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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Solving a Balloon Mass Calculation: Find Minimum Gas Mass Needed
- etothey
- · Replies 3 ·
Thermodynamics: Solving for Initial Temperature of Copper in Ethanol Solution
- eliassiguenza
- · Replies 3 ·
Tricky(?) Centripetal Motion Problem
- realslow
- · Replies 19 ·
What is the average angular deceleration of the rear wheel?
- johnojohno
- · Replies 1 ·
Why does resonance peak amplitude decrease with resistance in parallel LCR?
- nathangrand
- · Replies 3 ·
Sliding bar constraint equations
- v0id19
- · Replies 6 ·
A Physics Kinematics Grade 11 question
- AudenCalbray
- · Replies 7 ·
How much light passes through a window?
- bobobano
- · Replies 6 ·
Car pulled over speed bump with cable at angle
- jorge0531
- · Replies 1 ·
Projectile Motion: Is Final Y Velocity Lower Than Initial? Impact on Time?
- Nerdyboy
- · Replies 1 ·
Ring moving along frictionless arc
- fyonatan
- · Replies 2 ·
What is the Tension in Each String for a Hanging Ball?
- dolerka
- · Replies 5 ·
Frictionless Ramp question, should be very simple
- Asphyxiated
- · Replies 19 ·
How does telephone signal transfer work?
- Jncik
- · Replies 2 ·
How is τmax/rmax related to the second moment of area?
- Riazy
- · Replies 1 ·
Equation for heating water with a nichrome coil
- kidsquad
- · Replies 1 ·
Flow of electricity and resistivity (ohms law)
- MitsuShai
- · Replies 4 ·
Flow of electricity: Open versus Closed Circuit
- MitsuShai
- · Replies 1 ·
Kirchoff's Laws to find all currents flowing in the cct
- boo_lufc
- · Replies 21 ·
Angular Velocity with Bike Tires
- Spartan301
- · Replies 2 ·
Actual vs percieved depth. optics question
- mogley76
- · Replies 1 ·
A Leaning Plank. Find where it looses contact.
- warjunkie
- · Replies 33 ·
Energy resultant of Solidification Point Of Ethanol
- eliassiguenza
- · Replies 1 ·
Angular momentum of comet in elliptical orbit at perihelion
- missnuss
- · Replies 3 ·
How Does Capacitance Change with Angle in Non-Parallel Plate Capacitors?
- Fusilli_Jerry89
- · Replies 2 ·
How Do You Calculate the Moment of Inertia for a Cubic Slab?
- jumbogala
- · Replies 4 ·
Resonance of a Parallel LCR network
- nathangrand
- · Replies 1 ·
Conservation of energy of spring
- etothey
- · Replies 5 ·
Calculating I for a Circular Hoop with Tangential Axis
- missnuss
- · Replies 1 ·
Chase problem involving acceleration and velocity
- patton_223
- · Replies 3 ·
Minimum force to raise barrel with pipe levers
- animedragon
- · Replies 1 ·
Electric Field and Forces Problem?
- AnnieF
- · Replies 2 ·
Blackhole spaghettification and maximum body tension
- Snazzy
- · Replies 2 ·
In a certain region, the earth's magnetic field has a magnitude
- cclement524
- · Replies 1 ·
Electrostactics- honors physics problem
- Creative-Amy
- · Replies 2 ·
Circular Motion astronaut training
- ThomasMagnus
- · Replies 1 ·
Time to complete circuit on dome at maximum speed
- ova5676
- · Replies 24 ·
Basic problem on the equation of motion
- Frisky90
- · Replies 5 ·
What Are the Quantum Limits of Cooling Sodium Atoms in an Atom Trap?
- natalie.*
- · Replies 1 ·
Maximum acceleration using energy principle
- shehan1
- · Replies 1 ·
Inclined Plane Pulley System: Finding Tensions
- sodium40mg
- · Replies 17 ·
How Does Particle Velocity Change in Different Reference Frames?
- CINA
- · Replies 1 ·
Find Out How to Determine Accuracy of Line of Best Fit
- gii
- · Replies 2 ·
Can You Protect an Egg from a 40 ft Drop Using Only Straws and Rubber Bands?
- Condensate
- · Replies 2 ·
Which line is stonger? orange, green or blue?
- Brown Arrow
- · Replies 8 ·
Which bead arrives first at the finish: A or B on a curved wire?
- zosterae
- · Replies 1 ·
Calculate Resonance Wavelength?
- drc754
- · Replies 2 ·
Find Electric Field vector from Equapotential lines
- [V]
- · Replies 7 ·
How Do You Determine the Exact Phase Difference in Single Slit Diffraction?
- jegues
- · Replies 7 ·
Rotation - Collision of Rotating Cylinders Cylinders
- cupid.callin
- · Replies 5 ·
Acceleration of a Particle in Frames S1 and S2
- phymatter
- · Replies 3 ·
Is the Time of Orbit for a Satellite Above Mars Really 800 Million Years?
- Xanthippus
- · Replies 3 ·
Calculating Wavelength for Diffraction Grating Problem
- kraphysics
- · Replies 1 ·
How can I solve the Thoroid circuit problem?
- Tusike
- · Replies 11 ·
Very Very Basic Numeracy Question - I'm Having a Dumb Moment?
- Physics Enemy
- · Replies 6 ·
Rotation - Angular acceleration
- cupid.callin
- · Replies 4 ·
Hanging Mass - Answer says that I am wrong
- Sabellic
- · Replies 5 ·
Block rising between two downward-moving wires at angle α
- phymatter
- · Replies 4 ·
Right hand rule finding direction of magnetic force
- JosephK
- · Replies 10 ·
Why is calculated resistance 11 times less than the component value in LC circuit?
- shakaflaka
- · Replies 1 ·
AC Circuits / Alternating Current
- woodentsick
- · Replies 3 ·
How Do You Calculate Final Velocity in a Two-Car Collision Scenario?
- D-X69
- · Replies 1 ·
Calculate total energy expended in the acceleration
- JavaJoeUK2011
- · Replies 9 ·
Accuracy and percentage uncertainty
- koat
- · Replies 5 ·
Wondering about the signs or coordinate system for forces?
- page123
- · Replies 4 ·
What are the unknowns in this nuclear reaction sequence?
- AStaunton
- · Replies 2 ·
Newton's Second Law: Combined Masses
- Peter G.
- · Replies 2 ·
Net gravitational force from sun and moon on Earth at different moon phases
- eclecticmanic
- · Replies 4 ·
Finding Angular Displacement in a Pirouette
- Spartan301
- · Replies 2 ·
Finding Brewster's Law - Relation between Io and Refractive Index n
- llewyn
- · Replies 1 ·
Car crash stimulus calculations
- omgplshelpme
- · Replies 3 ·
Acceleration from min/max derivatives
- Turtlie
- · Replies 4 ·
Projectile Motion - formula derivation
- arpita45
- · Replies 3 ·
Show that 1/2mv^2 = 3/2kT for a star cluster
- warfreak131
- · Replies 6 ·
Power needed to maintain speed against resistance in a coasting car
- melito
- · Replies 1 ·
Find coefficient of kinetic friction for mass on ramp and level surface
- alfredo24pr
- · Replies 12 ·
How Does Transcranial Magnetic Stimulation Induce EMF in Brain Tissue?
- imapeiceofwod
- · Replies 5 ·
Uniform Circular Motion in a Horizontal Plane
- carouselifica
- · Replies 4 ·
Constant acceleration with initial backward velocity
- jazzguitarist
- · Replies 1 ·
Compton Effect conceptual problem
- kraphysics
- · Replies 3 ·
Bernoulli's Principle: Venturi Pipe
- sirclash
- · Replies 2 ·
Calculating Magnetic Force on a Moving Charge near an Infinite Straight Wire
- eestep
- · Replies 2 ·
Atwoods machine and angular momentum
- demonelite123
- · Replies 5 ·
Simple Resistance-Temp relationship
- PennStateFan1
- · Replies 6 ·
Charge density of a infinite straight wire
- caheobong
- · Replies 3 ·
Minimum angle to hit a target 0.8m high at unknown distance
- zebra1707
- · Replies 1 ·
What Incline Is Needed for a Toboggan to Slide Downhill?
- kamalpreet122
- · Replies 4 ·
How Do Kinematics and Impulse Principles Apply in a Two-Particle Pulley System?
- songoku
- · Replies 3 ·
What is wrong with my solution?
- promise89
- · Replies 6 ·
Understanding Shear and Bending Moments in Beam Analysis
- jofree87
- · Replies 1 ·
Rotation problems: pure rotation, angular velocity, torque, and rolling
- cupid.callin
- · Replies 2 ·
Calculate Magnetic Field Strength for Deflecting Electron in CRT?
- m84uily
- · Replies 1 ·
Circular Motion, only radius known
- zz227
- · Replies 2 ·
Find moment of Inertia from Force, radius and acceleration
- iva
- · Replies 3 ·
Statics question: when do I need to find the support reactions?
- denting
- · Replies 3 ·
Current in a Network of Resistors
- cbb12
- · Replies 2 ·
Two connected masses on separate inclines
- alex12342011
- · Replies 20 ·
Why does the impulse equal 2.8 when a moving tennis ball is hit back?
- ProPM
- · Replies 2 ·
Physics Test Question, Electromagnetism (induced charges) (grade 12)
- baller2353
- · Replies 3 ·
Two ramps, one friction, one frictionless
- page123
- · Replies 17 ·