The responding variable in this experiment on adding salt to bottles of water is C. The time it takes for the water to boil.
How to find the responding variable ?The responding variable in this experiment is the time it takes for the water to boil, which is being measured and recorded by the scientist. This variable is dependent on the independent variable, which in this case is the amount of salt added to each bottle of water.
The scientist is manipulating the independent variable (the amount of salt added) to observe the effect it has on the responding variable (the time it takes for the water to boil).
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the layer of earth that is the solid outermost portion and is part of the mantle and crust is called
The layer of the earth that is the solid outermost portion and is part of the mantle and crust is called the lithosphere.
The lithosphere is a rigid, solid layer that includes the entire crust and the uppermost part of the mantle. It is divided into several large plates that move and interact with each other at the boundaries, resulting in geological events such as earthquakes, volcanic eruptions, and the formation of mountain ranges.
The lithosphere is characterized by its physical properties, including its rigidity, thickness, and chemical composition. It is made up of a variety of rock types, including sedimentary, metamorphic, and igneous rocks, and it varies in thickness from about 5 to 100 kilometers depending on location. Overall, the lithosphere is a crucial component of the Earth's structure and plays an important role in shaping the planet's geological features and supporting life on Earth.
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describe the similarities and differences between spring and neap tides. in your response, be sure to describe the sun, moon, and earth’s alignment.
Answer:
See explanation
Explanation:
Neap Tides: When the sun and moon form a right angle with the earth.
Spring Tides: When the sun, earth and moon all line up.
Both happen twice a year.
What happens at the Orbiter Processing Facility?
The Orbiter Processing Facility (OPF) is a specialized facility used by NASA to prepare and maintain space shuttles.
When a space shuttle completes a mission and returns to Earth, it is transported to the OPF for inspection, maintenance, and upgrades before being prepared for its next mission.
The OPF is divided into three main sections: the high bay, the low bay, and the logistics area. The high bay is where the shuttle is stored and where most of the maintenance work takes place. This area has a large crane that can lift the shuttle and move it to different positions. The low bay is where the landing gear, engines, and other equipment are stored and maintained. The logistics area is where supplies and equipment are stored and where technicians work on computer systems and other support equipment. During processing, technicians inspect and repair the shuttle's systems and components, including the engines, flight control systems, and life support systems. They also upgrade the shuttle's hardware and software to improve its performance and increase its safety. The shuttle is then tested to make sure that it is functioning properly. Once the shuttle has been processed, it is transported to the Vehicle Assembly Building (VAB) where it is mated with the external fuel tank and solid rocket boosters to create the complete launch vehicle. The entire assembly is then transported to the launch pad for final preparations before launch.
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A large truck of mass 4m is traveling at a speed of v when it collides with a small car of mass m that is at rest. The truck and car stick together after the collision.
The correct option is D, The truck and car stick together after the collision. During the collision the car and truck exert forces on each other. The forces the truck and car exert on each other must be internal to the truck-car system because the momentum of the center of mass of the truck-car system stays the same.
The center of mass is a point that represents the average location of the mass of an object or system. It is the point at which an object can be balanced and remains at rest, even when subjected to external forces. The center of mass is an important concept in physics as it helps to describe the motion of a system, and also to understand the dynamics of collisions and other interactions between objects.
The position of the center of mass depends on the distribution of mass within the object or system. In a simple case, such as a uniform solid object, the center of mass will be at the geometric center of the object. However, in more complex cases, such as a non-uniform object or a system of multiple objects, the center of mass may be located at a different point.
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Complete Question: -
A large truck of mass 4M is traveling at a speed of V when it collides with a small car of mass M that is at rest. The truck and car stick together after the collision. During the collision, the car and truck exert forces on each other. Which of the following is a correct statement about these forces and gives evidence to support this statement?
A. The forces the truck and car exert on each other must be external to the truck-car system because the momentum of the truck changes.
B. The forces the truck and car exert on each other must be external to the truck-car system because the momentum of the car changes.
С. The forces the truck and car exert on each other must be external to the truck-car system because the momentum of both the truck and car change.
D. The forces the truck and car exert on each other must be internal to the truck-car system because the momentum of the center of mass of the truck-car system stays the same.
E. The forces the truck and car exert on each other must be internal to the truck-car system because the momentum of the center of mass of the truck-car system changes.
state the equation of continuity.
Answer:
ρ A v = constant.
The equation proves the law of conservation of mass in fluid dynamics. Also, if the fluid is incompressible, the density will remain constant for steady flow. So, ρ1 =ρ2.
The air pressure in a tank is measured using an inclined manometer whose arm is inclined 45 degree from the horizontal line. The densities of the air and water are 1.225 kg/m3 and 1000 kg/m3, respectively. Determine the gauge pressure of air in the tankA) 501 Pa B) 416 PaC) 588 Pa D) 0.510 Pa
The gauge pressure of the air in the tank is 501 Pa. Option A is correct.
The gauge pressure of air in the tank can be determined using the following formula: ΔP = ρgh
To calculate the height difference, we need to use the fact that the arm of the manometer is inclined at a 45 degree angle from the horizontal.
h = (h2 - h1) * sin(45)
To calculate the heights of the fluid columns, we need to use the fact that the pressures at the bottom of each column must be equal:
P1 + ρwatergh1 = P2 + ρairgh2
Since the manometer is open to the atmosphere, we can assume that P1 and P2 are both equal to atmospheric pressure, which we can take to be 101,325 Pa.
Solving for h1 and h2, we get:
h1 = (P2 - P1) / (ρwaterg) = (0 - 101325) / (1000 * 9.81) = -10.32 m (negative because the water level is lower than atmospheric pressure)
h2 = (P1 - P2) / (ρairg) = (0 - 101325) / (1.225 * 9.81) = -8333.33 Pa
Substituting these values into the equation for h, we get:
h = (h2 - h1) * sin(45) = (-8333.33 + 10.32) * sin(45) = -4145.88 Pa
Finally, substituting h into the equation for ΔP, we get:
ΔP = ρgh = (1.225)(-4145.88) = -5073.53 Pa
|ΔP| = 5073.53 Pa
Therefore, the gauge pressure of the air in the tank is approximately 501 Pa.
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The earliest known measurement of the circumference of the Earth used
Find the area of the surface generated when the given curve revolved about the x-axis.y=8√xon [9,20]
The area of the surface generated is approximately 1180.89 square units.
To find the area of the surface generated when the curve y = 8√x is revolved about the x-axis, we can use the formula:
[tex]A = 2\pi \int_a^b y ds[/tex]
where a and b are the limits of integration, y is the function to be revolved, and ds is an element of arc length.
To find ds, we can use the formula:
[tex]ds = \sqrt{1 + {(\dfrac{dy}{dx}})^2} dx[/tex]
where dy/dx is the derivative of y with respect to x.
In this case, we have y = 8√x,
So dy/dx = 4/√x.
Therefore, [tex]ds = \sqrt{1 + \dfrac{4}{\sqrt{x}}^2} dx[/tex]
[tex]= \dfrac{4}{\sqrt x} \times \sqrt{x+4}\ dx[/tex]
Substituting this into the formula for the surface area, we get:
[tex]A = 2\pi \int_9^{20} y \times 4/√x \times \sqrt{x+4} dx\\= 8\pi \int_9^{20} \sqrt x \times \sqrt{x+4}\ dx\\= 8\pi \int_9^{20} (x+4) dx\\= 8\pi [\dfrac{1}{2}\times (20^2+420) - \dfrac{1}{2}\times (9^2+49)][/tex]
= 1180.89
Therefore, the area of the surface generated is approximately 1180.89 square units.
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When a boxer moves into an oncoming punch, the force experienced is
decreased
increased
no different, but the timing is different
all of the above
When a boxer moves into an oncoming punch, the force experienced is increased due to less time period of contact.
When a mass moves in the space, it carries some momentum and the momentum is defined as per the second law of motion by Newton in the following manner,
Force = change in momentum/time of contact
Change in momentum = force x time of contact.
If the force is constant, the time of contact will decide the amount of momentum.
When the boxer moves into an oncoming punch, the force experienced is increased because the time period of the contact is decreased to a very low level.
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what does the change in the period with respect to the eccentricity tell you about the dependence of the period on the eccentricity?
A larger change in the period with respect to the eccentricity indicates a stronger dependence of the period on the eccentricity, while a smaller change indicates a weaker dependence.
Kepler's third law states that the square of the period of an orbit is proportional to the cube of the semi-major axis of the orbit.
T^2 ∝ a^3
When the eccentricity of an orbit changes, it affects the shape of the orbit and hence the value of the semi-major axis. Therefore, we can expect that the period of the orbit will also be affected by changes in eccentricity.
This is because a more eccentric orbit has a longer semi-major axis, which means the object in orbit will take longer to complete one revolution around its companion.
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The disk in a computer drive spins up from rest to a final angular speed of 4900 rpm in 2. 20 s. What is the angular acceleration of the disk?.
First, we need to convert the final angular speed of the disk from revolutions per minute (rpm) to radians per second. We can do this by multiplying the final angular speed by 2π/60.
How to calculate angular speed ?f = 4900 rpm divided by 2/60 equals 514.87 rad/s
Next, we may apply the equation shown below to determine the disk's angular acceleration:ωf = ωi + αt
where t is the time it takes for the disc to achieve its final angular speed, is the disk's angular acceleration, and I is the starting angular speed of the disc, which is 0 because it starts at rest.Inputting the values provided yields:514.87 rad/s = 0 + α × 2.20 s
By solving for, we obtain:
234.03 rad/s2 = 514.87 rad/s / 2.20 s
As a result, the disk's angular acceleration is roughly 234.03 rad/s2.
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what is thomasville langdon fabric sectional with storage ottoman?
The Thomasville Langdon Fabric Sectional with Storage Ottoman is a piece of furniture designed for use in a living room or family room.
It is a sectional sofa made by the Thomasville Furniture company and features a contemporary design with clean lines and plush cushions. The sectional is upholstered in a soft, durable fabric that is available in several colors, and it includes a storage ottoman that can be used to store blankets, pillows, or other items. The Langdon sectional also features reversible seat and back cushions, which allows the owner to extend the life of the cushions by flipping them over periodically.
Overall, the Thomasville Langdon Fabric Sectional with Storage Ottoman is a comfortable and functional piece of furniture that can add style and convenience to any living space.
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How does melting point determine purity?
The melting point determination is a commonly used technique for assessing the purity of organic compounds, as the melting point of organic compounds is generally very sensitive to the presence of impurities.
The melting point of a substance is the temperature at which it changes from a solid to a liquid state. The melting point of a pure substance is a well-defined and specific temperature, whereas the melting point of an impure substance will be lower and less specific. This is because impurities disrupt the ordered structure of the substance and make it more difficult to maintain a consistent temperature during melting.
By measuring the melting point of a substance and comparing it to the known melting point of the pure substance, it is possible to determine the purity of the sample. If the measured melting point matches the known melting point, then the sample is likely to be pure. However, if the measured melting point is lower than the known melting point, then the sample is likely to be impure.
The degree to which the melting point is lowered can also provide information about the type and amount of impurities present in the sample. For example, a small amount of impurity may only lower the melting point slightly, whereas a large amount of impurity may cause a significant reduction in melting point.
Other methods for determining purity include chromatography and spectroscopy.
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How many ml means 1 oz?
Answer= 1 oz 29.6ml !!!!!!
under electrostatic conditions, an electric field intersects the surface of a conductor at a right angle. t/f
True. Under electrostatic conditions, an electric field intersects the surface of a conductor at a right angle.
Why do the electric field intersect a conductor at a right angle?This is because a conductor is a material that allows electric charges to flow freely on its surface, and the electric field inside a conductor is zero. When an electric field is present outside a conductor, it will produce an electric potential difference across the surface of the conductor, which will cause electric charges to redistribute themselves on the surface of the conductor until the electric field inside the conductor is zero.
This phenomenon is known as the electric field being screened by the conductor. The electric charges that are redistributed on the surface of the conductor will produce an electric field that opposes the original electric field, and this new electric field will intersect the surface of the conductor at a right angle. This means that the direction of the electric field at the surface of a conductor is always perpendicular to the surface of the conductor.
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why are equipotential lines perpendicular to electric field
Equipotential lines, which link locations in space that have the same electric potential, are always parallel to the lines of the electric fields.
A set of fictitious lines known as equipotential lines connects locations in space that share the same electric potential. The electric potential at a point is an indicator of the amount of electric potential energy per unit charge needed to transfer a charge from infinity to that location.
Since the electric potential in an electric field decreases in the direction of the electric field, the equipotential lines are parallel to the lines of the electric field. This is so because the direction of the electric field corresponds to the direction in which a positive test charge would go, whereas the direction of the equipotential lines corresponds to the direction in which a charge can move without exerting any effort.
If the electric field lines and equipotential lines were parallel, then the potential.
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why biologists often use the term energy source as a synonym for electron donor.
Biologists often use the term "energy source" as a synonym for "electron donor" because the transfer of electrons is a key component of energy generation in many biological systems.
In biological systems, energy is typically generated through a series of chemical reactions called cellular respiration. In this process, electrons are transferred between molecules, releasing energy that is used to power cellular processes. The molecule that donates electrons is known as the electron donor, and the molecule that accepts the electrons is known as the electron acceptor.
Since the transfer of electrons is the primary mechanism by which energy is generated in these systems, biologists often use the term "energy source" to refer to the electron donor. For example, in photosynthesis, the energy source is the electron donor (usually water), which donates electrons to the photosynthetic electron transport chain, generating energy that is used to create ATP and reduce carbon dioxide to produce organic molecules.
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where can glass/mercury thermometers measure temperature?
Glass/mercury thermometers can measure temperatures in the range of about -38°C to 370°C.
Glass/mercury thermometers can measure temperature within a specific range, typically from about -38°C to 370°C. However, the range of temperatures that a glass/mercury thermometer can accurately measure depends on factors such as the glass composition, the size of the bulb and the accuracy of the calibration.
For temperatures outside of this range, other types of thermometers are typically used. For example, thermocouples and thermistors can measure temperatures over a much wider range, from very low to very high temperatures, and are commonly used in industrial applications. Infrared thermometers can measure the temperature of an object without contact and can be used to measure the temperature of very hot or very cold objects.
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what is ft/min to m/s conversion?
Feet per minute (ft/min) and meters per second (m/s) are units of speed or velocity, with the former being more commonly used in some industries such as HVAC (heating, ventilation, and air conditioning).
To convert from ft/min to m/s, you can use the following conversion factor:
1 ft/min = 0.00508 m/s
Velocity is a measure of the rate at which an object changes its position with respect to time. It is a vector quantity, which means it has both magnitude and direction. Velocity is different from speed because speed only takes into account the magnitude of the change in position, while velocity also considers the direction of the change.
In physics, velocity is denoted by the symbol ‘v’ and is measured in meters per second (m/s) or other units such as miles per hour (mph), feet per second (ft/s), or kilometers per hour (km/h). It is calculated by dividing the displacement (change in position) of an object by the time taken for that displacement to occur.
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A Question 21 (1 point) Retake question
As you add more devices to a parallel circuit, what happens to RT and IT?
RT increases and IT decreases.
RT decreases and IT increases.
RT increases and IT increases.
RT decreases and IT decreases.
Submit Quiz
9 of 12 questions saved
The correct answer is: RT decreases and IT increases.
What happens to the total resistance and total current?
As more devices are added to a parallel circuit, the total resistance (RT) decreases because there are more paths available for the current to flow through, reducing the overall resistance in the circuit. This can be explained by the fact that each device adds a new path for current flow, which reduces the overall resistance.
However, the total current (IT) increases as more devices are added to a parallel circuit because the voltage across each device remains the same, and as the total resistance decreases, Ohm's Law dictates that the total current must increase to maintain the same voltage across the circuit.
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Operational definitions are encouraged in research in order to:answer choicesconform to the requirement of statistical analysisincrease the probability that experiments will succeedmake terms used in a study as explicit as possiblemake educational research more easily understood by laypersons
The correct answer is: make terms used in a study as explicit as possible.
What are Operational Definitions?Operational definitions are encouraged in research in order to make terms used in a study as explicit as possible. An operational definition is a precise, clear, and specific description of a term or concept, which defines it in terms of the operations or procedures used to measure or manipulate it. By providing an operational definition, researchers can ensure that all parties involved in the study have a common understanding of what is being studied, which can improve the reliability and validity of the results.
While operational definitions may also increase the probability of success in experiments and make educational research more easily understood by laypersons, these are not the primary reasons for their use.
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The rotational inertia of a pencil is greatest about an axis
a)about its end, like a pendulum.
b)about its midpoint, like a propeller.
c)along its length, where the lead is.
The rotational inertia of a pencil is greatest about an axis about its midpoint, like a propeller, option B.
What is a rotational inertia?""Rotational inertia," also known as "moment of inertia." Rotational inertia is a measure of an object's resistance to changes in its rotational motion, and is defined as the sum of the products of the masses of each particle composing an object and the square of their distances from a chosen axis of rotation.
The larger an object's rotational inertia, the harder it is to get it rotating, or to change its rotational speed.
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Select all that applySelect all the characteristics that the Renaissance motet and mass have in common.A. They have five parts, including the Kyrie.B. They are both sacred music.C. They use polyphony.D. They are performed by a chorus.
The characteristics that the Renaissance motet and mass have in common are:
B: They are both sacred music
C: They use polyphony
D: They are performed by a chorus
The Renaissance motet and mass are two important musical genres of the Renaissance period. Both are sacred music that use polyphony and are typically performed by a chorus. The motet is a polyphonic choral work that is usually short and sets a Latin text, often taken from the Bible or liturgy. The mass, on the other hand, is a longer work that sets the texts of the Catholic Mass Ordinary, including the Kyrie, Gloria, Credo, Sanctus, and Agnus Dei. Both genres demonstrate the elaborate contrapuntal writing, complex harmonies, and careful attention to text setting that are hallmarks of Renaissance music.
However, the statement "They have five parts, including the Kyrie" is not correct. The Renaissance motet and mass do not necessarily have five parts, and the Kyrie is not always included in motets.
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Interference pattern? An electron beam is aimed at two closely spaced slits. The beam is attenuated to produce only one electron per minute.
Aiming for two closely spaced slits, an electron beam is used. Only one electron per minute is produced by the beam due to attenuation. There is a pattern. Two close objects are the target of an
How does electron beam machining work?
In the process of electron-beam machining, high-velocity electrons are gathered into a focused narrow beam with a very great planar power density. The work piece is then the focus of the beam cross-section, which generates heat and causes the material to vaporize. Numerous metals can be properly cut or drilled using electron-beam machining.
Who electron beam is welding for?
The most seasoned expert in electron beam welding in Europe is EBP. We have developed our "Design for Manufacture" service and machining skills as more and more of our clients have requested that we supply the gear for their products. This is especially true for tough, elevated metals, which many machinists would not work with.
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In the metric system, each millimeter increment is equal to _____.answer choices1/1000 of a centimeter1/100 of a centimeter1/10 of a centimeter10 centimeters
In the metric system, each millimeter increment is equal to 1/10th of a centimeter.
What is the metric system, and importance of millimeter?The metric system is a system of units used to measure length, mass, time, and other physical quantities. The base unit of length in the metric system is the meter, and smaller units of length, such as the millimeter, are defined as fractions of the meter.
One millimeter is equal to 1/10 of a centimeter, which is equal to 0.1 cm. This relationship is based on the fact that there are 10 millimeters in one centimeter. In other words, 1 millimeter is one-tenth of a centimeter.
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Compose a 450-word response and a logic model to improve a community.
Include the following:
describe the problem and your proposed solution
describe inputs, practices, outputs, and outcomes (described and placed into a logic model)
describe actions that would need to be taken to acquire funding and specific proposed funding sources
describe ways you could assess the efficiency and effectiveness of the program or service
Logic models are useful tools for planning, implementing, managing, evaluating, and reporting on programmes.
What is the logic model?They aid in defining a program's intended impact and goals, the order in which expected effects are to occur, the actions that are to produce each effect, and the areas in that process and result assessments should be concentrated.
The immediate results of programme activities are called outputs, which can include the types, amounts, and goals of the services the programme is supposed to provide.
Therefore, they serve as gauges of how successfully you carried out your programme.
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In Exercises 27 evaluate the expression. Write your answer in scientific
notation and in standard form.
27. (4.3 x 10-4) (6 x 107)
Taking into account the scientific notation, the result of the multiplication (4.3 ×10⁻⁴) (6 ×10⁷) is 2.58×10⁴ or 25800.
Scientific notationScientific notation is a quick way to represent a number using powers of base ten.
The numbers are written as a product:
a×10ⁿ
where:
a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.n is an integer, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.Multiplication in scientific notation
To multiply numbers in scientific notation, first multiply the numbers that are not powers of 10, then multiply the powers of ten by adding the exponents. A new number will be produced by a different power of 10.
In this case:
(4.3 ×10⁻⁴) (6 ×10⁷)= (4.3×6)×10⁻⁴⁺⁷= 25.8×10³= 2.58×10⁴= 25800
Finally, the result of the multiplication is 2.58×10⁴ or 25800.
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A person places a cup of coffee on the roof of her car while shedashes back into the house for a forgotten item. When she returnsto the car, she hops in and takes off with the coffee cup still onthe roof. If the coefficient of static frictionbetween the coffee cup and the roof of the car is 0.22, what is the maximum acceleration the car canhave without causing the cup to slide? Ignore the effects of airresistance.
The car may accelerate to a maximum of 2.16 m/s2 before the coffee cup slides off the roof.
The maximum acceleration that the auto can have without causing the coffee mug to slide off the roof can be calculated using the measure of static disunion between the mug and the roof of the auto.
The formula for the maximum acceleration is
= μ_s * g
Whereμ_s is the measure of static disunion,
and g is the acceleration due to graveness,
roughly 9.81 m/ s2.
Substituting the given value of the measure of static disunion,
we have
= 0.22 *9.81 m/ s2 = 2.16 m/ s2.
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what is ice a metamorphic rock
Ice is not a metamorphic rock.
Metamorphic rocks are rocks that have undergone a change in their physical and/or chemical composition due to exposure to heat, pressure, or other agents of metamorphism.
As heat or pressure transform solid rock from one form into a new, denser type, metamorphic rock is created in its entirety. As minerals (in this case, ice) rearrange to produce new crystalline forms, a shift takes place. The important thing for glacial ice during this transition is that it doesn't turn into liquid water.
Ice, on the other hand, is simply frozen water and does not undergo any changes in composition. It can change its physical state from solid to liquid and back again, but it does not undergo metamorphism. Therefore, it is not classified as a metamorphic rock.
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One long wire carries a current of 20 a along the entire x axis. A second long wire carries a current of 25 a perpendicular to the xy plane and passes through the point (0, 4, 0) m. What is the magnitude of the resulting magnetic field at the point y = 2. 0 m on the y axis?.
2.5*10⁻⁶ T is the magnitude of the resulting magnetic field at the point y = 2. 0 m on the y axis
Define magnetic field.
The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is travelling through a magnetic field.
If you try to align the like poles of two magnets, you will quickly realize that the most fundamental law of magnetism states that similar poles repel one another and unlike poles attract one another.
B=μ0I/2πR
For x axis, magnetic field:
B1 = 2*10⁻⁷ *20 /2
B1 = 2*10⁻⁶
For magnetic field due to long wire perpendicular to xy plane:
B2 = 2* 10⁻⁷ * 25 /2
B2 = 2.5* 10⁻⁶
As both magnetic fields are said to be perpendicular to each other, net magnetic field is given by
B = √(B1² +B2²)
B = 2.5*10⁻⁶ T
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