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.
Gauss' law for charge distribution of a point charge at the origin surrounded by an insulating sphere
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383
Mass atop four springs with external input: Reduce vibration amplitude by factor of ten
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3
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478
What mass must be placed on the cord to keep the pulley from rotating?
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1
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462
Ratio of volumes in a vertical cylinder with a piston
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3
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412
Estimating damped harmonic oscillator parameters from this plot of the oscillations
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9
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766
A rod that falls while rotating from the end of a table
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11
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599
Question about Projectile Motion: Throwing a Flower Pot from a Balcony
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18
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807
Doubt regarding View factor/shape factor of infinite inclined plate
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3
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411
The speed of the point of intersection of two uniformly moving lines
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24
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952
Theoretical velocities at different heights sliding down an inclined plane
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4
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397
How to determine if electrical components are connected in parallel or in series?
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10
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500
Electric flux through an inclined cylinder
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16
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505
A charge q approaching two stationary charges q1 and q2
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7
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441
Analyzing this 2-lens optical system
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5
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660
Charge conservation for 3 parallel charged plates
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19
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629
Force transmitted to a block in viscous fluid through a spring, cord, and pulley
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6
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506
Two Inverted Pendulums connected by a rope
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10
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428
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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727
Help finding the change in potential energy in this problem
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9
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480
Textbook 'The Physics of Waves': Linearity of Forced Oscillator
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6
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557
Induced currents on a pair of separated dipole antennas
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2
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371
Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
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5
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401
Ball launched from a height of 5 meters --- Projectile motion
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12
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534
Block on top of an inclined plane, with a rough surface, that moves with constant acceleration
2
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41
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2K
Energy analysis of the system (leaking bucket from Morin's "Mechanics"
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5
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665
Textbook 'The Physics of Waves': Lifetime of SHM Oscillators
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5
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487
Textbook 'The Physics of Waves': Calculating Work Done by Force
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2
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521
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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616
Is there a limit on how much energy a photon might have in a FOR?
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10
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536
How to parametrize motion of a pendulum in terms of Cartesian coordinates?
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1
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570
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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438
What is meant by small oscillations for this potential energy function?
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2
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454
Initial velocity of bird landing on horizontal wire modeled as spring
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7
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478
Circular motion of a Weightless rod
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18
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521
Electric field of point along the central vertical axis of a triangle
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3
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492
Proving Newton's 3rd law from conservation of momentum
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2
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372
Finding speed of two billiard balls in elastic collision
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9
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431
Electromagnetism - Infinite plane of charge & Tension
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9
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381
Measurement of the Stefan-Boltzmann constant
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6
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382
Why is the superposition principle valid here?
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5
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461
Morin 3.7 -- Block sliding sideways on an inclined plane
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11
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635
How Do Mass and Weight Differ?
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29
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844
Equivalence of Euler-Lagrange equations and Cardinal Equations for a rigid planar system
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4
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610
Rotating simple harmonic oscillator
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11
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693
Deriving speed equations | Elastic collision
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1
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382
Force analysis of a spring-bob system
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2
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374
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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754
Impulse and perfectly inelastic collision between 2 points
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4
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433
Conservation of energy of a bow and arrow
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3
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390
Stretched spring attached to the center of a pure rolling disk
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11
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556
What is taken as datum level for the following absolute potentials?
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2
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346
Applying Force on a Cylinder at an Angle
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8
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470
Free Body Diagram of Mass-Spring System
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5
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603
Conservation of Mechanical Energy - Which Equation To Use?
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9
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645
Closest distance of approach between 2 charged particles
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5
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500
System of two wheels of different sizes with an axle through their centers
2
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67
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2K
Change in Entropy When Mixing Water at Different Temperatures
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5
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510
Question About Momentum: Ball Rolling up a Curved Ramp
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12
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712
Homer Simpson spinning inside an hourglass
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4
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384
Resultant force on a parachutist
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11
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521
A moving boat with a flag on its mast
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15
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564
Calculating work done by a gas
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2
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412
Length Contraction Problem for a Rod in a Spaceship
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4
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400
Perfectly inelastic collision between Projectile and a hinged disk
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26
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679
Moving charge deflected by a loop of wire
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1
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380
Theory of relativity -- Car and Garage Paradox
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13
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616
Maximum allowable value of a force
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5
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674
Conservation of Momentum Problem - Mechanical and Kinetic Energies
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2
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460
Dynamics of a Block on top of a slab with friction between them
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33
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799
Find the Period of Oscillation for a Mass Falling Through a Tunnel Through the Earth
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7
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567
Textbook 'The Physics of Waves': Derive Complex Solution Form for SHM
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6
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582
Is it friction or tension acting on the person hanging on a rope?
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4
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522
Could someone help me study this cyclic process of an ideal gas?
2
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35
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871
Spherical ball rolling back and forth in a bowl
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24
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674
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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562
Speed of charged balls after collision
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13
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623
Electric Field of a quarter ring
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3
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415
Maxwell disc linked to bar unwinds but stays at same height by raising bar
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2
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364
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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711
For what values of total energy is the resulting motion periodic?
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25
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646
Why are moments not included in free body diagrams?
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31
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902
Ruler measurements and knowing how many decimal places to include
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9
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817
Energy analysis of this system (curved ramp up and a spring)
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29
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736
Dispersion of rightward steps in 1-D random walks
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3
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356
B-field from a current in a wire above a conducting surface
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1
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322
Determining impulse given stopping distance and change in velocity
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6
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383
Special Relativity: spaceships heading toward each other
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7
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479
Quantum Mechanics - Time dependent solution - x's and t's not mixed up
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2
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414
Torques acting on a cylinder, with friction
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1
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349
Block connected to 2 real pulleys
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18
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481
Manned spacecraft to Tau problem
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5
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415
Events occuring in 4D spacetime
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1
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366
A rod sliding/falling down on a frictionless horizontal plane
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8
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594
Why is a 1d conservative force approximately linearly related to position?
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3
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454
Finding magnetic field using Ampere's Circuital Law
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5
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536
Is My Understanding of Accelerations in Irodov 1.258 Correct?
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14
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681
Two masses connected by Pulley - Lagrangian problem
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6
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501
Trying to Calculate Initial Velocity and Final Velocity
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2
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456
Colour depends on wavelength or frequency?
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22
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674

Intro Physics Homework Help

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