dioxide, and methane.
By analyzing the spectrum of a star, astronomers can determine its chemical composition and gain insights into its properties, such as its temperature, density, and age.
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Which change will occur in a system with increasing entropy?
A. Thermal energy will increase.
B. Mechanical energy will increase.
c. Elastic potential energy will decrease.
D. Gravitational potential energy will decrease.
Thermal Energy will increase. This change will occur in a system with increasing entropy.
Entropy:
Entropy is a measure used to determine how chaotic or random a system is. It is a state function in thermodynamics that specifies how energy is distributed and how much energy is available to do meaningful work. As entropy tends to increase over time, the energy available to do work decreases. According to the second law of thermodynamics, the overall entropy of a closed system does not decrease, which means that energy tends to spread out and become more disordered. Many fields of science, such as chemistry, physics, and biology, as well as many practical applications, such as energy conversion, information theory, and materials science, rely on an understanding of entropy.
Thermal Energy:
The term "thermal energy" is used loosely in various contexts in physics and engineering. It can refer to several different well-defined physical concepts. These include the internal energy or enthalpy of matter and radiation; heat, defined as a transfer of energy (such as thermodynamic work); and clean energy of a certain type. Every object or substance has thermal energy - the sun is the greatest source of thermal energy in our solar system. Heat is the transfer of energy from one object or substance to another, that is, a flow of thermal energy.
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who were recognized for exoplanet discoveries with a share of the 2019 nobel prize in physics?
The Nobel Prize of 2019 in Physics was shared by the three scientists: James Peebles, Michel Mayor, and Didier Queloz.
James Peebles received half of the prize "for the theoretical discoveries in physical cosmology", while Michel Mayor and Didier Queloz shared other half "for the discovery of exoplanet orbiting a solar-type star."
Mayor and Queloz were recognized for their discovery of first exoplanet orbiting a sun-like star, 51 Pegasi b, which they detected using the radial velocity method. Their discovery opened up a new field of astronomy and led to the detection of thousands of other exoplanets in the years since.
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What is one situation when experiencing static electricity?
Answer:
getting shocked
Explanation:
i didnt really get the answer really much but i hope this helps
Answer:
Hair standing up
Explanation:
When there is a lot of static electricity, your hair stands up.
Nuclear Fission vs nuclear fusion worksheet answers
under which conditions do you expect a sample of gas to behave most ideally?A) high temperature and low pressure.B) low temperature and high pressure.C) high temperature and high pressure.D) low temperature and low pressure.
Under option A) high temperature and low pressure, the sample of gases are expected to behave like an ideal gas.
The definition of an ideal gas is a gas whose molecular volume and intermolecular forces are so small that it does not affect the behavior of the gas.
A real gas is one that disobeys the gas laws under any conventional pressure and temperature conditions. As the gas grows large and voluminous, it departs from its optimal behaviour.
At higher temperatures and lower pressures, a gas typically behaves more like an ideal gas because the potential energy from intermolecular forces is less significant compared to the kinetic energy of the particles and the size of the molecules is less significant compared to the void space between them. Hence, option A is the answer.
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One airplane carries a charge of -5.0 C and another airplane carries a charge of 1.0 C. The magnitude of the
electric force between them is 6.0 x 10^3 N.
Calculate the distance between these two charged objects.
Write your answer using two significant figures.
The distance between these two charged objects is 520 m.
The electric force between two charged objects is given by the equation of Coulomb's law as follows:
F = (k * q₁ * q₂ )/ r²
k = Coulomb constant (8.988 x 10⁹ Nm²/C²)q₁ = charge of object 1q₂ = charge of object 2r = distance between both objectIn the case above, the charges of each object are -5.0 C (for object 1) and 1.0 C (for object 2). The magnitude of the electric force (F) is 6.0 x 10³ N.
Plug these numbers into the equation to find the distance (r) :
6.0 x 10³ = (8.988 x 10⁹ * -5.0 * 1) / r²
r = 5.2 x 10² m or 520 m.
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what type of waves move energy forward, but the source moves up and down?
Answer:
Transverse waves
Explanation: