Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Standard Deviation or Resolution Error: Which One Should Be Quoted in a Report?
- Max Eilerson
- · Replies 1 ·
How Do You Calculate the Mass of a Single Screw from Multiple Cup Weights?
- Engage
- · Replies 6 ·
Calculating Tension in Wires Supporting a Lithograph
- mikefitz
- · Replies 2 ·
Energy conservation of a child on a swing
- mikefitz
- · Replies 1 ·
Wave interference of loudspeakers
- dtesselstrom
- · Replies 3 ·
What is the Total Force Exerted on a Section of a Wave-Carrying Rope?
- Ridonkulus
- · Replies 6 ·
Distance traveled by a point on a rotating disk's edge
- the_dialogue
- · Replies 2 ·
Ideal Spring and bullet Problem
- Ertosthnes
- · Replies 3 ·
Some Astronomy/Cosmology Questions
- stardrop
- · Replies 6 ·
Spring Stretch in Car Towing: How Far Does the Spring Extend?
- zachattackback
- · Replies 2 ·
How Does Acceleration Impact Stress and Extension in a Steel Rope?
- sirhubert
- · Replies 9 ·
Finding Velocity of a dropped ball
- cowmoo32
- · Replies 11 ·
Finding the push angle when moving a chair with friction
- Stingarov
- · Replies 16 ·
Air resistance in conical pendulum lab experiment
- mindboggling
- · Replies 3 ·
Collision of subatomic particles
- fffff
- · Replies 1 ·
Block Sliding on Sphere: Finding Critical Speed
- Canadian
- · Replies 7 ·
Maximum Safe Depth Calculation for a Submarine with a Thick Window
- k3N70n
- · Replies 5 ·
Solve Simple Motion Prob: Inst. Speed of Bicycle 5m
- student12phys
- · Replies 1 ·
Simple Harmonic Motion of mechanical bull
- factor
- · Replies 4 ·
How Do Astronauts Measure Mass and Speed Using a Spring in Space?
- bobbarkernar
- · Replies 4 ·
What direction does a tricycle initially move when pulling a rope to the left?
- donald1403
- · Replies 2 ·
Finding potential energy from force using F = −∇V
- thenewbosco
- · Replies 1 ·
Solving Charged Particles: Mass & Charge
- Forceflow
- · Replies 7 ·
How Do Photon Energies Vary in Relativistic Particle Decay?
- phalanx123
- · Replies 3 ·
What Is the Maximum Efficiency of a Heat Engine Using Lake Water Temperatures?
- mikefitz
- · Replies 3 ·
Finding glass volume expansion coefficient from mercury overflow
- tanky322
- · Replies 2 ·
Simple harmonic motion rope swing problem
- Ertosthnes
- · Replies 4 ·
PERES LAWHow does Ampere's Law relate to electromagnetism?
- mikefitz
- · Replies 3 ·
Find Frequency of Notes Played on a Bugle
- mrjoe2
- · Replies 4 ·
Finding acceleration from velocity and time data
- mindgame
- · Replies 6 ·
Calculating Electrostatic Force and Charge Imbalance in Tiny Water Drops
- Forceflow
- · Replies 2 ·
Deriving Moment of Inertia for a Uniform Rod Rotating about a Non-Center Axis
- turdferguson
- · Replies 2 ·
How Do I Solve Problems on Rotational Kinetic Energy and Center of Mass?
- ic3man
- · Replies 1 ·
What is the specific heat of the metal?
- hatingphysics
- · Replies 2 ·
How Do Wavelength Differences and Temperature Affect Wave Properties?
- vebbie
- · Replies 1 ·
Calculating Force Exerted by Photons on a Small Space Vehicle
- Amith2006
- · Replies 3 ·
Minimum Collision Speed for Excitation of Hydrogen Atoms
- cocomisk
- · Replies 5 ·
Newbie Seeking Answers on Physics of R/C Cars
- GuruGhulab
- · Replies 4 ·
Spring compression and force when upper block starts to slip
- zachattackback
- · Replies 7 ·
Cylindrical hoop rolling down rough slope then up smooth slope
- phalanx123
- · Replies 3 ·
How Does Initial Velocity Affect Ball Speed at Landing?
- pack60
- · Replies 9 ·
Ball suspended by string with horizontal force equal to its weight
- robgazza
- · Replies 2 ·
Not sure about my solution (fictionless Pulley)
- phalanx123
- · Replies 2 ·
How Do You Calculate Velocities from a Potential-Energy Diagram?
- fsm
- · Replies 5 ·
How Much Energy Would a Meteorite Impact Release Compared to an Atomic Bomb?
- Kildars
- · Replies 9 ·
How Do Astronauts Measure Their Mass in Space?
- bobbarkernar
- · Replies 4 ·
Conditions necessary for emission of EMR
- desormais
- · Replies 2 ·
Show that any central force is a conservative force
- ch00se
- · Replies 11 ·
Calculating Forces on a Lunch Tray
- gamesandmore
- · Replies 13 ·
What is the Total Work Against Gravity for a Laborer Carrying Sacks of Rice?
- playlistism
- · Replies 4 ·
When does a bead lose contact with an oscillating block and spring?
- turdferguson
- · Replies 3 ·
Possible lengths of closed tube that resonates with 85cm guitar string
- Arbitrary
- · Replies 1 ·
PV diagram of a monatomic ideal gas
- mikefitz
- · Replies 1 ·
Moment of inertia of two masses on opposite ends of a rod
- Igottabull
- · Replies 3 ·
What is the effect of adding weight to a balanced beam?
- cookie monsta
- · Replies 1 ·
Why Do I Struggle with Solving Physics Problems?
- PhyzicsOfHockey
- · Replies 15 ·
Medieval prince throws rock from castle wall at 42 degrees
- humaders99
- · Replies 11 ·
Thermodynamic Equilibrium and Pressure Questions
- chrispsu
- · Replies 13 ·
Can Physics Confirm the Height of a Carnival Ride Start?
- PascalPanther
- · Replies 6 ·
Centripetal acceleration at tire top and bottom in rolling motion
- mbrmbrg
- · Replies 2 ·
What Determines the Energy Release in Nuclear and Chemical Reactions?
- Scottlow
- · Replies 1 ·
Rotational Equilibrium and Dynamics Problem
- sphoenixee
- · Replies 7 ·
Frictional losses: Why does frictional torque depend on ω?
- Doom of Doom
- · Replies 3 ·
Calculating Tensions in a Vertical Circular Motion Problem
- cy19861126
- · Replies 3 ·
Why Does Moving the Microscope Objective Create a Second Image?
- Numen
- · Replies 1 ·
Tension and acceleration comprehension
- seanhead42
- · Replies 2 ·
What do soundwaves look like for poor vs rich quality audio?
- jnimagine
- · Replies 8 ·
Changes based on electromagnetic principals
- physicsgal
- · Replies 7 ·
Light pulse traveling on a rocket at 2/3 c
- phalanx123
- · Replies 6 ·
What is the Maximum Height for Sliding Off a Semi-Circle?
- Noobcake
- · Replies 4 ·
Why did particle accelerator advances enable discovery of elementary particles?
- quickslant
- · Replies 4 ·
Finding the maximum density of a balloon
- penzoate
- · Replies 1 ·
Energy Level question (quantam physics)
- quickslant
- · Replies 3 ·
"Proving Central Force is a Conservative Force
- m2287
- · Replies 7 ·
Turntable, block, and rotation angular velocity
- abeltyukov
- · Replies 2 ·
What is the actual diameter of the red blood cell?
- smity711
- · Replies 7 ·
Double slit experiment and white light
- Amith2006
- · Replies 6 ·
Finding temperature T when heat flows between three reservoirs with a Carnot engine
- tigerguy
- · Replies 2 ·
Linear and Angular Velocities of a Point on a Rotating Bicycle Wheel
- p0ke
- · Replies 3 ·
How Do You Calculate the Actual Diameter of a Red Blood Cell Using a Microscope?
- katierob
- · Replies 3 ·
Projectile fired down incline: angle maximizing range
- trajectory28
- · Replies 2 ·
Find the Diameter of an Iron Disk for Kinetic Energy Storage of 14.6
- chrismcr
- · Replies 3 ·
How Is Tension Calculated in a Harpsichord String?
- kbyws37
- · Replies 3 ·
Effects of pressure on an air bubble
- studentmom
- · Replies 1 ·
How to Calculate Tension in a Hanging Block Supported by a Rubber Cord
- feelau
- · Replies 2 ·
Tension in rope for stuntman swinging in vertical circle
- physics_ash82
- · Replies 5 ·
How Does Heat Release Affect Water Temperature in Thermochemical Reactions?
- Signifier
- · Replies 1 ·
Finding resistance/Power Consumption
- glasgowm
- · Replies 1 ·
Calculating Hip Joint Force/Stress During Walking/Running
- Michaelcarson11
- · Replies 3 ·
Calculating Orbital Distance in Earth's Gravitational Field
- quickslant
- · Replies 6 ·
Can someone Check this (Energy Question)
- quickslant
- · Replies 6 ·
Where does the gravitational potential energy go in a stretching wire?
- Iamtoast
- · Replies 10 ·
Drawing free body diagrams for pendulum
- vu10758
- · Replies 3 ·
How to Calculate Mass of Aluminum Needed to Melt 20 g of Ice with Heat of Fusion
- dmolson
- · Replies 2 ·
Gases & Pressure: Solving Homework Equations
- parwana
- · Replies 19 ·
Spring Questions about ball launcher
- dustpal
- · Replies 5 ·
What Gauge Pressure is Needed for a Water Jet to Reach 29.8 m/s?
- RED20
- · Replies 1 ·
Chair leg pressure problem geez
- caseys
- · Replies 2 ·
Two dimensional motion problem.
- TheSilence
- · Replies 4 ·
What Is the Phase Difference at the Tuning Fork in a Hallway Sound Experiment?
- lizzyb
- · Replies 4 ·