Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How Does an Unusual Force Affect Harmonic Oscillator Behavior?
- Onias
- · Replies 1 ·
Questions about Electrostatic Fields
- penguin007
- · Replies 2 ·
How Do Counterweights Affect the Sag of a Rope Bridge?
- maroonandgold
- · Replies 1 ·
Circular motion of a car and curve
- pankti_ptl
- · Replies 8 ·
Pushing a box across horizontal surface
- Chandasouk
- · Replies 6 ·
Mass and acceleration for weights on incline with pulley
- mmoadi
- · Replies 18 ·
Uniform rectangular plate equilibrium problem
- kudoushinichi88
- · Replies 1 ·
Calculating Thermal Dilation in Sodium Using Bulk Modulus and Temperature
- daudaudaudau
- · Replies 2 ·
Calculate Resultant Force and Angle of Object at Origin
- zaga04
- · Replies 3 ·
Solve Projectile Speed Problem: Intuition or Formula?
- Jngo22
- · Replies 1 ·
Deriving the resultant intensity formula for two interfering waves
- physlol
- · Replies 5 ·
Angular velocity of 5000 kg satellite orbiting 800 km above Earth
- crazuiee
- · Replies 5 ·
4 identical point charges on a rectangle's corners
- S.U.S
- · Replies 3 ·
How Does Momentum Relate to Gravity in Falling Objects?
- kevinli
- · Replies 2 ·
What Is the Self-Locking Angle for a Block on a Steel Tabletop?
- jumpyroo92
- · Replies 1 ·
Help with 10 physics homework questions on pressure and buoyancy
- snowpanda
- · Replies 16 ·
Particle subject to position dependent force
- jimz
- · Replies 3 ·
Spring Oscillation: Find Greatest Speed of 0.5kg Block
- Leviticus 08
- · Replies 1 ·
Why Is a Styrofoam Cup Cooler to the Touch Than a China Cup?
- Gringo123
- · Replies 1 ·
How do I calculate electricity usage in units?
- Gringo123
- · Replies 4 ·
What Is the Speed of the Triangular Whatchamacallum?
- Chupu
- · Replies 1 ·
Simple little motion problem(at least for you guys)
- Melchoire
- · Replies 22 ·
Don't understand phrasing of Question
- bbb0777
- · Replies 4 ·
What Is the Acceleration of an Object on a 78-Degree Inclined Plane?
- inedhelpinphy
- · Replies 2 ·
Net Work Done on an Object by 3 Forces
- TheSnacks
- · Replies 3 ·
Angle turned relative to earth?
- thedarkone80
- · Replies 4 ·
Basic electric field plates question - almost finished.
- Griffy11
- · Replies 1 ·
Possible source of error in this lab?
- Suy
- · Replies 2 ·
The Sun's Net Gravitational Force
- crazuiee
- · Replies 3 ·
Digital Waveform Graph, Circuit Resistance, and Solenoids
- Griffy11
- · Replies 7 ·
What is the initial velocity of the projectile given the displacement and angle?
- helpmee
- · Replies 13 ·
Finding the initial velocity of a projectile so that it hits a moving object
- bermy_son92
- · Replies 4 ·
Baseball - (2D?) Kinematics - Projectile Motion
- Rker
- · Replies 5 ·
Tension problem involving picture frame
- Chandasouk
- · Replies 7 ·
Pushing a block question (Friction)
- Chandasouk
- · Replies 11 ·
What Speed Would an N2 Molecule Have with Photon Energy of Various Wavelengths?
- solsek
- · Replies 3 ·
Determining Tension in a Frictionless System with Given Mass and Tension
- physixnot4me
- · Replies 2 ·
Calculating Power Output Climbing Stairs
- africanmasks
- · Replies 1 ·
Lenses and Autocollimation: Altering Focal Length and the Lensmaker's Equation
- reb659
- · Replies 1 ·
F_{t} = 0 lbForce on Pilot at Lowest Point of Plane
- KillerZ
- · Replies 3 ·
Capacitance 1/4 correct need b,c,d
- hitman0097
- · Replies 6 ·
Vector Displacement and Magnitude
- waldvocm
- · Replies 17 ·
Calculating Range: Zero Air Resistance, Baseball
- 1irishman
- · Replies 1 ·
Calculating Work and Energy in a Skier Problem
- triplel777
- · Replies 6 ·
Simple Physics Problem - Acceleration Formula
- Dumblydore
- · Replies 3 ·
Absolute Error of a Given Function
- rushton_19
- · Replies 1 ·
Kinematics 2D: Solve Initial Speed of Cork
- to819
- · Replies 1 ·
Finding the critical angle where pushing force cannot move a mop
- demonelite123
- · Replies 4 ·
What Is the Speed of Trucks After a Perfectly Inelastic Collision?
- jake40208
- · Replies 1 ·
Angular velocity when tension equals gravity and disc moment of inertia
- Dawg
- · Replies 1 ·
Baseball Problem - Determine Speed of Ball After Impact
- leezak
- · Replies 1 ·
Car collision: separation during distracted driving and impact speed
- themadperseid
- · Replies 1 ·
How much work is done? (Frictionless plane, xy coodrinates)
- TheSnacks
- · Replies 3 ·
Tension in a string over a pulley
- free-node-5
- · Replies 17 ·
What are the key principles of heat transfer?
- UNknown 2010
- · Replies 1 ·
What is the Amplitude of a Standing Wave on a Guitar String?
- General_Sax
- · Replies 3 ·
How Do Magnetic Fields Influence Parallel Current-Carrying Wires?
- missyc8
- · Replies 3 ·
Newton's Laws magnitude of the force
- Mysteek
- · Replies 6 ·
Velocity-Friction proportionality.
- ssm11s
- · Replies 2 ·
How to handle string intersection in static friction calculation?
- joemama69
- · Replies 5 ·
Frictional force and work problem
- billu77
- · Replies 4 ·
What limit must the force excede if we want to separate two bodies + friction
- mmoadi
- · Replies 1 ·
Projectile motion- initial velocity and launch angle
- mmoadi
- · Replies 17 ·
Index of refraction in an air bubble
- tiger1
- · Replies 1 ·
Therefore, the focal length of the mirror is -1m.
- tiger1
- · Replies 6 ·
Calculating Acceleration for a Warehouse Ramp Pulley System with Friction
- Mirole
- · Replies 5 ·
Can you derive a formula for the critical angle when pulling a thread roll?
- JukuJohannes
- · Replies 1 ·
Finding time and winner in 200 m bicycle race with constant acceleration
- shiga
- · Replies 6 ·
Gaining and losing weight in an elevator
- mmoadi
- · Replies 6 ·
What Is the Maximum Frequency of Sound in Aluminium?
- BringBackF77
- · Replies 2 ·
Mass on a vertical string - Conservation of Energy Problem
- Bryon
- · Replies 4 ·
What is the net force on a test charge at the centre of a tridecagon?
- lufbra08
- · Replies 2 ·
Trigonometry Problem: Solving for Unknowns in a Collision Scenario
- henryc09
- · Replies 3 ·
Maximum compression distance of a spring
- T Roth
- · Replies 5 ·
Draw free body diagramm of all forces acting on skier
- joemama69
- · Replies 4 ·
Skier on 20° incline with friction on horizontal surface
- billu77
- · Replies 6 ·
T = mgcosQHow is tension related to circular motion in a vertical circle?
- joemama69
- · Replies 8 ·
What is the Power Delivered by the Person Pulling the Rope?
- glockstock
- · Replies 5 ·
Kinetic Energy Interpreted as Line Integral?
- merryjman
- · Replies 2 ·
Cat on skateboard throwing books to stop and reverse direction
- r_swayze
- · Replies 3 ·
Vertical Component of a ball rolling off table
- Chuck Norris
- · Replies 21 ·
Center of mass involving changing positions
- chenying
- · Replies 8 ·
Elevator with broken cable converting mechanical energy to thermal energy
- dstahn
- · Replies 1 ·
Calculating Velocity and Using Vector Diagrams in Curved Motion
- bobsagget
- · Replies 10 ·
Calculating Energy Dissipated by Friction
- Sw0rDz
- · Replies 23 ·
Determining Charge Density of Nonconducting Sphere
- jackxxny
- · Replies 14 ·
Car suspension lift when passengers exit after resonant oscillation
- physics_geek
- · Replies 4 ·
2 boxes on flat ground and an incline
- Quevvy
- · Replies 3 ·
Tension and acceleration for two blocks connected by pulley on inclined plane
- katzmeow9
- · Replies 1 ·
Hydrocarbon empirical formula question
- lastlanding
- · Replies 1 ·
Football kicked at 45° clears 3m goal at 37m distance
- Quevvy
- · Replies 2 ·
Can someone explain the matrix method
- dukebdx12
- · Replies 1 ·
Calculating the Speed of a Seagull Diving for Clams in 3.32 Seconds
- Quevvy
- · Replies 2 ·
AP Test on Force Corrections (3 of them, but only one at a time)
- RustyComputer
- · Replies 2 ·
Finding instantaneous velocity from ticker-timer distance data
- Adam SE
- · Replies 3 ·
Centripetal Acceleration - Two people situated at different latitudes on Earth
- crono_
- · Replies 2 ·
How Do You Calculate the Work Done Moving a Fridge Up a Ramp?
- ddn87
- · Replies 10 ·
Projectile Motion and Velocity (LAB)
- djtropicana
- · Replies 1 ·
Finding the magnitude of a circuit
- sweetipie2216
- · Replies 4 ·
Block and mug connected by rope over a pulley
- cruisx
- · Replies 3 ·