Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
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 ·
Baseball: Rising and Falling speed
- Trizz
- · Replies 1 ·
How much work is required to stop a moving block?
- ddn87
- · Replies 5 ·
Finding Current in a Long Solenoid
- missyc8
- · Replies 2 ·
How Do Weight Distribution and Torque Affect Scale Readings?
- jibjab
- · Replies 1 ·
Car rolling off cliff and falling package kinematics
- Trizz
- · Replies 5 ·
Particle Motion with Constant Acceleration
- Loppyfoot
- · Replies 8 ·
Circular Motion Conceptual Physics - Space Station
- Dysprositos
- · Replies 4 ·
How do you calculate circular acceleration and force for a racing car?
- itsmarasilly
- · Replies 6 ·
Finding resultant magnitude and location of a distributed load system
- Dellis
- · Replies 4 ·