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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What Temperature is Needed for Hydrogen Gas to Produce a 656.2nm Emission Line?
- indie452
- · Replies 4 ·
Calculating Activity of Iodine 123 After 24 Days
- JDiorio
- · Replies 7 ·
Rotation of a magnetic computer disk
- ada15
- · Replies 8 ·
Finding constant angular acceleration from rotation and final velocity
- rambo5330
- · Replies 6 ·
Moment of I, Angular momentum, K
- joemama69
- · Replies 2 ·
How Does Friction Affect Particle Motion in Circular Dynamics?
- joemama69
- · Replies 3 ·
Moment of inertia and Kinetic Energy (Rotational Motion)
- miamirulz29
- · Replies 6 ·
What is the moment of inertia of Earth about its center?
- discordplus
- · Replies 2 ·
Bohr Model (Lyman,Balmer,Paschen series)
- Nope
- · Replies 3 ·
Time a spring takes to slow a mass
- LANS
- · Replies 3 ·
Little Milly/Willy/Time and Height
- rpullo
- · Replies 2 ·
Calculating Amplitude for a Spring Oscillation with Hooke's Law
- Dark Visitor
- · Replies 32 ·
Quantized Energy of Molecules: Minimum Energy to Break Apart
- clutch12
- · Replies 2 ·
Excited vs. Ground state masses of atom
- danok
- · Replies 1 ·
Solving Energy Q: Semi-Urgent Homework Statement
- tormaplea
- · Replies 16 ·
Using Simple Harmonic motion and conservation of motion to find maximum velocity
- Fromaginator
- · Replies 3 ·
Average power (counterweight, tension, motor)
- jamesweston0
- · Replies 2 ·
What Is the Beat Frequency Between Two Close Tuning Fork Frequencies?
- sonutulsiani
- · Replies 4 ·
Find Wavelength of Standing Wave in 200 cm String: Get Help Now
- Dark Visitor
- · Replies 10 ·
Standing waves - True or false?
- sonutulsiani
- · Replies 8 ·
Rearranging Formula: Step-by-Step Guide to Solve ax - b = cx + d
- Gringo123
- · Replies 3 ·
Designing a Stable Crane: Finding Reactions & Max Load
- dreistein
- · Replies 2 ·
Three light waves combine at a point find resultant amplitude and phase angle
- CianM
- · Replies 4 ·
Simple Problem about Air Pumped into a Balloon
- Brodo17
- · Replies 6 ·
Calculating Time and Velocity of Two Stones Dropped from a Cliff
- firebirds0707
- · Replies 2 ·
Electromagnetic Induction? HELP
- SAT2400
- · Replies 3 ·
Calculating Charge on Capacitor: 6.0 uF, 12V, and 100ohm Resistor
- SAT2400
- · Replies 3 ·
Flagpole problem concerning torque.
- M1ZeN
- · Replies 1 ·
Calculating Kinetic Energy and Speed with Rolling Hoop Problem
- jamesdubya
- · Replies 3 ·
How to Calculate Kinetic Energy and Velocity in Inelastic Collisions
- jamesdubya
- · Replies 18 ·
Ball goes down a frictionless ramp
- M1ZeN
- · Replies 5 ·
How Do You Calculate Simple Harmonic Motion Parameters for a Spring System?
- jamesdubya
- · Replies 1 ·
Charge is the same if C1 and C2 are in series?help
- SAT2400
- · Replies 1 ·
What is the Energy Calculation for a Bolt of Lightning?
- SAT2400
- · Replies 13 ·
Finding the voltage using J and F? help T_T
- SAT2400
- · Replies 1 ·
Bernoulli's Equation & Fluid Dynamics LAB
- Danneskjöld
- · Replies 1 ·
How Do You Calculate Capacitance with a Dielectric Material?
- SAT2400
- · Replies 1 ·
How Long Does it Take An Object To Fall 5 m From Rest?
- hudsonnkh
- · Replies 1 ·
Calculating Period of Torsion Pendulum
- rdn98
- · Replies 2 ·
Finding the tension of a string with 2 blocks attached.
- rnien
- · Replies 2 ·
Height of Hill with Potential and Kinetic Energy
- Dirst
- · Replies 6 ·
What Happens to the Fundamental Frequency When Modifying a Drinking Straw?
- sonutulsiani
- · Replies 7 ·
Calculate acceleration of the system
- briiannnaa04
- · Replies 8 ·
Hydrodynamics: Pressure of water coming out of a glass
- qnney
- · Replies 6 ·
Multiple choice questions on work and impulse.
- DavidDishere
- · Replies 4 ·
How Do You Calculate the Frequency and Period of a Pendulum's Oscillation?
- Idrees
- · Replies 2 ·
Help: Hamster wheel rotational dynamics
- Ingenue1
- · Replies 1 ·
What is the Moment of Inertia of a Flywheel?
- deltas
- · Replies 2 ·
Two masses, one changing, hung over a pulley
- Samuelb88
- · Replies 4 ·
Overcoming Frozen Pond Friction with a Thrown Textbook
- Vision5
- · Replies 2 ·
Find amplitude with SHM (Simple Harmonic Motion)
- kamiquazi
- · Replies 6 ·
Homework hellp. coefficent of friction.
- briiannnaa04
- · Replies 10 ·
Force of gravity of chain links problem
- dois
- · Replies 5 ·
Finding Net Force in Physics Homework
- dois
- · Replies 10 ·
Help Needed: Wave Frequency & Wavelength vs. Air Temp
- Dark Visitor
- · Replies 13 ·
Double slit experiment with neutrons at 0.40 m/s
- jaidon
- · Replies 9 ·
Is Hand Force Still Acting on a Thrown Ball from a Distance?
- IHateYou
- · Replies 2 ·
Finding the Unknown Mass and Force in a Suspended Chain Link System
- dois
- · Replies 3 ·
Cannon and coefficient of friction between ground
- fishfish
- · Replies 6 ·
How Far Do the Bird and Arrow Land After Collision?
- Edgar92
- · Replies 22 ·
What Is the Vertical Acceleration at the Lowest Point of a Swinging Pendulum?
- mattmannmf
- · Replies 6 ·
Simple Harmonic Motion, Velocity at a certain time
- indietro
- · Replies 7 ·
Concept Question: Work done by a Spring
- Flamefury
- · Replies 1 ·
Calculating Maximum Net Force in Simple Harmonic Motion
- Dark Visitor
- · Replies 33 ·
Boom problem using rotational equilibrium methods
- qnney
- · Replies 9 ·
Max Speed of Piston in Simple Harmonic Motion
- Dark Visitor
- · Replies 19 ·
Angular Acceleration Homework: Find Car Wheel Speed Change
- LBenson
- · Replies 6 ·
Understanding Wave Displacement: Frequency, Wavelength, and Speed Calculation
- Dark Visitor
- · Replies 7 ·
Kinematics: How fast was he when he got off the ramp
- ramb
- · Replies 6 ·
Calculate Mass Speed at .05m Displacement: .4 kg, 80 N/m
- Dark Visitor
- · Replies 17 ·
How Do You Calculate Wheel's Moment of Inertia and Frictional Torque?
- miamirulz29
- · Replies 8 ·
Having lots of difficulty with this statics+equilibrium problem.
- EtherMD
- · Replies 3 ·
String tension with an attached whirling mass
- MZA
- · Replies 1 ·
Calculating Velocity: Force, Mass & Distance Relationship
- The Trice
- · Replies 5 ·
Rotational Motion / Torque Question
- PherricOxide
- · Replies 6 ·
Determine the rms value of the electric field of the transmitted beam
- EmoryGirl
- · Replies 4 ·
Sketch Curve: Help Solve y=0 | Stephen
- StephenP91
- · Replies 2 ·
Having trouble finding the angle of deflection of light
- kliker
- · Replies 7 ·
Calculating Power Usage for Devices
- Monocerotis
- · Replies 3 ·
How Far Does a Ring Roll Up an Inclined Plane?
- lunarskull
- · Replies 4 ·
How Far Will Your Slush Ball Travel?
- junkigal
- · Replies 1 ·
What are the differences between h and d in pressure/fluid concepts?
- indietro
- · Replies 2 ·
Diffraction Grating, calculating rulings/mm from spectrum
- Oijl
- · Replies 1 ·
Use the Impulse-Momentum Theorem
- Raimuna
- · Replies 3 ·
Calculating Multiple Images in a Plane Mirror
- vu95112
- · Replies 2 ·
How much total work is done in raising the ball?
- Kiko:)
- · Replies 15 ·
Rotational Energy Pulley Problem
- SuperCass
- · Replies 2 ·
Determine the Specific Heat Capacity
- Psywing
- · Replies 8 ·
Determine the speed of the medium in transverse and longitudinal waves.
- chown
- · Replies 1 ·
How Do You Calculate the Charge on Spheres with Unequal Charges?
- LampMan
- · Replies 4 ·
Antennas in Western Europe
- zebra1707
- · Replies 3 ·
Amplitude Squared Proportional to Intensity?
- Jimmy25
- · Replies 1 ·
Calculating Frictional Work: 200 N Force on 55 kg Cart Accelerating at 2 m/s2
- Dark Visitor
- · Replies 12 ·
A cylinder containing hydrogen gas
- agadag
- · Replies 3 ·
Conservation of energy - velocity problem
- lolzwhut?
- · Replies 16 ·
Calculate Dielectric Strength Breakdown Voltage
- theman408
- · Replies 18 ·
Magnitude of the Acceleration of an Elevator when it first begins to move
- xsorealx
- · Replies 1 ·
Factorising this damned equation
- StephenP91
- · Replies 3 ·
Kinematics of Rotational Motion
- miamirulz29
- · Replies 5 ·
Find the speed at the bottom of it's swing
- Dark Visitor
- · Replies 16 ·