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.
The div in cartesian coordinates
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742
Find the location of the diver's reflection in the convex mirror
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19
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849
Find the electric field between 2 finite discs
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16
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1K
Find the location and length of the final image
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2
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886
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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808
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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1K
Calculating torque on a pendulum
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2
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805
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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618
Mass atop four springs with external input: Reduce vibration amplitude by factor of ten
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3
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867
What mass must be placed on the cord to keep the pulley from rotating?
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1
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910
Ratio of volumes in a vertical cylinder with a piston
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3
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743
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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726
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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836
How to determine if electrical components are connected in parallel or in series?
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10
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950
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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933
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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830
Two Inverted Pendulums connected by a rope
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10
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528
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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769
Textbook 'The Physics of Waves': Linearity of Forced Oscillator
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6
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844
Induced currents on a pair of separated dipole antennas
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2
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660
Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
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5
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698
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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982
Textbook 'The Physics of Waves': Lifetime of SHM Oscillators
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5
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757
Textbook 'The Physics of Waves': Calculating Work Done by Force
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2
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874
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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913
Is there a limit on how much energy a photon might have in a FOR?
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10
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833
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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881
What is meant by small oscillations for this potential energy function?
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2
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802
Initial velocity of bird landing on horizontal wire modeled as spring
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7
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974
Circular motion of a Weightless rod
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18
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879
Electric field of point along the central vertical axis of a triangle
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3
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861
Proving Newton's 3rd law from conservation of momentum
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2
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723
Finding speed of two billiard balls in elastic collision
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9
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927
Electromagnetism - Infinite plane of charge & Tension
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9
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719
Measurement of the Stefan-Boltzmann constant
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6
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645
Why is the superposition principle valid here?
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5
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800
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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731
Force analysis of a spring-bob system
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2
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646
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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784
Conservation of energy of a bow and arrow
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3
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771
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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558
Applying Force on a Cylinder at an Angle
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8
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818
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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1K
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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1K
Homer Simpson spinning inside an hourglass
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4
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588
Resultant force on a parachutist
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11
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918
A moving boat with a flag on its mast
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15
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968
Calculating work done by a gas
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2
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760
Length Contraction Problem for a Rod in a Spaceship
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4
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579
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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709
Theory of relativity -- Car and Garage Paradox
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13
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845
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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955
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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903
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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955
Speed of charged balls after collision
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13
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1K
Electric Field of a quarter ring
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3
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635
Maxwell disc linked to bar unwinds but stays at same height by raising bar
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2
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664
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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1K
For what values of total energy is the resulting motion periodic?
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25
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994
Why are moments not included in free body diagrams?
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31
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2K
Ruler measurements and knowing how many decimal places to include
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9
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2K
Energy analysis of this system (curved ramp up and a spring)
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29
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1K
Dispersion of rightward steps in 1-D random walks
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3
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559
B-field from a current in a wire above a conducting surface
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1
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562
Determining impulse given stopping distance and change in velocity
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6
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691
Special Relativity: spaceships heading toward each other
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7
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741
Quantum Mechanics - Time dependent solution - x's and t's not mixed up
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2
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731

Intro Physics Homework Help

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