Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Explain using Newton's third law of motion
- rrosa522
- · Replies 1 ·
Entropy change when mixing two gases
- toothpaste666
- · Replies 2 ·
A 27-kg chandelier hangs from a ceiling on a vertical
- hitemup
- · Replies 4 ·
How Do Balanced and Unbalanced Forces Affect Object Motion?
- Dhooy7
- · Replies 9 ·
Calculating the Vertical component of the Velocity
- bronteogrady
- · Replies 9 ·
Calculating magnitude of total force (N)
- Mary O'Donovzn
- · Replies 6 ·
Resolving the Paradox: Net External Work in a Falling Ball-Earth System
- EzequielSeattle
- · Replies 2 ·
Balls connected by string--momentum problem
- erisedk
- · Replies 10 ·
Calculating Work Done by Impulsive Force
- erisedk
- · Replies 4 ·
Thin film interference with air gap and single-slit diffraction colors
- whatislifehue
- · Replies 1 ·
Mass Loss in Beta Decay: A_(z+1) Y vs Physics Fact
- gxc9800
- · Replies 5 ·
Finding an angle of trajectory from a tangential launch.
- Jae
- · Replies 1 ·
Friction and tension in a string
- Jennings
- · Replies 33 ·
Does the Center of Mass Have Horizontal Velocity in a Frictionless System?
- cacofolius
- · Replies 3 ·
I need a little intuition my way regarding moments and direction of couples
- CCenturion
- · Replies 1 ·
A -11.8nC point charge and a +23.9nC point charge are 13.8cm apart on the x-axis
- nc9261
- · Replies 2 ·
Height Required for Rollercoaster to Remain on the Track
- B3NR4Y
- · Replies 7 ·
How Do You Calculate Impulse and Force in a Racquetball Collision?
- mememe1245
- · Replies 7 ·
Friction force on a 3.35 kg collar sliding down a spring system
- engineering810
- · Replies 4 ·
Energy Resolution of a solid state X-Ray detector
- garyd
- · Replies 4 ·
Find Velocity of Rod Center of Mass When Making 30° Angle with Horizontal
- Satvik Pandey
- · Replies 16 ·
Thin film / interference question
- whatislifehue
- · Replies 3 ·
Understanding Neutron Star Rotation: Calculating Kinetic Energy
- kennyadams1317
- · Replies 1 ·
How Does Collision Affect Internal Energy in a Two-Vehicle System?
- CaptainOfSmug
- · Replies 2 ·
How to calculate the tension needed for a crosspiece in an A-frame structure?
- homo-sapiens
- · Replies 6 ·
Totally Inelastic Collisions question
- CaptainOfSmug
- · Replies 3 ·
Determine the linear acceleration of the two masses
- Crystal
- · Replies 7 ·
Calculating Velocity: Roofer's Toolbox Sliding on a 36deg Slanted Roof
- rezal
- · Replies 1 ·
Why does a skateboard move backward when you push on it, but the Earth does not?
- LindaJalie
- · Replies 5 ·
Finding 2theta for crystal planes with two cell parameters and two X-ray wavelengths
- decerto
- · Replies 1 ·
What Happens to Acceleration If Net Force Triples?
- lightbender
- · Replies 7 ·
Mass pulled on spring: find work, energy, speed, and equilibrium
- APDEVELL
- · Replies 2 ·
Momentum to Force: Calculating the Velocity Needed
- Keyshawn
- · Replies 5 ·
How to analyze data from an e/M lab
- Eddie10
- · Replies 7 ·
Pulling object at an angle problem
- xasuma
- · Replies 11 ·
Resultant linear acceleration at the rim of a disk
- fuddyduddy
- · Replies 8 ·
2 questions--seems simple -- Heisenberg Uncertainty
- fu11meta1
- · Replies 2 ·
Impulse and Coefficient of Restitution from Ball Drop
- KatyM7
- · Replies 3 ·
When Does a Disc Reach Its Average Angular Velocity During Each Revolution?
- Meadow_Lark
- · Replies 10 ·
Will a lighter object with equal kinetic energy stop a heavier moving ball?
- bobie
- · Replies 29 ·
Calculating Tension in Ropes Connecting Multiple Barges
- KatyM7
- · Replies 4 ·
Velma and Mort relative motion question
- kirsten_2009
- · Replies 1 ·
Special relativity and relative motion question
- kirsten_2009
- · Replies 2 ·
Calculate Tension Forces in Rope for Two Barges
- KatyM7
- · Replies 2 ·
What is the difference between above and below the horizontal?
- kitkat87
- · Replies 2 ·
Cannonball fired at 20° from cliff with 3.5s flight time
- LuckyIam
- · Replies 9 ·
Static equilibrium and rope tension
- Lord Anoobis
- · Replies 2 ·
Inelastic Collision Energy loss
- camorin
- · Replies 1 ·
Power Delivered From Black Body
- ThatGuyYeah
- · Replies 4 ·
Rolling Friction of Bicycle Tires
- neongoats
- · Replies 1 ·
How Do You Calculate the Force Constant of a Spring?
- treeelf5150
- · Replies 2 ·
Circular motion of a steel block
- neurospade
- · Replies 8 ·
Electrical potential involving a spacecraft
- dmack15
- · Replies 5 ·
What is the natural force of a 25kg block that is not moving?
- Angieesaurus
- · Replies 5 ·
Therefore, the angular acceleration is 3.925 rad/s2.
- gcombina
- · Replies 2 ·
Calculating Velocity after Skateboard Jump - A Physics Problem
- adriannesmith
- · Replies 1 ·
What is the magnitude of acceleration for a block released up an inclined plane?
- Eunes
- · Replies 10 ·
Calculating Building Height and Rocket Trajectories
- Natalie89
- · Replies 6 ·
How to determine which point to take the moment about?
- CCenturion
- · Replies 3 ·
Potential of Point A to Point B in Difficult RC Circuit
- AGGENGR
- · Replies 6 ·
Electric potential linear charge
- deedsy
- · Replies 3 ·
Pulling a sled up a 12° slope with friction
- Summer95
- · Replies 5 ·
Frictional Force Direction Problem
- amitSingh95
- · Replies 13 ·
How Long Should Radiation Therapy Last After Two Years to Match Initial Dosage?
- somecelxis
- · Replies 2 ·
How Long Does It Take for a Car to Stop with Friction After Engine Shutdown?
- Troubadour
- · Replies 3 ·
Identify the following motions as positive or negative accelerations
- selcouth
- · Replies 2 ·
Finding unoccupied volume in a body-centered cubic lattice
- astrophysics12
- · Replies 8 ·
Can You Verify My Calculations on Spring Compression and Energy Transfer?
- The Wanderer
- · Replies 1 ·
Calculating the velocity of a hanging object attached to a disc
- EzequielSeattle
- · Replies 9 ·
Calculate the difference in height of the fluid levels
- NZBRU
- · Replies 11 ·
Circuit with 3 batteries and 4 resistors
- icesalmon
- · Replies 4 ·
I have a qeation from my work book that i cant solve.
- Myvar
- · Replies 3 ·
A weight suspended by two strings
- LLR
- · Replies 16 ·
Solving for Compressed Spring Distance after Collision
- FaraDazed
- · Replies 4 ·
Pendulum Speed at Different Heights
- xasuma
- · Replies 5 ·
Solving for v_y max in a Spin-Friction Free Tennis Ball Model
- powerof
- · Replies 4 ·
Problem involving a skier, friction and conservation of energy
- honeyspells
- · Replies 2 ·
Determine ruling from grating constant
- Alexandra7
- · Replies 4 ·
What are the steps to solve a work problem?
- LexRunner
- · Replies 3 ·
Prelab rotational motion question
- FlorenceC
- · Replies 1 ·
Horizontal force and work for suspended mail bag displaced 3 m
- honeyspells
- · Replies 4 ·
How do small errors affect jet impingement vane calculations?
- udontai
- · Replies 1 ·
Why won't a 230V laptop charger work on 110V mains?
- Barclay
- · Replies 3 ·
Maximum Acceleration and Coefficient of Friction
- Jazz
- · Replies 3 ·
Calculating Mass of a Block in SHM with Given Parameters
- SpyIsCake
- · Replies 14 ·
Centripetal Acceleration of car
- bgrove
- · Replies 2 ·
Finding frictional force on a 6 kg cart with 10.5 N applied force
- karajo
- · Replies 6 ·
How Long Will It Take for the Entire Chain to Slide Off the Table?
- Satvik Pandey
- · Replies 114 ·
What is the effect of applied pressure on a partially filled U-shaped tube?
- Dudleyz
- · Replies 1 ·
Ranking Rotational Inertia Task
- B3NR4Y
- · Replies 4 ·
How Can You Design an Adiabatic and Reversible Thermodynamic System?
- decerto
- · Replies 3 ·
What is the current through each resistor in this circuit?
- Rodgerd
- · Replies 3 ·
Hammer striking an anvil with a velocity of 50ft/sec
- Dustinsfl
- · Replies 4 ·
Calculating the average force of a molecule in a vessel
- PhyIsOhSoHard
- · Replies 1 ·
Is relative velocity confusing in multiple vector systems?
- Hijaz Aslam
- · Replies 4 ·
When does work equal change in PE versus change in KE?
- LexRunner
- · Replies 1 ·
Finding vC(t) for a Critical Damping RLC Circuit
- MattHorbacz
- · Replies 1 ·
I understanding conceptual question for particle tracks in a chamber
- Lopez
- · Replies 5 ·