Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Find the change in the time required, if acceleration increases by the differential amount 'da'
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Solving for potential using surface charge density of a sphere
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3
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1K
Tension in a string which connects 3 pulleys
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12
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1K
Particle in one dimension wave function from Quantum Mechanics
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3
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752
Minimal distance between two planes moving perpendicularly
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6
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754
Analyzing acceleration of block on a ramp connected to a pulley
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15
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2K
Friction problem of a block sandwiched between 2 surfaces
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6
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1K
How friction acts on a block moving down a slope moving side to side
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2
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890
How to find the equivalent resistance of this infinite circuit?
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10
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2K
The div in cartesian coordinates
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2
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747
Find the location of the diver's reflection in the convex mirror
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19
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855
Find the electric field between 2 finite discs
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16
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Find the location and length of the final image
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2
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891
Man pulling a boat along the water with a rope (from above on a steep bank)
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31
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2K
Material Selection - Hooke's law [not]
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14
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814
Tension Force Problem (applying Work-Kinetic Energy Theorem)
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16
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1K
Falling mass, additionally accelerated by a rope
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18
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Calculating torque on a pendulum
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2
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809
Electric field lines outside a neutral conducting spherical shell
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12
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1K
How to calculate quality factor for RLC circuit?
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6
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1K
Gauss' law for charge distribution of a point charge at the origin surrounded by an insulating sphere
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1
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621
Mass atop four springs with external input: Reduce vibration amplitude by factor of ten
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3
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872
What mass must be placed on the cord to keep the pulley from rotating?
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1
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913
Ratio of volumes in a vertical cylinder with a piston
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3
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751
Estimating damped harmonic oscillator parameters from this plot of the oscillations
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9
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2K
A rod that falls while rotating from the end of a table
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11
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2K
Question about Projectile Motion: Throwing a Flower Pot from a Balcony
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18
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1K
Doubt regarding View factor/shape factor of infinite inclined plate
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3
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735
The speed of the point of intersection of two uniformly moving lines
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24
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2K
Theoretical velocities at different heights sliding down an inclined plane
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4
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843
How to determine if electrical components are connected in parallel or in series?
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10
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958
Electric flux through an inclined cylinder
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16
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1K
A charge q approaching two stationary charges q1 and q2
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7
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942
Analyzing this 2-lens optical system
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5
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1K
Charge conservation for 3 parallel charged plates
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19
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1K
Force transmitted to a block in viscous fluid through a spring, cord, and pulley
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6
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832
Two Inverted Pendulums connected by a rope
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10
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533
Gauss' law problem -- Should the field due to both the inside and outside charges be taken into account?
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28
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1K
Help finding the change in potential energy in this problem
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9
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775
Textbook 'The Physics of Waves': Linearity of Forced Oscillator
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6
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850
Induced currents on a pair of separated dipole antennas
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2
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662
Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
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5
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706
Ball launched from a height of 5 meters --- Projectile motion
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12
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1K
Block on top of an inclined plane, with a rough surface, that moves with constant acceleration
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41
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4K
Energy analysis of the system (leaking bucket from Morin's "Mechanics"
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5
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990
Textbook 'The Physics of Waves': Lifetime of SHM Oscillators
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5
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763
Textbook 'The Physics of Waves': Calculating Work Done by Force
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2
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876
Textbook 'The Physics of Waves': Reason to force us to consider complex solution for harmonic motion?
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3
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915
Is there a limit on how much energy a photon might have in a FOR?
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10
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842
How to parametrize motion of a pendulum in terms of Cartesian coordinates?
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1
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1K
Is the line integral of tangential force in pendulum equal to the negative of change in potential energy?
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3
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884
What is meant by small oscillations for this potential energy function?
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2
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806
Initial velocity of bird landing on horizontal wire modeled as spring
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7
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977
Circular motion of a Weightless rod
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18
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884
Electric field of point along the central vertical axis of a triangle
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3
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866
Proving Newton's 3rd law from conservation of momentum
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2
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729
Finding speed of two billiard balls in elastic collision
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9
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934
Electromagnetism - Infinite plane of charge & Tension
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9
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722
Measurement of the Stefan-Boltzmann constant
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6
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649
Why is the superposition principle valid here?
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5
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804
Morin 3.7 -- Block sliding sideways on an inclined plane
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11
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1K
How Do Mass and Weight Differ?
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29
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1K
Equivalence of Euler-Lagrange equations and Cardinal Equations for a rigid planar system
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4
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1K
Rotating simple harmonic oscillator
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11
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1K
Deriving speed equations | Elastic collision
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1
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737
Force analysis of a spring-bob system
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2
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649
Block on top of moving slab, with a rough surface - When does v_b=v_s?
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27
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1K
Impulse and perfectly inelastic collision between 2 points
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4
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789
Conservation of energy of a bow and arrow
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3
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774
Stretched spring attached to the center of a pure rolling disk
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11
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1K
What is taken as datum level for the following absolute potentials?
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2
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561
Applying Force on a Cylinder at an Angle
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8
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822
Free Body Diagram of Mass-Spring System
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5
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1K
Conservation of Mechanical Energy - Which Equation To Use?
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9
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1K
Closest distance of approach between 2 charged particles
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5
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System of two wheels of different sizes with an axle through their centers
2
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67
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4K
Change in Entropy When Mixing Water at Different Temperatures
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5
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1K
Question About Momentum: Ball Rolling up a Curved Ramp
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12
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2K
Homer Simpson spinning inside an hourglass
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4
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592
Resultant force on a parachutist
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11
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924
A moving boat with a flag on its mast
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15
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977
Calculating work done by a gas
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2
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762
Length Contraction Problem for a Rod in a Spaceship
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4
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583
Perfectly inelastic collision between Projectile and a hinged disk
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26
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1K
Moving charge deflected by a loop of wire
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1
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713
Theory of relativity -- Car and Garage Paradox
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13
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853
Maximum allowable value of a force
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5
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1K
Conservation of Momentum Problem - Mechanical and Kinetic Energies
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2
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959
Dynamics of a Block on top of a slab with friction between them
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33
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1K
Find the Period of Oscillation for a Mass Falling Through a Tunnel Through the Earth
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7
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1K
Textbook 'The Physics of Waves': Derive Complex Solution Form for SHM
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6
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904
Is it friction or tension acting on the person hanging on a rope?
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4
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1K
Could someone help me study this cyclic process of an ideal gas?
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35
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1K
Spherical ball rolling back and forth in a bowl
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24
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2K
Determine the force with which the magnetic field of a coil acts on an infinitesimal cube of iron
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6
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964
Speed of charged balls after collision
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13
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Electric Field of a quarter ring
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3
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636
Maxwell disc linked to bar unwinds but stays at same height by raising bar
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2
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668
Gauss' Law with a Insulating Shell
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4
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21K
Induced EMF in a rotating ring
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14
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Intro Physics Homework Help

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