The metal item is heated evenly and fully by allowing the water to stabilise, guaranteeing that any heating effects are realised.
Depending on the metal's thermal conductivity and specific heat capacity, when a metal item is submerged in boiling water, it warms up and may even reach a temperature greater than the boiling point of water.
The metal object's high temperature can cause the water around its surface to evaporate quickly when it is abruptly withdrawn from the boiling water. This can result in bubbles that can burst forcefully and cause splattering.
Burns or other damage may arise from this.
The metal and the water are at the same temperature and there is no longer a temperature gradient between them when the water is allowed to reach its boiling point before the metal item is removed.
As a result, there will be less severe water vaporisation, which lowers the possibility of splattering and harm.
Additionally, letting the water to stabilise guarantees that any intended effects of the heating are realised and that the metal item is heated evenly and fully.
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The lowest note on a grand piano has a frequency of 27.5 Hz. The entire string is 2.00 m long and has a mass of 440g . The vibrating section of the string is 1.90m long.What tension is needed to tune this string properly?
The tension needed to tune a grand piano string with a frequency of 27.5 Hz and a length of 1.90 m is 5,129 N.
The tension required to tune the string can be calculated using the following formula:
T = (mu * v^2) / L
Where T is the tension, mu is the string's linear mass density (mass per unit length), v is the wave's speed on the string, and L is the span of the string's vibrating portion.
To begin with, we must figure out the string's linear mass density:
mu = m/L = 0.440 kg/1.8 m = 0.2316 kg/m
The speed of the wave on the string needs to be calculated next. The equation: gives the speed of a wave on a string.
sqrt(T/u),
T represents tension, and u represents linear mass density. This equation can be changed to:
T = u
The tension required to tune the string can be calculated using the following formula:
T = (mu * v^2) / L
Where T is the tension, mu is the linear mass density of the string (mass per unit length), v is the speed of the wave on the string, and L is the length of the vibrating section of the string.
First, we need to calculate the linear mass density of the string:
mu = m / L = 0.440 kg / 1.90 m = 0.2316 kg/m
Next, we need to calculate the speed of the wave on the string. The speed of a wave on a string is given by the formula:
v = sqrt(T/u)
where T is the tension and u is the linear mass density. Rearranging this equation gives:
T = u * v^2
Substituting in the values we have:
v = f * lambda
where f is the frequency and lambda is the wavelength of the wave. The wavelength can be calculated from the length of the vibrating section of the string:
lambda = 2 * L = 3.80 m
Substituting in the values we have:
v = f * lambda = 27.5 Hz * 3.80 m = 104.5 m/s
Now we can calculate the tension:
T = u * v^2 / L = 0.2316 kg/m * (104.5 m/s)^2 / 1.90 m = 5,129 N
Therefore, the tension needed to tune this string properly is 5,129 N.
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what is the angular displacement formula?
Angular displacement is defined as “the angle in radians (degrees, revolutions) through which a point or line has been rotated in a specified sense about a specified axis”.
Formula:
S = rθ
∴ S = arc length
r = distance
θ = angular displacement
Prescription glasses do not provide adequate eye protection because they:
Select one:
A. do not have shatterproof lenses.
B. have large rounded lenses.
C. offer little or no side protection.
D. are not secured with a strap.
Answer:
They do not have shatterproof lenses. Safety glasses are required to protect the eye from weather such as sandstorms and blizzards, or from hazards like sparks, and from impact especially, which is why the shatterproof lenses are needed. Prescription glasses, on the other...eye? Are made to mitigate or correct vision deformities such as near-sightedness or blurriness. These lenses are not made, nor required, to physically protect your eyes, but instead provide clarity of vision.
Prescription glasses do not provide adequate eye protection because they do not have shatterproof lenses. So, option A.
Safety glasses provide a different function than the prescription glasses.
Safety glasses must adhere to greater standards than conventional prescription eyeglasses in terms of impact resistance in order to be considered. The vast majority of prescription eyeglasses won't match up to this requirement.
Correcting eyesight is the main function of prescription glasses. Although they don't correct eyesight, safety glasses protect the eyes.
Regular prescription glasses cannot be used as eye protection in laboratories since they do not offer sufficient protection against potential dangers.
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what is grandfather paradox alteration?
The grandfather paradox alteration is a concept in the field of time travel that explores the consequences of a person traveling back in time and altering events in such a way that it prevents their own existence.
The paradox arises when a person travels back in time and kills their own grandfather before their father or mother is conceived, thereby preventing their own birth. This creates a paradox because if the person never existed, they could not have traveled back in time to alter events in the first place.
The grandfather paradox alteration is often used to explore the potential dangers and implications of time travel, as well as the concept of causality and how it relates to time. It is also used to examine the idea of alternate timelines and how changes in the past can create a different present or future.
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Some thermometers contain alcohol. Alcohol is used in thermometers because A. is soluble in waterB. is a clear gas when it evaporatesC. expands and contracts easilyD. has a high density
A rate law that is proportional to the concentration of reactants raised to a power, which corresponds to the reactant's stoichiometric coefficient, is often used to describe reactions that can occur in a single step.
What is the reaction's rate constant, 2N2O5 to 2N2O4 O2?rk = [N2O5] = 2.40 10 53.0 10 5 = 0.8 mol L 1. Calculate the concentration of N2O5 using the reaction's rate and rate constant, which are 2.40 mol L-1 second-1 and 3 mol L-5 second-1, respectively.
What happens when 2O3 and 3O2 react in what order?The following is how the chemical reaction 2O3 3O2 develops. The appropriate expression for the rate law is O3 O2 +O (FAST) O+O32O2 (SLOW).
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What is the magnitude of the magnetic field?
The strength or intensity of the magnetic field at a given place in space is referred to as its magnitude.
It is measured in teslas (T) or gauss (G) units, depending on the measuring technique employed. Because the magnetic field is a vector quantity, it possesses both magnitude and direction.
The size of the magnetic field is governed by several parameters, including the current or magnetic charge that generates the field, the distance from the source of the field, and the field's direction with regard to the measuring device.
Magnetic field magnitude can be determined using mathematical methods that account for these parameters, such as the Biot-Savart law or Ampere's law.
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Helpppppppppppppppppp
Answer:
2,3,4,6
Explanation:
To answer this question, access the interactive simulation "Planetary Orbits Simulator".
Click the "reset" button near the top of the control panel, set parameters for Mercury, and then click on the "Kepler's 3rd Law" tab at the bottom of the control panel. Select "show solar system orbits" in the Visualization Options panel. Study the graph in the Kepler's 3rd Law tab. Use the eccentricity slider to change the eccentricity of the simulated planet. First, make the eccentricity smaller and then larger.
What does the change in the period with respect to the eccentricity tell you about the dependence on the period on the eccentricity?
A. The period depends inversely on the eccentricity.
B. The period depends directly on the eccentricity.
C. The period does not depend on the eccentricity.
D. The graph does not indicate anything about the dependence.
The eccentricity tell you about the dependence on the period on the eccentricity ; The period depends directly on the eccentricity.
What is the eccentricity ?Eccentricity is a measure of how much an ellipse deviates from a perfect circle. It is defined as the ratio of the distance between the two foci of an ellipse to the length of its major axis. The eccentricity of a circle is zero, while any other ellipse has an eccentricity greater than zero but less than one. Eccentricity is used to quantify how elongated an ellipse is, with higher eccentricity indicating a more elongated shape. Eccentricity can also be used to describe the orbits of planets and other celestial bodies, with higher eccentricity indicating a more elongated orbit.
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The fastest pitched baseball was clocked at 47 m/s. Model the throw as being caused by a constant, horizontal force over a distance of 1. 0 m. A baseball has a mass of 150 g.
The force the pitcher exerts on the ball during this record-setting pitch is 160.15 N. The force exerted on the baseball as a fraction of the pitcher's weight is 0.195.
What is a force?Concepts related to force include thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque, which produces changes in the rotational speed of an object. In an extended body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is internal mechanical stress.
The given parameters;
the initial velocity of the baseball, u = 47 m/s
distance traveled by the ball, d = 1 m
mass of the baseball, m = 145 g = 0.145 kg
The free-body diagram of the ball during the pitch is in the image added.
The acceleration of the baseball over the given distance is calculated as;
v² = u² - 2as
when the ball stops, the final velocity, v = 0
0 = u² - 2as
2as = u²
a= u²/2s
a = 1140.5 m/s²
The force the pitcher exerts on the ball during this record-setting pitch is calculated as;
F = ma
F = 0.145 x 1,104.5
F = 160.15 N.
The weight of the pitcher is calculated as;
W = mg
W = 84 x 9.8
W = 823.2 N
The force exerted on the baseball as a fraction of the pitcher's weight is calculated as follows;
n = 160.15/823.2 = 0.195
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Two large, charged plates with charge density ±30µC/m^2 face each other with a separation of 5.0 mm. The negative plate is grounded, and defined as 0 potential. Find the electric potential at a location 8.0mm from the negative plate, 3.0mm from the positive plate.
The potential at the given location is 72.5 V higher than the potential at the negative charged plate.
To find the electric potential at the given location, we need to use the formula for the electric potential due to a charged plate, which is:
V = σ/(2ε₀) * [tex]((1 + d)/\sqrt{d^2 + a^2} )[/tex]
where V is the electric potential, σ is the charge density, ε₀ is the electric constant, d is the distance from the plate, and a is the distance between the plates.
First, we need to find the potential at the negative plate, which is defined as 0. This means that the potential difference between the negative plate and the given location is equal to the potential at the given location. So, we only need to calculate the potential difference between the positive plate and the given location.
Using the formula above, we can calculate the potential at the given location as:
V = ([tex]30 microC/m^{2}[/tex]) / (2ε₀) * [tex]((1 + 8 mm)/\sqrt{8^2 + 5^2} )[/tex] - ([tex]30 microC/m^{2}[/tex]) / (2ε₀) * ([tex](1 + 3 mm)/\sqrt{3^2 + 5^2})[/tex]
where ε₀ is approximately[tex]8.85 * 10^(-12) F/m.[/tex]
Plugging in the numbers and solving, we get:
V ≈ 72.5 V
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An element crystallizes in a face-centered cubic lattice and has a density of 1. 456 g/cubic. The edge of its unit cell is 4. 52 x 10-8 cm. What is the mass of a unit cell ?.
The mass of a unit cell is 6.65 x 10⁻²³ g.
What is mass?
Mass is a measure of the amount of matter in an object. It is a scalar quantity, meaning it has only magnitude and no direction. Mass is often used interchangeably with weight, although they are different concepts. While mass is a measure of the amount of matter in an object, weight is the force exerted on an object due to gravity.
The mass of a unit cell can be calculated using the formula:
mass = density x volume
The volume of a face-centered cubic (FCC) unit cell can be calculated as follows:
volume = (edge length)^3
Substituting the given values, we get:
volume = (4.52 x 10⁻⁸ cm)³ = (4.52 x 10⁻⁸)³ cm³ = (4.52 x 10⁻²⁴) cm³
And the mass of a unit cell is:
mass = density x volume = 1.456 g/cm³ x 4.52 x 10⁻²⁴ cm³ = 6.65 x 10⁻²³g
So the mass of a unit cell is 6.65 x 10⁻²³ g.
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(4\%) Problem 3: A uniform electric field of magnitude 42 N/C is parallel to the x axis. A circular loop of radius 24 cm is centered at the origin with the normal to the loop pointing 55 ∘ above the x axis. - $50% Part (a) Calculate the electric flux in, newton squared meters per coulomb, through the loo Φ= N⋅m 2 /C Hints: deduction per hint. Hints remaining: 2 Feedback: deduction per feedback.
The electric flux through the loop is approximately 3.42 newton squared meters per coulomb (N·m^2/C).
The electric flux through a surface is given by the product of the electric field passing through the surface and the area of the surface,
Φ = EAcos(θ)
where Φ is the electric flux, E is the electric field, A is the area of the surface, and θ is the angle between the electric field and the normal to the surface.
In this problem, the electric field is parallel to the x-axis, so its angle with the normal to the circular loop is θ = 55°.
The area of the circular loop is A = πr^2, where r is the radius of the loop. Thus, the electric flux through the loop is:
Φ = EAcos(θ)
= (42 N/C)(π(0.24 m)^2)*cos(55°)
≈ 3.42 N·m^2/C
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--The complete question is, A uniform electric field of magnitude 42 N/C is parallel to the x axis. A circular loop of radius 24 cm is centered at the origin with the normal to the loop pointing 55 ∘ above the x axis.
(a) Calculate the electric flux in, newton squared meters per coulomb, through the loop.--
which of these illustrates potential energy due to gravity being converted into kinetic energy?a.a hammer dropped off a roof accelerates as it fallsb.a burning log heats a container of waterc.a rubber band becomes harder to pull as it is stretched fartherd.cell in the body convert food molecules.
The following illustrates potential energy due to gravity being converted into kinetic energy : a. hammer dropped off a roof accelerates as it falls.
What illustrates potential energy due to gravity being converted into kinetic energy?Hammer dropped off a roof accelerates as it falls illustrates potential energy due to gravity being converted into kinetic energy. When the hammer is dropped, potential energy due to its position above the ground is converted into kinetic energy, which is the energy of motion, as it falls and accelerates towards ground.
If the rock falls from the cliff, the potential energy will be converted to kinetic energy, as the rock will be moving. When the elastic string in a longbow is released, it will cause the arrow to shoot forward.
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Applying the process of scientific inquiry to find answers for yourself is called scientific _________.
Applying the process of scientific inquiry to find answers for yourself is called scientific investigation.
What is the process of Scientific investigation?
This process typically involves the following steps:
Formulating a question or problem to be investigatedConducting background research to gather information and understand the current state of knowledgeDeveloping a hypothesis to make predictions about the outcome of the investigationDesigning and conducting experiments to test the hypothesisAnalyzing the data and forming conclusions based on the evidenceCommunicating the results to others through publications or presentationsScientific investigation is the process of using systematic and systematic methods to gather evidence, test hypotheses, and form conclusions about natural phenomena. It is a self-directed process where a scientist sets out to answer questions, solve problems, or test theories. By using the scientific method, scientists can ensure that their investigation is systematic, controlled, and reliable, and that their conclusions are based on evidence and data.
Therefore, scientific investigation is the correct answer.
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How many watts of power does Jim's car use if it does 1675 joules of work in carrying a boat for 8.9 seconds?
Answer:
8.6
Explanation:
the particle, initially at rest, is acted upon only by the electric force and moves from point a to point b along the x axis, increasing its kinetic energy by 1.12×10−18 j . in what direction and through what potential difference vb−va does the particle move?
Particle moves from point a to point b in direction of increasing electric potential, and potential difference between point a and point b is positive.
Electric force is conservative, so work done by electric force is equal to change in potential energy. We know that ΔK = 1.12×10−18 J, and since the particle is initially at rest, its initial kinetic energy is zero. 1.12×10−18 J = -ΔU or ΔU = -1.12×10−18 J
Since electric force work on particle as it moves from point a to point b, the electric potential at point b is higher than point a. Therefore, particle moves from point a to point b in direction of increasing electric potential.
ΔV = [tex]Vb - Va[/tex]
ΔV = [tex]Vb - Va > 0[/tex]
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Which choice names two ways nonmetallic minerals can be used?A)industrial processes and gemsB)conductors and for industrial purposesC)wiring and gems
The choice names two ways nonmetallic minerals can be used industrial processes and gems
option A
Non-metallic minerals can be utilized as jewels and in industrial operations. Some non-metallic minerals are highly valuable, well-cut, and fetch a premium on the market. Ruby and tourmaline are two examples. Most non-metallic minerals are employed as raw materials in industrial processes. Due to their weak conductivity, these materials cannot be utilized as ones. Because they lack metallic links inside their lattices, they cannot be utilized for wiring.
Since they are of excellent gem grade, they are best employed in industrial operations and for items of value. Numerous industrial uses exist for calcium carbonate in its different forms. In addition to being utilized as a construction material, limestone also serves as a flux in metallurgy and is used to produce calcium cyanamide and lime.
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a car accelerate from rest to a speed of 3600m/s in 20 second what is the acceleration of the car?
Formula and solution pls
Answer:
Explanation:
The formula for acceleration is:
a = (v_f - v_i) / t
Where:
a = acceleration
v_f = final velocity
v_i = initial velocity (in this case, 0 m/s since the car started from rest)
t = time
Plugging in the given values, we get:
a = (3600 m/s - 0 m/s) / 20 s
a = 180 m/s^2
Therefore, the acceleration of the car is 180 m/s^2.
Line a is parallel to line b. If the
measure of 27 is 114°, what is the
measure of 41?
21
34
65
114°= 78
a
b
The measure of angle 3 is given as 114 degrees
What is an angleAn angle is a geometric figure formed by two rays or lines that share a common endpoint called the vertex. The rays or lines that form the angle are referred to as the arms or sides of the angle. Angles are typically measured in degrees (°) or radians, and the measure of an angle indicates the amount of rotation between the two arms or sides, starting from one arm and rotating around the vertex to reach the other arm.
Line a and line b are parallel.
< 7 = 114°
The value of 3 measured as
= < 7
Having similar angles, = 114°
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What law states that energy cannot be created nor destroyed?
Answer:
Law of conservation of energy
what is physics-based data analysis models for large datasets ?
Physics-based data analysis models for large datasets are mathematical and computational methods used to analyze and interpret data from large and complex systems. These models are used to understand the underlying physics of the system and to make predictions about its behavior.
There are several different types of physics-based data analysis models for large datasets, including statistical models, machine learning models, and computational fluid dynamics models. Each of these models uses different techniques and algorithms to analyze and interpret the data.
Statistical models use statistical methods to analyze the data and make predictions about the system. These models are often used to understand the relationship between different variables in the system and to make predictions about future behavior.
Machine learning models use algorithms to learn from the data and make predictions about the system. These models are often used to classify data into different categories and to make predictions about future behavior.
Computational fluid dynamics models use numerical methods to simulate the behavior of fluids and gases in the system. These models are often used to understand the flow of fluids and gases in the system and to make predictions about future behavior.
Overall, physics-based data analysis models for large datasets are important tools for understanding and predicting the behavior of complex systems.
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the ability of an object to maintain its balance is known as ___________
An object's capacity to keep its balance after being shaken up is referred to as stability. An object's center of gravity plays a major role in determining how stable it is.
Why does gravity have a force?However, gravity is a force in the broadest sense since it defines the interaction that results when two masses are in close proximity to one another. The warping of spacetime and the motion of things through the stretched spacetime are the primary causes of gravitational effects. It appears as though a force was exerted towards the end, though.
What is the simple explanation of gravity?According to the theory, every particle of matter pulls toward every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of their distance from one another.
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What are the 5 stages of the allegory of the cave?
The five stages of the allegory of the cave are: (1) the prisoners' initial state of ignorance, (2) the introduction of a new reality, (3) the prisoners' resistance to the new reality, (4) the prisoners' acceptance of the new reality, and (5) the prisoners' transformation and enlightenment.
The first stage is their initial state of ignorance. In the second stage, one of the prisoners is freed and shown the outside world. This introduces a new reality that the other prisoners are unaware of. The third stage is the prisoners' resistance to this new reality.
They refuse to believe that what they see is true. The fourth stage is their acceptance of the new reality, and the fifth stage is their transformation and enlightenment, where they understand the truth and become enlightened. The allegory represents the journey from ignorance to knowledge and the difficulties one faces in accepting and understanding new truths.
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a block of wood is floating with one half of its volume out of the water. then it is pushed down so that it is completely underneath the water. use your understanding of buoyant force and archimedes’ principle to determine what happens to the forces on the block of wood.A. The buoyant force on the block is the same in the two cases because the weight per unit volume of the wood has not changed.
B. The buoyant force on the block is the same in the two cases because the weight per unit volume of the water is the same in each case.
C. The buoyant force on the block is greater when the block is completely submerged than it is when the block is floating.
D. The buoyant force on the block is greater when it is floating than when it is totally submerged.
E. The buoyant force on the block is the same in the two cases because the block loses weight as it is submerged.
The force that occurs in a wooden block is the buoyant force on the block is greater when the block is completely submerged than it is when the block is floating.
So Archimedes' Law explains that there is a relationship between weight and upward force on a force if it is put in water. As a result of the upward lift (buoyancy), of course, objects that are in the liquid will experience a weight reduction. As a result, objects lifted in water will feel lighter than when lifted on land.
When submerged, the weight of the object in the liquid is greater than the upward force exerted by the liquid.
So, the compressive force of water < the weight of the object, and the correct answer is C.
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whats the scientific method in order
Answer:
See explanation
Explanation:
Observe, question, research, hypothesize, experiment, review hypothesis, report results.
what is the reading w2 of the scale when the ball is held in this submerged position? assume that none of the water that spills over stays on the scale.
The reading W2 of the scale when the ball is held in this submerged position is 1.00 N.
As the ball is held up mainly by the rod, the fluid pressure on the bottom of the cylinder is entirely the same as before.
The scale doesn't "know" the ball is there ever.
That's why it still reads 1 N.
Thus, the reading is 1 N
The extra force that is exerted by the ball on the water is equal to the force that the water exerts on the ball, i.e., the weight of the displaced water.
Therefore, the reading does not change.
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Which one of the following properties most fundamentally distinguishes mechanical waves from electromagnetic waves? a. Mechanical waves have crests and troughs. b. Mechanical waves require a medium for propagation. c. Mechanical waves have well-defined wavelengths
b. Mechanical waves require a medium for propagation.
What are mechanical waves?Mechanical waves, such as sound waves and ocean waves, require a physical medium, such as a solid, liquid, or gas, for their propagation. This means that they can only travel through a material and cannot exist in a vacuum. On the other hand, electromagnetic waves, such as light and radio waves, do not require a medium for propagation and can travel through a vacuum.
Both mechanical and electromagnetic waves can have crests and troughs and well-defined wavelengths, but the requirement of a medium for propagation is what fundamentally distinguishes them. This property of mechanical waves has important implications for their behavior and interaction with matter, such as the way they can be absorbed, reflected, refracted, or diffracted by different materials.
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If an atom has an atomic number of 87 and a mass number of 223, how much is the number of neutrons?.
The atomic number of francium is 87. This indicates that each francium atom has 87 protons and the equal amount of electrons in its nucleus. Francium has an atomic mass of 223 and 136 neutrons.
Mass is what?In physics, mass is a quantitative expression of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the applying of a force.
How is mass determined?A balance is the instrument you'd use to calculate mass. A triple beam balanced or a measuring cylinder may be used in the lab to measure mass, but the traditional balance shown below could help you understand what mass is.
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if the electric flux through a closed surface is zero, the electric field at points on that surface must be zero.
True, if the electric flux through a closed surface is zero, the electric field at points on that surface must be zero.
What does a closed surface's electric flux look like?
The charge encapsulated divided by the permittivity is equal to the total electric flux out of a closed surface. The electric field is multiplied by the surface area projected in a plane perpendicular to the field to get the electric flux across a region.
If there is a net outward flow, the electric flux through a closed surface is positive; if there is a net inward flow, it is negative. If there is a source inside the closed surface, we have a net outward flux, and if there is a sink inside the closed surface, we have a net inward flux. Zero field implies zero flux, but zero flux does not imply zero field.
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Fill in the blank: Scientists worried that cloned animals would age rapidly because their cells contain ________ as old as the individual they were cloned from.
Scientists worried that cloned animals would age rapidly because their cells contain Clones as old as the individual they were cloned from.
What are Clones?Cloning is a method that scientists employ to make genetically identical copies of genes, cells, or even whole animals.
There are already some clones in nature. When single-celled organisms like bacteria reproduce, they create identical copies of themselves every time. Identical twins in humans are comparable to clones. They have nearly identical genes.
In the lab, scientists also create clones. Genes are frequently cloned for study and improved comprehension. Researchers take DNA from a living thing and place it into a carrier like bacteria or yeast to clone a gene.
Therefore, Scientists worried that cloned animals would age rapidly because their cells contain Clones as old as the individual they were cloned from.
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