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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Power delivered to a lightbulb during startup vs steady state
- billiam
- · Replies 4 ·
Should I round on each step when solving a physics problem?
- G-Man
- · Replies 7 ·
Vectors, New Student, probably very basic
- stevie
- · Replies 6 ·
Final pressure and mass of ethane in a flask heated then cooled
- ovoleg
- · Replies 5 ·
Calculate Loss of Energy from Bouncy Ball Lab
- reliquator
- · Replies 14 ·
Electric potential and free fall acceleration problem
- Punchlinegirl
- · Replies 4 ·
How Long Does It Take for a Pulse to Travel Across a Stretched Cord?
- thschica
- · Replies 1 ·
Calculating Muzzle Speed with Embedded Bullet and Friction
- chris568
- · Replies 2 ·
Solving Electrical Energy Dissipated in Wire Circuit
- tj03
- · Replies 2 ·
How Do You Calculate the Change in Magnetic Field in a Coil?
- tj03
- · Replies 1 ·
Speed and centripetal acceleration of a rock in a rotating tire
- Jacob87411
- · Replies 1 ·
Projectile Motion of Football: Solving for Time with Given Initial Conditions
- RedBurns
- · Replies 2 ·
Estimating the sun's diameter with a meter stick and the Earth's radius from sunset timing
- Indigo Prophercy
- · Replies 1 ·
How Does This Energy Conservation System Work?
- DeathKnight
- · Replies 3 ·
The Physics Behind Fanning The Flames ?
- Erwin Schrodinger
- · Replies 1 ·
Why does the back emf effect increase with frequency?
- Just some guy
- · Replies 20 ·
Particle Kinetic energy problem
- Punchlinegirl
- · Replies 4 ·
What is the magnitude of the x-component of the electric field at point P?
- Punchlinegirl
- · Replies 1 ·
How Do Bolts Handle Engine Weight and Turbulence in Flight?
- mb85
- · Replies 1 ·
De Broglie wave direction and computing F/G from partial derivatives
- UrbanXrisis
- · Replies 4 ·
Can You Calculate Tension and Earth's Angular Attributes?
- iloveuok
- · Replies 1 ·
Calculating Forces on a Skier Pulled Up a Slope
- mb85
- · Replies 2 ·
Friction force on a decelerating skater
- Moomba44
- · Replies 2 ·
How Can the Area Under a Velocity-Time Graph Determine Displacement?
- telko
- · Replies 3 ·
Solving 2D Collision Problem with Equal Masses and Elastic Collision
- thecluelessphysisist
- · Replies 2 ·
Couple questions on work and conservation of energy
- brop52
- · Replies 2 ·
A very tricky problem that im just not getting
- ajc9387
- · Replies 2 ·
Kinetic-Molecular Model of Ideal Gas: vrms/vav
- verd
- · Replies 4 ·
How Do Energy Principles Explain Space Capsule Re-Entry and Hull Temperature?
- amyheartgrl
- · Replies 2 ·
Focus Axial Ray: Can It Pass Through Glass?
- UrbanXrisis
- · Replies 1 ·
Which soup can would hit the bottom of an inclined plane first?
- cherica48
- · Replies 1 ·
When does the green van overtake the red car?
- Hollysmoke
- · Replies 6 ·
Springs, Restoring Force, and Hooke's Law
- xxdrossxx
- · Replies 2 ·
When to Use Kg vs G in Physics Problems?
- pureouchies4717
- · Replies 2 ·
Is the Graph of Period vs. Radius in Circular Motion a Straight Line or a Curve?
- JohnSimpson
- · Replies 5 ·
How can we calculate the centre of mass using integrals?
- T7
- · Replies 10 ·
What Was Johnny's Initial Speed Sliding Down the Slope?
- pureouchies4717
- · Replies 2 ·
Simple Projectile Motion of ball
- RedBurns
- · Replies 2 ·
Work Done on Sled by Rope in 15s: kJ Answer
- natedebar72
- · Replies 1 ·
Voltage Required for 10A Through 6 Ohm Light Bulb
- jimmy_neutron
- · Replies 1 ·
Electric potential at midpoint of isosceles triangle base with three charges
- Punchlinegirl
- · Replies 2 ·
How Is Energy Calculated for a Temperature Increase in Neon Gas?
- truckerron1
- · Replies 1 ·
Thermodynamics I have been working on this for 3 hours
- ovoleg
- · Replies 2 ·
How Do You Calculate Tensions T1 and T2 in a Two-Cable System?
- Demianu27
- · Replies 4 ·
Current drawn from car battery to heat up water
- confusedbyphysics
- · Replies 1 ·
How Does Mud Impact the Angular Velocity of a Pivoted Meter Rule?
- Harmony
- · Replies 1 ·
Mechanical Energy in a Closed System
- Sisyphus
- · Replies 2 ·
Finding pendulum length and speed at the bottom given period and angle
- yosup231
- · Replies 6 ·
Tension question (this should be basic)
- pureouchies4717
- · Replies 8 ·
Calculating Tangential Acceleration of an Astronaut in a Centrifuge
- pureouchies4717
- · Replies 3 ·
Time to boil 19L of wort with a 1500W heating element
- BrewMasterJim
- · Replies 13 ·
Finding Normal Modes in Coupled Oscillations
- blackbody
- · Replies 3 ·
Centripetal Motion: Resolving Mistake with Diameter
- pureouchies4717
- · Replies 1 ·
Does Glass Thickness Affect Light Focus and Virtual Image?
- UrbanXrisis
- · Replies 2 ·
Collision Problem, not even sure where to start.
- Moomba44
- · Replies 8 ·
Finding wind speed from airspeed and ground speed vectors
- Hollysmoke
- · Replies 4 ·
Can unequal forces satisfy Newton's third law, and does net force determine damage?
- something_about
- · Replies 11 ·
Pedestrian chasing bus with uniform acceleration
- forevergone
- · Replies 6 ·
Force on a dipole from a point charge and dipole-dipole interactions
- Lisa...
- · Replies 3 ·
How Does a Bullet's Kinetic Energy Transform When It Passes Through a Tree?
- jai6638
- · Replies 2 ·
Basic arrow projectile motion problem
- pureouchies4717
- · Replies 7 ·
How Does an Electromagnetic Bell Work?
- blackicerose
- · Replies 4 ·
Helicopter rescue: child's speed when rope snaps and fall begins
- Hadjiev
- · Replies 2 ·
How can I accurately time a circuit without a stopwatch?
- I_love_Physics
- · Replies 3 ·
Average Velocity Question: Solving for Average Velocity in Complicated Motion
- mcolem
- · Replies 7 ·
Why do oscillations deviate from T² ∝ l³ at longest beam lengths?
- lozzyjay
- · Replies 3 ·
When and Where Will Two Stones Meet: A Motion Word Problem Analysis
- forevergone
- · Replies 7 ·
Uniform circular motion; radial and lateral components?
- Signifier
- · Replies 3 ·
Projectiles - how high is the ball
- Huskies213
- · Replies 1 ·
How can Faraday's Law be used to calculate induced voltage in a coil?
- kahless2005
- · Replies 2 ·
What Are the Differences Between Gun Propellant and High Explosives?
- lemd
- · Replies 3 ·
Solving Coulomb's Law Problems with Equilateral Triangles
- heelp
- · Replies 3 ·
Calculating Nuclear Density of Oxygen Element
- kidia
- · Replies 6 ·
Can friction cause torque?
- killerdoxie
- · Replies 6 ·
How much energy would neon gas absorb to increase the temperature
- truckerron1
- · Replies 1 ·
Calculate wavelength to frequency
- dervast
- · Replies 4 ·
(2) Pulley Problems (Acceleration)
- stopyoukid
- · Replies 5 ·
Ridiculously complex mechanics problem
- DaMastaofFisix
- · Replies 4 ·
Electric Potential: Finding Points of Zero Potential Along X Axis
- brad sue
- · Replies 2 ·
Finding velocity after falling from maximum height in vertical launch
- rea
- · Replies 3 ·
Simple Potential Difference Question
- stallion
- · Replies 2 ·
Moment of inertia of disk with four holes using parallel axis theorem
- DaMastaofFisix
- · Replies 8 ·
Calculate the total distance traversed by the car
- angina1
- · Replies 10 ·
Model that demonstrates conservation of mechanical energy
- furia
- · Replies 5 ·
Why is friction essential for jumping from a platform?
- vaishakh
- · Replies 8 ·
Where to find explanations of physics principles and when to apply them
- Adamantus
- · Replies 4 ·
What is 0.5 times 234.987 - Significant Figures?
- Indigo Prophercy
- · Replies 2 ·
Frame of Reference vs. Coordinate System
- 'AQF
- · Replies 2 ·
Algebra of two equal positive charges
- Lisa...
- · Replies 1 ·
Unit Vector to Verbal Representation
- eggsandbakey
- · Replies 3 ·
Calculating Volume Charge Density in a Sphere of Charge
- psingh
- · Replies 1 ·
Max Height for Pole-Vaulter with Speed 6.00 m/s
- iceT
- · Replies 1 ·
Total electric potential of systems of point charges
- Atomos
- · Replies 1 ·
Do I need to use trig and is the 10 centimeters an angle
- Ilovmyjeep
- · Replies 2 ·
How to Calculate a Car's Speed from Skid Marks on Wet Pavement
- Moe_slow
- · Replies 7 ·
Solving Spherical Insulator Problem: Tension & Angle
- BoogieL80
- · Replies 2 ·
Calculating Original Vectors: Solving for Net Force"
- JEscribir
- · Replies 2 ·
Finding magnitude of a-b and height of ball after 1.4 seconds
- Huskies213
- · Replies 1 ·
Solve Distance: Baseball Player Sliding w/ 7.9 m/s & 0.41 Coefficient
- Huskies213
- · Replies 6 ·