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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Voltage/current in circuit with two temperature sensors
- Mårten
- · Replies 15 ·
Calculating earth's speed using radius and speed of light, etc.
- DDRchick
- · Replies 8 ·
Point charges arranged as a trianngle
- jenzao
- · Replies 1 ·
Temperature and Kinetic Energy question
- 9giddjl
- · Replies 2 ·
Distance between lense and film to get a focused picture
- phy112
- · Replies 1 ·
Measuring power output of solar cells and panels
- jonnyrocks
- · Replies 3 ·
Question on heat transfer of a plane wall
- sero2000
- · Replies 1 ·
What Is the Pressure on an Object 10m Below Sea Level?
- laura297
- · Replies 2 ·
Easy Acceleration / Friction question
- dglenn9000
- · Replies 6 ·
How Do You Calculate Rotational Inertia for a Solid Block?
- seraphimhouse
- · Replies 1 ·
How to Calculate Initial Radioactive Activity for Patient Treatment?
- soul5
- · Replies 1 ·
Why Does the Tension in the Lower Rope Not Depend on Mass M1?
- tizzful
- · Replies 5 ·
Maximum Height Reached by Block on Spring
- Ry122
- · Replies 4 ·
Heat Pump Q: Cost of Winter Heat w/ 75% CoP
- ewnair
- · Replies 4 ·
Evaporation from a swimming pool
- jabbie3
- · Replies 1 ·
How far has the spring been compressed?
- Ry122
- · Replies 1 ·
Depth of lake (Pressure/fluids)
- Elbobo
- · Replies 2 ·
Solving Billy and Speakers: 16m, 0.8m, 3000 Hz
- axgalloway
- · Replies 1 ·
What Is the Focal Length of Veronique's Glasses for Clear Vision?
- phy112
- · Replies 1 ·
What is her speed relative to the ice surface?
- Ry122
- · Replies 3 ·
Normal force between two boxes pushed horizontally
- Lee Colombo
- · Replies 3 ·
When and where do two thrown coconuts collide?
- 5.98e24
- · Replies 2 ·
Rotational Inertia of a Rigid Body with Joined Rods
- Shatzkinator
- · Replies 2 ·
Distance a spring has been compressed
- Joe_I_Am
- · Replies 1 ·
Angular and tangential motion of bugs on a spinning fan blade
- srjs8812
- · Replies 1 ·
Protons in a particle accelerator
- AliAliAli
- · Replies 1 ·
Final temperature of compressed air in engine cylinder
- wcbryant87
- · Replies 7 ·
What Is the Speed and Average Acceleration of the Minute Hand on a Clock?
- StupidGenius
- · Replies 5 ·
Calculating the Average Force of a Weather Balloon on an Airplane
- maylilla
- · Replies 2 ·
Rotational speed of a tire at 2500 rev/min with 40cm radius
- zombie4000
- · Replies 4 ·
Finding the charge on a capacitator
- Dell
- · Replies 4 ·
Change in potential and kinetic energy
- science_rules
- · Replies 2 ·
Energy dissipated by a resistor in an RC circuit
- ehilge
- · Replies 2 ·
Throwing a ball in zero gravity and force from a firehose
- XodoX
- · Replies 5 ·
Vacuum Chamber Suction Pressure: -100 Kpa or 0 Kpa?
- nastaynas
- · Replies 2 ·
Acceleration produced from dragging a box up a hill?
- FREEDOGGY
- · Replies 2 ·
Finding initial velocities in an inelastic collision between truck and car
- onecoolcat
- · Replies 1 ·
Projectile motion in a spring loaded gun
- Darknes51986
- · Replies 3 ·
Calculating Coefficient of Friction for a Skier on an Inclined Slope
- Alexi
- · Replies 10 ·
Dipole in an Uniform Electric Field concept?
- fallen186
- · Replies 3 ·
How Can We Calculate the Pressure Inside a Sphere With Varying Density Gas?
- 78141471
- · Replies 1 ·
Superposition of 3 forces on a point charge
- jenzao
- · Replies 2 ·
Equilibrium gel height when transferring between two closed tanks
- katchum
- · Replies 1 ·
Spring Passing Equilibrium Position
- TwinGemini14
- · Replies 5 ·
Question:Parallel capacitors and electric beams
- Joop!!
- · Replies 3 ·
Inclined accelerating pendulum question
- cloughenough
- · Replies 1 ·
How Much Ice Is Needed to Cool Water from 25°C to 10°C?
- Finland
- · Replies 3 ·
How Does m=2 Affect the Path Difference in Double-Slit Interference?
- lha08
- · Replies 1 ·
Period of Oscillation for a Standing Transverse Wave on a Flexible String
- collegegirl13
- · Replies 3 ·
Calculate the Effective Spring Constant using Coulomb's Law
- jamba88
- · Replies 1 ·
Why Do Incandescent Bulb Light Patterns Differ with Slit Experiments?
- Funktimus
- · Replies 5 ·
Calculating Post-Impact Velocity in a Golf Club-Ball Collision
- Ry122
- · Replies 5 ·
Isothermal Expansion: Work and Heat
- minidee
- · Replies 4 ·
Entropy of Macroscopic Collision
- begbeg42
- · Replies 6 ·
Convex Mirror Image Calculation
- roxxyroxx
- · Replies 2 ·
Parallel Lightbulbs- resistance total
- GDGirl
- · Replies 4 ·
Calculating Coefficient of Kinetic Friction from Given Forces
- Ry122
- · Replies 3 ·
Work and electric potential in a field
- rrr3221
- · Replies 1 ·
What is the PHYSICS metric unit for the measurement of:?
- amandamolegir
- · Replies 2 ·
Determine the normal force on the track
- Ry122
- · Replies 5 ·
Second Law of Thermodynamics - heat pumps and air conditioners
- elcaptain
- · Replies 1 ·
Light & Optics Physics Contest: 2 Questions Need Help
- ballaholic8
- · Replies 1 ·
Potential difference to find the magnitude of the electric field strength
- dpogre
- · Replies 2 ·
How Does Compressibility Chart Predict Final Pressure in a Heated Rigid Vessel?
- MEAHH
- · Replies 1 ·
How Do Bats Hear High Frequencies?
- m.l.
- · Replies 1 ·
Inelastic collision, kinetic energy
- lemonpie
- · Replies 3 ·
Energy added to Ice- determine final temperature
- markdflip
- · Replies 4 ·
Motion in the field (electric, magnetic) questions
- 385sk117
- · Replies 7 ·
Solving Spring Homework: Angular Frequency & Amplitude
- XJellieBX
- · Replies 2 ·
Image Distance of a concave mirror ( with algebra)
- Cheezay
- · Replies 6 ·
Spring Compression from 8.0kg Mass Sliding 7.00m Down 51deg Incline
- Ry122
- · Replies 1 ·
How Is the Net Electric Field Calculated Between Two Negatively Charged Disks?
- StephenDoty
- · Replies 14 ·
How much work done by friction? (coefficient given)
- Lothar
- · Replies 4 ·
Proving a block completes a circular loop with energy conservation
- nrahim
- · Replies 2 ·
Ratio kinetic energy of alpha particle / kinetic energy of proton
- 385sk117
- · Replies 2 ·
Batter hits a ball momentum problem
- mandy34874
- · Replies 4 ·
Mass equivalent to one hydrogen atom?
- littlkj5
- · Replies 6 ·
How Do You Calculate the Period of a Spacecraft's Elliptical Orbit?
- KayleighK
- · Replies 1 ·
Nuclear Physics, photons, electrons and positrons
- aimslin22
- · Replies 2 ·
Nuclear Physics, portons and neutrons
- aimslin22
- · Replies 2 ·
Does amplitude affect the period of a mass on a spring?
- okgo
- · Replies 1 ·
Calculating Sound Intensity and Level of a Whisper
- xgoddess210
- · Replies 4 ·
What is the ball's maximum acceleration?
- lijoeman
- · Replies 2 ·
How to Calculate Orbital Period, Speed, and Minimum Energy for a Satellite?
- wowdusk
- · Replies 9 ·
Probability Density for Interferometer
- Einstein2nd
- · Replies 1 ·
What is the vertical force exerted by pier P on the left end of the bridge?
- vorcil
- · Replies 5 ·
Can someone explain the inclined plane picture to me?
- Lothar
- · Replies 19 ·
Circular motion normal force, elastic collision, and momentum conservation
- kiarrahannice
- · Replies 8 ·
Solve Gravitation Problem: Find Planet Radius from 11 kg Satellite Orbit
- ChazyChazLive
- · Replies 3 ·
What is the oscillation frequency?
- lijoeman
- · Replies 1 ·
Lagranguan / Coupled Oscillator
- Trenthan
- · Replies 1 ·
Inclined plane (ranking normal force)
- jtulloss
- · Replies 1 ·
Proton speed for same momentum as 6.0-MeV photon
- stayfocused
- · Replies 3 ·
How to draw a freebody diagram of a non ideal pulley
- Gorz
- · Replies 1 ·
De Broglie and other Quantum Questions
- DizzyDoo
- · Replies 1 ·
Force and pressure from raindrops hitting a skylight
- begbeg42
- · Replies 3 ·
Coursework - Determining Resistivity
- coolnufc
- · Replies 3 ·
Mechanics by Landau: Solving a Lagrangian Problem
- Advent
- · Replies 5 ·
Cylinder gas, pressure question
- yopy
- · Replies 14 ·