Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Measuring and container math problem
- pcfighter
- · Replies 6 ·
Average speed and velocity for a horse moving away then back toward trainer
- wadesweatt
- · Replies 2 ·
How much rain fell on a 5 km × 9 km city with 1.1 cm rainfall?
- wadesweatt
- · Replies 4 ·
Collision of bullet with mass hung from tree
- devanlevin
- · Replies 10 ·
Why Don't Air Molecules Gather Solely at Earth's Surface Despite Gravity?
- jlm44
- · Replies 2 ·
Force exerted by tabletop on incline with sliding block
- tanzl
- · Replies 1 ·
How do I determine the support reactions in a method of joints truss?
- mikel lowery
- · Replies 3 ·
Calculating the mass and number of atoms of a structural I beam.
- hsbc2003
- · Replies 2 ·
Is acceleration zero at the top of a ball's trajectory?
- steviedee
- · Replies 5 ·
Work-Kinetic Energy Theorem question
- tajmann
- · Replies 3 ·
Optics question: What two positions of a lens gives a sharp image?
- LeeLoo
- · Replies 3 ·
How Does Wave Propagation Time Relate to Cable Length and Gravity?
- pcjang
- · Replies 1 ·
Calculating the mass and number of atoms of a structural I beam
- hsbc2003
- · Replies 2 ·
Fun Car Physics Problem. I swear it's wicked fun
- Iamaskier721
- · Replies 4 ·
AP Physics Summer work problems
- Iamaskier721
- · Replies 6 ·
What is the Terminal Voltage of a Battery?
- LHC
- · Replies 4 ·
Can a 70% efficient engine violate the Clausius statement with a reversed Carnot engine?
- Gear300
- · Replies 29 ·
Question-Electrostatics-Point charge and uncharged plate
- GPhab
- · Replies 1 ·
Electric field and force from two point charges on a third charge
- vip_uae
- · Replies 20 ·
How Is the Rocket's Mass Ratio Determined for Specific Speed Goals in Space?
- noppawit
- · Replies 1 ·
Current from magnetic configuration
- AdamNailor
- · Replies 8 ·
Electormagnitics Quests relating coaxil cables and other
- vip_uae
- · Replies 2 ·
Calculating Main Sequence Lifetime.
- adwodon
- · Replies 1 ·
Is my solution correct? About momentum
- noppawit
- · Replies 1 ·
How Do Hinges Affect the Horizontal Force on a Door?
- HarrisonColes
- · Replies 1 ·
Magnetic field between two parallel vertical wires 12 cm apart
- shanie
- · Replies 13 ·
Segment and joint angles problem.
- clokey34
- · Replies 2 ·
AP Physics: Solving Average Acceleration Problem
- azure kitsune
- · Replies 2 ·
Estimate the binding energy of the H2 molecule
- ksachs
- · Replies 3 ·
Finding Index of Refraction (n) Using θi and θr
- shinemono
- · Replies 2 ·
Trouble with drawing vector diagrams.
- dinayork
- · Replies 2 ·
Archer fish projectile motion launch angle inconsistency
- TimH
- · Replies 4 ·
Does the speed of sound depend only on temperature?
- maithie
- · Replies 2 ·
When will two ships collide in reference frame of Earth?
- matt14690
- · Replies 3 ·
Which of position, distance, and displacement are vectors?
- golden_acorn
- · Replies 9 ·
Truck launched by compressed spring: energy, velocity and oscillation period
- mkha0246
- · Replies 4 ·
Drawing equipotential contour map from voltage profile
- fredrick08
- · Replies 19 ·
Finding launch angles for projectile passing through a point
- deltapapazulu
- · Replies 2 ·
How Many Electrons Needed to Balance Gravitational Force Between Two Balls?
- devanlevin
- · Replies 4 ·
Where Is the Electric Field Zero in This Dipole Setup?
- Point Conception
- · Replies 8 ·
How Is Tension Calculated in a Pendulum with Varying Angles?
- devanlevin
- · Replies 3 ·
Spaceship roundtrip to 8 light years away in one year of ship time
- matt14690
- · Replies 2 ·
Calculating the Speed of a Moving Ship in Special Relativity
- matt14690
- · Replies 11 ·
Tossing an item up a slope, calculating it's length from start to landing
- Molecular
- · Replies 1 ·
Relative velocity and Michelson Morley experiment
- Oerg
- · Replies 8 ·
Power needed to accelerate a chain.
- JustRandy
- · Replies 11 ·
Net force, resistance, and work in a box being dragged at constant velocity
- Jacko_065560
- · Replies 5 ·
What fraction of a centimeter equals 1.0 micrometers
- afcwestwarrior
- · Replies 1 ·
Converting kilometers to micrometers
- afcwestwarrior
- · Replies 9 ·
Why does a mass fall 2mg/k on a spring, not mg/k?
- delecticious
- · Replies 5 ·
Energy Conservation in Oscillatory Motion
- kaka2007
- · Replies 2 ·
Application of Aristotle with free fall
- Gear2d
- · Replies 1 ·
Change in momentum of railcart when ball bounces off wall
- sms14
- · Replies 6 ·
Projectile Motion, find max height, TWO POSSIBLE ANSWERS?
- iceman99
- · Replies 13 ·
What Are the Possible Frequencies of Oscillations for a Clamped String?
- Pranas Juozas
- · Replies 5 ·
Calculating Coefficient of Static Friction in Simple Harmonic Motion
- hemetite
- · Replies 11 ·
Why Is the Tension in the Rope Not Matching the Book's Calculation?
- Gear2d
- · Replies 1 ·
Conservation of Momentum in Moving Buckets of Water
- Gear2d
- · Replies 3 ·
Electric field lines and equipotential surfaces for a charged metallic shell
- vip_uae
- · Replies 2 ·
SHM question with no other details
- hemetite
- · Replies 11 ·
Double-slit experiment with radio towers
- gigli
- · Replies 1 ·
What is the minimum force required to keep two cables taut at a given point?
- fociboy
- · Replies 4 ·
How Do You Solve a Projectile Motion Problem with Calculus?
- dominus96
- · Replies 3 ·
Calculating Electric Force and Distance Between Two Charges
- shanie
- · Replies 4 ·
Calculating Electric Force Between Charges in a Dielectric Medium
- Velocity.
- · Replies 2 ·
Acceleration of 80kg vs 65kg mass with 7.5HP go-kart
- oblit
- · Replies 7 ·
What is the Maximum Mass M That Can Be Balanced on Two Wedges Without Slipping?
- learning_phys
- · Replies 7 ·
Radiation intensity and distance?
- gigli
- · Replies 4 ·
Solv'g Displacement Diff for 2 Points w/ 30 Deg. Phase Diff Given f, v
- tigger88
- · Replies 1 ·
How Does a Car Door's Angular Velocity Change as It Slams Shut?
- i<3math
- · Replies 1 ·
Voltage at Halfway Point Between Point Charges in an Equilateral Triangle
- rissa_rue13
- · Replies 3 ·
Radius of light circle from underwater point source at 0.525 m depth
- gigli
- · Replies 9 ·
Magnetic moment of an orbitting charge
- wbrigg
- · Replies 2 ·
How Does a Transformer's Secondary Coil Behave in Different Circuit Conditions?
- herich
- · Replies 1 ·
Simple pendulum, det the change of its period?
- hemetite
- · Replies 11 ·
Projectile motion in inclined planes?
- somnambulist
- · Replies 1 ·
VCE Physics 2006 Exam Q3: Transistor Questions
- sanado
- · Replies 2 ·
How Does Switching a Magnetic Field Affect Coil Flux and Induced Current?
- TheKovac
- · Replies 1 ·
Spring Kinematics and Electricity/magnetism properties.
- Plutoman
- · Replies 2 ·
Body dropped from tower travels half distance in last second
- spsundaram
- · Replies 2 ·
Motorcycle Velocity Difference and Acceleration Problem
- Caitlin.Lolz.
- · Replies 1 ·
Solved It: How I Fixed a Complex Problem
- jamespeterstu
- · Replies 1 ·
Pin frame BCFGD with 20 kN vertical load at C and 10 kN horizontal load at D
- geoffishere
- · Replies 9 ·
Velocity of air in compressed air tube
- Aqueous
- · Replies 4 ·
Air Wedge radius of the wire Problem
- Zukie91
- · Replies 7 ·
Interpreting displacement-time graph with positive and negative slopes
- Gear2d
- · Replies 5 ·
Angular Diameter of Sun: Radius, Area, and Power
- yiuscott
- · Replies 2 ·
Horizontal displacement for projectile at 50 m/s and 45 degrees
- Lostone
- · Replies 13 ·
Does external charge affect the electric field on a Gaussian surface?
- yti1211
- · Replies 3 ·
Can both average velocity and displacement be correct for constant area under v-t curve?
- yti1211
- · Replies 2 ·
Strength of a magnetic field around a wire with current
- gigli
- · Replies 3 ·
Calculating Resolution of Space Camera for Imaging Earth
- Vanush
- · Replies 11 ·
Induced EMF in a shrinking conducting loop
- carus88
- · Replies 3 ·
How long does it take for the dart to travel the length of the barrel?
- musicxisxlove
- · Replies 3 ·
Is the Electromagnetic Wave Equation Invariant Under Galilean Transformation?
- Amith2006
- · Replies 3 ·
Asteroid in a circular orbit about the Sun
- sstoning
- · Replies 3 ·
Why is the speed of sound from a jet moving at 100m/s through air still 340m/s?
- Gear2d
- · Replies 1 ·
What Is the Maximum Speed of a Trebuchet's Payload?
- Zukie91
- · Replies 19 ·
How Does Electron Drift Speed Affect Current Flow in Copper Wires?
- carus88
- · Replies 1 ·
Contraction of spring colliding with balls
- devanlevin
- · Replies 1 ·