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.
Total magnetic field from two long parallel wires
  • physstudent1
  • · Replies 1 ·
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1
What are the final direction and speeds of two colliding billiard balls?
  • Bones
  • · Replies 15 ·
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15
Complicated disk rolling problem (Angular Momentum and it's ilk)
  • ultrapowerpie
  • · Replies 20 ·
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20
Real Images and Thin Lenses: Can You Explain the Postulation?
  • Gear300
  • · Replies 6 ·
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6
Gyroscope- Angular Speed, Rotational Kinematics, Precession
  • jcwhitts
  • · Replies 2 ·
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2
Finding charge of a uniformly charged disk
  • minase
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1
What Angle Does the Block Hang at When the Van Rounds a Curve?
  • livblue23
  • · Replies 1 ·
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1
What is the Horizontal Speed of the Second Fragment After the Shell Explodes?
  • shimizua
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1
Angular Acceleration of a hammer
  • matyash
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2
What is the vector diagram for a falling egg's momentum at 10m/s?
  • wasi90lk
  • · Replies 4 ·
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4
Calculating Centripetal Force on a Child Riding a Ferris Wheel
  • leisiminger
  • · Replies 3 ·
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3
What is the Tension in 2 Strings with a 119N Mass and Given Angles?
  • swede5670
  • · Replies 6 ·
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6
Coefficient of friction and tension
  • lax1113
  • · Replies 1 ·
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1
What is the Initial Velocity v0 in a Perfectly Elastic Collision?
  • sktgurl930
  • · Replies 3 ·
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3
Melting and boiling temperatures of different substances
  • riyada
  • · Replies 2 ·
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2
Buoyancy without density of fluid
  • Vanessa23
  • · Replies 1 ·
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1
Angle a Block swings while a van turns?
  • eatingblaa
  • · Replies 1 ·
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1
Electricity Homework: Solving 3 Questions
  • Jp_Garant
  • · Replies 2 ·
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2
Pulley and tensions in string segments
  • ritwik06
  • · Replies 1 ·
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1
Expansion of ideal gas into a vacuum
  • erty
  • · Replies 8 ·
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8
Determine the angle of the neutron
  • Bones
  • · Replies 1 ·
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1
What Is the Center of Mass Position for Three Aligned Cubes?
  • Bones
  • · Replies 1 ·
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1
Stability of Drink and Bottle on Train Table
  • TFM
  • · Replies 7 ·
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7
How Do You Determine the Overall Spring Constant in a Dual-Spring System?
  • lobrice
  • · Replies 1 ·
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1
Calculating Torque: Net Torque for 2 Forces Applied in a Plane
  • cali_sk8er205
  • · Replies 3 ·
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3
Is My Physics Homework Calculation Correct?
  • david18
  • · Replies 1 ·
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1
Conservation of momentum with friction
  • Thepoint
  • · Replies 1 ·
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1
Using an angle and time to find Acceleration
  • swede5670
  • · Replies 6 ·
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6
ElectroMagnetic Induction - HELP
  • krugertown
  • · Replies 1 ·
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1
Constraint Relations Homework: Acceleration of Block
  • ritwik06
  • · Replies 1 ·
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1
What Is the Time to Maximum Speed in a Simple Pendulum?
  • eatingblaa
  • · Replies 2 ·
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2
What Determines the Period of a Physical Pendulum?
  • jbgibson
  • · Replies 2 ·
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2
Problem iwth calculating the movement of my solar car
  • greeklegend14
  • · Replies 2 ·
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2
How Is Acceleration Calculated in a Pulley System with Friction?
  • Kingrick
  • · Replies 5 ·
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5
Why Does a Teardrop-shaped Roller Coaster Loop Improve Safety and Performance?
  • frosti
  • · Replies 1 ·
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1
Angualar Acceleration of swinging rod
  • scarletcrimso
  • · Replies 1 ·
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1
Ladder Equilibrium: Can 65kg Person Climb Without Slipping?
  • RedBarchetta
  • · Replies 1 ·
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1
Normal force, acceleration and tension
  • livblue23
  • · Replies 1 ·
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1
Calculating Energy Transfer for 75kg Boy Sliding Down Hill
  • phys1618
  • · Replies 1 ·
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1
Inelastic collision: finding initial velocity of projectile
  • phys1618
  • · Replies 1 ·
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1
Vector Motion Problems: Finding Direction and Speed of a Plane
  • zack558
  • · Replies 2 ·
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2
Conservation of energy problem (projectile with air drag)
  • azure kitsune
  • · Replies 2 ·
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2
Rotational Kinetic ENERGY (well laid out)
  • avenkat0
  • · Replies 2 ·
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2
How do you solve this simple differential equation?
  • elcotufa
  • · Replies 3 ·
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3
Solving Blood Pressure Problem with Fluids: Pressure
  • maniacp08
  • · Replies 5 ·
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5
What Is the Final Velocity and Direction of Two Colliding Skaters?
  • uno
  • · Replies 3 ·
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3
What Determines the Monkey's Acceleration When It Stops Climbing?
  • mbisCool
  • · Replies 1 ·
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1
Energy in a spring-mass system problem
  • lebprince
  • · Replies 8 ·
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8
Elevator Problem: Find Scale Reading in Falling Elevator
  • Toxage
  • · Replies 3 ·
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3
Forced oscillation (mass & spring)
  • kash25
  • · Replies 5 ·
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5
Air Resistance of coffee filter
  • lebprince
  • · Replies 5 ·
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5
Calculating Radius of Jupiter's Orbit: A Synchronous Satellite Problem
  • leisiminger
  • · Replies 1 ·
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1
Calculating Electric Forces and Fields for Multiple Point Charges
  • soccerdude28
  • · Replies 2 ·
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2
Unlocking 3D Equilibrium and Moments
  • Oblivion77
  • · Replies 1 ·
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1
Finding magnitude of external field from two magnetic fields
  • rosstheboss23
  • · Replies 2 ·
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2
Finding Speed at Point A for Particle on Curved Runway
  • Inertialforce
  • · Replies 1 ·
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1
Pendulum, find the damping constant of the air.
  • hemetite
  • · Replies 1 ·
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1
Gravitational attraction between 3 masses.
  • lsatwd
  • · Replies 2 ·
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Block Pulled Up Slope/Coefficient Of Kinetic Friction.
  • kaylanp01
  • · Replies 6 ·
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6
How Do You Calculate Rope Tension with a Hanging Boy?
  • CyndiRae
  • · Replies 1 ·
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1
Which box ends up moving faster
  • 05holtel
  • · Replies 1 ·
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1
Circular motion of a train magnitude and angle
  • tyro008
  • · Replies 1 ·
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1
Rotational KINEMATICS (confusing)
  • avenkat0
  • · Replies 5 ·
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5
Moment of Inertia of a Disk rotating around a rod
  • thejinx0r
  • · Replies 7 ·
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7
Circular kinematics a star in orbit around another star.
  • lalalah
  • · Replies 4 ·
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4
What Diameter Should Parachutes Be to Slow a Landing Aircraft?
  • Spimon
  • · Replies 7 ·
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7
Solve Bungee Jump Issue: Derive Expression for x Double Dot, Show mg >= kh/4
  • Aihara
  • · Replies 1 ·
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1
Calculating Speed of Mass on a Spring
  • lebprince
  • · Replies 2 ·
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2
Electron transmission naming conventions
  • Andrusko
  • · Replies 1 ·
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1
Force and Kinetic friction problem
  • bmandrade
  • · Replies 25 ·
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25
Solved: Help With Energy Problem Homework
  • Kudo Shinichi
  • · Replies 5 ·
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5
What Is the Acceleration of Masses on an Inclined Plane with Friction?
  • leisiminger
  • · Replies 1 ·
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1
How is the acceleration of objects on an inclined plane determined?
  • leisiminger
  • · Replies 9 ·
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9
1 dimensional elastic collision
  • IniquiTrance
  • · Replies 4 ·
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4
Determining the Force acting on a Particle
  • kacete
  • · Replies 1 ·
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1
Hanging sign question - equillibrium (with picture)
  • strangemagic
  • · Replies 1 ·
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1
Find power given:velocity,CoFriction,Mass,slope angle
  • helpmedude
  • · Replies 7 ·
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7
Solving AP Physics: Spring Compression Problem
  • devolg632104
  • · Replies 1 ·
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1
Force on coaster = ma(c) + ma(g) ?
  • CaptainADHD
  • · Replies 3 ·
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3
Finding the number of revolutions for an car in an angular system
  • tyro008
  • · Replies 2 ·
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2
Cant get to grips with re arranging formulae
  • chaz699
  • · Replies 28 ·
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28
Finding time in circular motion
  • tyro008
  • · Replies 10 ·
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10
Canceling Magnetic Field between two wires using an external force
  • rosstheboss23
  • · Replies 2 ·
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2
What are the Work and Energies of Mass A and B in a Pulled System?
  • Eternal Sky
  • · Replies 2 ·
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2
Speed Ratio of Particle A to B?
  • bmandrade
  • · Replies 14 ·
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14
Magnitude and Direction of Force
  • chadovP
  • · Replies 5 ·
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5
Understanding the Relationship between Heat Capacity and Internal Energy
  • mhellstrom
  • · Replies 3 ·
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3
Finding the Stretch in a Spring for a 2D Equilibrium Problem
  • Oblivion77
  • · Replies 19 ·
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19
What Spring Constant is Needed for a Spring-Launched Roller Coaster?
  • cyclemun
  • · Replies 8 ·
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8
How to Find the Balancing Mass and Supporting Tension in a Beam?
  • Kingrick
  • · Replies 1 ·
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1
How is kinetic energy distributed in an explosion with unequal masses?
  • afjunkie
  • · Replies 12 ·
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12
Drawing Lines at the Right Angle
  • david18
  • · Replies 1 ·
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1
Projectile motion. Relationship between R and theta
  • kevinfoss7
  • · Replies 2 ·
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2
How Do Forces Change as You Climb a Ladder?
  • Inertialforce
  • · Replies 3 ·
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3
Magnetic Flux and Faraday's Law
  • Kathi201
  • · Replies 13 ·
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13
How Is the Force of Friction Calculated for a Block Against a Wall?
  • thaixicedxtea
  • · Replies 1 ·
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1
Missing Mass: What is the Mass of Block 2 in a System of Three Blocks?
  • Sherrylee
  • · Replies 2 ·
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2
How do I approach resistors 7-9 and 10-12 in a resistor network?
  • Sanctam
  • · Replies 3 ·
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3
Unpacking the Science Behind Fluorescent Light Tubes
  • marco123
  • · Replies 2 ·
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2
How Do You Solve Kirchhoff's Loop Equations for Currents I1, I2, and I3?
  • StephenDoty
  • · Replies 1 ·
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1