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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MCQ: Ideal Gas Flow Out of Balloon with Temp Increase
- kalupahana
- · Replies 1 ·
Block sliding down a frictionless wedge using center of mass
- DDarthVader
- · Replies 23 ·
Electromagnet project - questions
- jacobcampbell
- · Replies 2 ·
Runner accelerates to finish 10,000m in under 30 minutes
- NRasmus1
- · Replies 2 ·
Velocity of a box going up an inclined plane.
- Berean7
- · Replies 4 ·
Dimensions of the Coriolis force expression ωc/√G
- help1please
- · Replies 16 ·
Bar coming to a rest (vertical position)
- Krappy
- · Replies 2 ·
Bit of confusion with coils and electromagnetic induction
- curiousjoe94
- · Replies 1 ·
Frequency and length of a flute
- yumito
- · Replies 1 ·
Why Is the Angle the Same for Different Weights in a Chair-O-Plane?
- ehabmozart
- · Replies 2 ·
Why does an airplane bank when turning in a horizontal circle?
- ehabmozart
- · Replies 6 ·
Electric Potential Energy with Three Postive Charges
- starthorn
- · Replies 2 ·
Discharging a capacitor - how long does it take
- jsmith613
- · Replies 31 ·
Charging and Discharging capacitor problem .
- nishantve1
- · Replies 4 ·
Why Measure Angles to the Side of the Yellow Line in Spectra Experiment?
- NitroNinja
- · Replies 1 ·
Why are narrow discharge tubes preferred for viewing spectra?
- NitroNinja
- · Replies 1 ·
Finding the force up an incline given horizontal force
- OneObstacle
- · Replies 3 ·
Equation of Continuity-Three Fire Hoses and Pipes
- varyvod001
- · Replies 1 ·
Constant-volume gas thermometer with van der Waals equation
- johnconnor
- · Replies 13 ·
Angular Displacement Differentiation
- richyr33
- · Replies 2 ·
Finding Avogadro's constant from NaCl crystal structure
- johnconnor
- · Replies 11 ·
Year 12: Cambridge Physics Problem (Rate of increase of ice thickness)
- johnconnor
- · Replies 3 ·
Three point charge in a plane (electricity in physics II)
- jrk012
- · Replies 3 ·
Is My Lorentz Transformation Calculation Correct?
- bckcookie
- · Replies 11 ·
Bullet passing through pendulum block for full circle motion
- DDarthVader
- · Replies 26 ·
Year 12: Cambridge Physics (Calculus in Specific heat capacity)
- johnconnor
- · Replies 1 ·
Energy pumped into a water rocket? (soda bottle rocket)
- Head_Unit
- · Replies 1 ·
Why can a motorcycle accelerate faster than a large truck?
- Nitrate
- · Replies 2 ·
How can I optimize my physics bottle rocket for maximum height and performance?
- Skeetss
- · Replies 8 ·
Mass on incline plane sliding into spring, need to find max compression
- BryceHarper
- · Replies 9 ·
Finding velocity after 1.20 sec impact from force graph
- Nitrate
- · Replies 14 ·
Why Does Young's Double Slit Experiment Use n + 1/2 Instead of m - 1/2?
- nesan
- · Replies 4 ·
How Does Friction Cause the Bottom Block to Move with the Top Block?
- sideman123
- · Replies 5 ·
Momentum conservation - particle collision
- jsmith613
- · Replies 4 ·
Electron Approaching a Charged Sphere
- jrk012
- · Replies 2 ·
Finding Maximum kinetic energy of ejected electrons
- pleace
- · Replies 2 ·
Angular momentum, transfer of mass between two drums.
- Slickepot
- · Replies 3 ·
Is static frinction a conservative force?
- Stergios
- · Replies 2 ·
Finding equivalent resistance with mixed series and parallel resistors
- arl146
- · Replies 31 ·
Projectile Motion without the Angle
- SHISHKABOB
- · Replies 1 ·
Circular Motion on a Hemisphere: Finding Speed from Geometric Conditions
- IIK*JII
- · Replies 2 ·
Moment equation for a rolling ball in mass-spring system
- syndrome
- · Replies 1 ·
Gravitation Field between the Earth and Moon
- rocketgirl93
- · Replies 19 ·
Gen Physics I: Where can I find good lecture notes/advice?
- ChiralWaltz
- · Replies 4 ·
Problem in solving question related to acceleration and velocity
- hasnainzeenwa
- · Replies 2 ·
Energy to separate one molecule of water from a single neighbour
- johnconnor
- · Replies 3 ·
How Far Will the Stone Travel Horizontally Before Hitting the Ground?
- professordad
- · Replies 7 ·
Blackbody radiation intensity find maximum
- Talltunetalk
- · Replies 4 ·
Would a toy car wheel count as a simple machine?
- PinguNinja
- · Replies 1 ·
How Fast Do Toothbrush Bristles Move?
- phyhelp
- · Replies 1 ·
1-D Kinematics Problem/Free Fall. A helicopter carrying Dr. Evil
- Unix
- · Replies 1 ·
How to force forces of the floors
- texasfight
- · Replies 1 ·
Principles of conservation of energey
- djstar
- · Replies 2 ·
Physics problem : Oscillating circuit
- Voidbane
- · Replies 1 ·
What Questions Could Be Asked in a Pendulum Practical Assessment?
- onedaysnotice
- · Replies 3 ·
Flux Linking with Aluminium Disk Above a Vertical Current Carrying Rod: AC vs DC
- jsmith613
- · Replies 1 ·
Kinda hard problem involving friction and a spool.
- charmedbeauty
- · Replies 39 ·
Torque required to lift a given mass around a point.
- Daz50
- · Replies 3 ·
How Do Electromagnetic and Regenerative Braking Systems Work?
- jsmith613
- · Replies 2 ·
What is the force required to push a block of ice up an incline?
- polishguy1234
- · Replies 9 ·
Average stopping acceleration in NASA drop tower problem
- theintarnets
- · Replies 5 ·
Simple Harmonic Motion Homework: Finding Velocity, Time, and Constant Values
- Knightycloud
- · Replies 7 ·
Determine the modulus of elasticity, Poisson's ratio and the shear modulus.
- texasfight
- · Replies 1 ·
What is the potential difference between points A and B in a circuit?
- kalupahana
- · Replies 5 ·
Prove square of four-momentum is relativistic invariant
- Falken_47
- · Replies 2 ·
Block Acceleration up an Inclined Plane
- nobodyuknow
- · Replies 16 ·
Calculate spring constant for cart attached to a spring
- SharpCode
- · Replies 2 ·
Conservation of angular momentum
- zezima1
- · Replies 13 ·
Two carts on a frictionless AIR Track held together then released with a sping.
- SharpCode
- · Replies 4 ·
Can You Solve These Puzzling Science Questions?
- TestTomorrow
- · Replies 1 ·
Charging capacitor - no resistor
- jsmith613
- · Replies 5 ·
Easy Ratio Vector Question, but not sure if answer is wrong
- geoff18
- · Replies 1 ·
How Long Does It Take a Model Rocket to Reach Maximum Height?
- professordad
- · Replies 3 ·
Current through a resistor in a network
- arl146
- · Replies 19 ·
How Many Electrons Are in Aluminum Spheres?
- sckeen1988
- · Replies 3 ·
Solving for Betty's Force in a 2-D Tug of War
- wbetting
- · Replies 1 ·
Find angle that satisfies the following
- snellslaw
- · Replies 2 ·
Inclined place friction problem
- wbetting
- · Replies 2 ·
Pebble being dropped into a well
- professordad
- · Replies 4 ·
Speed, acceleration, and friction on a spinning carnival drum ride
- dani123
- · Replies 20 ·
Finding the temperature of Venus
- kid_123
- · Replies 1 ·
When do clock hands on planet X first align after midnight?
- phyhelp
- · Replies 8 ·
Calculating Voltage in a Circuit with Capacitors and Resistors
- jsmith613
- · Replies 12 ·
Vertical SHM. Find f with A and drop height
- MrMaterial
- · Replies 1 ·
Why Do Electric Field Lines Never Cross?
- ness87
- · Replies 1 ·
Finding final velocity of charged particle in electric field
- skye204
- · Replies 3 ·
SHM problem with Momentum and Energy
- MrMaterial
- · Replies 2 ·
[Confuse]Capacitor and resistor in DC circuit,
- IIK*JII
- · Replies 11 ·
Spaceship question: Problems with Length Contraction
- harts
- · Replies 3 ·
Tension in rotational motion problem
- freshbox
- · Replies 17 ·
Coordinate transformation of a tensor in 2 dimensions
- physicus
- · Replies 2 ·
Want to know how to prove ohm's law
- shruti22
- · Replies 2 ·
Find Projection of (A+C) in B's Direction
- LocalStudent
- · Replies 4 ·
Capacitance and voltage relationship
- jsmith613
- · Replies 6 ·
Energy of singly ionised hydrogen molecule H₂⁺
- johnconnor
- · Replies 8 ·
Plotting spring motion with friction in Mathematica
- Fre4k
- · Replies 12 ·
Can a 70 kg man jump over a 0.8 m barrier?
- charmedbeauty
- · Replies 6 ·
Calculating Time for a Car to Cover Distance with Acceleration
- ashurina
- · Replies 5 ·
Linear acceleration of mass falling from rotating disk
- andrewwg94
- · Replies 1 ·
Car accelerating at 0.076 m/s² over 9.97 km distance
- ashurina
- · Replies 2 ·