Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Represent combinations of units in SI form
- christian71
- · Replies 1 ·
Snapshot Graph of String Displacement at Time Instant
- admartin
- · Replies 1 ·
Which box will start to slide first?
- Kelsob
- · Replies 2 ·
Initial Compressed Spring Force
- Cpt. DeMorgan
- · Replies 3 ·
Calculating Average Acceleration of a Bouncing Super Ball
- MG5
- · Replies 2 ·
Avoiding vehicular rear-end collision
- PhizKid
- · Replies 39 ·
Two stones thrown from cliff: why is my answer different from the book?
- MrWarlock616
- · Replies 6 ·
Specific Heat Capacity of aluminum rivets
- moimoi24
- · Replies 7 ·
Resistance of an interesting circuit
- fawk3s
- · Replies 6 ·
Terminal Velocity and Millikan's Oil Drop Experiment
- LearninDaMath
- · Replies 5 ·
Finding 2 resistances in which case the power doesnt change
- fawk3s
- · Replies 20 ·
Physics homeowork Average Velocity
- MMM123456
- · Replies 3 ·
What Is the Speed of a Package Dropped from an Ascending Helicopter?
- bdh2991
- · Replies 4 ·
Heat released during freezing of water
- tyneoh
- · Replies 5 ·
Numerical problem on vector algebra - components of vectors
- SickPhysics
- · Replies 1 ·
Kayaker paddling across a harbor
- magic-400
- · Replies 3 ·
Finding Centripetal Acceleration?
- wheeliekid
- · Replies 1 ·
How Do Velocity and Acceleration Vectors Interact in Different Scenarios?
- jlyu002@ucr.e
- · Replies 12 ·
Finding velocity using momentum and energy conservation
- utkarshakash
- · Replies 6 ·
Plastic Balls in a Test Tube with Mass
- PeachBanana
- · Replies 9 ·
How Does Frequency Affect Phase in a Resistor-Capacitor Circuit?
- FutileSentiet
- · Replies 11 ·
Point Charges, Maginitudes and Electric Fields.
- Northbysouth
- · Replies 7 ·
Fundamental Frequency of Two Pipe Organs
- Northbysouth
- · Replies 5 ·
Volumetric Expansion and Overflow
- mexqwerty
- · Replies 1 ·
Decibels, Waves, Kinetic Energy and Mosquitos
- Northbysouth
- · Replies 2 ·
Calculating Gas Volume and Molecule Count in Lungs During Submarine Emergency
- mexqwerty
- · Replies 1 ·
Solving for the minimum speed a car must have to catch up to another car?
- PastaTapestry
- · Replies 8 ·
Jump height difference in two different gravities
- Dreaming
- · Replies 8 ·
Freefall Arrow Problem: Finding the initial speed and maximum height
- Parkkk41
- · Replies 1 ·
Charged ball within spherical shell charge problem
- Tilted
- · Replies 1 ·
A slice causes a tennisball to spin and deviate from its normal parabolic path.
- jlyu002@ucr.e
- · Replies 8 ·
Projectiles - Are my answers correct?
- phospho
- · Replies 2 ·
Calculate New Power when adding a Resistor
- Apaullo13
- · Replies 2 ·
Finding initial velocity and acceleration of car B given meeting distances
- PhizKid
- · Replies 9 ·
What is the answer to the elastic momentum problem?
- bubakazouba
- · Replies 5 ·
What is the efficiency of the cycle
- tyler7686
- · Replies 4 ·
Finding the maximum height given multiple variables
- kaitwhit
- · Replies 1 ·
Finding the lift force on an airplane
- Ripe
- · Replies 14 ·
Electric field and Guass' Law question
- l1fesavers
- · Replies 65 ·
Is the Compton wavelength equal to 2*pi*r, the radius of an electron?
- StephenD420
- · Replies 1 ·
Engineering Problems - Acceleration Required to Separate Ions
- Erna221
- · Replies 1 ·
Free-Body Diagram for Statics of a Crane
- unscientific
- · Replies 15 ·
Man in bosun's chair pulling himself up with pulley
- Danniboi
- · Replies 7 ·
Very simple circuit of 2 batteries
- aaaa202
- · Replies 9 ·
Is My Approach to Solving This Complex Physics Problem Correct?
- phunphysics2
- · Replies 4 ·
I need a formula for bouncing balls
- steven1495
- · Replies 4 ·
Calculating Rigidity Modulus Using Torsional Couple Equation
- easwar2641993
- · Replies 4 ·
What is the magnetic field of a point charge moving through space?
- aaaa202
- · Replies 2 ·
How Does Gauss' Law Apply to Infinite Charge Slabs?
- shanty
- · Replies 2 ·
Acceleration overcoming Velocity. Over what time frame?
- Maiton
- · Replies 2 ·
Induced EMF with coils in series and parallel
- charmedbeauty
- · Replies 12 ·
Quantum mechanics: how to sketch the wave function?
- Fatimah od
- · Replies 34 ·
Is Constant Speed Equal to Acceleration?
- Hannah1
- · Replies 3 ·
Energy Conservation in RLC circuit
- Opus_723
- · Replies 5 ·
Dependent sources - can the gain (g) be negative?
- lillybeans
- · Replies 1 ·
What is the final velocity of a tossed rock falling into a hole?
- student1010
- · Replies 1 ·
Direction of Forces on an Inclined Plane
- tlonster
- · Replies 7 ·
What is the significance of F being a roller joint in this system?
- theBEAST
- · Replies 5 ·
Find Components of Force F with Angles x, y, and z
- Mosaness
- · Replies 23 ·
How Fast Must the Runner Sprint to Beat the Baseball to Home Plate?
- hmcaldwell01
- · Replies 2 ·
In a noninertial reference frame, am I moving with it?
- snoopy82
- · Replies 1 ·
Why does an object gain potential energy when a field does negative work?
- Peter G.
- · Replies 5 ·
How Do You Model a Car's Decreasing Acceleration Mathematically?
- hmcaldwell01
- · Replies 1 ·
Calculating potential from a nonuniform linear charge distribution.
- r0wbrt
- · Replies 2 ·
Find coefficient of kinetic friction on an inclined plane.
- shandsy
- · Replies 3 ·
Waves, pulses, sound and things of that nature
- PhillipRussel
- · Replies 2 ·
What Is the Maximum Safe Depth for the Submarine with a 40cm Window?
- KINkid92
- · Replies 3 ·
Time it takes for an object to hit the ground
- AryRezvani
- · Replies 7 ·
How Do You Calculate Electric Flux Through a Cube with a Central Charge?
- bmb2009
- · Replies 6 ·
What is the Maximum Height and Flight Time of an Arrow Fired Upward?
- joel amos
- · Replies 1 ·
Wave power and intensity in acoustic and electromagnetic waves
- PhillipRussel
- · Replies 8 ·
What is the index of refraction of the tank's walls?
- asdklfhjaskjf
- · Replies 1 ·
A Glider of length moves through
- AryRezvani
- · Replies 3 ·
A problem about stationary waves ?
- Douna2nd
- · Replies 7 ·
Why can't I get 87.7 degrees for the plane's heading angle?
- theBEAST
- · Replies 12 ·
Max Height of Ball Thrown Up in 0.5 Seconds at 2m Window
- PhizKid
- · Replies 2 ·
One-Dimensional distribution of Molecular Velocity Questioin
- ramsharmjarm
- · Replies 1 ·
Force on the bottom of a water-filled beaker
- Nellen2222
- · Replies 3 ·
How to Calculate Energy Lost in a Rolling Sphere?
- Noxus
- · Replies 6 ·
Two explosions occur, spaceship is flying overhead at 0.6C, which occurs first?
- Mrbilly
- · Replies 3 ·
Equation for the Motion of a Charged Particle in an Electric Field
- BOYLANATOR
- · Replies 2 ·
Throws a stone horizontally with a velocity of 20ms-1
- moimoi24
- · Replies 28 ·
Finding point loads in shear force diagram
- Sl1ver
- · Replies 9 ·
Which Vehicle Has a Greater Impact Force: 1500kg at 50mph or 2000kg at 30mph?
- h9376w
- · Replies 3 ·
What Is the Displacement of the Centre of Mass When a Man Climbs a Ladder?
- utkarshakash
- · Replies 2 ·
What force causes a dropped block to rotate with a spinning disc?
- Leong
- · Replies 1 ·
Slight confusion concerning Newton's first law
- Ripe
- · Replies 21 ·
Calculating the tesion in a string holding a 1 meter stick
- saurabheights
- · Replies 3 ·
Which Particle Has More Electric Potential?
- kougou
- · Replies 1 ·
Derive Wien's Law from Plancks Law
- Mosaness
- · Replies 2 ·
Charged ring with oscillating particle
- nautola
- · Replies 1 ·
RC Circuits Voltage: Solving for V(out) with Loop Rule
- Dens
- · Replies 1 ·
How Do You Determine the Fourth Leg and Angles in a Sailboat Race Course?
- vane12
- · Replies 1 ·
Gamma Ray Energy from Decay of Boron
- TheBoy
- · Replies 1 ·
Vector magnitude on an inclined plane - should be a quick answer
- tlonster
- · Replies 4 ·
Work in isothermal expansion against constant external pressure
- jaumzaum
- · Replies 2 ·
Problems with finding initial velocity of an object
- lGLOVEl
- · Replies 3 ·
Lorentz transformations - relative speeds of frames
- ElijahRockers
- · Replies 8 ·
Three balls are dropped, find position of each ball
- Phys121VIU
- · Replies 7 ·
Can displacement be greater than, less than, or equal to total distance?
- jlyu002@ucr.e
- · Replies 2 ·