Under what conditions (plural) could you expect to conductors to actually conduct? When will they stop conducting
Answers
Conductors conduct electricity when there's an electric field, availability of free electrons, and they are within an appropriate temperature range. They stop conducting when these conditions are not met, such as in the absence of an electric field, insufficient free electrons, extremely high temperatures, or when they transition to a superconductor state.
Conductors are materials that allow the flow of electric current due to the movement of free electrons. They typically have low resistance to electric current flow. Some common conductors include metals such as copper, aluminum, and silver.
Conditions for conductors to actually conduct:
1. Presence of an electric field: Conductors need an electric field or potential difference to initiate the flow of electric current.
2. Availability of free electrons: Conductors must have a sufficient number of free electrons to conduct electricity.
3. Adequate temperature range: Conductors must be within a suitable temperature range, as extremely high temperatures can impact their conductivity.
Conditions when conductors will stop conducting:
1. Absence of an electric field: If there's no electric field or potential difference, the conductors won't conduct electricity.
2. Insufficient free electrons: If a conductor lacks free electrons, it cannot facilitate the flow of electric current.
3. Extremely high temperatures: At very high temperatures, the resistance of conductors may increase significantly, hindering their ability to conduct electricity.
4. Transition to a superconductor state: In some materials, when cooled down to extremely low temperatures, they exhibit zero electrical resistance and become superconductors. In this state, they no longer behave as regular conductors.
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Related Questions
what is the approximate value of tc for an ideal bose gas at a density of 125 kg/m3, the density of liquid 4he? take m
Answers
The approximate value of tc for an ideal bose gas at a density of 125 kg/m3 is 8.3 * 10¹⁹ K
\(P_{c} = \frac{2mkt^{3/2} }{4 pi h^{2} } * (2.612)\frac{\sqrt{pi} }{2}\)
\(125 kg/m^{3} = \frac{2(6.65*10^{-24})(1.38*10^{-23})^{3/2} }{4pi^{2}(1.05*10^{-34}} *(2.612)\ \frac{sqrt{pi}}{2}\)
Tc = 8.3 * 10¹⁹ K
The substance's mass per unit of volume is its density (also known as specific mass or volumetric mass density). The Latin letter D can also be used to represent density, however the most common sign is (the lower case Greek letter rho). Mass divided by volume is the definition of density in mathematics, where is the density, m is the mass, and V is the volume. Density is sometimes loosely described as weight per unit volume, although this definition is incorrect technically; the term "specific weight" is more appropriate. An example of this is in the US oil and gas business.
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When a red giant dies, before it becomes a WHITE DWARF (small, dim, hot star) that eventually becomes a BLACK DWARF (remnant, dark, cold matter), it explodes into what?
Answers
some massive black dwarfs may eventually produce supernova explosions. These will occur if pycnonuclear (density-based) fusion processes much of the star to iron, which would lower the Chandrasekhar limit for some black dwarfs below their actual mass.
The centers of a 10 kg lead ball and a 150 g lead ball are separated by 11 cm.
What gravitational force does each exert on the other?
Express your answer using two significant figures.
What is the ratio of this gravitational force to the weight of the 150 g ball?
Express your answer using two significant figures.
Answers
Using the gravitational force equation, we have:
$F = G \frac{m_1 m_2}{r^2}$
where G is the gravitational constant, $m_1$ and $m_2$ are the masses of the two balls, and r is the distance between their centers.
Plugging in the given values, we get:
$F = (6.67 \times 10^{-11} N \cdot m^2 / kg^2) \cdot \frac{(10 kg)(0.15 kg)}{(0.11 m)^2} = 8.2 \times 10^{-6} N$
So each ball exerts a gravitational force of 8.2 × 10⁻⁶ N on the other.
To find the ratio of this gravitational force to the weight of the 150 g ball:
Weight of 150 g ball = (0.15 kg)(9.8 m/s²) = 1.5 N
Ratio = (8.2 × 10⁻⁶ N) / (1.5 N) ≈ 5.5 × 10⁻⁶
Therefore, the ratio of the gravitational force to the weight of the 150 g ball is approximately 5.5 × 10⁻⁶.
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A battery and a resistor are wired into a circuit. The resistor dissipates 0.30 W. Now two batteries, each identical to the original one, are connected in series with the resistor. What power does it dissipate?
Answers
Answer:
1.2 W
Explanation:
Let the value of resistance be R , emf of battery be E
current i = E / R
power = i² R
= E² x R / R²
= E² / R
Given
E² / R = .30
when two batteries are connected
Total emf = 2E
current = 2E / R
Power = ( 2E / R )² x R
= 4 E² / R
= 4 x .30
= 1.2 W .
the area of a rectangle is 105 sq in and the length of one side is 7 in. what is the length of the perimeter?
A. 22 inches
B. 27 inches
C. 35 inches
D. 44 inches
E. 49 inches
Answers
Answer:
\( \huge{ \boxed{44 \: \: \text{inches}}}\)
Explanation:
To find the perimeter of the rectangle, we must first find the width of the rectangle given it's length and area then use it to find the perimeter of the rectangle.
Let the width be represented by w
Area of a rectangle = length × width
From the question.
Area = 105 sq. in
length = 7 in
\(105 = 7 \times w \\ 105 = 7w \: \: \: \: \: \: \\ \\ \frac{105}{7} = \frac{7w}{7} \\ w = 15\)
width = 15 in
Perimeter of a rectangle(p) = 2l + 2w
l is the length of the rectangle
w is the width of the rectangle
\(p = 2(7) + 2(15) \\ p = 14 + 30 \\ \\ p = 44\)
We have the final answer as
44 inchesWhat does a larger interquartile range mean.
Answers
Larger values indicate that the central portion of your data spread out further.
if an object is in free fall it will experience air which generates a drag force
Answers
As a red of recent weather activity, there’s less water available for human consumption. Which blome is affected by the most by this change?
Answers
Answer:
The freshwater biome will be most likely to be affected by the weather conditions as the freshwater reservoirs accumulates water from sources like rain, flood and melting of snow. The reservoirs form are groundwater, river, lakes, ponds and others. In the absence of rain the water will not be accumulated in the biome and will effect the life forms living there.
Explanation:
Question 4 of 10
Samples of different materials, A and B, have the same mass, but the sample
of B is higher in density. Which statement could explain why this is so?
A. The sample of material B has greater volume than the sample of
material A.
B. The particles that make up material A are more closely packed
together than the particles that make up material B.
C. The particles that make up material B are more closely packed
together than the particles that make up material A.
D. The particles that make up material A have more mass than the
particles that make up material B.
SUBMIT
Answers
Drag the labels to the image. Each label can be used more than once.
The image shows the path of a ball from the time it's thrown to the time it lands on the ground. Determine the kind of energy the ball has at each
position. (PE stands for gravitational potential energy, and KE stands for kinetic energy.)
Answers
Following the image of the ball that have been shown;
1. Potential energy
2. Kinetic energy
3. Kinetic energy
4. Potential energy
5. Kinetic energy
6. Kinetic energy
7. Kinetic energy
What is the type of energy?
Due to its position or elevation, an object has potential energy while it is at rest or is elevated above the ground. Depending on the circumstances, this potential energy may either be elastic or gravitational.
Kinetic energy, or the energy connected to motion, is present when an item is in motion. An object's kinetic energy is determined by its mass and velocity .
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Answer:
1: Potential and kinetic
2: Potential and kinetic
3: Potential and kinetic
4: potential
5: Potential and kinetic
6: Potential and kinetic
7: NEITHER
Explanation:
4 is potential because its the highest point
7 is neither because the question states "the image shows the path of a ball from the time it's thrown to the time it lands on the ground" so... 7 is when the ball has landed on the ground. therefore it has neither potential nor kinetic because it is resting.
show that if a perpendicularly polarized uniform plane wave in a lossless medium is obliquely incident on a plane boundary with a lossy medium, the refraction angle (i.e., transmission angle) is complex and the transmitted magnetic wave is elliptically polarized.
Answers
When a perpendicularly polarized uniform plane wave in a lossless medium is obliquely incident on a plane boundary with a lossy medium, the refraction angle is complex, and the transmitted magnetic wave becomes elliptically polarized.
What happens to the refraction angle and polarization when a perpendicularly polarized wave meets a lossy medium?When a perpendicularly polarized plane wave in a lossless medium strikes a plane boundary with a lossy medium at an oblique angle, the refraction angle becomes complex. This means that the transmitted wave no longer propagates in a single direction but exhibits an exponential decay component perpendicular to the interface.
The lossy medium absorbs some of the incident energy, leading to a complex refraction angle. Additionally, the transmitted wave becomes elliptically polarized, which means the electric and magnetic field vectors trace an elliptical path instead of a straight line. The elliptical polarization arises due to the interaction between the incident wave and the absorbing medium, causing a phase shift and altering the polarization state.
Lossless and Lossy Media: In electromagnetism, a lossless medium is one that does not dissipate or absorb energy as an electromagnetic wave passes through it, while a lossy medium absorbs some of the incident energy, leading to attenuation or energy loss.
Elliptical Polarization: Elliptical polarization refers to the polarization state of light where the electric and magnetic field vectors trace an elliptical path as the wave propagates. It occurs when the amplitudes and phase differences between the electric and magnetic field components change continuously.
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A 1 kg billiard ball collides head on with a 0.1 kg marble that sits at rest on the table. The marble moves at 3 m/s in the same direction the billiard ball was originally moving. The billiard ball continues after the collision at 0.3 m/s. What was the initial speed of the billiard ball?
Answers
Let v be the billiard ball's initial speed. The total momentum of the ball-marble system is conserved between the times before and after their collision, so that
(1 kg) v + (0.1 kg) (0 m/s) = (1 kg) (0.3 m/s) + (0.1 kg) (3 m/s)
Solve for v :
v + 0 = 0.3 m/s + 0.3 m/s
v = 0.6 m/s
The asteroid Ceres has a mass of 7 x 10²⁰ kg and a radius of 500 km. What is g on the surface of Ceres?
Answers
To calculate the acceleration due to gravity, or g, on the surface of Ceres, we can use the formula:
g = G * M / r²
where G is the gravitational constant (6.67 x 10^-11 N*m²/kg²), M is the mass of Ceres (7 x 10^20 kg), and r is the radius of Ceres (500 km or 5 x 10^5 m).
Plugging in these values, we get:
g = (6.67 x 10^-11) * (7 x 10^20) / (5 x 10^5)^2
g = 0.27 m/s²
Therefore, the acceleration due to gravity on the surface of Ceres is approximately 0.27 m/s². This is about 0.03 times the value of g on Earth, which is 9.81 m/s². So, objects on the surface of Ceres would weigh much less than they would on Earth.
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How does the electrical force relate to the charge of an object?
Answers
Answer:
It is directly proportional to the charge
Explanation:
Hope this helps : )
Hope it helps you.
An ice skater is going into a spin. To simplify the system, the skater’s body (legs, torso, head) has a moment of inertia of 1.719kgm^2. Each hand-arm can be modeled as a point of mass of 5.0kg. At the beginning of the spin, the masses are rotating at 0.50m/s with their arms extended so that the center of mass of the hand-arm is 0.60m from the axis of rotation. For the finale, the skater pulls their arm inward so that the hand-arm is 0.20m from the axis of rotation. What is the angular velocity of the skater during the finale?
Answers
The angular velocity of the skater during the finale is 2.18 rad/s.
The conservation of angular momentum is a principle in physics that states that the total angular momentum of a system remains constant if no external torques act on the system. Mathematically, this can be expressed as L1 = L2, where L1 is the initial angular momentum of a system, L2 is the final angular momentum of the system, and the total torque acting on the system is zero. This principle is analogous to the conservation of linear momentum, which states that the total linear momentum of a system remains constant if no external forces act on the system. The conservation of angular momentum is an important principle in many areas of physics, including mechanics, electromagnetism, and quantum mechanics.
We can use the conservation of angular momentum to solve this problem. The initial angular momentum of the skater and the hand-arms is given by:
L1 = I1 * w1
where I1 is the moment of inertia of the skater's body, and w1 is the initial angular velocity. Since the hand-arms are extended, their moment of inertia can be neglected.
When the skater pulls their arms inward, the moment of inertia of the system decreases. The final moment of inertia is given by:
I2 = I1 + 2md^2
where m is the mass of each hand-arm, d is the distance of the hand-arm from the axis of rotation, and we multiply by 2 since there are two hand-arms.
The final angular velocity w2 can be found by equating the initial and final angular momentum:
L1 = I1 * w1 = I2 * w2
Substituting the expressions for I1, I2, and simplifying, we get:
w2 = w1 * I1 / (I1 + 2m(d2^2 - d1^2))
where d1 is the initial distance of the hand-arm from the axis of rotation (0.60 m), and d2 is the final distance of the hand-arm from the axis of rotation (0.20 m).
Substituting the given values, we get:
w2 = 0.50 m/s * 1.719 kgm^2 / (1.719 kgm^2 + 2 * 5.0 kg * (0.20 m^2 - 0.60 m^2))
w2 = 2.18 rad/s
Therefore, The skater's angular velocity during the grand finale is 2.18 rad/s.
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고체와 액체 사이의 회색 영역에서는 어떤 일이 발생합니까?
[Translated]
What happens in the gray area between solids and liquids?
Answers
Answer:
From liquid to solid or to solid or liquid the transition has to cross the grey zone.
Explanation:
hope it helps<
\( \huge \tt \blue{Answer}\)
Solids and liquids are well understood. But some materials act like both a liquid and a solid, making their behaviour hard to predict. Sand is one example. A grain of sand is as solid as a rock, but a million grains can flow through a funnel almost like water. And highway traffic can behave in a similar way, flowing freely until it becomes blocked at some bottleneck.So a better understanding of this “gray zone” might have important practical applications.“People have been asking, under what conditions does the entire system jam up or clog?” says Dr. Kerstin Nordstrom, a physicist at Mount Holyoke College. “What are the crucial parameters to avoid clogging?” Weirdly, an obstruction in the flow of traffic can, under certain conditions, actually reduce traffic jams. “It’s very counter intuitive,” she says.______________________________________
what is the sign of the charge of the particle? neglect relativistic effects.
Answers
The sign of the charge of a particle can be either positive or negative. It depends on whether the particle has more or less electrons than protons. If the particle has more electrons than protons, it will have a negative charge, and if it has fewer electrons than protons, it will have a positive charge.
1. Protons have a positive charge (+1 elementary charge).
2. Electrons have a negative charge (-1 elementary charge).
3. Neutrons have no charge (neutral).
When examining a particle, identify if it is a proton, electron, or neutron. The sign of its charge will correspond to the respective charge for each particle type.
However, there are also neutral particles that have an equal number of electrons and protons and therefore have no net charge.
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please help
a piece of wood of mass 40g and uniform cross-sectional area of 2cm^2 floats upright in water. calculate the length of the immersed part of the wood
Answers
The length of the immersed part of the wood is 0.2m.
What is density?The density is the ratio of the mass and the volume of the object. It is denoted by ρ.
ρ = mass/Volume = m/V
Volume = Area of cross-section A x height h
Given is a piece of wood of mass 40g =0.04kg and uniform cross-sectional area A= 2cm² =2x10⁻⁴ m² floats upright in water.
The density of water ,ρ = 1000 kg/m³
The density related to length of part immersed is
1000 = 0.04/ (2x10⁻⁴ x h)
h = 0.2m
Thus, the length of the immersed part of the wood is 0.2m.
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PLEASE HELP, IS URGENT
Answers
Answer: around 65.
Explanation:
You are given a diameter of 10 cm (this is x value). find what y value is equal to at those 10 cm. You’ll see that it’s aroun 65
Hello,
Please can I have some help with these questions? Many thanks!
Answers
You have already plotted the graph.
Solving unsolved one
#d
One result is anamolous
That's
(50,32)This is because
until 50 it's increasing 6 per step But at 50 it increased +7 i.e from 25 to 32As it broke the sequence hence this is anamolous
A man has a 90 kg mass on Earth. If the moon has 1/6 of the gravity as the earth,
what is the mass of a 90 kg man on the moon?
Answers
Moon mass : 10 • 1/6 = 5/3(force of gravity). 90kg • 5/3 = 150N
10= force of gravity
calculate the energy
Answers
Answer:
8550 Joules of energy.
Explanation:
The bell is situated at the top of the tower, height = 45mWeight of the bell, F = 190 NThe workdone by the gravitational force = F.hcos180°As a result, when the body is 45 meters above the earth, gravitational force (e.g., weight) works downward. As a result, the angle formed by the force and h = 180°.Therefore the workdone by the gravitational force = 190 × 45 × -1= -8550 J
Thus, potential energy = neg of workdone= -(-8550 J) = 8550 JIf two runners cover the same distance in different amounts of time, how do there speeds compare
Answers
1ST TO ANSWER GET BRAINLIEST ANSWER How old do u need to be to drink Beer
Answers
The age limit to drink beer is 17 or 18 and up
how does the interstellar medium affect our view of most of the galaxy?
Answers
Answer: It prevents us from seeing most of the galactic disk with visible and ultraviolet light.
(hope this helps) :)
What are the potential products of volcanic eruptions
Answers
Two sounds, one at 440 Hz and the other at 444 Hz, occur at the same time. What beat
frequency do you hear?
Answers
Answer:
Number of beats per second is equal to the difference between the two combining frequencies. Hence, there will be 444-440=4
Explanation:
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our sun is a star that is fueled by a specific type of nuclear reaction. which type of nuclear reaction is this?
Answers
Answer:
the fusion of hydrogen nuclei or in other words "nuclear fusion"
Explanation:
A gymnast jumps upward with an initial speed of 10 m/s. She is in the air for a total time of
A. 1 second
B. 5 seconds
C. 2 seconds
D. 10 seconds
Answers
A gymnast, who jumps upward with an initial speed of 10 m/s, is in the air for a total time of C. 2 seconds.
Consider the factors affecting the gymnast's motion, which are initial speed, gravity, and time. When the gymnast jumps, she experiences Earth's gravity, which causes a downward acceleration of approximately 9.8 m/s². We can use the formula t = (2*v₀) / g to find the total time in the air, where t is the total time, v₀ is the initial speed, and g is the acceleration due to gravity.
Plugging in the given values, we get t = (2*10 m/s) / 9.8 m/s² ≈ 2.04 seconds. Since the available choices are in whole numbers, we can round this value to the nearest second, which is 2 seconds. So, the gymnast is in the air for a total time of 2 seconds (C).
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A particle starts from rest and is acted on by a net force that does work at a rate that is proportional to the time t. The speed of the particle is proportional to:.
Answers
A particle starts from rest and is acted on by a net force that does work at a rate that is proportional to the time t. The speed of the particle is proportional to √t.
Work is a change in kinetic energy, it should be noted. Power will therefore be determined as follows:
Power = Work / Time = force × velocity
Work = the change in kinetic energy = 1/2 mv2
If work is proportional to time:
W = t
1/2 mv2 = t
v2 = t
v (speed) = √t
Speed is the rate and direction of an object's movement, as well as the rate and duration at which an object is moving along a path. In all other positions, speed is a scalar value while pace is a vector.
Power is inversely related to t. Because the force is constant, the velocity will be a function of t. As a result, the particle's speed is proportional to √t.
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