Recent questions tagged field

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Suppose that an elementary magnet is situated at the origin and that its axis corresponds to the $z$-axis.

asked Jul 2 in Mathematics by ♦Pieter Diamond (43,113 points) | 8 views

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Let $f$ be a $C^{1}$ vector field on a neighbourhood of the annulus \[ A=\left\{\mathbf{x} \in \mathbb{R}^{2} \quad: 1 \leq|x| \leq 2\right\} \]

asked Jul 2 in Mathematics by ♦Pieter Diamond (43,113 points) | 9 views

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Consider the motions of non-sero-rest-mass particles in a gravitional field created by a mass $M$ and characterized by the Schwarzschild metric

asked Jul 1 in Mathematics by ♦Pieter Diamond (43,113 points) | 7 views

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State Einstein's field equations in general relativity

asked Jan 11 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 67 views

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A basketball player scores on $40 \%$ of 2 -point field goal attempts, and on $30 \%$ of 3 -point of field goal attempts. Find the player's overall field goal percentage.

asked Jan 3 in Mathematics by ♦MathsGee Platinum (124,484 points) | 103 views

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Two objects of masses $80 \mathrm{~kg}$ and $50 \mathrm{~kg}$ are separated by a distance of $0.2 \mathrm{~m}$. If the gravitational constant is $6.6 \times 10^{-11} \mathrm{Nm} \mathrm{kg}$,

asked Nov 10, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 162 views

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How many beta particle(s) are emitted in the radioactive decay of ${ }_{79}^{198} \mathrm{Au} \leftarrow{ }_{80}^{198} \mathrm{Hg} ?$

asked Nov 10, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 134 views

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In storing magnets, keepers are used to

asked Nov 10, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 97 views

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How does an If...else Statement work in programming?

asked Oct 16, 2021 in Computer Science by ♦MathsGee Platinum (124,484 points) | 169 views

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How does an If Statement work in programming?

asked Oct 16, 2021 in Computer Science by ♦MathsGee Platinum (124,484 points) | 166 views

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When a fast charged particle traverses a dielectric medium at a velocity exceeding the velocity of light in that medium, radiation is emitted. This radiation is known as:

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 145 views

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Which of the following are the parts of a DC generator that convert the AC in the armature to DC in the external circuit. Are these parts the:

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 229 views

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The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the direction of the magnetic field is

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 215 views

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A copper rod which is 1 centimeter in diameter carries a current of 5 amps. The current is distributed uniformly throughout the rod. The magnetic field half way between the axis of the rod and its outside edge is:

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 154 views

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An infinitely long wire carries a current of three amps. The magnetic field outside the wire:

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 178 views

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A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is parallel to the magnetic field, describe the shape of the charged particle's path.

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 224 views

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A circuit which employs a DIRECT CURRENT source has a branch which contains a capacitor. After the circuit has reached a steady state, what is the magnitude of the current in the circuit branch which contains the capacitor?

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 143 views

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A 10 farad capacitor is used in a circuit. The voltage difference between the plates of the capacitor is 20 volts. What is the magnitude of the charge on each of the capacitor's plates?

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 214 views

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A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is:

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 287 views

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For a parallel-plate capacitor with plate area "A" and plate separation "d", the capacitance is proportional to which of the following?

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 170 views

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For an infinite sheet of positive charge, the electric field lines:

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 241 views

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For a negative point charge, the electric field vectors:

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 244 views

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Five volts are applied across the plates of a parallel plate capacitor. The distance of separation of the plates is .02 meters. What is the magnitude of the electric field inside the capacitor?

asked Oct 5, 2021 in Physics & Chemistry by Digitized Wooden Status (1,336 points) | 293 views

$Three point charges are in a straight line. Their charges are $Q_{1}=+4 \times 10^{-9} \mathrm{C}, Q_{2}=+2 \times 10^{-9} \mathrm{C}$ and $Q_{3}=-6 \times 10^{-9} \mathrm{C}$.$

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Three point charges are in a straight line. Their charges are $Q_{1}=+4 \times 10^{-9} \mathrm{C}, Q_{2}=+2 \times 10^{-9} \mathrm{C}$ and $Q_{3}=-6 \times 10^{-9} \mathrm{C}$.

asked Oct 1, 2021 in Physics & Chemistry by Student SIlver Status (10,994 points) | 324 views

$Two positive point charges, $q_{1}=+16 \times 10^{-6} \mathrm{C}$ and $\mathrm{q}_{2}=+4 \times 10^{-6} \mathrm{C}$, are separated by a distance $3 \mathrm{~m}$.$

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Two positive point charges, $q_{1}=+16 \times 10^{-6} \mathrm{C}$ and $\mathrm{q}_{2}=+4 \times 10^{-6} \mathrm{C}$, are separated by a distance $3 \mathrm{~m}$.

asked Oct 1, 2021 in Physics & Chemistry by Student SIlver Status (10,994 points) | 233 views

$Two point charges, $Q_{1}$ and $Q_{2}$, a distance $3 \mathrm{~m}$ apart, are shown below. The charge on $Q_{1}$ is $-14 \mu \mathrm{C}$ and the charge on $Q_{2}$ is $+20 \mu \mathrm{C}$$

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Two point charges, $Q_{1}$ and $Q_{2}$, a distance $3 \mathrm{~m}$ apart, are shown below. The charge on $Q_{1}$ is $-14 \mu \mathrm{C}$ and the charge on $Q_{2}$ is $+20 \mu \mathrm{C}$

asked Oct 1, 2021 in Physics & Chemistry by Student SIlver Status (10,994 points) | 204 views

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What is an electric field at a point?

asked Oct 1, 2021 in Physics & Chemistry by Student SIlver Status (10,994 points) | 143 views

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What is an electric field?

asked Oct 1, 2021 in Physics & Chemistry by Student SIlver Status (10,994 points) | 100 views

$Below is a diagram of a charged object (conductor) at electrostatic equilibrium. Points $A, B$, and $D$ are on the surface of the object, whereas point $\mathrm{C}$ is located inside the object.$

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Below is a diagram of a charged object (conductor) at electrostatic equilibrium. Points $A, B$, and $D$ are on the surface of the object, whereas point $\mathrm{C}$ is located inside the object.

asked Oct 1, 2021 in Physics & Chemistry by Student SIlver Status (10,994 points) | 280 views

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An electric field strength created by charge $\mathrm{Q}$ is measured to be $40 \mathrm{~N} / \mathrm{C}$ at a distance of $0.2 \mathrm{~m}$ from the center of the charge.

asked Oct 1, 2021 in Physics & Chemistry by Student SIlver Status (10,994 points) | 743 views

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Calculate the magnitude of the electric force of point P

asked Sep 30, 2021 in Physics & Chemistry by anonymous | 135 views

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What is the importance of the magnetic field to life on Earth?

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 1,044 views

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What is diamagnetism?

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 76 views

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What is ferromagnetism?

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 80 views

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Why is the net magnetic field in any object zero?

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 147 views

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What is a magnetic field?

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 102 views

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What is electrical potential?

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 102 views

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Give examples of phenomena that are affected by Earth's magnetic field.

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 262 views

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Explain how a compass indicates the direction of a magnetic field.

asked Aug 30, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 557 views

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Explain why permanent magnets have a magnetic field around them.

asked Aug 29, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 128 views

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Describe what is meant by the term magnetic field.

asked Aug 29, 2021 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 114 views

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In an observation, there is a high correlation between the time a person sleeps and the amount of productive work he does. What can be inferred from this?

asked Jul 23, 2021 in Data Science & Statistics by Student SIlver Status (10,994 points) | 127 views

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The two electric fields at a point in space are $\vec{E}_{1}=3 \hat{x} \frac{\mathrm{N}}{\mathrm{C}}$ and $\vec{E}_{2}=4 \hat{y} \frac{\mathrm{N}}{\mathrm{C}} \cdot$ What is the net electric field?

asked May 31, 2021 in Physics & Chemistry by ♦Pieter Diamond (43,113 points) | 190 views

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If the driver had driven the entire distance at a constant speed, at what speed would he have needed to drive so that the journey from Haifa to Eilat would take exactly the same amount of time?

asked May 30, 2021 in Mathematics by ♦MathsGee Platinum (124,484 points) | 142 views

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The set $\mathbb{Q}$ adjoin $\sqrt{2}$ is defined by $\mathbb{Q}(\sqrt{2})=\{p+q \sqrt{2}: p, q \in \mathbb{Q}\}$.

asked May 10, 2021 in Mathematics by ♦Pieter Diamond (43,113 points) | 88 views

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What are some important Electric Field Formulas?

asked Mar 29, 2021 in Physics & Chemistry by Eddie Wooden Status (2,040 points) | 147 views

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How does an electric generator work?

asked Sep 15, 2020 in Physics & Chemistry by ♦MathsGee Platinum (124,484 points) | 134 views

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Is the magnetic field caused by current in a wire?

asked Sep 5, 2020 in Physics & Chemistry by Student SIlver Status (10,994 points) | 132 views

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Why exactly is electric potential lower at where the negative charges are than at where the positive charges are?

asked Sep 5, 2020 in Physics & Chemistry by Student SIlver Status (10,994 points) | 137 views

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Why is electric potential high near positive charges ?

asked Sep 5, 2020 in Physics & Chemistry by Student SIlver Status (10,994 points) | 154 views

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