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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Normal mode of string in third harmonic
- jimbo71
- · Replies 1 ·
How Do You Derive Temperature Conversion Formulas?
- briteliner
- · Replies 1 ·
Equilibrium Forces on an Aerialist Walking a Tightrope
- jonnyboy
- · Replies 3 ·
VHF antenna experiment: polarization and field strength at 144 MHz
- prime-factor
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Determining coefficients of friction of paper
- Omega234
- · Replies 11 ·
Why Are Carnot Engines Not Built in Real Life?
- xinlan
- · Replies 9 ·
Entropy of Ice-Water: Solving the Puzzle
- anubis01
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Average force in totally inelastic collision
- uk9999
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Average Velocity between time to time
- Triple88a
- · Replies 11 ·
Solve Mechanics Problem: Man in Ditch, Force on Man at Depth h
- quantum brain
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Vector Problem - Angle between two vectors
- jaredm2012
- · Replies 1 ·
Easy problem, but no idea how to solve it?
- Gramsci
- · Replies 1 ·
Thermal Equilibrium: Calculating Pressure of Helium Gas in 3.11L Container
- Indy2424
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Hydrostatics/Equilibrium: An object hanging by a light cord in a bucket of water
- LunarJK
- · Replies 1 ·
How deep is the lake? velocity physics
- hachi_roku
- · Replies 1 ·
Calculating Electric Field Strength in a Thunderstorm
- itryphysics
- · Replies 22 ·
Bullet and Block Circular Problem
- matt-83
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Finding the position of an electric field.
- jonyamikun
- · Replies 6 ·
Stars and electromagnetic waves/radiation
- prime-factor
- · Replies 2 ·
Projectile motion at top of cliff with angle
- aemaem0116
- · Replies 1 ·
Finding uncertainty in cookie volume and diameter-to-thickness ratio
- nut.the.dutch
- · Replies 12 ·
How Do You Calculate the Weight of Signal C in a Suspended Cable System?
- jonnyboy
- · Replies 1 ·
The cross product and dot product of vectors
- Xiience
- · Replies 9 ·
Which swings faster: weight at the end or near the base of a pendulum?
- Engelwood
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Oscillator with equal amounts of kinetic and potential energy
- Dwrigh08
- · Replies 3 ·
Is the Answer in Meters per Second or Millimeters per Second?
- dcramps
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What Is the Correct Magnitude of F2?
- g.uricchio
- · Replies 1 ·
Calculating Battery Internal Resistance: V=IR Method
- accol
- · Replies 1 ·
Moving car hits a stationary car
- physicsman2
- · Replies 2 ·
Physics kinematics question (constant acceleration)
- TheDog
- · Replies 3 ·
Is the Electric Field Calculation for a Rectangle of Charges Correct?
- itryphysics
- · Replies 4 ·
The Doppler Effect and Simple Harmonic Motion question
- hey3796
- · Replies 2 ·
What are the pressure and volume components of enthalpy?
- syang9
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Displacement of Thrown Ball: Solve in 15min
- Derby4Life
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Finding ring positions and heights for ball trajectory at 55 degrees
- username111
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Solving Algebraically for T2: Q Lost = Q Gained
- Soliloquy12
- · Replies 4 ·
Finding current through resistor branch in two-switch circuit
- livewire1717
- · Replies 1 ·
Finding the Net Force Exerted by Water (of certain depth) on A Dam
- Beginner@Phys
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Finding tension in the fourth strand of a spider web
- phy_
- · Replies 5 ·
Calculating Forces on a Uniform Platform in Equilibrium: Physics Problem
- key
- · Replies 4 ·
Fluid Dynamics: Using Bernoulli's equation and Volume Flow Rate
- Beginner@Phys
- · Replies 2 ·
Kinematic Problem: Tangential Acceleration and Radius of Curvature at t=1
- Dell
- · Replies 1 ·
What is the average time between collisions for conduction electrons in copper?
- jromega3
- · Replies 2 ·
Bullet penetrating a wooden block: acceleration, force, time, impulse
- acsin92
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Finding charges on an equilibrium position
- -EquinoX-
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Does Electric Field Depend Solely on Internal Charges?
- musicfairy
- · Replies 1 ·
Where Is the Net Electric Field Zero Between Two Fixed Charges?
- AFRaven
- · Replies 1 ·
Rolling wheel without slipping: is v = rω when it stops spinning?
- key
- · Replies 1 ·
Where is the electric field zero between two negative charges on the y-axis?
- itryphysics
- · Replies 13 ·
Diver leaving a 3.05 m board with 8.51 m/s at water impact
- DeltaIceman
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Free Body Diagram: True or False?
- FAJISTE
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What are the dimensiosn of tank in meters
- Makaroon
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Adding capacitance to an impedance
- bengaltiger14
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Pressure inside a tank of heavy water
- M4573R
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Calculating final speed using momentum
- ilovedeathcab
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Electric field and electric force
- -EquinoX-
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Where the electric field is zero
- JJones_86
- · Replies 3 ·
What is the Electric Field at Point P in the Presence of Two Charges?
- JJones_86
- · Replies 3 ·
Understanding Planetary Motion: Correcting a Common Misconception
- mormreed
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Do Nodes in Open Tubes and Anti Nodes in Strings Denote Harmonics?
- kyleul
- · Replies 1 ·
How to Calculate Flux Density at a Point Using a 3-A Current?
- LandonV
- · Replies 1 ·
Electron Motion Near Nucleus: Calculating Period and Velocity
- blueskadoo42
- · Replies 2 ·
Why is the linear speed at point M used in calculating EMF in a magnetic field?
- nokia8650
- · Replies 3 ·
Can a Car Safely Turn on a 40-Degree Banked Road at 30 m/s?
- dk2421
- · Replies 1 ·
Calculating Electric Potential at Sphere and Shell
- jromega3
- · Replies 1 ·
Calculating Distance fluid will travel in small tube with Piston on other side
- SodaBiscuit
- · Replies 4 ·
How Does Heat Addition Change the Temperature of an Ideal Gas?
- keemosabi
- · Replies 3 ·
Net force exerted on the two-particle system
- Demix500
- · Replies 5 ·
Simple harmonic motion of sliding dinner plate
- jimbo71
- · Replies 1 ·
Motion of a system of particles
- physics_geek
- · Replies 13 ·
Energy stored in a capacitor graph
- nokia8650
- · Replies 4 ·
Calculating Electric Field at (2.00,0)
- -EquinoX-
- · Replies 6 ·
Copper and iron wire resistivity problems
- emjez15
- · Replies 1 ·
Finding the height of a building
- moy13
- · Replies 6 ·
Pressure in a two-layer reservoir with water and sludge
- tophat22
- · Replies 7 ·
Diffraction Grating: Finding Wavelength with Given Angle and Slit Density
- seanmcgowan
- · Replies 2 ·
Ap answer? for gravity question
- vectordog
- · Replies 2 ·
How Long Does It Take a Pulse to Travel Across a Ravine When a Rope is Plucked?
- dsptl
- · Replies 6 ·
Nearest Distance between 2 boats
- zimbabwe
- · Replies 3 ·
How Do You Calculate Cable Tension for Static Equilibrium?
- chrozer
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Finding the angle of a vector from its components
- Bottomsouth
- · Replies 1 ·
What is the Correct Theta Angle for Vector Degrees Problem?
- Bottomsouth
- · Replies 7 ·
Finding final net charge after electrons are transferred to an object
- Sinusoidal
- · Replies 3 ·
How Much Force Is Exerted on a Bullet When Fired from a Gun?
- bob24
- · Replies 3 ·
Motion in One Dimension - Finding two separate changes in time
- jaredm2012
- · Replies 4 ·
Solving Friction Problem: Accelerating Wounded Soldier Out of Line of Fire
- bob24
- · Replies 4 ·
Electric Force Calc: 4µC, -3µC, 4µC at 10cm, 4cm,-2cm
- redhot209
- · Replies 1 ·
Height of a rocket at a certain time
- moy13
- · Replies 2 ·
Finding vector components and magnitude from sum of two vectors
- FAJISTE
- · Replies 2 ·
Two wavelengths, find time between successive beats
- phys62
- · Replies 2 ·
Predicting bulb brightness in parallel and series circuits
- theneedtoknow
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Which operations are physically meaningful with dimensionally different quantities?
- FAJISTE
- · Replies 3 ·
Uniform electric field in a triangular arrangement
- larkinfan11
- · Replies 4 ·
Charge flow of grounded sphere?
- yeahhyeahyeah
- · Replies 2 ·
Impulse required to accelerate a proton from 0.995c to 0.998c
- magma_saber
- · Replies 2 ·
Calculating effects of air resistance on a falling mass
- Steph191290
- · Replies 2 ·
Finding propeller thrust for helicopter lifting off at 10 ft/s²
- bob24
- · Replies 3 ·
Doppler effect measure speed in blood cells
- hellokitty
- · Replies 2 ·
Free-fall acceleration and escape speed on Uranus
- cougarsoccer
- · Replies 5 ·
Calculating e/m Ratio: A Puzzling Problem
- barcelonaboy
- · Replies 2 ·