The closest degree in which B is pointed when the vectors are added is calculated to be 221 degrees.
We have to find the vector B. We will substructure equations,
⇒ -9 i - 8 i -(5i + 4j) = -9 i - 8 i - 5i - 4i = -14i - 12 j = 2(-7 i - 6 j)
You can obtain the value of vector B from here. That translates to -7 i and -6 j. Now, it is clear that both apply. Given the warning indicators, a third chord event should be expected.
Additionally, the third quarter went in their favour, or, as we might say with Angelo factor B, A D, plus theatre. Therefore, we get one or d. plus 41 degree when -6 divided by -7 and I. D. Plus are both present. 221 degrees is that.
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5. A 4.0 kg model rocket is launched, shooting 50.0 g of burned fuel from its exhaust at an average velocity of 625 m/s. What is the velocity of the rocket after the fuel has burned?
Answer:
To find the velocity of the rocket after the fuel has burned, we need to use the conservation of momentum principle. The principle states that the momentum of an isolated system (in this case, the rocket and the expelled fuel) is constant, meaning that the initial momentum of the system is equal to the final momentum of the system.
The initial momentum of the system is the momentum of the rocket before the fuel is expelled, which is given by:
p_initial = m_rocket * v_initial = 4.0 kg * 0 m/s = 0 kg m/s
The final momentum of the system is the momentum of the rocket after the fuel is expelled, which is given by:
p_final = m_rocket * v_final
The momentum of the expelled fuel is given by:
p_fuel = m_fuel * v_exhaust = 0.05 kg * 625 m/s = 31.25 kg m/s
The total momentum of the final system is the sum of the rocket and the expelled fuel.
p_total = p_rocket + p_fuel
Now we can use conservation of momentum equation
p_initial = p_final
0 = m_rocket * v_final + m_fuel * v_exhaust
Now we can solve for v_final
v_final = (p_initial - p_fuel) / m_rocket
v_final = (0 - 31.25 kg m/s) / 4.0 kg = -7.8125 m/s
So the final velocity of the rocket after the fuel is expelled is -7.8125 m/s, which means that the rocket is moving in the opposite direction of the expelled fuel.
the set of orchestral pieces of music that are performed in a concert setting
A symphony is a protracted orchestral piece that often consists of multiple significant sections or movements, at least one of which uses the sonata form also called first-movement form.
What three categories do orchestras fall under?"Chamber orchestras" are the smallest orchestra types. It has a maximum of 50 members in total. The "sinfonietta" is the next size up and can have up to about 75 players. There are between 80 and 100 musicians in a full "symphony" or "philharmonic" ensemble.
What is the name of a classical composition?Composition forms include symphony, sonata, piano quintet, and concerto. Many of these forms were used by classical music composers, and frequently, a single composer used a certain form multiple times.
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LEARN MORE REMARKS To find the displacement while braking, we could have used the two kinematics equations involving time, namely, Δx = vot +-3t2 and v = vo + at, but because we weren't interested in time, the time-independent equation was easier to use. QUESTION By how much would the answer change if the plane coasted for 2.0 s before the pilot applied the brakes?
Practice 571.85 You can solve this issue using the previously mentioned worked example.
The pilot will assemble in the cockpit following the physical examination to perform a check of the controls and flight software. The communications system's functionality as well as the emergency procedures are both verified during this inspection. It is absolutely done to prevent the wheels from shaking when they wound down, which can initially startle passengers and occasionally the pilot. Consider an item with uniform deceleration in the same direction and starting one-dimensional velocity. It will finally come to a stop. The square of the initial velocity (v) divided by twice the deceleration (a), or the displacement (x), of an object with an initial velocity and uniform deceleration is equal to:
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HELP PLEASE ITS DUE TOMORROW I NEED A PARAGRAPH
Objects in our solar system, including planets and their moons, stay in orbit because
of gravity and inertia. Draw a model to show how each factor contributes to the
orbits of a planet and a moon orbiting that planet. Include the following in your
model:
Labeled arrows to represent gravity and inertia
• The paths the planet and the moon take during their orbits
. A brief summary of your model
.
The Sun and the asteroids that orbit it make up the gravitationally bound solar system.
What does the solar system brief paragraph mean?The Sun, our star, and everything gravitationally attached to it, including the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, dwarf planets like Pluto, dozens of moons, and millions of asteroids, comets, and meteoroids, make up our solar system.The Sun and the asteroids that orbit it make up the gravitationally bound solar system. The massive gravitational force of the Sun, which keeps the planets and asteroids in their orbits, ties the solar system together. Additionally, there are eight planets in the solar system that orbit the Sun.The Sun and the asteroids that orbit it make up the gravitationally bound solar system.To learn more about solar system refer to:
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Is the BP oil spill still going on?
No, the BP oil spill was the largest marine oil spill in history, occurring in the Gulf of Mexico in 2010. Although some of the oil remains in the environment, the spill itself has long since been contained and cleaned up.
The spill was caused by an explosion at the BP oil spill or Deepwater Horizon oil platform, resulting in a massive release of crude oil and natural gas into the Gulf of Mexico. After several months of clean-up efforts, the spill was contained and the majority of the oil has been removed from the environment. Although some of the oil remains in the environment, the spill itself has long since been contained and cleaned up.
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how can you be able to tell if a force is acting on an object by looking at the velocity time graph?
If the velocity is changing over time, then you know there's an external force being acted on the object. You can tell this by Newton's Second Law F=MA where acceleration is change of velocity over change in time. As a result, if the velocity starts to change, then you know an external force is present on the object.
a pick-up truck carrying a load of mass 150 kg accelerates from some traffic lights at 1.4 ms – 2 . find the smallest possible value of the coefficient of friction if the load does not slip.
The force required to accelerate a weight of mass 150 kg at a velocity of 1.4 m/s2 is shown below: 210 N = F = m * a = 150 kg * 1.4 m/s2 The frictional force acting on the load.
is equal to the force necessary to keep the load from sliding, which is equal to the coefficient of friction () multiplied by the normal force (N). The frictional force must be equal to or greater than the force necessary to accelerate the load if the load does not slide. As a result, the minimal coefficient of friction may be determined as follows: μ = F / N Where N denotes the normal force, equal to the force necessary to keep the load from sliding, which is equal to the coefficient of friction () multiplied by the normal force (N). which is the gravitational force acting on the weight. N = m * g = 150 kg * 9.8.
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the 4000 vv equipotential surface is 13.0 cmcm farther from a positively charged particle than the 5000 vv equipotential surface.
The charge on equipotential surface is found to be 0.28 micro columbs for positively charged particle.
We are given the following data:
V1=4000 V2=5000 d=10 cm
Let’s see how electric potential and charge are related.
The electric potential is given by the following formula:
V=k⋅q/r (1)
where k is the Coulomb constant which has the following value:
k=9x10^9 C2 Nm2
We have two potentials at different distances from the charge. Denote the distance of potential V1 by r1, and the distance of potential V2 by r2. According to the given data we can write the following:
r1 = r2 +d
v1/v2 = r2/r2+d
r2 = -v1.d/v1-v2
= -4000 x 13 x 0.01 /(4000-5000)
= 0.52 m
Charge, q = v2.r2 / k
= 5000 x 0.52 / 9x10^9
= 0.28 micro.C
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The complete question is :
The 4000 vv equipotential surface is 13.0 cm farther from a positively charged particle than the 5000 vv equipotential surface. find the charge on the surface.
_____ is the wave where the oscillation is perpendicular to the direction of motion.
a. Standing wave
b. Longitudinal wave
c. Transverse wave
Answer:
c. Transverse waves
Explanation:
Transverse waves are waves that are oscillating perpendicularly to the direction of propagation.
If a beam of radiation containing 1000 x-rays is spread out over a square field that measures 10 inches long and 10 inches wide, what is the concentration of x-rays per square inch?
a. 1 x-ray/in squared
b. 10 x-rays/in squared
c. 100 x-rays/in squared
d. 1000 x-rays/in squared
e. 10,000 x-rays/in squared
The concentration of x-rays in a given area can be calculated by dividing the total number of x-rays by the area. In this answer, we will determine the concentration of x-rays per square inch in a beam of radiation containing 1000 x-rays spread out over a square field that measures 10 inches long and 10 inches wide.
First, we need to calculate the total area of the square field. To do this, we multiply the length by the width, which gives us 10 inches * 10 inches = 100 square inches. Next, we divide the total number of x-rays by the total area to find the concentration of x-rays per square inch. In this case, 1000 x-rays / 100 square inches = 10 x-rays per square inch.
So, the answer is (c) 100 x-rays per square inch. It is important to note that the concentration of x-rays in a given area will vary based on the number of x-rays and the size of the area being considered. The above calculation assumes a uniform distribution of x-rays, but in real-world scenarios, the distribution may not be uniform and the concentration of x-rays may vary based on factors such as the angle of the beam, the distance from the source, and the presence of any obstructions.
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helpp!!!! Why is it important to provide analysis and results when you write a lab report?
a.so your readers can understand relevant context for the experiment
b.to prove that the original hypothesis was correct
c.to explain what the data from the experiment mean
d.to help other scientists better replicate your experiment
Answer: C
Explanation:
magnus has reached the finals of a strength competition. in the first round, he has to pull a city bus as far as he can. one end of a rope is attached to the bus and the other is tied around magnus's waist. if a force gauge placed halfway down the rope reads out a constant 1833 newtons while magnus pulls the bus a distance of 0.711 meters, how much work does the tension force do on magnus? the rope is perfectly horizontal during the pull.
The work done by the tension force on Magnus can be calculated by multiplying the force exerted by the tension (1833 N) by the distance that Magnus pulls the bus (0.711 m). This is equal to 1303.48 Joules.
Since the rope is perfectly horizontal, the tension force is the only force acting on Magnus, and the work done is equal to the force multiplied by the distance. The force of 1833 N represents the maximum amount of work that can be done on Magnus, and the distance of 0.711 m represents the amount of work that was actually done on Magnus.
As a result, the work done on Magnus by the tension force is 1303.48 Joules.
1833×0.711=1303.48J
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the magnetic material is distributed this way because magnets a. have magnetic fields that repel magnetic materials and push the shavings away. b. have multiple magnetic fields that attract the shavings with different strengths. c. have uneven magnetic fields that attract the shavings in random patterns. d. have magnetic fields that flow from one pole of the magnet to the other.
The magnetic material is distributed this way because magnets B.) have multiple magnetic fields that attract the shavings with different strengths.
Magnetic Field ConceptThe magnetic field is the space/area around the magnet which is still affected by the magnetic force. The magnetic field is depicted by lines of magnetic force, and is represented by arrows.
Things to note about the lines of magnetic force are:
Magnetic lines of force never intersect. Magnetic lines of force always leave the north magnetic pole and enter the south magnetic pole. A place where the magnetic lines of force are close together indicates a strong magnetic field, whereas a place where the magnetic lines are far apart indicates a weak magnetic field.Learn more about magnetic field at https://brainly.com/question/23096032.
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which method describes how a machine learns using the reinforcement machine learning model?
Developers provide a way of rewarding desired behaviours and penalizing undesirable behaviours in reinforcement learning.
Thus, In order to motivate the agent, this technique assigns positive values to desired activities and negative values to undesirable behaviours and learning.
This trains the agent to seek maximal overall reward over the long run in order to arrive at the best possible outcome.
The agent is prevented from stagnating on smaller tasks by these long-term objectives. The agent eventually learns to steer clear of the negative and look for the positive. Artificial intelligence (AI) has adopted this learning strategy as a technique to control unsupervised machine learning using rewards and penalties.
Thus, Developers provide a way of rewarding desired behaviours and penalizing undesirable behaviours in reinforcement learning.
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an engine releases 0.550 kj of heat for every 0.510 kj of work it does. what is the efficiency of the engine?
The efficiency of the engine when an engine releases 0.550 kj of heat for every 0.510KJ of work it does is 0.481.
Given the heat released by engine (Qc) = 0.550KJ
Work done of the engine (W) = 0.510KJ
Let the efficiency of the engine = η
The work per cycle W divided by the heat absorbed from the engine Q is the heat engine's efficiency.
This can be represented as: η = W/Qh
We know W = Qh - Qc where Qh is the high-temperature reservoir Qh
Qh = W + Qc = 0.510KJ + 0.550KJ
Qh = 1.06KJ
The required efficiency is = 0.510KJ/1.06KJ = 0.481
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what is the difference between a volkman, wagstaffe, potts and bosworth fracture?
There are several different distal radius fracture types that can occur in the forearm, including the Volkmann, Wagstaffe, Potts, and Bosworth fractures. These fractures range in severity and need to be immobilised and treated, with surgery an option in more severe cases.
There are several different kinds of forearm bone fractures, including the Volkmann, Wagstaffe, Potts, and Bosworth fractures (radius and ulna).
A distal radius intra-articular fracture known as a Volkmann fracture happens via the radiocarpal joint.
A distal radius fracture near the radiocarpal joint that does not affect the joint is known as a Wagstaffe fracture.
A distal radius fracture called a Potts fracture happens when the radiocarpal joint dislocates along with it.
A distal radius fracture-dislocation known as a Bosworth fracture affects the radiocarpal and midcarpal joints.
All of these fractures may cause severe discomfort, edoema, and restricted wrist motion. The usual course of treatment is immobilisation and rehabilitation, while surgery may occasionally be required to restore function.
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Whose theory was Galileo exposed to at the University of Padua?
At the University of Padua, Galileo was exposed to the theories of the ancient Greek philosopher Aristotle.
Aristotle's philosophy dominated the scientific world during the Renaissance and his ideas were taught at universities throughout Europe, including the University of Padua. Aristotle's theories were based on the concept of causality, which states that everything has a cause and effect, and that these causes and effects can be studied and understood. Aristotle's ideas on physics included the belief that objects in motion would come to rest if not acted upon by an external force, and that heavier objects fall faster than lighter objects. Galileo, however, would later challenge these ideas through his own experiments and observations. Galileo's exposure to Aristotle's theories at the University of Padua would have a profound impact on his later scientific work and he would go on to challenge many of Aristotle's ideas and contribute to the scientific revolution of the 17th century.
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What scientific term is a well-tested explanation for a set of observations or experimental results?
A. method
B. law
C. theory
D. Conclusion
Answer:A scientific theory is a well-tested and consistently verified explanation for a set of observations or phenomena. A scientific law is a description, often in the form of a mathematical formula, of the behaviour of an aspect of nature under certain circumstances. Two types of logical reasoning are used in science.
Explanation:therfore the awnser is scientific theory pls mark me brainliest
which of the following mechanisms is thought to drive the motions of earth's lithospheric plates? electrical and magnetic fields localized in earth's outer core gravitational attractive forces exerted on the earth by the sun and moon heating from the sun generates deep ocean currents that are strong enough to move the seafloor mantle convection resulting from the transfer of heat from deep in the mantle to the top of the asthenosphere
Mantle convection resulting from the transfer of heat from deep in the mantle to the top of the asthenosphere is mechanisms is thought to drive the motions of earth's lithospheric plate.
ABOUT LITHOSPHEREEtymologically, the lithosphere comes from the Greek word lithos which means stone and sphere (sphaira) which means sphere. Therefore, the meaning of the lithosphere is the layer of rock that forms the earth's crust. The lithosphere is the topmost layer of the earth with a thickness of 66 km which consists of rock. Therefore, the lithosphere is often interpreted as forming the surface of the earth which consists of rocks and minerals.
The lithosphere layer has the following benefits:
As a source of energy (petroleum and coal) As the fulfillment of industrial needs (iron and aluminum) As a material for making jewelry (minerals, diamonds, gold, silver) Source of energy and explosives (uranium) Source of fertilizer raw materials (nitrogen and phosphate)Learn more about lithosphere at
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explain why you would expect most underdetermined linear systems to have infinitely many solutions.
Underdetermined linear systems have fewer equations than unknowns, leading to multiple solutions.
Underdetermined linear systems are characterized by having fewer equations than unknowns. This means that the equations are not restrictive enough to uniquely determine a single solution for the unknowns. As a result, there are multiple combinations of values for the unknowns that satisfy the equations, leading to an infinite number of solutions for the system.
Depending on the situation, it can be beneficial to use an underdetermined system as it can be more economical or lead to improved performance. However, care must be taken when utilizing an underdetermined system, as it can lead to unforeseen results or errors if not used correctly.
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a) Determine the mass of a student in kg who weighs 135 lbs. using the conversion factor 1 kg = 2.2 lbs. Round your answer to the nearest tenth. b) Convert 5.3 milligrams into grams.
Answer:
Below
Explanation:
135 lbs * 1 kg/2.2 lb = ~ 61.4 kg
there are 1000 mg in each gram
5.3 mg * 1 gm / 1000 mg = .0053 g
what fundamental lesson do perceptual illusions reinforce?
A perceptual illusion is distinct from an optical illusion, which is essentially an image with contradictory information that makes you view it differently from reality.
Optical illusions often function by utilizing certain visual techniques that take advantage of specific perceptional presumptions. When sensory signals and perceptual models align, perception happens. This is the fundamental framework of how perception operates. The mind and brain create perceptual categories of objects through experience. These categories develop through simple interactions with the item as well as through intellectual understanding and naming in humans.
Cognitive illusions can be divided into three categories: ambiguous illusions, distorting illusions, and paradox or fiction illusions. Images or things that allow the spectator to have two legitimate interpretations of what they represent or what they are allow for the creation of ambiguous illusions.
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the current leading into an electromagnet with a strength of 800 ampere-turn is reduced by the electric company from 20 amp to 10 amp. what can you do to keep the strength of the electromagnet constant?
To keep the strength of the electromagnet constant, you can increase the number of turns in the coil by a factor of 2.
)if the gravitational force between two objects of mass m1 and m2 is 100lb, when their distance from each other is r, what is the gravitational force they exert on each other if we move them 2r apart?
The gravitational force they exert on each other if we move them 2r apart is 25 lb. The result is obtained by using the concept of Newton's law of universal gravitation.
What is the Newton's law of universal gravitation?The Newton's law of universal gravitation states that every object with the mass in the universe attracts to each other. The pulling force is called gravitational force. The gravitational force can be expressed as
F = Gm₁m₂/r²
Where
F = gravitational force (N)G = gravitational constant (6.6743 × 10⁻¹¹ m³kg⁻¹s⁻²)m₁ and m₂ = mass of objects (kg)r = distance of mass of objects (m)The gravitational force between m₁ and m₂ with the distance of r is 100lb. If their distance becomes 2r, find the gravitational force!
Let's say
Fa when the distance is r.Fb when the distance is 2r.Fa/Fb = (Gm₁m₂/r²)/(Gm₁m₂/(2r)²)
100/Fb = 1/r² / 1/4r²
100/Fb = 4/1
Fb = 100/4
Fb = 25 lb
Hence, they exert gravitational force of 25 lb on each other.
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a solid cylinder of radius r = 1.0 m and mass 10 kg rotates about its axis. when its angular velocity is 10 rad/s, its angular momentum (in kg⋅m 2 /s) is
a solid cylinder of radius r = 1.0 m and mass 10 kg rotates about its axis. when its angular velocity is 10 rad/s, its angular momentum (in kg⋅m 2 /s) is 50 kg [tex]m^{2}[/tex] /s.
The angular momentum of a rotating object can be calculated using the formula:
L = I * ω
where L is the angular momentum, I is the moment of inertia and ω is the angular velocity.
The moment of inertia of a solid cylinder rotating about its axis can be calculated using the formula:
I = (1/2) * m * [tex]r^{2}[/tex]
where m is the mass of the cylinder and r is the radius.
Substituting the values in the formula, we get:
I = (1/2) * 10 kg * 1 [tex]m^{2}[/tex] = 5 kg [tex]m^{2}[/tex]
Therefore, the angular momentum,
L = 5 kg [tex]m^{2}[/tex] * 10 rad/s = 50 kg [tex]m^{2}[/tex] /s.
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two vectors have magnitudes of 10 and 15. the angle between them when they are drawn with their tails at the same point is 65°. the component of the longer vector along the line of the shorter is
The required component of the longer vector along the line of the shorter is calculated to be 6.3 m.
The magnitude of vector A = 10
The magnitude of vector B = 15
The angle between the two vectors is given as 65°.
It is important to identify the longer vector's component along the shorter vector's line.
The longer vector has a magnitude 15 and the shorter vector is 10.
The part of vector A that lines up with vector B is,
⇒ 15 cos 65°
⇒ 15 × 0.42
⇒ 6.3 m
Thus, the required component of the longer vector along the line of the shorter is calculated to be 6.3 m.
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irving is running cable underground beside his driveway to power a light at his entrance. what type of cable is he most likely using?
Irving is most likely using a buried electrical cable to power the light at his entrance.
He is used a buried electrical cable.
The type of cable he is using is determined by the requirements of the specific application, including the power needed to be carried, the location and environment of the cable, and any electrical codes or regulations that apply.
In the case of an underground electrical cable for lighting, the most common type of cable used is a low voltage (12-24 V) direct burial cable, made of copper or aluminum wires encased in a protective insulation. This type of cable is specifically designed to be buried underground and is resistant to moisture, chemicals, and temperature changes. It is also available in various lengths and gauges, which can be selected to match the required power load of the light.
If the light requires higher voltage power, then a high voltage (120-240 V) direct burial cable, also made of copper or aluminum, may be used. However, it will require a conduit or protective casing to be buried with it, to prevent damage to the cable and to ensure safety for workers and equipment.
It is important to note that the selection of an appropriate cable and the installation process must comply with local electrical codes and regulations, as well as any specific safety requirements for underground installations. A licensed electrician should be consulted to determine the best type of cable and installation methods for a specific application.
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The quantity with the same units as force times time, Ft, with dimensions MLT- is a. Mv b. Mvr c. Mv^2r d. Ma e. Mv^2/r
The quantity with the same units as force times time, Ft, with dimensions MLT⁻¹ is Mv. Option A. is correct.
The dimensional formula of force times time is MLT⁻¹.
We have the following dimensions,
The dimension of mass is M.
The dimension of length is L.
The dimension of velocity is LT⁻¹.
The dimension of acceleration is LT⁻².
Part (a) The dimension of M v will be,
M v = M L T⁻¹
Part (b) The dimension of M v r will be,
M v r = M . L T⁻¹. L = M L² T⁻¹
Part (c) The dimension of M v² r will be,
M v² r = M . (L T⁻¹)². L = M L³ T⁻²
Part (d) The dimension of M a will be,
M a = M L T⁻²
Part (d) The dimension of M v²/r will be,
M v²/r = M . (L T⁻¹)²/ L = M L T⁻²
Thus, option A is correct.
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by how much would the temperature increase if the same amount of heat was added at a constant pressure?
The amount by which the temperature would increase if the same amount of heat was added at a constant pressure depends on the heat capacity of the system.
The heat capacity is a measure of the amount of heat required to raise the temperature of a system by a given amount and is proportional to the mass of the system and its specific heat capacity.
In general, the temperature increase, ΔT, due to the addition of heat, Q, at constant pressure can be calculated using the equation:
ΔT = Q / (C * m), where C is the heat capacity of the system and m is its mass.
So, to determine the temperature increase, the heat added to the system, the heat capacity, and the mass of the system must be known. The greater the heat capacity, the less the temperature will increase for a given amount of heat added, and vice versa.
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a magnet which generates 800 maxwell of flux, is inserted through a coil of 1000 turns. it is then withdrawn within 0.15 sec. what is the voltage that appears across the coil?
The voltage that appears across the coil when flux, number of turns and time are specified is calculated to be 0.053 V.
Flux is given as 800 maxwell.
We know, 1 maxwell = 10⁻⁸ weber
Flux dФ = 800 × 10⁻⁸ weber = 8 × 10⁻⁶ weber
Time dt = 0.15 sec
Number of turns N = 1000 turns
We know the relation between flux, time, voltage and number of turns as,
V = N dФ/dt
Placing these values in the above expression, we have,
V = N dФ/dt
V = 1000 × [(8 × 10⁻⁶)/0.15] = [(8 × 10⁻³)/0.15] = 0.053 V
Thus, the voltage that appears across the coil is calculated to be 0.053 V.
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